docs: release procedure

These 2 tags could contain local file paths, we need to
`convertFileSrc()` them as well.

.env

@@ -1,5 +1,3 @@
 COCO_SERVER_URL=http://localhost:9000 #https://coco.infini.cloud  #http://localhost:9000
 
-COCO_WEBSOCKET_URL=ws://localhost:9000/ws #wss://coco.infini.cloud/ws #ws://localhost:9000/ws
-
 #TAURI_DEV_HOST=0.0.0.0

.github/workflows/enforce-no-dep-pizza-engine.yml

@@ -0,0 +1,18 @@
+name: Enforce no dependency pizza-engine
+
+on:
+  pull_request:
+
+jobs:
+  main:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: 
+        working-directory: ./src-tauri
+        run: |
+          # if cargo remove pizza-engine succeeds, then it is in our dependency list, fail the CI pipeline.
+          if cargo remove pizza-engine; then exit 1; fi

.github/workflows/frontend-ci.yml

@@ -0,0 +1,34 @@
+name: Frontend Code Check
+
+on:
+  pull_request:
+    # Only run it when Frontend code changes
+    paths:
+      - 'src/**'
+
+jobs:
+  check:
+    strategy:
+      matrix:
+        platform: [ubuntu-latest, windows-latest, macos-latest]
+    
+    runs-on: ${{ matrix.platform }}
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+
+    - name: Setup Node.js
+      uses: actions/setup-node@v4
+      with:
+        node-version: '20'
+
+    # No need to pass the version arg as it is specified by "packageManager" in package.json
+    - name: Install pnpm
+      uses: pnpm/action-setup@v4
+
+    - name: Install dependencies
+      run: pnpm install --frozen-lockfile
+
+    - name: Build frontend
+      run: pnpm build

.github/workflows/release.yml

@@ -9,10 +9,16 @@ on:
 jobs:
   create-release:
     runs-on: ubuntu-latest
+
+    outputs:
+      APP_VERSION: ${{ steps.get-version.outputs.APP_VERSION }}
+      RELEASE_BODY: ${{ steps.get-changelog.outputs.RELEASE_BODY }}
+
     steps:
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
+
       - name: Set output
         id: vars
         run: echo "tag=${GITHUB_REF#refs/*/}" >> $GITHUB_OUTPUT
@@ -22,11 +28,28 @@ jobs:
         with:
           node-version: 20
 
+      - name: Get build version
+        shell: bash
+        id: get-version
+        run: |
+          PACKAGE_VERSION=$(jq -r '.version' package.json)
+          CARGO_VERSION=$(grep -m 1 '^version =' src-tauri/Cargo.toml | sed -E 's/.*"([^"]+)".*/\1/')
+          if [ "$PACKAGE_VERSION" != "$CARGO_VERSION" ]; then
+            echo "::error::Version mismatch!"
+          else
+            echo "Version match: $PACKAGE_VERSION"
+          fi
+          echo "APP_VERSION=$PACKAGE_VERSION" >> $GITHUB_OUTPUT
+
       - name: Generate changelog
-        id: create_release
-        run: npx changelogithub --draft --name ${{ steps.vars.outputs.tag }}
+        id: get-changelog
+        run: |
+          CHANGELOG_BODY=$(npx changelogithub --draft --name ${{ steps.vars.outputs.tag }})
+          echo "RELEASE_BODY<<EOF" >> $GITHUB_OUTPUT
+          echo "$CHANGELOG_BODY" >> $GITHUB_OUTPUT
+          echo "EOF" >> $GITHUB_OUTPUT
         env:
-          GITHUB_TOKEN: ${{ secrets.RELEASE_TOKEN }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
   build-app:
     needs: create-release
@@ -50,11 +73,25 @@ jobs:
 
           - platform: "ubuntu-22.04"
             target: "x86_64-unknown-linux-gnu"
+          - platform: "ubuntu-22.04-arm"
+            target: "aarch64-unknown-linux-gnu"
+    env:
+      APP_VERSION: ${{ needs.create-release.outputs.APP_VERSION }}
 
     runs-on: ${{ matrix.platform }}
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
+
+      - name: Checkout dependency repository
+        uses: actions/checkout@v4
+        with:
+          repository: 'infinilabs/pizza'
+          ssh-key: ${{ secrets.SSH_PRIVATE_KEY }}
+          submodules: recursive
+          ref: main
+          path: pizza
+
       - name: Setup node
         uses: actions/setup-node@v4
         with:
@@ -63,17 +100,41 @@ jobs:
         with:
           version: latest
 
-      - name: Install rust target
-        run: rustup target add ${{ matrix.target }}
-
       - name: Install dependencies (ubuntu only)
-        if: matrix.platform == 'ubuntu-22.04'
+        if: startsWith(matrix.platform, 'ubuntu-22.04')
         run: |
           sudo apt-get update
-          sudo apt-get install -y libwebkit2gtk-4.1-dev libappindicator3-dev librsvg2-dev patchelf
+          sudo apt-get install -y libwebkit2gtk-4.1-dev libappindicator3-dev librsvg2-dev patchelf xdg-utils libtracker-sparql-3.0-dev
 
-      - name: Install Rust stable
-        run: rustup toolchain install stable
+
+      # On Windows, we need to generate bindings for 'searchapi.h' using bindgen.
+      # And bindgen relies on 'libclang'
+      # https://rust-lang.github.io/rust-bindgen/requirements.html#windows
+      - name: Install dependencies (Windows only)
+        if: startsWith(matrix.platform, 'windows-latest')
+        shell: bash
+        run: winget install LLVM.LLVM --silent --accept-package-agreements --accept-source-agreements
+
+
+      - name: Add Rust build target
+        working-directory: src-tauri
+        shell: bash
+        run: |
+          rustup target add ${{ matrix.target }} || true
+
+      - name: Add pizza engine as a dependency
+        working-directory: src-tauri
+        shell: bash
+        run: |
+          BUILD_ARGS="--target ${{ matrix.target }}"
+          if [[ "${{matrix.target }}" != "i686-pc-windows-msvc" ]]; then
+            echo "Adding pizza engine as a dependency for ${{matrix.platform }}-${{matrix.target }}"
+            ( cargo add --path ../pizza/lib/engine --features query_string_parser,persistence )
+            BUILD_ARGS+=" --features use_pizza_engine"
+          else
+            echo "Skipping pizza engine dependency for ${{matrix.platform }}-${{matrix.target }}"
+          fi
+          echo "BUILD_ARGS=${BUILD_ARGS}" >> $GITHUB_ENV
 
       - name: Rust cache
         uses: swatinem/rust-cache@v2
@@ -88,8 +149,8 @@ jobs:
 
       - name: Install app dependencies and build web
         run: pnpm install --frozen-lockfile
-
-      - name: Build the app
+      
+      - name: Build the coco at ${{ matrix.platform}} for ${{ matrix.target }} @ ${{ env.APP_VERSION }}
         uses: tauri-apps/tauri-action@v0
         env:
           CI: false
@@ -105,8 +166,8 @@ jobs:
           APPLE_TEAM_ID: ${{ secrets.APPLE_TEAM_ID }}
         with:
           tagName: ${{ github.ref_name }}
-          releaseName: Coco ${{ needs.create-release.outputs.APP_VERSION }}
-          releaseBody: ""
+          releaseName: Coco ${{ env.APP_VERSION }}
+          releaseBody: "${{ needs.create-release.outputs.RELEASE_BODY }}"
           releaseDraft: true
           prerelease: false
-          args: --target ${{ matrix.target }}
+          args: ${{ env.BUILD_ARGS }}

.github/workflows/rust_code_check.yml

@@ -0,0 +1,69 @@
+name: Rust Code Check
+
+on:
+  pull_request:
+    # Only run it when Rust code changes
+    paths:
+      - 'src-tauri/**'
+
+jobs:
+  check:
+    strategy:
+      matrix:
+        platform: [ubuntu-latest, windows-latest, macos-latest]
+    
+    runs-on: ${{ matrix.platform }}
+    
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Checkout dependency (pizza-engine) repository
+      uses: actions/checkout@v4
+      with:
+        repository: 'infinilabs/pizza'
+        ssh-key: ${{ secrets.SSH_PRIVATE_KEY }}
+        submodules: recursive
+        ref: main
+        path: pizza
+
+    - name: Install dependencies (ubuntu only)
+      if: startsWith(matrix.platform, 'ubuntu-latest')
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y libwebkit2gtk-4.1-dev libappindicator3-dev librsvg2-dev patchelf xdg-utils libtracker-sparql-3.0-dev
+
+    # On Windows, we need to generate bindings for 'searchapi.h' using bindgen.
+    # And bindgen relies on 'libclang'
+    # https://rust-lang.github.io/rust-bindgen/requirements.html#windows
+    - name: Install dependencies (Windows only)
+      if: startsWith(matrix.platform, 'windows-latest')
+      shell: bash
+      run: winget install LLVM.LLVM --silent --accept-package-agreements --accept-source-agreements
+
+    - name: Add pizza engine as a dependency
+      working-directory: src-tauri
+      shell: bash
+      run: cargo add --path ../pizza/lib/engine --features query_string_parser,persistence
+
+    - name: Format check
+      working-directory: src-tauri
+      shell: bash
+      run: |
+        rustup component add rustfmt
+        cargo fmt --all --check
+
+    - name: Check compilation (Without Pizza engine enabled)
+      working-directory: ./src-tauri
+      run: cargo check 
+
+    - name: Check compilation (With Pizza engine enabled)
+      working-directory: ./src-tauri
+      run: cargo check --features use_pizza_engine
+    
+    - name: Run tests (Without Pizza engine)
+      working-directory: ./src-tauri
+      run: cargo test
+
+    - name: Run tests (With Pizza engine)
+      working-directory: ./src-tauri
+      run: cargo test --features use_pizza_engine

.gitignore

@@ -25,3 +25,4 @@ src/components/web
 *.njsproj
 *.sln
 *.sw?
+.env

.vscode/settings.json

@@ -8,11 +8,14 @@
     "clsx",
     "codegen",
     "dataurl",
+    "deeplink",
+    "deepthink",
     "dtolnay",
     "dyld",
     "elif",
     "errmsg",
     "fullscreen",
+    "fulltext",
     "headlessui",
     "Icdbb",
     "icns",
@@ -29,6 +32,8 @@
     "localstorage",
     "lucide",
     "maximizable",
+    "mdast",
+    "meval",
     "Minimizable",
     "msvc",
     "nord",
@@ -38,9 +43,11 @@
     "overscan",
     "partialize",
     "patchelf",
+    "Quicklink",
     "Raycast",
     "rehype",
     "reqwest",
+    "rerank",
     "rgba",
     "rustup",
     "screenshotable",
@@ -55,6 +62,7 @@
     "traptitech",
     "unlisten",
     "unlistener",
+    "unlisteners",
     "unminimize",
     "uuidv",
     "VITE",
@@ -75,5 +83,6 @@
   "i18n-ally.keystyle": "nested",
   "editor.tabSize": 2,
   "editor.insertSpaces": true,
-  "editor.detectIndentation": false
+  "editor.detectIndentation": false,
+  "i18n-ally.displayLanguage": "zh"
 }

Makefile

@@ -76,3 +76,10 @@ clean-rebuild:
 	@echo "Cleaning up and rebuilding..."
 	rm -rf node_modules
 	$(MAKE) dev-build
+
+add-dep-pizza-engine:
+	cd src-tauri && cargo add --git ssh://git@github.com/infinilabs/pizza.git pizza-engine --features query_string_parser,persistence
+
+dev-build-with-pizza: add-dep-pizza-engine
+	@echo "Starting desktop development with Pizza Engine pulled in..."
+	RUST_BACKTRACE=1 pnpm tauri dev --features use_pizza_engine

README.md

@@ -64,9 +64,9 @@ At Coco AI, we aim to streamline workplace collaboration by centralizing access
 
 ### Prerequisites
 
-- Node.js >= 18.12
-- Rust (latest stable)
-- pnpm (package manager)
+- [Node.js >= 18.12](https://nodejs.org/en/download/)
+- [Rust (latest stable)](https://www.rust-lang.org/tools/install)
+- [pnpm (package manager)](https://pnpm.io/installation)
 
 ### Development Setup
 
@@ -91,8 +91,16 @@ pnpm tauri build
 
 - [Coco App Documentation](https://docs.infinilabs.com/coco-app/main/)
 - [Coco Server Documentation](https://docs.infinilabs.com/coco-server/main/)
+- [DeepWiki Coco App](https://deepwiki.com/infinilabs/coco-app)
+- [DeepWiki Coco Server](https://deepwiki.com/infinilabs/coco-server)
 - [Tauri Documentation](https://tauri.app/)
 
+## Contributors
+
+<a href="https://github.com/infinilabs/coco-app/graphs/contributors">
+  <img src="https://contrib.rocks/image?repo=infinilabs/coco-app" />
+</a>
+
 ## 📄 License
 
 Coco AI is an open-source project licensed under the [MIT License](LICENSE). You can freely use, modify, and

RELEASE_PROCEDURE.md

@@ -0,0 +1,56 @@
+1. Send a PR that updates the release notes "docs/content.en/docs/release-notes/_index.md", and 
+   merge it into `main`.
+
+2. Run release command (by @medcl) 
+
+   Make sure you are on the latest main branch, then run `pnpm release`:
+
+   > NOTE: A tag is needed to trigger the [release CI][release_ci].
+
+   ```sh
+   ➜ coco-app git:(main) ✗ pnpm release
+   🚀 Let's release coco (currently at a.b.c)
+
+   Changelog:
+   * xxx
+   * xxx
+
+   ✔ Select increment (next version): 
+
+   Changeset:
+    M package.json
+    M src-tauri/Cargo.lock
+    M src-tauri/Cargo.toml
+
+   ✔ Commit (vX.Y.Z)? Yes
+   ✔ Tag (vX.Y.Z)? Yes
+   ✔ Push? Yes
+   🏁 Done
+   ```
+
+3. Build & Move Release Package
+
+   1. [Build][ci] the package for this release
+   2. @luohoufu moves the package to the stable folder.
+
+      ![release](./docs/static/img/release.png)
+
+4. Update the [roadmap](https://coco.rs/en/roadmap) (if needed)
+
+   > You should update both English and Chinese JSON files
+   >
+   > * English: https://github.com/infinilabs/coco-website/blob/main/i18n/locales/en.json
+   > * Chinese: https://github.com/infinilabs/coco-website/blob/main/i18n/locales/zh.json
+
+   1. Add a new [section][roadmap_new] for the new release
+   2. Adjust the entries under [In Progress][in_prog] and [Up Next][up_next] accordingly
+
+      * Completed items should be removed from "In Progress"
+      * Some items should be moved from "Up Next" to "In Progress"
+
+
+[release_ci]: https://github.com/infinilabs/coco-app/blob/main/.github/workflows/release.yml
+[ci]: https://github.com/infinilabs/ci/actions/workflows/coco-app.yml
+[roadmap_new]: https://github.com/infinilabs/coco-website/blob/5ae30bdfad0724bf27b4da8621b86be1dbe7bb8b/i18n/locales/en.json#L206-L218
+[in_prog]: https://github.com/infinilabs/coco-website/blob/5ae30bdfad0724bf27b4da8621b86be1dbe7bb8b/i18n/locales/en.json#L121
+[up_next]: https://github.com/infinilabs/coco-website/blob/5ae30bdfad0724bf27b4da8621b86be1dbe7bb8b/i18n/locales/en.json#L156

docs/content.en/docs/getting-started/installation/macos.md

@@ -1,21 +1,35 @@
 ---
 weight: 10
-title: "Mac OS"
+title: "macOS"
 asciinema: true
 ---
 
-# Mac OS
+# macOS
 
 ## Download Coco AI
 
-Goto [https://coco.rs/](https://coco.rs/)
+Go to [coco.rs](https://coco.rs/) and download the package of your architecture:
 
-{{% load-img "/img/download-mac-app.png" "" %}}
+{{% load-img "/img/macos/mac-download-app.png" "" %}}
+
+It should be placed in your "Downloads" folder:
+
+{{% load-img "/img/macos/mac-zip-file.png" "" %}}
 
 ## Unzip DMG file
 
-{{% load-img "/img/unzip-dmg-file.png" "" %}}
+Unzip the file:
+
+{{% load-img "/img/macos/mac-unzip-zip-file.png" "" %}}
+
+You will get a `dmg` file:
+
+{{% load-img "/img/macos/mac-dmg.png" "" %}}
 
 ## Drag to Application Folder
 
-{{% load-img "/img/drag-to-application-folder.png" "" %}}
+Double click the `dmg` file, a window will pop up. Then drag the "Coco-AI" app to 
+your "Applications" folder:
+
+{{% load-img "/img/macos/drag-to-app-folder.png" "" %}}
+

docs/content.en/docs/getting-started/installation/ubuntu.md

@@ -0,0 +1,46 @@
+---
+weight: 10
+title: "Ubuntu"
+asciinema: true
+---
+
+# Ubuntu
+
+> NOTE: Coco app only works fully under [X11][x11_protocol].
+>
+> Don't know if you running X11 or not? take a look at this [question][if_x11]!
+
+[x11_protocol]: https://en.wikipedia.org/wiki/X_Window_System 
+[if_x11]: https://unix.stackexchange.com/q/202891/498440
+
+## Install dependencies
+
+```sh
+$ sudo apt-get update
+$ sudo apt-get install -y libwebkit2gtk-4.1-dev libappindicator3-dev librsvg2-dev patchelf xdg-utils libtracker-sparql-3.0-dev
+```
+
+## Go to the download page
+
+Download page: [link](https://coco.rs/#install)
+
+## Download the package
+
+Download the package of your architecture, it should be put in your `Downloads` directory 
+and look like this:
+
+```sh
+$ cd ~/Downloads
+$ ls 
+Coco-AI-x.y.z-bbbb-deb-linux-amd64.zip 
+# or Coco-AI-x.y.z-bbbb-deb-linux-arm64.zip depending on your architecture
+```
+
+## Install it
+   
+Unzip and install it
+
+```
+$ unzip Coco-AI-x.y.z-bbbb-deb-linux-amd64.zip 
+$ sudo dpkg -i Coco-AI-x.y.z-bbbb-deb-linux-amd64.deb 
+```

docs/content.en/docs/release-notes/_index.md

@@ -5,9 +5,68 @@ title: "Release Notes"
 
 # Release Notes
 
-Information about release notes of Coco Server is provided here.
+Information about release notes of Coco App is provided here.
 
 ## Latest (In development)
+### ❌ Breaking changes
+### 🚀 Features
+### 🐛 Bug fix
+### ✈️ Improvements
+
+
+## 0.8.0 (2025-09-28)
+
+### ❌ Breaking changes
+
+- chore: update request accesstoken api #866
+
+### 🚀 Features
+
+- feat: enhance ui for skipped version #834
+- feat: support installing local extensions #749
+- feat: support sending files in chat messages #764
+- feat: sub extension can set 'platforms' now #847
+- feat: add extension uninstall option in settings #855
+- feat: impl extension settings 'hide_before_open' #862
+- feat: index both en/zh_CN app names and show app name in chosen language #875
+- feat: support context menu in debug mode #882
+- feat: file search for Linux/GNOME #884
+- feat: file search for Linux/KDE #886
+- feat: extension Window Management for macOS #892
+- feat: new extension type View #894
+- feat: support opening file in its containing folder #900
+
+### 🐛 Bug fix
+
+- fix: fix issue with update check failure #833
+- fix: web component login state #857
+- fix: shortcut key not opening extension store #877
+- fix: set up hotkey on main thread or Windows will complain #879
+- fix: resolve deeplink login issue #881
+- fix: use kill_on_drop() to avoid zombie proc in error case #887
+- fix: settings window rendering/loading issue 889
+- fix: ensure search paths are indexed #896
+- fix: bump applications-rs to fix empty app name issue #898
+
+### ✈️ Improvements
+
+- refactor: calling service related interfaces #831
+- refactor: split query_coco_fusion() #836
+- chore: web component loading font icon #838
+- chore: delete unused code files and dependencies #841
+- chore: ignore tauri::AppHandle's generic argument R #845
+- refactor: check Extension/plugin.json from all sources #846
+- refactor: pinning window won't set CanJoinAllSpaces on macOS #854
+- build: web component build error #858
+- refactor: coordinate third-party extension operations using lock #867
+- refactor: index iOS apps and macOS apps that store icon in Assets.car #872
+- refactor: accept both '-' and '\_' as locale str separator #876
+- refactor: relax the file search conditions on macOS #883
+- refactor: ensure Coco won't take focus #891
+- chore: skip login check for web widget #895
+- chore: convertFileSrc() "link[href]" and "img[src]" #901
+
+## 0.7.1 (2025-07-27)
 
 ### ❌ Breaking changes
 
@@ -15,8 +74,207 @@ Information about release notes of Coco Server is provided here.
 
 ### 🐛 Bug fix
 
+- fix: correct enter key behavior #828
+
 ### ✈️ Improvements
 
+- chore: web component add notification component #825
+- refactor: collection behavior defaults to `MoveToActiveSpace`, and only use `CanJoinAllSpaces` when window is pinned #829
+
+## 0.7.0 (2025-07-25)
+
+### ❌ Breaking changes
+
+### 🚀 Features
+
+- feat: file search using spotlight #705
+- feat: voice input support in both search and chat modes #732
+- feat: text to speech now powered by LLM #750
+- feat: file search for Windows #762
+
+### 🐛 Bug fix
+
+- fix(file search): apply filters before from/size parameters #741
+- fix(file search): searching by name&content does not search file name #743
+- fix: prevent window from hiding when moved on Windows #748
+- fix: unregister ext hotkey when it gets deleted #770
+- fix: indexing apps does not respect search scope config #773
+- fix: restore missing category titles on subpages #772
+- fix: correct incorrect assistant display when quick ai access #779
+- fix: resolved minor issues with voice playback #780
+- fix: fixed incorrect taskbar icon display on linux #783
+- fix: fix data inconsistency issue on secondary pages #784
+- fix: incorrect status when installing extension #789
+- fix: increase read_timeout for HTTP streaming stability #798
+- fix: enter key problem #794
+- fix: fix selection issue after renaming #800
+- fix: fix shortcut issue in windows context menu #804
+- fix: panic caused by "state() called before manage()" #806
+- fix: fix multiline input issue #808
+- fix: fix ctrl+k not working #815
+- fix: fix update window config sync #818
+- fix: fix enter key on subpages #819
+- fix: panic on Ubuntu (GNOME) when opening apps #821
+
+### ✈️ Improvements
+
+- refactor: prioritize stat(2) when checking if a file is dir #737
+- refactor: change File Search ext type to extension #738
+- refactor: create chat & send chat api #739
+- chore: icon support for more file types #740
+- chore: replace meval-rs with our fork to clear dep warning #745
+- refactor: adjusted assistant, datasource, mcp_server interface parameters #746
+- refactor: adjust extension code hierarchy #747
+- chore: bump dep applications-rs #751
+- chore: rename QuickLink/quick_link to Quicklink/quicklink #752
+- chore: assistant params & styles #753
+- chore: make optional fields optional #758
+- chore: search-chat components add formatUrl & think data & icons url #765
+- chore: Coco app http request headers #744
+- refactor: do status code check before deserializing response #767
+- style: splash adapts to the width of mobile phones #768
+- chore: search-chat add language and formatUrl parameters #775
+- chore: not request the interface if not logged in #795
+- refactor: clean up unsupported characters from query string in Win Search #802
+- chore: display backtrace in panic log #805
+
+## 0.6.0 (2025-06-29)
+
+### ❌ Breaking changes
+
+### 🚀 Features
+
+- feat: support `Tab` and `Enter` for delete dialog buttons #700
+- feat: add check for updates #701
+- feat: impl extension store #699
+- feat: support back navigation via delete key #717
+
+### 🐛 Bug fix
+
+- fix: quick ai state synchronous #693
+- fix: toggle extension should register/unregister hotkey #691
+- fix: take coco server back on refresh #696
+- fix: some input fields couldn’t accept spaces #709
+- fix: context menu search not working #713
+- fix: open extension store display #724
+
+### ✈️ Improvements
+
+- refactor: use author/ext_id as extension unique identifier #643
+- refactor: refactoring search api #679
+- chore: continue to chat page display #690
+- chore: improve server list selection with enter key #692
+- chore: add message for latest version check #703
+- chore: log command execution results #718
+- chore: adjust styles and add button reindex #719
+
+## 0.5.0 (2025-06-13)
+
+### ❌ Breaking changes
+
+### 🚀 Features
+
+- feat: check or enter to close the list of assistants #469
+- feat: add dimness settings for pinned window #470
+- feat: supports Shift + Enter input box line feeds #472
+- feat: support for snapshot version updates #480
+- feat: history list add put away button #482
+- feat: the chat input box supports multi-line input #490
+- feat: add `~/Applications` to the search path #493
+- feat: the chat content has added a button to return to the bottom #495
+- feat: the search input box supports multi-line input #501
+- feat: websocket support self-signed TLS #504
+- feat: add option to allow self-signed certificates #509
+- feat: add AI summary component #518
+- feat: dynamic log level via env var COCO_LOG #535
+- feat: add quick AI access to search mode #556
+- feat: rerank search results #561
+- feat: ai overview support is enabled with shortcut #597
+- feat: add key monitoring during reset #615
+- feat: calculator extension add description #623
+- feat: support right-click actions after text selection #624
+- feat: add ai overview minimum number of search results configuration #625
+- feat: add internationalized translations of AI-related extensions #632
+- feat: context menu support for secondary pages #680
+
+### 🐛 Bug fix
+
+- fix: solve the problem of modifying the assistant in the chat #476
+- fix: several issues around search #502
+- fix: fixed the newly created session has no title when it is deleted #511
+- fix: loading chat history for potential empty attachments
+- fix: datasource & MCP list synchronization update #521
+- fix: app icon & category icon #529
+- fix: show only enabled datasource & MCP list
+- fix: server image loading failure #534
+- fix: panic when fetching app metadata on Windows #538
+- fix: service switching error #539
+- fix: switch server assistant and session unchanged #540
+- fix: history list height #550
+- fix: secondary page cannot be searched #551
+- fix: the scroll button is not displayed by default #552
+- fix: suggestion list position #553
+- fix: independent chat window has no data #554
+- fix: resolved navigation error on continue chat action #558
+- fix: make extension search source respect parameter datasource #576
+- fix: fixed issue with incorrect login status #600
+- fix: new chat assistant id not found #603
+- fix: resolve regex error on older macOS versions #605
+- fix: fix chat log update and sorting issues #612
+- fix: resolved an issue where number keys were not working on the web #616
+- fix: do not panic when the datasource specified does not exist #618
+- fix: fixed modifier keys not working with continue chat #619
+- fix: invalid DSL error if input contains multiple lines #620
+- fix: fix ai overview hidden height before message #622
+- fix: tab key hides window in chat mode #641
+- fix: arrow keys still navigated search when menu opened with Cmd+K #642
+- fix: input lost when reopening dialog after search #644
+- fix: web page unmount event #645
+- fix: fix the problem of local path not opening #650
+- fix: number keys not following settings #661
+- fix: fix problem with up and down key indexing #676
+- fix: arrow inserting escape sequences #683
+
+### ✈️ Improvements
+
+- chore: adjust list error message #475
+- chore: refine wording on search failure
+- chore：search and MCP show hidden logic #494
+- chore: greetings show hidden logic #496
+- refactor: fetch app list in settings in real time #498
+- chore: UpdateApp component loading location #499
+- chore: add clear monitoring & cache calculation to optimize performance #500
+- refactor: optimizing the code #505
+- refactor: optimized the modification operation of the numeric input box #508
+- style: modify the style of the search input box #513
+- style: chat input icons show #515
+- refactor: refactoring icon component #514
+- refactor: optimizing list styles in markdown content #520
+- feat: add a component for text reading aloud #522
+- style: history component styles #528
+- style: search error styles #533
+- chore: skip register server that not logged in #536
+- refactor: service info related components #537
+- chore: chat content can be copied #539
+- refactor: refactoring search error #541
+- chore: add assistant count #542
+- chore: add global login judgment #544
+- chore: mark server offline on user logout #546
+- chore: logout update server profile #549
+- chore: assistant keyboard events and mouse events #559
+- chore: web component start page config #560
+- chore: assistant chat placeholder & refactor input box components #566
+- refactor: input box related components #568
+- chore: mark unavailable server to offline on refresh info #569
+- chore: only show available servers in chat #570
+- refactor: search result related components #571
+- chore: initialize current assistant from history #606
+- chore: add onContextMenu event #629
+- chore: more logs for the setup process #634
+- chore: copy supports http protocol #639
+- refactor: use author/ext_id as extension unique identifier #643
+- chore: add special character filtering #668
+
 ## 0.4.0 (2025-04-27)
 
 ### Breaking changes
@@ -45,6 +303,8 @@ Information about release notes of Coco Server is provided here.
 - feat: data sources support displaying customized icons #432
 - feat: add shortcut key conflict hint and reset function #442
 - feat: updated to include error message #465
+- feat: support third party extensions #572
+- feat: support ai overview #572
 
 ### Bug fix
 

package.json

@@ -1,7 +1,7 @@
 {
   "name": "coco",
   "private": true,
-  "version": "0.4.0",
+  "version": "0.8.0",
   "type": "module",
   "scripts": {
     "dev": "vite",
@@ -18,37 +18,38 @@
     "release-beta": "release-it --preRelease=beta --preReleaseBase=1"
   },
   "dependencies": {
-    "@ant-design/icons": "^6.0.0",
-    "@headlessui/react": "^2.2.0",
-    "@tauri-apps/api": "^2.4.0",
+    "@headlessui/react": "^2.2.2",
+    "@tauri-apps/api": "^2.5.0",
     "@tauri-apps/plugin-autostart": "~2.2.0",
-    "@tauri-apps/plugin-deep-link": "^2.2.0",
-    "@tauri-apps/plugin-dialog": "^2.2.0",
+    "@tauri-apps/plugin-deep-link": "^2.2.1",
+    "@tauri-apps/plugin-dialog": "^2.2.1",
     "@tauri-apps/plugin-global-shortcut": "~2.0.0",
     "@tauri-apps/plugin-http": "~2.0.2",
+    "@tauri-apps/plugin-log": "~2.4.0",
+    "@tauri-apps/plugin-opener": "^2.5.0",
     "@tauri-apps/plugin-os": "^2.2.1",
-    "@tauri-apps/plugin-process": "^2.2.0",
-    "@tauri-apps/plugin-shell": "^2.2.0",
-    "@tauri-apps/plugin-updater": "^2.6.1",
-    "@tauri-apps/plugin-websocket": "~2.3.0",
+    "@tauri-apps/plugin-process": "^2.2.1",
+    "@tauri-apps/plugin-shell": "^2.2.1",
+    "@tauri-apps/plugin-updater": "github:infinilabs/tauri-plugin-updater#v2",
     "@tauri-apps/plugin-window": "2.0.0-alpha.1",
-    "@wavesurfer/react": "^1.0.9",
+    "@wavesurfer/react": "^1.0.11",
     "ahooks": "^3.8.4",
-    "axios": "^1.8.4",
+    "axios": "^1.9.0",
     "clsx": "^2.1.1",
     "dayjs": "^1.11.13",
-    "dotenv": "^16.4.7",
+    "dotenv": "^16.5.0",
     "filesize": "^10.1.6",
     "i18next": "^23.16.8",
-    "i18next-browser-languagedetector": "^8.0.4",
+    "i18next-browser-languagedetector": "^8.1.0",
     "lodash-es": "^4.17.21",
     "lucide-react": "^0.461.0",
-    "mermaid": "^11.5.0",
+    "mdast-util-gfm-autolink-literal": "2.0.0",
+    "mermaid": "^11.6.0",
     "nanoid": "^5.1.5",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
-    "react-hotkeys-hook": "^4.6.1",
-    "react-i18next": "^15.4.1",
+    "react-hotkeys-hook": "^4.6.2",
+    "react-i18next": "^15.5.1",
     "react-markdown": "^9.1.0",
     "react-router-dom": "^6.30.0",
     "react-window": "^1.8.11",
@@ -57,26 +58,28 @@
     "remark-breaks": "^4.0.0",
     "remark-gfm": "^4.0.1",
     "remark-math": "^6.0.0",
+    "tailwind-merge": "^3.3.1",
     "tauri-plugin-fs-pro-api": "^2.4.0",
-    "tauri-plugin-macos-permissions-api": "^2.2.0",
-    "tauri-plugin-screenshots-api": "^2.1.0",
+    "tauri-plugin-macos-permissions-api": "^2.3.0",
+    "tauri-plugin-screenshots-api": "^2.2.0",
     "tauri-plugin-windows-version-api": "^2.0.0",
+    "type-fest": "^4.41.0",
     "use-debounce": "^10.0.4",
     "uuid": "^11.1.0",
-    "wavesurfer.js": "^7.9.3",
-    "zustand": "^5.0.3"
+    "wavesurfer.js": "^7.9.5",
+    "zustand": "^5.0.4"
   },
   "devDependencies": {
-    "@tauri-apps/cli": "^2.4.0",
+    "@tauri-apps/cli": "^2.5.0",
     "@types/dom-speech-recognition": "^0.0.4",
     "@types/lodash-es": "^4.17.12",
     "@types/markdown-it": "^14.1.2",
-    "@types/node": "^22.13.11",
-    "@types/react": "^18.3.19",
-    "@types/react-dom": "^18.3.5",
+    "@types/node": "^22.15.17",
+    "@types/react": "^18.3.21",
+    "@types/react-dom": "^18.3.7",
     "@types/react-katex": "^3.0.4",
     "@types/react-window": "^1.8.8",
-    "@vitejs/plugin-react": "^4.3.4",
+    "@vitejs/plugin-react": "^4.4.1",
     "autoprefixer": "^10.4.21",
     "cross-env": "^7.0.3",
     "immer": "^10.1.1",
@@ -85,8 +88,9 @@
     "sass": "^1.87.0",
     "tailwindcss": "^3.4.17",
     "tsup": "^8.4.0",
-    "tsx": "^4.19.3",
-    "typescript": "^5.8.2",
-    "vite": "^5.4.14"
-  }
+    "tsx": "^4.19.4",
+    "typescript": "^5.8.3",
+    "vite": "^5.4.19"
+  },
+  "packageManager": "pnpm@10.11.0+sha512.6540583f41cc5f628eb3d9773ecee802f4f9ef9923cc45b69890fb47991d4b092964694ec3a4f738a420c918a333062c8b925d312f42e4f0c263eb603551f977"
 }

scripts/devWeb.ts

@@ -0,0 +1 @@
+(() => {})();

src-tauri/Cargo.toml

@@ -1,9 +1,9 @@
 [package]
 name = "coco"
-version = "0.4.0"
+version = "0.8.0"
 description = "Search, connect, collaborate – all in one place."
 authors = ["INFINI Labs"]
-edition = "2021"
+edition = "2024"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 [lib]
@@ -15,39 +15,57 @@ crate-type = ["staticlib", "cdylib", "rlib"]
 
 [build-dependencies]
 tauri-build = { version = "2", features = ["default"] }
+cfg-if = "1.0.1"
 
 [features]
 default = ["desktop"]
 desktop = []
 cargo-clippy = []
+# If enabled, code that relies on pizza_engine will be activated.
+#
+# Only do this if:
+# 1. Pizza engine is listed in the `dependencies` section
+#  
+# ```toml
+# [dependencies]
+# pizza-engine = { git = "ssh://git@github.com/infinilabs/pizza.git", features = ["query_string_parser", "persistence"] }
+# ```
+#
+# 2. It is a private repo, you have access to it.
+#
+# So, for external contributors, do NOT enable this feature.
+# 
+# Previously, We listed it in the dependencies and marked it optional, but cargo 
+# would fetch all the dependencies regardless of wheterh they are optional or not, 
+# so we removed it.
+#
+# https://github.com/rust-lang/cargo/issues/4544#issuecomment-1906902755
+use_pizza_engine = []
 
 [dependencies]
 pizza-common = { git = "https://github.com/infinilabs/pizza-common", branch = "main" }
 
-tauri = { version = "2", features = ["protocol-asset", "macos-private-api", "tray-icon", "image-ico", "image-png", "unstable"] }
+tauri = { version = "2", features = ["protocol-asset", "macos-private-api", "tray-icon", "image-ico", "image-png"] }
 tauri-plugin-shell = "2"
 serde = { version = "1", features = ["derive"] }
 # Need `arbitrary_precision` feature to support storing u128
 # see: https://docs.rs/serde_json/latest/serde_json/struct.Number.html#method.from_u128
-serde_json = { version = "1", features = ["arbitrary_precision"] }
+serde_json = { version = "1", features = ["arbitrary_precision", "preserve_order"] }
 tauri-plugin-http = "2"
-tauri-plugin-websocket = "2"
 tauri-plugin-deep-link = "2.0.0"
 tauri-plugin-store = "2.2.0"
 tauri-plugin-os = "2"
 tauri-plugin-dialog = "2"
 tauri-plugin-fs = "2"
-tauri-plugin-updater = "2"
 tauri-plugin-process = "2"
 tauri-plugin-drag = "2"
 tauri-plugin-macos-permissions = "2"
 tauri-plugin-fs-pro = "2"
 tauri-plugin-screenshots = "2"
-applications = { git = "https://github.com/infinilabs/applications-rs", rev = "fb8f475993a2a774ce08d7a58f9f2ac264248a24" }
-
+applications = { git = "https://github.com/infinilabs/applications-rs", rev = "b5fac4034a40d42e72f727f1aa1cc1f19fe86653" }
 tokio-native-tls = "0.3"  # For wss connections
 tokio = { version = "1", features = ["full"] }
-tokio-tungstenite = { version = "0.20", features = ["rustls-tls-webpki-roots"] }
+tokio-tungstenite = { version = "0.20", features = ["native-tls"] }
 hyper = { version = "0.14", features = ["client"] }
 reqwest = { version = "0.12", features = ["json", "multipart"] }
 futures = "0.3.31"
@@ -62,25 +80,65 @@ hostname = "0.3"
 plist = "1.7"
 base64 = "0.13"
 walkdir = "2"
-fuzzy_prefix_search = "0.2"
 log = "0.4"
-
+strsim = "0.10"
 futures-util = "0.3.31"
-url = "2.5.2"
 http = "1.1.0"
 tungstenite = "0.24.0"
-env_logger = "0.11.5"
 tokio-util = "0.7.14"
 tauri-plugin-windows-version = "2"
-meval = "0.2"
+meval = { git = "https://github.com/infinilabs/meval-rs" }
 chinese-number = "0.7"
 num2words = "1"
+tauri-plugin-log = "2"
+chrono = "0.4.41"
+serde_plain = "1.0.2"
+derive_more = { version = "2.0.1", features = ["display"] }
+anyhow = "1.0.98"
+function_name = "0.3.0"
+regex = "1.11.1"
+borrowme = "0.0.15"
+tauri-plugin-opener = "2"
+async-recursion = "1.1.1"
+zip = "4.0.0"
+url = "2.5.2"
+camino = "1.1.10"
+tokio-stream = { version = "0.1.17", features = ["io-util"] }
+sysinfo = "0.35.2"
+indexmap = { version = "2.10.0", features = ["serde"] }
+strum = { version = "0.27.2", features = ["derive"] }
+sys-locale = "0.3.2"
+tauri-plugin-prevent-default = "1"
+oneshot = "0.1.11"
+bitflags = "2.9.3"
+cfg-if = "1.0.1"
+dunce = "1.0.5"
+urlencoding = "2.1.3"
+scraper = "0.17"
+toml = "0.8"
+path-clean = "1.0.1"
+
+[dev-dependencies]
+tempfile = "3.23.0"
 
 [target."cfg(target_os = \"macos\")".dependencies]
 tauri-nspanel = { git = "https://github.com/ahkohd/tauri-nspanel", branch = "v2" }
+objc2-app-kit = { version = "0.3.1", features = ["NSWindow"] }
+objc2 = "0.6.2"
+objc2-core-foundation =  {version = "0.3.1", features = ["CFString", "CFCGTypes", "CFArray"] }
+objc2-application-services = { version = "0.3.1", features = ["HIServices"] }
+objc2-core-graphics = { version = "=0.3.1", features = ["CGEvent"] }
+
+[target."cfg(target_os = \"linux\")".dependencies]
+gio = "0.21.2"
+glib = "0.21.2"
+tracker-rs = "0.7"
+which = "8.0.0"
+configparser = "3.1.0"
 
 [target."cfg(any(target_os = \"macos\", windows, target_os = \"linux\"))".dependencies]
 tauri-plugin-single-instance = { version = "2.0.0", features = ["deep-link"] }
+serde = { version = "1.0.219", features = ["derive"], optional = true }
 
 
 [profile.dev]
@@ -96,4 +154,14 @@ strip = true # Ensures debug symbols are removed.
 [target.'cfg(not(any(target_os = "android", target_os = "ios")))'.dependencies]
 tauri-plugin-autostart = "^2.2"
 tauri-plugin-global-shortcut = "2"
-tauri-plugin-updater = "2"
+tauri-plugin-updater = { git = "https://github.com/infinilabs/plugins-workspace", branch = "v2" }
+# This should be compatible with the semver used by `tauri-plugin-updater`
+semver = { version = "1", features = ["serde"] }
+
+[target."cfg(target_os = \"windows\")".dependencies]
+enigo="0.3"
+windows = { version = "0.61", features = ["Win32_Foundation", "Win32_System_Com", "Win32_System_Ole", "Win32_System_Search", "Win32_UI_Shell_PropertiesSystem", "Win32_Data"] }
+windows-sys = { version = "0.61", features = ["Win32", "Win32_System", "Win32_System_Com"] }
+
+[target."cfg(target_os = \"windows\")".build-dependencies]
+bindgen = "0.72.1"

src-tauri/build.rs

@@ -1,3 +1,42 @@
 fn main() {
-    tauri_build::build()
+    tauri_build::build();
+
+    // If env var `GITHUB_ACTIONS` exists, we are running in CI, set up the `ci`
+    // attribute
+    if std::env::var("GITHUB_ACTIONS").is_ok() {
+        println!("cargo:rustc-cfg=ci");
+    }
+
+    // Notify `rustc` of this `cfg` attribute to suppress unknown attribute warnings.
+    //
+    // unexpected condition name: `ci`
+    println!("cargo::rustc-check-cfg=cfg(ci)");
+
+    // Bindgen searchapi.h on Windows as the windows create does not provide
+    // bindings for it
+    cfg_if::cfg_if! {
+        if #[cfg(target_os = "windows")] {
+            use std::env;
+            use std::path::PathBuf;
+
+            let wrapper_header = r#"#include <windows.h>
+    #include <searchapi.h>"#;
+
+            let searchapi_bindings = bindgen::Builder::default()
+                .header_contents("wrapper.h", wrapper_header)
+                .generate()
+                .expect("failed to generate bindings for <searchapi.h>");
+
+            let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
+            searchapi_bindings
+                .write_to_file(out_path.join("searchapi_bindings.rs"))
+                .expect("couldn't write bindings to <OUT_DIR/searchapi_bindings.rs>")
+
+            // Looks like there is no need to link the library that contains the
+            // implementation of functions declared in 'searchapi.h' manually as
+            // the FFI bindings work (without doing that).
+            //
+            // This is wield, I do not expect the linker will link it automatically.
+        }
+    }
 }

src-tauri/capabilities/default.json

@@ -2,7 +2,7 @@
   "$schema": "../gen/schemas/desktop-schema.json",
   "identifier": "default",
   "description": "Capability for the main window",
-  "windows": ["main", "chat", "settings"],
+  "windows": ["main", "chat", "settings", "check"],
   "permissions": [
     "core:default",
     "core:event:allow-emit",
@@ -37,9 +37,6 @@
     "http:allow-fetch-cancel",
     "http:allow-fetch-read-body",
     "http:allow-fetch-send",
-    "websocket:default",
-    "websocket:allow-connect",
-    "websocket:allow-send",
     "autostart:allow-enable",
     "autostart:allow-disable",
     "autostart:allow-is-enabled",
@@ -70,6 +67,9 @@
     "core:window:allow-set-theme",
     "process:default",
     "updater:default",
-    "windows-version:default"
+    "windows-version:default",
+    "log:default",
+    "opener:default",
+    "core:window:allow-unminimize"
   ]
 }

src-tauri/rust-toolchain.toml

@@ -0,0 +1,2 @@
+[toolchain]
+channel = "nightly-2025-06-26"

src-tauri/src/assistant/mod.rs

@@ -1,30 +1,34 @@
-use crate::common;
 use crate::common::assistant::ChatRequestMessage;
-use crate::common::http::GetResponse;
+use crate::common::http::convert_query_params_to_strings;
+use crate::common::register::SearchSourceRegistry;
 use crate::server::http_client::HttpClient;
+use crate::{common, server::servers::COCO_SERVERS};
+use futures::StreamExt;
+use futures::stream::FuturesUnordered;
+use futures_util::TryStreamExt;
+use http::Method;
 use serde_json::Value;
 use std::collections::HashMap;
-use tauri::{AppHandle, Runtime};
+use tauri::{AppHandle, Emitter, Manager};
+use tokio::io::AsyncBufReadExt;
 
 #[tauri::command]
-pub async fn chat_history<R: Runtime>(
-    _app_handle: AppHandle<R>,
+pub async fn chat_history(
+    _app_handle: AppHandle,
     server_id: String,
     from: u32,
     size: u32,
     query: Option<String>,
 ) -> Result<String, String> {
-    let mut query_params: HashMap<String, Value> = HashMap::new();
-    if from > 0 {
-        query_params.insert("from".to_string(), from.into());
-    }
-    if size > 0 {
-        query_params.insert("size".to_string(), size.into());
-    }
+    let mut query_params = Vec::new();
+
+    // Add from/size as number values
+    query_params.push(format!("from={}", from));
+    query_params.push(format!("size={}", size));
 
     if let Some(query) = query {
         if !query.is_empty() {
-            query_params.insert("query".to_string(), query.into());
+            query_params.push(format!("query={}", query.to_string()));
         }
     }
 
@@ -39,20 +43,18 @@ pub async fn chat_history<R: Runtime>(
 }
 
 #[tauri::command]
-pub async fn session_chat_history<R: Runtime>(
-    _app_handle: AppHandle<R>,
+pub async fn session_chat_history(
+    _app_handle: AppHandle,
     server_id: String,
     session_id: String,
     from: u32,
     size: u32,
 ) -> Result<String, String> {
-    let mut query_params: HashMap<String, Value> = HashMap::new();
-    if from > 0 {
-        query_params.insert("from".to_string(), from.into());
-    }
-    if size > 0 {
-        query_params.insert("size".to_string(), size.into());
-    }
+    let mut query_params = Vec::new();
+
+    // Add from/size as number values
+    query_params.push(format!("from={}", from));
+    query_params.push(format!("size={}", size));
 
     let path = format!("/chat/{}/_history", session_id);
 
@@ -64,15 +66,14 @@ pub async fn session_chat_history<R: Runtime>(
 }
 
 #[tauri::command]
-pub async fn open_session_chat<R: Runtime>(
-    _app_handle: AppHandle<R>,
+pub async fn open_session_chat(
+    _app_handle: AppHandle,
     server_id: String,
     session_id: String,
 ) -> Result<String, String> {
-    let query_params = HashMap::new();
     let path = format!("/chat/{}/_open", session_id);
 
-    let response = HttpClient::post(&server_id, path.as_str(), Some(query_params), None)
+    let response = HttpClient::post(&server_id, path.as_str(), None, None)
         .await
         .map_err(|e| format!("Error open session: {}", e))?;
 
@@ -80,30 +81,30 @@ pub async fn open_session_chat<R: Runtime>(
 }
 
 #[tauri::command]
-pub async fn close_session_chat<R: Runtime>(
-    _app_handle: AppHandle<R>,
+pub async fn close_session_chat(
+    _app_handle: AppHandle,
     server_id: String,
     session_id: String,
 ) -> Result<String, String> {
-    let query_params = HashMap::new();
     let path = format!("/chat/{}/_close", session_id);
 
-    let response = HttpClient::post(&server_id, path.as_str(), Some(query_params), None)
+    let response = HttpClient::post(&server_id, path.as_str(), None, None)
         .await
         .map_err(|e| format!("Error close session: {}", e))?;
 
     common::http::get_response_body_text(response).await
 }
 #[tauri::command]
-pub async fn cancel_session_chat<R: Runtime>(
-    _app_handle: AppHandle<R>,
+pub async fn cancel_session_chat(
+    _app_handle: AppHandle,
     server_id: String,
     session_id: String,
+    query_params: Option<HashMap<String, Value>>,
 ) -> Result<String, String> {
-    let query_params = HashMap::new();
     let path = format!("/chat/{}/_cancel", session_id);
+    let query_params = convert_query_params_to_strings(query_params);
 
-    let response = HttpClient::post(&server_id, path.as_str(), Some(query_params), None)
+    let response = HttpClient::post(&server_id, path.as_str(), query_params, None)
         .await
         .map_err(|e| format!("Error cancel session: {}", e))?;
 
@@ -111,75 +112,161 @@ pub async fn cancel_session_chat<R: Runtime>(
 }
 
 #[tauri::command]
-pub async fn new_chat<R: Runtime>(
-    _app_handle: AppHandle<R>,
+pub async fn chat_create(
+    app_handle: AppHandle,
     server_id: String,
-    websocket_id: String,
-    message: String,
+    message: Option<String>,
+    attachments: Option<Vec<String>>,
     query_params: Option<HashMap<String, Value>>,
-) -> Result<GetResponse, String> {
-    let body = if !message.is_empty() {
-        let message = ChatRequestMessage {
-            message: Some(message),
+    client_id: String,
+) -> Result<(), String> {
+    println!("chat_create message: {:?}", message);
+    println!("chat_create attachments: {:?}", attachments);
+
+    let message_empty = message.as_ref().map_or(true, |m| m.is_empty());
+    let attachments_empty = attachments.as_ref().map_or(true, |a| a.is_empty());
+
+    if message_empty && attachments_empty {
+        return Err("Message and attachments are empty".to_string());
+    }
+
+    let body = {
+        let request_message: ChatRequestMessage = ChatRequestMessage {
+            message,
+            attachments,
         };
+
+        println!("chat_create body: {:?}", request_message);
+
         Some(
-            serde_json::to_string(&message)
+            serde_json::to_string(&request_message)
                 .map_err(|e| format!("Failed to serialize message: {}", e))?
                 .into(),
         )
-    } else {
-        None
     };
 
-    let mut headers = HashMap::new();
-    headers.insert("WEBSOCKET-SESSION-ID".to_string(), websocket_id.into());
+    let response = HttpClient::advanced_post(
+        &server_id,
+        "/chat/_create",
+        None,
+        convert_query_params_to_strings(query_params),
+        body,
+    )
+    .await
+    .map_err(|e| format!("Error sending message: {}", e))?;
 
-    let response =
-        HttpClient::advanced_post(&server_id, "/chat/_new", Some(headers), query_params, body)
-            .await
-            .map_err(|e| format!("Error sending message: {}", e))?;
-
-    let body_text = common::http::get_response_body_text(response).await?;
-
-    let chat_response: GetResponse =
-        serde_json::from_str(&body_text).map_err(|e| format!("Failed to parse response JSON: {}", e))?;
-
-    if chat_response.result != "created" {
-        return Err(format!("Unexpected result: {}", chat_response.result));
+    if response.status() == 429 {
+        log::warn!("Rate limit exceeded for chat create");
+        return Err("Rate limited".to_string());
     }
 
-    Ok(chat_response)
+    if !response.status().is_success() {
+        return Err(format!("Request failed with status: {}", response.status()));
+    }
+
+    let stream = response.bytes_stream();
+    let reader = tokio_util::io::StreamReader::new(
+        stream.map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, e)),
+    );
+    let mut lines = tokio::io::BufReader::new(reader).lines();
+
+    log::info!("client_id_create: {}", &client_id);
+
+    while let Ok(Some(line)) = lines.next_line().await {
+        log::info!("Received chat stream line: {}", &line);
+
+        if let Err(err) = app_handle.emit(&client_id, line) {
+            log::error!("Emit failed: {:?}", err);
+
+            let _ = app_handle.emit("chat-create-error", format!("Emit failed: {:?}", err));
+        }
+    }
+
+    Ok(())
 }
 
 #[tauri::command]
-pub async fn send_message<R: Runtime>(
-    _app_handle: AppHandle<R>,
+pub async fn chat_chat(
+    app_handle: AppHandle,
     server_id: String,
-    websocket_id: String,
     session_id: String,
-    message: String,
+    message: Option<String>,
+    attachments: Option<Vec<String>>,
     query_params: Option<HashMap<String, Value>>, //search,deep_thinking
-) -> Result<String, String> {
-    let path = format!("/chat/{}/_send", session_id);
-    let msg = ChatRequestMessage {
-        message: Some(message),
+    client_id: String,
+) -> Result<(), String> {
+    println!("chat_chat message: {:?}", message);
+    println!("chat_chat attachments: {:?}", attachments);
+
+    let message_empty = message.as_ref().map_or(true, |m| m.is_empty());
+    let attachments_empty = attachments.as_ref().map_or(true, |a| a.is_empty());
+
+    if message_empty && attachments_empty {
+        return Err("Message and attachments are empty".to_string());
+    }
+
+    let body = {
+        let request_message = ChatRequestMessage {
+            message,
+            attachments,
+        };
+
+        println!("chat_chat body: {:?}", request_message);
+
+        Some(
+            serde_json::to_string(&request_message)
+                .map_err(|e| format!("Failed to serialize message: {}", e))?
+                .into(),
+        )
     };
 
-    let mut headers = HashMap::new();
-    headers.insert("WEBSOCKET-SESSION-ID".to_string(), websocket_id.into());
+    let path = format!("/chat/{}/_chat", session_id);
 
-    let body = reqwest::Body::from(serde_json::to_string(&msg).unwrap());
     let response = HttpClient::advanced_post(
         &server_id,
         path.as_str(),
-        Some(headers),
-        query_params,
-        Some(body),
+        None,
+        convert_query_params_to_strings(query_params),
+        body,
     )
-        .await
-        .map_err(|e| format!("Error cancel session: {}", e))?;
+    .await
+    .map_err(|e| format!("Error sending message: {}", e))?;
 
-    common::http::get_response_body_text(response).await
+    if response.status() == 429 {
+        log::warn!("Rate limit exceeded for chat create");
+        return Err("Rate limited".to_string());
+    }
+
+    if !response.status().is_success() {
+        return Err(format!("Request failed with status: {}", response.status()));
+    }
+
+    let stream = response.bytes_stream();
+    let reader = tokio_util::io::StreamReader::new(
+        stream.map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, e)),
+    );
+    let mut lines = tokio::io::BufReader::new(reader).lines();
+    let mut first_log = true;
+
+    log::info!("client_id: {}", &client_id);
+
+    while let Ok(Some(line)) = lines.next_line().await {
+        log::info!("Received chat stream line: {}", &line);
+        if first_log {
+            log::info!("first stream line: {}", &line);
+            first_log = false;
+        }
+
+        if let Err(err) = app_handle.emit(&client_id, line) {
+            log::error!("Emit failed: {:?}", err);
+
+            print!("Error sending message: {:?}", err);
+
+            let _ = app_handle.emit("chat-create-error", format!("Emit failed: {:?}", err));
+        }
+    }
+
+    Ok(())
 }
 
 #[tauri::command]
@@ -219,40 +306,194 @@ pub async fn update_session_chat(
         None,
         Some(reqwest::Body::from(serde_json::to_string(&body).unwrap())),
     )
-        .await
-        .map_err(|e| format!("Error updating session: {}", e))?;
+    .await
+    .map_err(|e| format!("Error updating session: {}", e))?;
 
     Ok(response.status().is_success())
 }
 
 #[tauri::command]
-pub async fn assistant_search<R: Runtime>(
-    _app_handle: AppHandle<R>,
+pub async fn assistant_search(
+    _app_handle: AppHandle,
     server_id: String,
-    from: u32,
-    size: u32,
-    query: Option<HashMap<String, Value>>,
+    query_params: Option<Vec<String>>,
 ) -> Result<Value, String> {
-    let mut body = serde_json::json!({
-        "from": from,
-        "size": size,
-    });
-
-    if let Some(q) = query {
-        body["query"] = serde_json::to_value(q).map_err(|e| e.to_string())?;
-    }
-
-    let response = HttpClient::post(
-        &server_id,
-        "/assistant/_search",
-        None,
-        Some(reqwest::Body::from(body.to_string())),
-    )
-    .await
-    .map_err(|e| format!("Error searching assistants: {}", e))?;
+    let response = HttpClient::post(&server_id, "/assistant/_search", query_params, None)
+        .await
+        .map_err(|e| format!("Error searching assistants: {}", e))?;
 
     response
         .json::<Value>()
         .await
         .map_err(|err| err.to_string())
 }
+
+#[tauri::command]
+pub async fn assistant_get(
+    _app_handle: AppHandle,
+    server_id: String,
+    assistant_id: String,
+) -> Result<Value, String> {
+    let response = HttpClient::get(
+        &server_id,
+        &format!("/assistant/{}", assistant_id),
+        None, // headers
+    )
+    .await
+    .map_err(|e| format!("Error getting assistant: {}", e))?;
+
+    response
+        .json::<Value>()
+        .await
+        .map_err(|err| err.to_string())
+}
+
+/// Gets the information of the assistant specified by `assistant_id` by querying **all**
+/// Coco servers.
+///
+/// Returns as soon as the assistant is found on any Coco server.
+#[tauri::command]
+pub async fn assistant_get_multi(
+    app_handle: AppHandle,
+    assistant_id: String,
+) -> Result<Value, String> {
+    let search_sources = app_handle.state::<SearchSourceRegistry>();
+    let sources_future = search_sources.get_sources();
+    let sources_list = sources_future.await;
+
+    let mut futures = FuturesUnordered::new();
+
+    for query_source in &sources_list {
+        let query_source_type = query_source.get_type();
+        if query_source_type.r#type != COCO_SERVERS {
+            // Assistants only exists on Coco servers.
+            continue;
+        }
+
+        let coco_server_id = query_source_type.id.clone();
+
+        let path = format!("/assistant/{}", assistant_id);
+
+        let fut = async move {
+            let res_response = HttpClient::get(
+                &coco_server_id,
+                &path,
+                None, // headers
+            )
+            .await;
+            match res_response {
+                Ok(response) => response
+                    .json::<serde_json::Value>()
+                    .await
+                    .map_err(|e| e.to_string()),
+                Err(e) => Err(e),
+            }
+        };
+
+        futures.push(fut);
+    }
+
+    while let Some(res_response_json) = futures.next().await {
+        let response_json = match res_response_json {
+            Ok(json) => json,
+            Err(e) => return Err(e),
+        };
+
+        // Example response JSON
+        //
+        // When assistant is not found:
+        // ```json
+        // {
+        //   "_id": "ID",
+        //   "result": "not_found"
+        // }
+        // ```
+        //
+        // When assistant is found:
+        // ```json
+        // {
+        //   "_id": "ID",
+        //   "_source": {...}
+        //   "found": true
+        // }
+        // ```
+        if let Some(found) = response_json.get("found") {
+            if found == true {
+                return Ok(response_json);
+            }
+        }
+    }
+
+    Err(format!(
+        "could not find Assistant [{}] on all the Coco servers",
+        assistant_id
+    ))
+}
+
+use regex::Regex;
+/// Remove all `"icon": "..."` fields from a JSON string
+pub fn remove_icon_fields(json: &str) -> String {
+    // Regex to match `"icon": "..."` fields, including base64 or escaped strings
+    let re = Regex::new(r#""icon"\s*:\s*"[^"]*"(,?)"#).unwrap();
+    // Replace with empty string, or just remove trailing comma if needed
+    re.replace_all(json, |caps: &regex::Captures| {
+        if &caps[1] == "," {
+            "".to_string() // keep comma removal logic safe
+        } else {
+            "".to_string()
+        }
+    })
+    .to_string()
+}
+
+#[tauri::command]
+pub async fn ask_ai(
+    app_handle: AppHandle,
+    message: String,
+    server_id: String,
+    assistant_id: String,
+    client_id: String,
+) -> Result<(), String> {
+    let cleaned = remove_icon_fields(message.as_str());
+
+    let body = serde_json::json!({ "message": cleaned });
+
+    let path = format!("/assistant/{}/_ask", assistant_id);
+
+    println!("Sending request to {}", &path);
+
+    let response = HttpClient::send_request(
+        server_id.as_str(),
+        Method::POST,
+        path.as_str(),
+        None,
+        None,
+        Some(reqwest::Body::from(body.to_string())),
+    )
+    .await?;
+
+    if response.status() == 429 {
+        log::warn!("Rate limit exceeded for assistant: {}", &assistant_id);
+        return Ok(());
+    }
+
+    if !response.status().is_success() {
+        return Err(format!("Request Failed: {}", response.status()));
+    }
+
+    let stream = response.bytes_stream();
+    let reader = tokio_util::io::StreamReader::new(
+        stream.map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, e)),
+    );
+    let mut lines = tokio::io::BufReader::new(reader).lines();
+
+    while let Ok(Some(line)) = lines.next_line().await {
+        dbg!("Received line: {}", &line);
+
+        let _ = app_handle.emit(&client_id, line).map_err(|err| {
+            println!("Failed to emit: {:?}", err);
+        });
+    }
+
+    Ok(())
+}

src-tauri/src/autostart.rs

@@ -1,43 +1,48 @@
 use std::{fs::create_dir, io::Read};
 
-use tauri::{Manager, Runtime};
+use tauri::{AppHandle, Manager};
 use tauri_plugin_autostart::ManagerExt;
 
-// Start or stop according to configuration
-pub fn enable_autostart(app: &mut tauri::App) {
-    use tauri_plugin_autostart::MacosLauncher;
-    use tauri_plugin_autostart::ManagerExt;
+/// If the state reported from the OS and the state stored by us differ, our state is
+/// prioritized and seen as the correct one. Update the OS state to make them consistent.
+pub fn ensure_autostart_state_consistent(tauri_app_handle: &AppHandle) -> Result<(), String> {
+    let autostart_manager = tauri_app_handle.autolaunch();
 
-    app.handle()
-        .plugin(tauri_plugin_autostart::init(
-            MacosLauncher::AppleScript,
-            None,
-        ))
-        .unwrap();
+    let os_state = autostart_manager.is_enabled().map_err(|e| e.to_string())?;
+    let coco_stored_state = current_autostart(tauri_app_handle).map_err(|e| e.to_string())?;
 
-    let autostart_manager = app.autolaunch();
+    if os_state != coco_stored_state {
+        log::warn!(
+            "autostart inconsistent states, OS state [{}], Coco state [{}], config file could be deleted or corrupted",
+            os_state,
+            coco_stored_state
+        );
+        log::info!("trying to correct the inconsistent states");
 
-    // close autostart
-    // autostart_manager.disable().unwrap();
-    // return;
+        let result = if coco_stored_state {
+            autostart_manager.enable()
+        } else {
+            autostart_manager.disable()
+        };
 
-    match (
-        autostart_manager.is_enabled(),
-        current_autostart(app.app_handle()),
-    ) {
-        (Ok(false), Ok(true)) => match autostart_manager.enable() {
-            Ok(_) => println!("Autostart enabled successfully."),
-            Err(err) => eprintln!("Failed to enable autostart: {}", err),
-        },
-        (Ok(true), Ok(false)) => match autostart_manager.disable() {
-            Ok(_) => println!("Autostart disable successfully."),
-            Err(err) => eprintln!("Failed to disable autostart: {}", err),
-        },
-        _ => (),
+        match result {
+            Ok(_) => {
+                log::info!("inconsistent autostart states fixed");
+            }
+            Err(e) => {
+                log::error!(
+                    "failed to fix inconsistent autostart state due to error [{}]",
+                    e
+                );
+                return Err(e.to_string());
+            }
+        }
     }
+
+    Ok(())
 }
 
-fn current_autostart<R: Runtime>(app: &tauri::AppHandle<R>) -> Result<bool, String> {
+fn current_autostart(app: &tauri::AppHandle) -> Result<bool, String> {
     use std::fs::File;
 
     let path = app.path().app_config_dir().unwrap();
@@ -60,10 +65,7 @@ fn current_autostart<R: Runtime>(app: &tauri::AppHandle<R>) -> Result<bool, Stri
 }
 
 #[tauri::command]
-pub async fn change_autostart<R: Runtime>(
-    app: tauri::AppHandle<R>,
-    open: bool,
-) -> Result<(), String> {
+pub async fn change_autostart(app: tauri::AppHandle, open: bool) -> Result<(), String> {
     use std::fs::File;
     use std::io::Write;
 

src-tauri/src/common/assistant.rs

@@ -3,19 +3,22 @@ use serde_json::Value;
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct ChatRequestMessage {
+    #[serde(skip_serializing_if = "Option::is_none")]
     pub message: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub attachments: Option<Vec<String>>,
 }
 
 #[allow(dead_code)]
 pub struct NewChatResponse {
     pub _id: String,
-    pub _source: Source,
+    pub _source: Session,
     pub result: String,
     pub payload: Option<Value>,
 }
 
 #[derive(Debug, Serialize, Deserialize)]
-pub struct Source {
+pub struct Session {
     pub id: String,
     pub created: String,
     pub updated: String,
@@ -23,4 +26,11 @@ pub struct Source {
     pub title: Option<String>,
     pub summary: Option<String>,
     pub manually_renamed_title: bool,
+    pub visible: Option<bool>,
+    pub context: Option<SessionContext>,
+}
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct SessionContext {
+    pub attachments: Option<Vec<String>>,
 }

src-tauri/src/common/connector.rs

@@ -1,6 +1,6 @@
 use serde::{Deserialize, Serialize};
 
-#[derive(Debug,Clone, Serialize, Deserialize)]
+#[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct Connector {
     pub id: String,
     pub created: Option<String>,
@@ -13,7 +13,7 @@ pub struct Connector {
     pub url: Option<String>,
     pub assets: Option<ConnectorAssets>,
 }
-#[derive(Debug,Clone, Serialize, Deserialize)]
+#[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct ConnectorAssets {
     pub icons: Option<std::collections::HashMap<String, String>>,
-}
+}

src-tauri/src/common/datasource.rs

@@ -18,4 +18,4 @@ pub struct DataSource {
 pub struct ConnectorConfig {
     pub id: Option<String>,
     pub config: Option<serde_json::Value>, // Using serde_json::Value to handle any type of config
-}
+}

src-tauri/src/common/document.rs

@@ -1,5 +1,9 @@
+#[cfg(target_os = "macos")]
+use crate::extension::built_in::window_management::actions::Action;
+use crate::extension::{ExtensionPermission, ExtensionSettings};
 use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
+use tauri::{AppHandle, Emitter};
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct RichLabel {
@@ -29,6 +33,229 @@ pub struct EditorInfo {
     pub timestamp: Option<String>,
 }
 
+/// Defines the action that would be performed when a [document](Document) gets opened.
+///
+/// "Document" is a uniform type that the backend uses to send the search results
+/// back to the frontend.  Since Coco can search many sources, "Document" can
+/// represent different things, application, web page, local file, extensions, and
+/// so on.  Each has its own specific open action.
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub(crate) enum OnOpened {
+    /// Launch the application
+    Application { app_path: String },
+    /// Open the URL.
+    Document { url: String },
+    /// Perform this WM action.
+    #[cfg(target_os = "macos")]
+    WindowManagementAction { action: Action },
+    /// The document is an extension.
+    Extension(ExtensionOnOpened),
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub(crate) struct ExtensionOnOpened {
+    /// Different types of extensions have different open behaviors.
+    pub(crate) ty: ExtensionOnOpenedType,
+    /// Extensions settings.  Some could affect open action.
+    ///
+    /// Optional because not all extensions have their settings.
+    pub(crate) settings: Option<ExtensionSettings>,
+    /// Permission needed by this extension.
+    ///
+    /// We do permission check when opening this permission. Currently, we only
+    /// do this to View extensions.
+    pub(crate) permission: Option<ExtensionPermission>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub(crate) enum ExtensionOnOpenedType {
+    /// Spawn a child process to run the `CommandAction`.
+    Command {
+        action: crate::extension::CommandAction,
+    },
+    /// Open the `link`.
+    //
+    // NOTE that this variant has the same definition as `struct Quicklink`, but we
+    // cannot use it directly, its `link` field should be deserialized/serialized
+    // from/to a string, but we need a JSON object here.
+    //
+    // See also the comments in `struct Quicklink`.
+    Quicklink {
+        link: crate::extension::QuicklinkLink,
+        open_with: Option<String>,
+    },
+    View {
+        /// Path to the HTML file that coco will load and render.
+        ///
+        /// It should be an absolute path or Tauri cannot open it.
+        page: String,
+    },
+}
+
+impl OnOpened {
+    pub(crate) fn url(&self) -> String {
+        match self {
+            Self::Application { app_path } => app_path.clone(),
+            Self::Document { url } => url.clone(),
+            #[cfg(target_os = "macos")]
+            Self::WindowManagementAction { action: _ } => {
+                // We don't have URL for this
+                String::from("N/A")
+            }
+            Self::Extension(ext_on_opened) => {
+                match &ext_on_opened.ty {
+                    ExtensionOnOpenedType::Command { action } => {
+                        const WHITESPACE: &str = " ";
+                        let mut ret = action.exec.clone();
+                        ret.push_str(WHITESPACE);
+                        if let Some(ref args) = action.args {
+                            ret.push_str(args.join(WHITESPACE).as_str());
+                        }
+
+                        ret
+                    }
+                    // Currently, our URL is static and does not support dynamic parameters.
+                    // The URL of a quicklink is nearly useless without such dynamic user
+                    // inputs, so until we have dynamic URL support, we just use "N/A".
+                    ExtensionOnOpenedType::Quicklink { .. } => String::from("N/A"),
+                    ExtensionOnOpenedType::View { page: _ } => {
+                        // We currently don't have URL for this kind of extension.
+                        String::from("N/A")
+                    }
+                }
+            }
+        }
+    }
+}
+
+#[tauri::command]
+pub(crate) async fn open(
+    tauri_app_handle: AppHandle,
+    on_opened: OnOpened,
+    extra_args: Option<HashMap<String, String>>,
+) -> Result<(), String> {
+    use crate::util::open as homemade_tauri_shell_open;
+    use std::process::Command;
+
+    match on_opened {
+        OnOpened::Application { app_path } => {
+            log::debug!("open application [{}]", app_path);
+
+            homemade_tauri_shell_open(tauri_app_handle.clone(), app_path).await?
+        }
+        OnOpened::Document { url } => {
+            log::debug!("open document [{}]", url);
+
+            homemade_tauri_shell_open(tauri_app_handle.clone(), url).await?
+        }
+        #[cfg(target_os = "macos")]
+        OnOpened::WindowManagementAction { action } => {
+            log::debug!("perform Window Management action [{:?}]", action);
+
+            crate::extension::built_in::window_management::perform_action_on_main_thread(
+                &tauri_app_handle,
+                action,
+            )?;
+        }
+        OnOpened::Extension(ext_on_opened) => {
+            // Apply the settings that would affect open behavior
+            if let Some(settings) = ext_on_opened.settings {
+                if let Some(should_hide) = settings.hide_before_open {
+                    if should_hide {
+                        crate::hide_coco(tauri_app_handle.clone()).await;
+                    }
+                }
+            }
+            let permission = ext_on_opened.permission;
+
+            match ext_on_opened.ty {
+                ExtensionOnOpenedType::Command { action } => {
+                    log::debug!("open (execute) command [{:?}]", action);
+
+                    let mut cmd = Command::new(action.exec);
+                    if let Some(args) = action.args {
+                        cmd.args(args);
+                    }
+                    let output = cmd.output().map_err(|e| e.to_string())?;
+                    // Sometimes, we wanna see the result in logs even though it doesn't fail.
+                    log::debug!(
+                        "executing open(Command) result, exit code: [{}], stdout: [{}], stderr: [{}]",
+                        output.status,
+                        String::from_utf8_lossy(&output.stdout),
+                        String::from_utf8_lossy(&output.stderr)
+                    );
+                    if !output.status.success() {
+                        log::warn!(
+                            "executing open(Command) failed, exit code: [{}], stdout: [{}], stderr: [{}]",
+                            output.status,
+                            String::from_utf8_lossy(&output.stdout),
+                            String::from_utf8_lossy(&output.stderr)
+                        );
+
+                        return Err(format!(
+                            "Command failed, stderr [{}]",
+                            String::from_utf8_lossy(&output.stderr)
+                        ));
+                    }
+                }
+                ExtensionOnOpenedType::Quicklink {
+                    link,
+                    open_with: opt_open_with,
+                } => {
+                    let url = link.concatenate_url(&extra_args);
+
+                    log::debug!("open quicklink [{}] with [{:?}]", url, opt_open_with);
+
+                    cfg_if::cfg_if! {
+                        // The `open_with` functionality is only supported on macOS, provided
+                        // by the `open -a` command.
+                        if #[cfg(target_os = "macos")] {
+                            let mut cmd = Command::new("open");
+                            if let Some(ref open_with) = opt_open_with {
+                                cmd.arg("-a");
+                                cmd.arg(open_with.as_str());
+                            }
+                            cmd.arg(&url);
+
+                            let output = cmd.output().map_err(|e| format!("failed to spawn [open] due to error [{}]", e))?;
+
+                            if !output.status.success() {
+                              return Err(format!(
+                                "failed to open with app {:?}: {}",
+                                opt_open_with,
+                                String::from_utf8_lossy(&output.stderr)
+                              ));
+                            }
+                        } else {
+                            homemade_tauri_shell_open(tauri_app_handle.clone(), url).await?
+                        }
+                    }
+                }
+                ExtensionOnOpenedType::View { page } => {
+                    /*
+                     * Emit an event to let the frontend code open this extension.
+                     *
+                     * Payload `page_and_permission` contains the information needed
+                     * to do that.
+                     *
+                     * See "src/pages/main/index.tsx" for more info.
+                     */
+                    use serde_json::Value as Json;
+                    use serde_json::to_value;
+
+                    let page_and_permission: [Json; 2] =
+                        [Json::String(page), to_value(permission).unwrap()];
+                    tauri_app_handle
+                        .emit("open_view_extension", page_and_permission)
+                        .unwrap();
+                }
+            }
+        }
+    }
+
+    Ok(())
+}
+
 #[derive(Debug, Clone, Serialize, Deserialize, Default)]
 pub struct Document {
     pub id: String,
@@ -48,6 +275,8 @@ pub struct Document {
     pub thumbnail: Option<String>,
     pub cover: Option<String>,
     pub tags: Option<Vec<String>>,
+    /// What will happen if we open this document.
+    pub on_opened: Option<OnOpened>,
     pub url: Option<String>,
     pub size: Option<i64>,
     pub metadata: Option<HashMap<String, serde_json::Value>>,
@@ -55,39 +284,3 @@ pub struct Document {
     pub owner: Option<UserInfo>,
     pub last_updated_by: Option<EditorInfo>,
 }
-
-impl Document {
-    pub fn new(
-        source: Option<DataSourceReference>,
-        id: String,
-        category: String,
-        name: String,
-        url: String,
-    ) -> Self {
-        Self {
-            id,
-            created: None,
-            updated: None,
-            source,
-            r#type: None,
-            category: Some(category),
-            subcategory: None,
-            categories: None,
-            rich_categories: None,
-            title: Some(name),
-            summary: None,
-            lang: None,
-            content: None,
-            icon: None,
-            thumbnail: None,
-            cover: None,
-            tags: None,
-            url: Some(url),
-            size: None,
-            metadata: None,
-            payload: None,
-            owner: None,
-            last_updated_by: None,
-        }
-    }
-}

src-tauri/src/common/error.rs

@@ -1,34 +1,67 @@
-use serde::{Deserialize, Serialize};
+use reqwest::StatusCode;
+use serde::{Deserialize, Serialize, Serializer};
 use thiserror::Error;
 
+fn serialize_optional_status_code<S>(
+    status_code: &Option<StatusCode>,
+    serializer: S,
+) -> Result<S::Ok, S::Error>
+where
+    S: Serializer,
+{
+    match status_code {
+        Some(code) => serializer.serialize_str(&format!("{:?}", code)),
+        None => serializer.serialize_none(),
+    }
+}
+
+#[allow(unused)]
 #[derive(Debug, Deserialize)]
+pub struct ErrorCause {
+    #[serde(default)]
+    pub r#type: Option<String>,
+    #[serde(default)]
+    pub reason: Option<String>,
+}
+
+#[derive(Debug, Deserialize)]
+#[allow(unused)]
 pub struct ErrorDetail {
-    pub reason: String,
-    pub status: u16,
+    #[serde(default)]
+    pub root_cause: Option<Vec<ErrorCause>>,
+    #[serde(default)]
+    pub r#type: Option<String>,
+    #[serde(default)]
+    pub reason: Option<String>,
+    #[serde(default)]
+    pub caused_by: Option<ErrorCause>,
 }
 
 #[derive(Debug, Deserialize)]
 pub struct ErrorResponse {
-    pub error: ErrorDetail,
+    #[serde(default)]
+    pub error: Option<ErrorDetail>,
+    #[serde(default)]
+    #[allow(unused)]
+    pub status: Option<u16>,
 }
 
 #[derive(Debug, Error, Serialize)]
 pub enum SearchError {
-    #[error("HTTP request failed: {0}")]
-    HttpError(String),
+    #[error("HttpError: status code [{status_code:?}], msg [{msg}]")]
+    HttpError {
+        #[serde(serialize_with = "serialize_optional_status_code")]
+        status_code: Option<StatusCode>,
+        msg: String,
+    },
 
-    #[error("Invalid response format: {0}")]
+    #[error("ParseError: {0}")]
     ParseError(String),
 
     #[error("Timeout occurred")]
     Timeout,
 
-    #[error("Unknown error: {0}")]
-    #[allow(dead_code)]
-    Unknown(String),
-
-    #[error("InternalError error: {0}")]
-    #[allow(dead_code)]
+    #[error("InternalError: {0}")]
     InternalError(String),
 }
 
@@ -39,7 +72,10 @@ impl From<reqwest::Error> for SearchError {
         } else if err.is_decode() {
             SearchError::ParseError(err.to_string())
         } else {
-            SearchError::HttpError(err.to_string())
+            SearchError::HttpError {
+                status_code: err.status(),
+                msg: err.to_string(),
+            }
         }
     }
-}
+}

src-tauri/src/common/http.rs

@@ -2,6 +2,8 @@ use crate::common;
 use reqwest::Response;
 use serde::{Deserialize, Serialize};
 use serde_json::Value;
+use std::collections::HashMap;
+use tauri_plugin_store::JsonValue;
 
 #[derive(Debug, Serialize, Deserialize)]
 pub struct GetResponse {
@@ -24,7 +26,9 @@ pub async fn get_response_body_text(response: Response) -> Result<String, String
     let body = response
         .text()
         .await
-        .map_err(|e| format!("Failed to read response body: {}", e))?;
+        .map_err(|e| format!("Failed to read response body: {}, code: {}", e, status))?;
+
+    log::debug!("Response status: {}, body: {}", status, &body);
 
     if status < 200 || status >= 400 {
         // Try to parse the error body
@@ -38,13 +42,34 @@ pub async fn get_response_body_text(response: Response) -> Result<String, String
             Ok(parsed_error) => {
                 dbg!(&parsed_error);
                 Err(format!(
-                    "Server error ({}): {}",
-                    parsed_error.error.status, parsed_error.error.reason
+                    "Server error ({}): {:?}",
+                    status, parsed_error.error
                 ))
             }
-            Err(_) => Err(fallback_error),
+            Err(_) => {
+                log::warn!("Failed to parse error response: {}", &body);
+                Err(fallback_error)
+            }
         }
     } else {
         Ok(body)
     }
-}
+}
+
+pub fn convert_query_params_to_strings(
+    query_params: Option<HashMap<String, JsonValue>>,
+) -> Option<Vec<String>> {
+    query_params.map(|map| {
+        map.into_iter()
+            .filter_map(|(k, v)| match v {
+                JsonValue::String(s) => Some(format!("{}={}", k, s)),
+                JsonValue::Number(n) => Some(format!("{}={}", k, n)),
+                JsonValue::Bool(b) => Some(format!("{}={}", k, b)),
+                _ => {
+                    eprintln!("Skipping unsupported query value for key '{}': {:?}", k, v);
+                    None
+                }
+            })
+            .collect()
+    })
+}

src-tauri/src/common/mod.rs

@@ -1,16 +1,17 @@
-pub mod health;
-pub mod profile;
-pub mod server;
-pub mod auth;
-pub mod datasource;
-pub mod connector;
-pub mod search;
-pub mod document;
-pub mod traits;
-pub mod register;
 pub mod assistant;
-pub mod http;
+pub mod auth;
+pub mod connector;
+pub mod datasource;
+pub mod document;
 pub mod error;
+pub mod health;
+pub mod http;
+pub mod profile;
+pub mod register;
+pub mod search;
+pub mod server;
+pub mod traits;
 
 pub static MAIN_WINDOW_LABEL: &str = "main";
 pub static SETTINGS_WINDOW_LABEL: &str = "settings";
+pub static CHECK_WINDOW_LABEL: &str = "check";

src-tauri/src/common/profile.rs

@@ -13,4 +13,4 @@ pub struct UserProfile {
     pub email: String,
     pub avatar: Option<String>,
     pub preferences: Option<Preferences>,
-}
+}

src-tauri/src/common/search.rs

@@ -7,8 +7,8 @@ use std::error::Error;
 
 #[derive(Debug, Serialize, Deserialize)]
 pub struct SearchResponse<T> {
-    pub took: u64,
-    pub timed_out: bool,
+    pub took: Option<u64>,
+    pub timed_out: Option<bool>,
     pub _shards: Option<Shards>,
     pub hits: Hits<T>,
 }
@@ -25,7 +25,7 @@ pub struct Shards {
 pub struct Hits<T> {
     pub total: Total,
     pub max_score: Option<f32>,
-    pub hits: Vec<SearchHit<T>>,
+    pub hits: Option<Vec<SearchHit<T>>>,
 }
 
 #[derive(Debug, Serialize, Deserialize)]
@@ -36,9 +36,9 @@ pub struct Total {
 
 #[derive(Debug, Serialize, Deserialize)]
 pub struct SearchHit<T> {
-    pub _index: String,
-    pub _type: String,
-    pub _id: String,
+    pub _index: Option<String>,
+    pub _type: Option<String>,
+    pub _id: Option<String>,
     pub _score: Option<f64>,
     pub _source: T, // This will hold the type we pass in (e.g., DataSource)
 }
@@ -58,13 +58,18 @@ where
     Ok(search_response)
 }
 
+use serde::de::DeserializeOwned;
+
 pub async fn parse_search_hits<T>(response: Response) -> Result<Vec<SearchHit<T>>, Box<dyn Error>>
 where
-    T: for<'de> Deserialize<'de> + std::fmt::Debug,
+    T: DeserializeOwned + std::fmt::Debug,
 {
     let response = parse_search_response(response).await?;
 
-    Ok(response.hits.hits)
+    match response.hits.hits {
+        Some(hits) => Ok(hits),
+        None => Ok(Vec::new()),
+    }
 }
 
 pub async fn parse_search_results<T>(response: Response) -> Result<Vec<T>, Box<dyn Error>>
@@ -78,20 +83,6 @@ where
         .collect())
 }
 
-#[allow(dead_code)]
-pub async fn parse_search_results_with_score<T>(
-    response: Response,
-) -> Result<Vec<(T, Option<f64>)>, Box<dyn Error>>
-where
-    T: for<'de> Deserialize<'de> + std::fmt::Debug,
-{
-    Ok(parse_search_hits(response)
-        .await?
-        .into_iter()
-        .map(|hit| (hit._source, hit._score))
-        .collect())
-}
-
 #[derive(Debug, Clone, Serialize)]
 pub struct SearchQuery {
     pub from: u64,

src-tauri/src/common/server.rs

@@ -1,6 +1,8 @@
 use crate::common::health::Health;
 use crate::common::profile::UserProfile;
 use serde::{Deserialize, Serialize};
+use serde_json::Value;
+use std::collections::HashMap;
 use std::hash::{Hash, Hasher};
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
@@ -48,9 +50,17 @@ pub struct Server {
     pub updated: String,
     #[serde(default = "default_enabled_type")]
     pub enabled: bool,
+    /// Public Coco servers can be used without signing in.
     #[serde(default = "default_bool_type")]
     pub public: bool,
 
+    /// A coco server is available if:
+    ///
+    /// 1. It is still online, we check this via the `GET /base_url/provider/_info`
+    ///    interface.
+    /// 2. A user is logged in to this Coco server, i.e., a token is stored in the
+    ///    `SERVER_TOKEN_LIST_CACHE`.
+    ///    For public Coco servers, requirement 2 is not needed.
     #[serde(default = "default_available_type")]
     pub available: bool,
 
@@ -60,6 +70,7 @@ pub struct Server {
     pub auth_provider: AuthProvider,
     #[serde(default = "default_priority_type")]
     pub priority: u32,
+    pub stats: Option<HashMap<String, Value>>,
 }
 
 impl PartialEq for Server {
@@ -81,7 +92,10 @@ pub struct ServerAccessToken {
     #[serde(default = "default_empty_string")] // Custom default function for empty string
     pub id: String,
     pub access_token: String,
-    pub expired_at: u32, //unix timestamp in seconds
+    /// Unix timestamp in seconds
+    ///
+    /// Currently, this is UNUSED.
+    pub expired_at: u32,
 }
 
 impl ServerAccessToken {

src-tauri/src/common/traits.rs

@@ -1,13 +1,16 @@
 use crate::common::error::SearchError;
-// use std::{future::Future, pin::Pin};
 use crate::common::search::SearchQuery;
 use crate::common::search::{QueryResponse, QuerySource};
 use async_trait::async_trait;
+use tauri::AppHandle;
 
 #[async_trait]
 pub trait SearchSource: Send + Sync {
     fn get_type(&self) -> QuerySource;
 
-    async fn search(&self, query: SearchQuery) -> Result<QueryResponse, SearchError>;
+    async fn search(
+        &self,
+        tauri_app_handle: AppHandle,
+        query: SearchQuery,
+    ) -> Result<QueryResponse, SearchError>;
 }
-

src-tauri/src/extension/api/apis.toml

@@ -0,0 +1,5 @@
+# Complete Coco extension API list grouped by its category.
+
+fs = [
+  "read_dir"
+]

src-tauri/src/extension/api/fs.rs

@@ -0,0 +1,22 @@
+//! File system APIs
+
+use tokio::fs::read_dir as tokio_read_dir;
+
+#[tauri::command]
+pub(crate) async fn read_dir(path: String) -> Result<Vec<String>, String> {
+    let mut iter = tokio_read_dir(path).await.map_err(|e| e.to_string())?;
+
+    let mut file_names = Vec::new();
+
+    loop {
+        let opt_entry = iter.next_entry().await.map_err(|e| e.to_string())?;
+        let Some(entry) = opt_entry else {
+            break;
+        };
+
+        let file_name = entry.file_name().to_string_lossy().into_owned();
+        file_names.push(file_name);
+    }
+
+    Ok(file_names)
+}

src-tauri/src/extension/api/mod.rs

@@ -0,0 +1,21 @@
+//! The Rust implementation of the Coco extension APIs.
+//!
+//! Extension developers do not use these Rust APIs directly, they use our
+//! [Typescript library][ts_lib], which eventually calls these APIs.
+//!
+//! [ts_lib]: https://github.com/infinilabs/coco-api
+
+pub(crate) mod fs;
+
+use std::collections::HashMap;
+
+/// Return all the available APIs grouped by their category.
+#[tauri::command]
+pub(crate) fn apis() -> HashMap<String, Vec<String>> {
+    static APIS_TOML: &str = include_str!("./apis.toml");
+
+    let apis: HashMap<String, Vec<String>> =
+        toml::from_str(APIS_TOML).expect("Failed to parse apis.toml file");
+
+    apis
+}

src-tauri/src/extension/built_in/ai_overview.rs

@@ -0,0 +1,13 @@
+pub(super) const EXTENSION_ID: &str = "AIOverview";
+
+/// JSON file for this extension.
+pub(crate) const PLUGIN_JSON_FILE: &str = r#"
+{
+  "id": "AIOverview",
+  "name": "AI Overview",
+  "description": "...",
+  "icon": "font_a-AIOverview",
+  "type": "ai_extension",
+  "enabled": true
+}
+"#;

src-tauri/src/extension/built_in/application/mod.rs

@@ -0,0 +1,50 @@
+use serde::Serialize;
+
+#[cfg(feature = "use_pizza_engine")]
+mod with_feature;
+
+#[cfg(not(feature = "use_pizza_engine"))]
+mod without_feature;
+
+#[cfg(feature = "use_pizza_engine")]
+pub use with_feature::*;
+
+#[cfg(not(feature = "use_pizza_engine"))]
+pub use without_feature::*;
+
+#[derive(Debug, Serialize, Clone)]
+#[serde(rename_all = "camelCase")]
+#[allow(dead_code)]
+
+pub struct AppEntry {
+    path: String,
+    name: String,
+    icon_path: String,
+    alias: String,
+    hotkey: String,
+    is_disabled: bool,
+}
+
+#[derive(serde::Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct AppMetadata {
+    name: String,
+    r#where: String,
+    size: u64,
+    created: u128,
+    modified: u128,
+    last_opened: u128,
+}
+
+/// JSON file for this extension.
+pub(crate) const PLUGIN_JSON_FILE: &str = r#"
+{
+  "id": "Applications",
+  "platforms": ["macos", "linux", "windows"],
+  "name": "Applications",
+  "description": "Application search",
+  "icon": "font_Application",
+  "type": "group",
+  "enabled": true
+}
+"#;

src-tauri/src/extension/built_in/application/without_feature.rs

@@ -0,0 +1,128 @@
+use super::super::Extension;
+use super::AppMetadata;
+use crate::common::error::SearchError;
+use crate::common::search::{QueryResponse, QuerySource, SearchQuery};
+use crate::common::traits::SearchSource;
+use crate::extension::LOCAL_QUERY_SOURCE_TYPE;
+use async_trait::async_trait;
+use tauri::AppHandle;
+
+pub(crate) const QUERYSOURCE_ID_DATASOURCE_ID_DATASOURCE_NAME: &str = "Applications";
+
+pub struct ApplicationSearchSource;
+
+impl ApplicationSearchSource {
+    pub async fn prepare_index_and_store(_app_handle: AppHandle) -> Result<(), String> {
+        Ok(())
+    }
+}
+
+#[async_trait]
+impl SearchSource for ApplicationSearchSource {
+    fn get_type(&self) -> QuerySource {
+        QuerySource {
+            r#type: LOCAL_QUERY_SOURCE_TYPE.into(),
+            name: hostname::get()
+                .unwrap_or("My Computer".into())
+                .to_string_lossy()
+                .into(),
+            id: QUERYSOURCE_ID_DATASOURCE_ID_DATASOURCE_NAME.into(),
+        }
+    }
+
+    async fn search(
+        &self,
+        _tauri_app_handle: AppHandle,
+        _query: SearchQuery,
+    ) -> Result<QueryResponse, SearchError> {
+        Ok(QueryResponse {
+            source: self.get_type(),
+            hits: Vec::new(),
+            total_hits: 0,
+        })
+    }
+}
+
+pub fn set_app_alias(_tauri_app_handle: &AppHandle, _app_path: &str, _alias: &str) {
+    unreachable!("app list should be empty, there is no way this can be invoked")
+}
+
+pub fn register_app_hotkey(
+    _tauri_app_handle: &AppHandle,
+    _app_path: &str,
+    _hotkey: &str,
+) -> Result<(), String> {
+    unreachable!("app list should be empty, there is no way this can be invoked")
+}
+
+pub fn unregister_app_hotkey(_tauri_app_handle: &AppHandle, _app_path: &str) -> Result<(), String> {
+    unreachable!("app list should be empty, there is no way this can be invoked")
+}
+
+pub fn disable_app_search(_tauri_app_handle: &AppHandle, _app_path: &str) -> Result<(), String> {
+    // no-op
+    Ok(())
+}
+
+pub fn enable_app_search(_tauri_app_handle: &AppHandle, _app_path: &str) -> Result<(), String> {
+    // no-op
+    Ok(())
+}
+
+pub fn is_app_search_enabled(_app_path: &str) -> bool {
+    false
+}
+
+#[tauri::command]
+pub async fn add_app_search_path(
+    _tauri_app_handle: AppHandle,
+    _search_path: String,
+) -> Result<(), String> {
+    // no-op
+    Ok(())
+}
+
+#[tauri::command]
+pub async fn remove_app_search_path(
+    _tauri_app_handle: AppHandle,
+    _search_path: String,
+) -> Result<(), String> {
+    // no-op
+    Ok(())
+}
+
+#[tauri::command]
+pub async fn get_app_search_path(_tauri_app_handle: AppHandle) -> Vec<String> {
+    // Return an empty list
+    Vec::new()
+}
+
+#[tauri::command]
+pub async fn get_app_list(_tauri_app_handle: AppHandle) -> Result<Vec<Extension>, String> {
+    // Return an empty list
+    Ok(Vec::new())
+}
+
+#[tauri::command]
+pub async fn get_app_metadata(
+    _tauri_app_handle: AppHandle,
+    _app_path: String,
+) -> Result<AppMetadata, String> {
+    unreachable!("app list should be empty, there is no way this can be invoked")
+}
+
+pub(crate) fn set_apps_hotkey(_tauri_app_handle: &AppHandle) -> Result<(), String> {
+    // no-op
+    Ok(())
+}
+
+pub(crate) fn unset_apps_hotkey(_tauri_app_handle: &AppHandle) -> Result<(), String> {
+    // no-op
+    Ok(())
+}
+
+#[tauri::command]
+pub async fn reindex_applications(_tauri_app_handle: AppHandle) -> Result<(), String> {
+    // no-op
+    Ok(())
+}

src-tauri/src/extension/built_in/calculator.rs

@@ -1,4 +1,4 @@
-use super::LOCAL_QUERY_SOURCE_TYPE;
+use super::super::LOCAL_QUERY_SOURCE_TYPE;
 use crate::common::{
     document::{DataSourceReference, Document},
     error::SearchError,
@@ -10,8 +10,22 @@ use chinese_number::{ChineseCase, ChineseCountMethod, ChineseVariant, NumberToCh
 use num2words::Num2Words;
 use serde_json::Value;
 use std::collections::HashMap;
+use tauri::AppHandle;
 
-const DATA_SOURCE_ID: &str = "Calculator";
+pub(crate) const DATA_SOURCE_ID: &str = "Calculator";
+
+/// JSON file for this extension.
+pub(crate) const PLUGIN_JSON_FILE: &str = r#"
+{
+  "id": "Calculator",
+  "name": "Calculator",
+  "platforms": ["macos", "linux", "windows"],
+  "description": "...",
+  "icon": "font_Calculator",
+  "type": "calculator",
+  "enabled": true
+}
+"#;
 
 pub struct CalculatorSource {
     base_score: f64,
@@ -23,7 +37,7 @@ impl CalculatorSource {
     }
 }
 
-fn parse_query(query: String) -> Value {
+fn parse_query(query: &str) -> Value {
     let mut query_json = serde_json::Map::new();
 
     let operators = ["+", "-", "*", "/", "%"];
@@ -48,7 +62,7 @@ fn parse_query(query: String) -> Value {
         query_json.insert("type".to_string(), Value::String("expression".to_string()));
     }
 
-    query_json.insert("value".to_string(), Value::String(query));
+    query_json.insert("value".to_string(), Value::String(query.to_string()));
 
     Value::Object(query_json)
 }
@@ -107,12 +121,22 @@ impl SearchSource for CalculatorSource {
         }
     }
 
-    async fn search(&self, query: SearchQuery) -> Result<QueryResponse, SearchError> {
-        let query_string = query
-            .query_strings
-            .get("query")
-            .unwrap_or(&"".to_string())
-            .to_string();
+    async fn search(
+        &self,
+        _tauri_app_handle: AppHandle,
+        query: SearchQuery,
+    ) -> Result<QueryResponse, SearchError> {
+        let Some(query_string) = query.query_strings.get("query") else {
+            return Ok(QueryResponse {
+                source: self.get_type(),
+                hits: Vec::new(),
+                total_hits: 0,
+            });
+        };
+
+        // Trim the leading and tailing whitespace so that our later if condition
+        // will only be evaluated against non-whitespace characters.
+        let query_string = query_string.trim();
 
         if query_string.is_empty() || query_string.len() == 1 {
             return Ok(QueryResponse {
@@ -122,42 +146,54 @@ impl SearchSource for CalculatorSource {
             });
         }
 
-        match meval::eval_str(&query_string) {
-            Ok(num) => {
-                let mut payload: HashMap<String, Value> = HashMap::new();
+        let query_string_clone = query_string.to_string();
+        let query_source = self.get_type();
+        let base_score = self.base_score;
+        let closure = move || -> QueryResponse {
+            let res_num = meval::eval_str(&query_string_clone);
 
-                let payload_query = parse_query(query_string);
-                let payload_result = parse_result(num);
+            match res_num {
+                Ok(num) => {
+                    let mut payload: HashMap<String, Value> = HashMap::new();
 
-                payload.insert("query".to_string(), payload_query);
-                payload.insert("result".to_string(), payload_result);
+                    let payload_query = parse_query(&query_string_clone);
+                    let payload_result = parse_result(num);
 
-                let doc = Document {
-                    id: DATA_SOURCE_ID.to_string(),
-                    category: Some(DATA_SOURCE_ID.to_string()),
-                    payload: Some(payload),
-                    source: Some(DataSourceReference {
-                        r#type: Some(LOCAL_QUERY_SOURCE_TYPE.into()),
-                        name: Some(DATA_SOURCE_ID.into()),
-                        id: Some(DATA_SOURCE_ID.into()),
-                        icon: None,
-                    }),
-                    ..Default::default()
-                };
+                    payload.insert("query".to_string(), payload_query);
+                    payload.insert("result".to_string(), payload_result);
 
-                return Ok(QueryResponse {
-                    source: self.get_type(),
-                    hits: vec![(doc, self.base_score)],
-                    total_hits: 1,
-                });
-            }
-            Err(_) => {
-                return Ok(QueryResponse {
-                    source: self.get_type(),
+                    let doc = Document {
+                        id: DATA_SOURCE_ID.to_string(),
+                        category: Some(DATA_SOURCE_ID.to_string()),
+                        payload: Some(payload),
+                        source: Some(DataSourceReference {
+                            r#type: Some(LOCAL_QUERY_SOURCE_TYPE.into()),
+                            name: Some(DATA_SOURCE_ID.into()),
+                            id: Some(DATA_SOURCE_ID.into()),
+                            icon: Some(String::from("font_Calculator")),
+                        }),
+                        ..Default::default()
+                    };
+
+                    QueryResponse {
+                        source: query_source,
+                        hits: vec![(doc, base_score)],
+                        total_hits: 1,
+                    }
+                }
+                Err(_) => QueryResponse {
+                    source: query_source,
                     hits: Vec::new(),
                     total_hits: 0,
-                });
+                },
             }
         };
+
+        let spawn_result = tokio::task::spawn_blocking(closure).await;
+
+        match spawn_result {
+            Ok(response) => Ok(response),
+            Err(e) => std::panic::resume_unwind(e.into_panic()),
+        }
     }
 }

src-tauri/src/extension/built_in/file_search/config.rs

@@ -0,0 +1,216 @@
+//! File Search configuration entries definition and getter/setter functions.
+
+use crate::extension::built_in::file_search::implementation::apply_config;
+use serde::Deserialize;
+use serde::Serialize;
+use serde_json::Value;
+use std::sync::LazyLock;
+use tauri::AppHandle;
+use tauri_plugin_store::StoreExt;
+
+// Tauri store keys for file system configuration
+const TAURI_STORE_FILE_SYSTEM_CONFIG: &str = "file_system_config";
+const TAURI_STORE_KEY_SEARCH_BY: &str = "search_by";
+const TAURI_STORE_KEY_SEARCH_PATHS: &str = "search_paths";
+const TAURI_STORE_KEY_EXCLUDE_PATHS: &str = "exclude_paths";
+const TAURI_STORE_KEY_FILE_TYPES: &str = "file_types";
+
+static HOME_DIR: LazyLock<String> = LazyLock::new(|| {
+    let os_string = dirs::home_dir()
+        .expect("$HOME should be set")
+        .into_os_string();
+    os_string
+        .into_string()
+        .expect("User home directory should be encoded with UTF-8")
+});
+
+#[derive(Debug, Clone, Serialize, Deserialize, Copy, PartialEq)]
+pub enum SearchBy {
+    Name,
+    NameAndContents,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct FileSearchConfig {
+    pub search_paths: Vec<String>,
+    pub exclude_paths: Vec<String>,
+    pub file_types: Vec<String>,
+    pub search_by: SearchBy,
+}
+
+impl Default for FileSearchConfig {
+    fn default() -> Self {
+        Self {
+            search_paths: vec![
+                format!("{}/Documents", HOME_DIR.as_str()),
+                format!("{}/Desktop", HOME_DIR.as_str()),
+                format!("{}/Downloads", HOME_DIR.as_str()),
+            ],
+            exclude_paths: Vec::new(),
+            file_types: Vec::new(),
+            search_by: SearchBy::Name,
+        }
+    }
+}
+
+impl FileSearchConfig {
+    pub(crate) fn get(tauri_app_handle: &AppHandle) -> Self {
+        let store = tauri_app_handle
+            .store(TAURI_STORE_FILE_SYSTEM_CONFIG)
+            .unwrap_or_else(|e| {
+                panic!(
+                    "store [{}] not found/loaded, error [{}]",
+                    TAURI_STORE_FILE_SYSTEM_CONFIG, e
+                )
+            });
+
+        // Default value, will be used when specific config entries are not set
+        let default_config = FileSearchConfig::default();
+
+        let search_paths = {
+            if let Some(search_paths) = store.get(TAURI_STORE_KEY_SEARCH_PATHS) {
+                match search_paths {
+                    Value::Array(arr) => {
+                        let mut vec = Vec::with_capacity(arr.len());
+                        for v in arr {
+                            match v {
+                                Value::String(s) => vec.push(s),
+                                other => panic!(
+                                    "Expected all elements of 'search_paths' to be strings, but found: {:?}",
+                                    other
+                                ),
+                            }
+                        }
+                        vec
+                    }
+                    other => panic!(
+                        "Expected 'search_paths' to be an array of strings in the file system config store, but got: {:?}",
+                        other
+                    ),
+                }
+            } else {
+                store.set(
+                    TAURI_STORE_KEY_SEARCH_PATHS,
+                    default_config.search_paths.as_slice(),
+                );
+                default_config.search_paths
+            }
+        };
+
+        let exclude_paths = {
+            if let Some(exclude_paths) = store.get(TAURI_STORE_KEY_EXCLUDE_PATHS) {
+                match exclude_paths {
+                    Value::Array(arr) => {
+                        let mut vec = Vec::with_capacity(arr.len());
+                        for v in arr {
+                            match v {
+                                Value::String(s) => vec.push(s),
+                                other => panic!(
+                                    "Expected all elements of 'exclude_paths' to be strings, but found: {:?}",
+                                    other
+                                ),
+                            }
+                        }
+                        vec
+                    }
+                    other => panic!(
+                        "Expected 'exclude_paths' to be an array of strings in the file system config store, but got: {:?}",
+                        other
+                    ),
+                }
+            } else {
+                store.set(
+                    TAURI_STORE_KEY_EXCLUDE_PATHS,
+                    default_config.exclude_paths.as_slice(),
+                );
+                default_config.exclude_paths
+            }
+        };
+
+        let file_types = {
+            if let Some(file_types) = store.get(TAURI_STORE_KEY_FILE_TYPES) {
+                match file_types {
+                    Value::Array(arr) => {
+                        let mut vec = Vec::with_capacity(arr.len());
+                        for v in arr {
+                            match v {
+                                Value::String(s) => vec.push(s),
+                                other => panic!(
+                                    "Expected all elements of 'file_types' to be strings, but found: {:?}",
+                                    other
+                                ),
+                            }
+                        }
+                        vec
+                    }
+                    other => panic!(
+                        "Expected 'file_types' to be an array of strings in the file system config store, but got: {:?}",
+                        other
+                    ),
+                }
+            } else {
+                store.set(
+                    TAURI_STORE_KEY_FILE_TYPES,
+                    default_config.file_types.as_slice(),
+                );
+                default_config.file_types
+            }
+        };
+
+        let search_by = {
+            if let Some(search_by) = store.get(TAURI_STORE_KEY_SEARCH_BY) {
+                serde_json::from_value(search_by.clone()).unwrap_or_else(|e| {
+                    panic!(
+                        "Failed to deserialize 'search_by' from file system config store. Invalid JSON: {:?}, error: {}",
+                        search_by, e
+                    )
+                })
+            } else {
+                store.set(
+                    TAURI_STORE_KEY_SEARCH_BY,
+                    serde_json::to_value(default_config.search_by).unwrap(),
+                );
+                default_config.search_by
+            }
+        };
+
+        Self {
+            search_by,
+            search_paths,
+            exclude_paths,
+            file_types,
+        }
+    }
+}
+
+// Tauri commands for managing file system configuration
+#[tauri::command]
+pub async fn get_file_system_config(tauri_app_handle: AppHandle) -> FileSearchConfig {
+    FileSearchConfig::get(&tauri_app_handle)
+}
+
+#[tauri::command]
+pub async fn set_file_system_config(
+    tauri_app_handle: AppHandle,
+    config: FileSearchConfig,
+) -> Result<(), String> {
+    let store = tauri_app_handle
+        .store(TAURI_STORE_FILE_SYSTEM_CONFIG)
+        .map_err(|e| e.to_string())?;
+
+    store.set(TAURI_STORE_KEY_SEARCH_PATHS, config.search_paths.as_slice());
+    store.set(
+        TAURI_STORE_KEY_EXCLUDE_PATHS,
+        config.exclude_paths.as_slice(),
+    );
+    store.set(TAURI_STORE_KEY_FILE_TYPES, config.file_types.as_slice());
+    store.set(
+        TAURI_STORE_KEY_SEARCH_BY,
+        serde_json::to_value(config.search_by).unwrap(),
+    );
+
+    // Apply the config when we know that this set operation won't fail
+    apply_config(&config)?;
+
+    Ok(())
+}

src-tauri/src/extension/built_in/file_search/implementation/linux/gnome.rs

@@ -0,0 +1,388 @@
+//! File system powered by GNOME's Tracker engine.
+
+use super::super::super::EXTENSION_ID;
+use super::super::super::config::FileSearchConfig;
+use super::super::should_be_filtered_out;
+use crate::common::document::DataSourceReference;
+use crate::extension::LOCAL_QUERY_SOURCE_TYPE;
+use crate::util::file::sync_get_file_icon;
+use crate::{
+    common::document::{Document, OnOpened},
+    extension::built_in::file_search::config::SearchBy,
+};
+use camino::Utf8Path;
+use gio::Cancellable;
+use gio::Settings;
+use gio::prelude::SettingsExtManual;
+use glib::GString;
+use glib::collections::strv::StrV;
+use tracker::{SparqlConnection, SparqlCursor, prelude::SparqlCursorExtManual};
+
+/// The service that we will connect to.
+const SERVICE_NAME: &str = "org.freedesktop.Tracker3.Miner.Files";
+
+/// Tracker won't return scores when we are not using full-text seach.  In that
+/// case, we use this score.
+const SCORE: f64 = 1.0;
+
+/// Helper function to return different SPARQL queries depending on the different configurations.
+fn query_sparql(query_string: &str, config: &FileSearchConfig) -> String {
+    match config.search_by {
+        SearchBy::Name => {
+            // Cannot use the inverted index as that searches for all the attributes,
+            // but we only want to search the filename.
+            format!(
+                "SELECT nie:url(?file_item) WHERE {{ ?file_item nfo:fileName ?fileName . FILTER(regex(?fileName, '{query_string}', 'i')) }}"
+            )
+        }
+        SearchBy::NameAndContents => {
+            // Full-text search against all attributes
+            // OR
+            // filename search
+            format!(
+                "SELECT nie:url(?file_item) fts:rank(?file_item) WHERE {{ {{ ?file_item fts:match '{query_string}' }} UNION {{ ?file_item nfo:fileName ?fileName . FILTER(regex(?fileName, '{query_string}', 'i'))  }} }} ORDER BY DESC fts:rank(?file_item)"
+            )
+        }
+    }
+}
+
+/// Helper function to replace unsupported characters with whitespace.
+///
+/// Tracker will error out if it encounters these characters.
+///
+/// The complete list of unsupported characters is unknown and we don't know how
+/// to escape them, so let's replace them.
+fn query_string_cleanup(old: &str) -> String {
+    const UNSUPPORTED_CHAR: [char; 3] = ['\'', '\n', '\\'];
+
+    // Using len in bytes is ok
+    let mut chars = Vec::with_capacity(old.len());
+    for char in old.chars() {
+        if UNSUPPORTED_CHAR.contains(&char) {
+            chars.push(' ');
+        } else {
+            chars.push(char);
+        }
+    }
+
+    chars.into_iter().collect()
+}
+
+struct Query {
+    conn: SparqlConnection,
+    cursor: SparqlCursor,
+}
+
+impl Query {
+    fn new(query_string: &str, config: &FileSearchConfig) -> Result<Self, String> {
+        let query_string = query_string_cleanup(query_string);
+        let sparql = query_sparql(&query_string, config);
+        let conn =
+            SparqlConnection::bus_new(SERVICE_NAME, None, None).map_err(|e| e.to_string())?;
+        let cursor = conn
+            .query(&sparql, Cancellable::NONE)
+            .map_err(|e| e.to_string())?;
+
+        Ok(Self { conn, cursor })
+    }
+}
+
+impl Drop for Query {
+    fn drop(&mut self) {
+        self.cursor.close();
+        self.conn.close();
+    }
+}
+
+impl Iterator for Query {
+    /// It yields a tuple `(file path, score)`
+    type Item = Result<(String, f64), String>;
+
+    fn next(&mut self) -> Option<Self::Item> {
+        loop {
+            let has_next = match self
+                .cursor
+                .next(Cancellable::NONE)
+                .map_err(|e| e.to_string())
+            {
+                Ok(has_next) => has_next,
+                Err(err_str) => return Some(Err(err_str)),
+            };
+
+            if !has_next {
+                return None;
+            }
+
+            // The first column is the URL
+            let file_url_column = self.cursor.string(0);
+            // It could be None (or NULL ptr if you use C), I have no clue why.
+            let opt_str = file_url_column.as_ref().map(|gstr| gstr.as_str());
+
+            match opt_str {
+                Some(url) => {
+                    // The returned URL has a prefix that we need to trim
+                    const PREFIX: &str = "file://";
+                    const PREFIX_LEN: usize = PREFIX.len();
+
+                    let file_path = url[PREFIX_LEN..].to_string();
+                    assert!(!file_path.is_empty());
+                    assert_ne!(file_path, "/", "file search should not hit the root path");
+
+                    let score = {
+                        // The second column is the score, this column may not
+                        // exist.  We use SCORE if the real value is absent.
+                        let score_column = self.cursor.string(1);
+                        let opt_score_str = score_column.as_ref().map(|g_str| g_str.as_str());
+                        let opt_score = opt_score_str.map(|str| {
+                            str.parse::<f64>()
+                                .expect("score should be valid for type f64")
+                        });
+
+                        opt_score.unwrap_or(SCORE)
+                    };
+
+                    return Some(Ok((file_path, score)));
+                }
+                None => {
+                    // another try
+                    continue;
+                }
+            }
+        }
+    }
+}
+
+pub(crate) async fn hits(
+    query_string: &str,
+    from: usize,
+    size: usize,
+    config: &FileSearchConfig,
+) -> Result<Vec<(Document, f64)>, String> {
+    // Special cases that will make querying faster.
+    if query_string.is_empty() || size == 0 || config.search_paths.is_empty() {
+        return Ok(Vec::new());
+    }
+
+    let mut result_hits = Vec::with_capacity(size);
+
+    let need_to_skip = {
+        if matches!(config.search_by, SearchBy::Name) {
+            // We don't use full-text search in this case, the returned documents
+            // won't be scored, the query hits won't be sorted, so processing the
+            // from parameter is meaningless.
+            false
+        } else {
+            from > 0
+        }
+    };
+    let mut num_skipped = 0;
+    let should_skip = from;
+
+    let query = Query::new(query_string, config)?;
+    for res_entry in query {
+        let (file_path, score) = res_entry?;
+
+        // This should be called before processing the `from` parameter.
+        if should_be_filtered_out(config, &file_path, true, true, true) {
+            continue;
+        }
+
+        // Process the `from` parameter.
+        if need_to_skip && num_skipped < should_skip {
+            // Skip this
+            num_skipped += 1;
+            continue;
+        }
+
+        let icon = sync_get_file_icon(&file_path);
+        let file_path_of_type_path = camino::Utf8Path::new(&file_path);
+        let r#where = file_path_of_type_path
+            .parent()
+            .unwrap_or_else(|| {
+                panic!(
+                    "expect path [{}] to have a parent, but it does not",
+                    file_path
+                );
+            })
+            .to_string();
+
+        let file_name = file_path_of_type_path.file_name().unwrap_or_else(|| {
+            panic!(
+                "expect path [{}] to have a file name, but it does not",
+                file_path
+            );
+        });
+        let on_opened = OnOpened::Document {
+            url: file_path.to_string(),
+        };
+
+        let doc = Document {
+            id: file_path.to_string(),
+            title: Some(file_name.to_string()),
+            source: Some(DataSourceReference {
+                r#type: Some(LOCAL_QUERY_SOURCE_TYPE.into()),
+                name: Some(EXTENSION_ID.into()),
+                id: Some(EXTENSION_ID.into()),
+                icon: Some(String::from("font_Filesearch")),
+            }),
+            category: Some(r#where),
+            on_opened: Some(on_opened),
+            url: Some(file_path),
+            icon: Some(icon.to_string()),
+            ..Default::default()
+        };
+
+        result_hits.push((doc, score));
+
+        // Collected enough documents, return
+        if result_hits.len() >= size {
+            break;
+        }
+    }
+
+    Ok(result_hits)
+}
+
+fn ensure_path_in_recursive_indexing_scope(list: &mut StrV, path: &str) {
+    for item in list.iter() {
+        let item_path = Utf8Path::new(item.as_str());
+        let path = Utf8Path::new(path);
+
+        // It is already covered or listed
+        if path.starts_with(item_path) {
+            return;
+        }
+    }
+    list.push(
+        GString::from_utf8_checked(path.as_bytes().to_vec())
+            .expect("search_path_str contains an interior NUL"),
+    );
+}
+
+fn ensure_path_and_descendants_not_in_single_indexing_scope(list: &mut StrV, path: &str) {
+    // Indexes to the items that should be removed
+    let mut item_to_remove = Vec::new();
+    for (idx, item) in list.iter().enumerate() {
+        let item_path = Utf8Path::new(item.as_str());
+        let path = Utf8Path::new(path);
+
+        if item_path.starts_with(path) {
+            item_to_remove.push(idx);
+        }
+    }
+
+    // Reverse the indexes so that the remove operation won't invalidate them.
+    for idx in item_to_remove.into_iter().rev() {
+        list.remove(idx);
+    }
+}
+
+pub(crate) fn apply_config(config: &FileSearchConfig) -> Result<(), String> {
+    // Tracker provides the following configuration entries to allow users to
+    // tweak the indexing scope:
+    //
+    // 1. ignored-directories: A list of names, directories with such names will be ignored.
+    //    ['po', 'CVS', 'core-dumps', 'lost+found']
+    // 2. ignored-directories-with-content: Avoid any directory containing a file blocklisted here
+    //    ['.trackerignore', '.git', '.hg', '.nomedia']
+    // 3. ignored-files: List of file patterns to avoid
+    //    ['*~', '*.o', '*.la', '*.lo', '*.loT', '*.in', '*.m4', '*.rej', ...]
+    // 4. index-recursive-directories: List of directories to index recursively
+    //    ['&DESKTOP', '&DOCUMENTS', '&MUSIC', '&PICTURES', '&VIDEOS']
+    // 5. index-single-directories: List of directories to index without inspecting subfolders,
+    //    ['$HOME', '&DOWNLOAD']
+    //
+    // The first 3 entries specify patterns, in order to use them, we have to walk
+    // through the whole directory tree listed in search paths, which is impractical.
+    // So we only use the last 2 entries.
+    //
+    //
+    // Just want to mention that setting search path to "/home" could break Tracker:
+    //
+    // ```text
+    // Unknown target graph for uri:'file:///home' and mime:'inode/directory'
+    // ```
+    //
+    // See the related bug reports:
+    //
+    // https://gitlab.gnome.org/GNOME/localsearch/-/issues/313
+    // https://bugs.launchpad.net/bugs/2077181
+    //
+    //
+    // There is nothing we can do.
+
+    const TRACKER_SETTINGS_SCHEMA: &str = "org.freedesktop.Tracker3.Miner.Files";
+    const KEY_INDEX_RECURSIVE_DIRECTORIES: &str = "index-recursive-directories";
+    const KEY_INDEX_SINGLE_DIRECTORIES: &str = "index-single-directories";
+
+    let search_paths = &config.search_paths;
+
+    let settings = Settings::new(TRACKER_SETTINGS_SCHEMA);
+    let mut recursive_list: StrV = settings.strv(KEY_INDEX_RECURSIVE_DIRECTORIES);
+    let mut single_list: StrV = settings.strv(KEY_INDEX_SINGLE_DIRECTORIES);
+
+    for search_path in search_paths {
+        // We want our search path to be included in the recursive directories or
+        // any directory within the list covers it.
+        ensure_path_in_recursive_indexing_scope(&mut recursive_list, search_path);
+        // We want our search path and its any descendants are not listed in
+        // the index directories list.
+        ensure_path_and_descendants_not_in_single_indexing_scope(&mut single_list, search_path);
+    }
+
+    settings
+        .set_strv(KEY_INDEX_RECURSIVE_DIRECTORIES, recursive_list)
+        .expect("key is not read-only");
+    settings
+        .set_strv(KEY_INDEX_SINGLE_DIRECTORIES, single_list)
+        .expect("key is not be read-only");
+
+    Ok(())
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_query_string_cleanup_basic() {
+        assert_eq!(query_string_cleanup("test"), "test");
+        assert_eq!(query_string_cleanup("hello world"), "hello world");
+        assert_eq!(query_string_cleanup("file.txt"), "file.txt");
+    }
+
+    #[test]
+    fn test_query_string_cleanup_unsupported_chars() {
+        assert_eq!(query_string_cleanup("test'file"), "test file");
+        assert_eq!(query_string_cleanup("test\nfile"), "test file");
+        assert_eq!(query_string_cleanup("test\\file"), "test file");
+    }
+
+    #[test]
+    fn test_query_string_cleanup_multiple_unsupported() {
+        assert_eq!(query_string_cleanup("test'file\nname"), "test file name");
+        assert_eq!(query_string_cleanup("test\'file"), "test file");
+        assert_eq!(query_string_cleanup("\n'test"), "  test");
+    }
+
+    #[test]
+    fn test_query_string_cleanup_edge_cases() {
+        assert_eq!(query_string_cleanup(""), "");
+        assert_eq!(query_string_cleanup("'"), " ");
+        assert_eq!(query_string_cleanup("\n"), " ");
+        assert_eq!(query_string_cleanup("\\"), " ");
+        assert_eq!(query_string_cleanup(" '\n\\ "), "     ");
+    }
+
+    #[test]
+    fn test_query_string_cleanup_mixed_content() {
+        assert_eq!(
+            query_string_cleanup("document's content\nwith\\backslash"),
+            "document s content with backslash"
+        );
+        assert_eq!(
+            query_string_cleanup("path/to'file\nextension\\test"),
+            "path/to file extension test"
+        );
+    }
+}

src-tauri/src/extension/built_in/file_search/implementation/linux/kde.rs

@@ -0,0 +1,308 @@
+//! File search for KDE, powered by its Baloo engine.
+
+use super::super::super::EXTENSION_ID;
+use super::super::super::config::FileSearchConfig;
+use super::super::super::config::SearchBy;
+use super::super::should_be_filtered_out;
+use crate::common::document::{DataSourceReference, Document};
+use crate::extension::LOCAL_QUERY_SOURCE_TYPE;
+use crate::extension::OnOpened;
+use crate::util::file::sync_get_file_icon;
+use camino::Utf8Path;
+use configparser::ini::Ini;
+use configparser::ini::WriteOptions;
+use futures::stream::Stream;
+use futures::stream::StreamExt;
+use std::os::fd::OwnedFd;
+use std::path::PathBuf;
+use tokio::io::AsyncBufReadExt;
+use tokio::io::BufReader;
+use tokio::process::Child;
+use tokio::process::Command;
+use tokio_stream::wrappers::LinesStream;
+
+/// Baloo does not support scoring, use this score for all the documents.
+const SCORE: f64 = 1.0;
+
+/// KDE6 updates the binary name to "baloosearch6", but I believe there still have
+/// distros using the original name.  So we need to check both.
+fn cli_tool_lookup() -> Option<PathBuf> {
+    use which::which;
+
+    let res_path = which("baloosearch").or_else(|_| which("baloosearch6"));
+    res_path.ok()
+}
+
+pub(crate) async fn hits(
+    query_string: &str,
+    _from: usize,
+    size: usize,
+    config: &FileSearchConfig,
+) -> Result<Vec<(Document, f64)>, String> {
+    // Special cases that will make querying faster.
+    if query_string.is_empty() || size == 0 || config.search_paths.is_empty() {
+        return Ok(Vec::new());
+    }
+
+    // If the tool is not found, return an empty result as well.
+    let Some(tool_path) = cli_tool_lookup() else {
+        return Ok(Vec::new());
+    };
+
+    let (mut iter, _baloosearch_child_process) =
+        execute_baloosearch_query(tool_path, query_string, size, config)?;
+
+    // Convert results to documents
+    let mut hits: Vec<(Document, f64)> = Vec::new();
+    while let Some(res_file_path) = iter.next().await {
+        let file_path = res_file_path.map_err(|io_err| io_err.to_string())?;
+
+        let icon = sync_get_file_icon(&file_path);
+        let file_path_of_type_path = camino::Utf8Path::new(&file_path);
+        let r#where = file_path_of_type_path
+            .parent()
+            .unwrap_or_else(|| {
+                panic!(
+                    "expect path [{}] to have a parent, but it does not",
+                    file_path
+                );
+            })
+            .to_string();
+
+        let file_name = file_path_of_type_path.file_name().unwrap_or_else(|| {
+            panic!(
+                "expect path [{}] to have a file name, but it does not",
+                file_path
+            );
+        });
+        let on_opened = OnOpened::Document {
+            url: file_path.clone(),
+        };
+
+        let doc = Document {
+            id: file_path.clone(),
+            title: Some(file_name.to_string()),
+            source: Some(DataSourceReference {
+                r#type: Some(LOCAL_QUERY_SOURCE_TYPE.into()),
+                name: Some(EXTENSION_ID.into()),
+                id: Some(EXTENSION_ID.into()),
+                icon: Some(String::from("font_Filesearch")),
+            }),
+            category: Some(r#where),
+            on_opened: Some(on_opened),
+            url: Some(file_path),
+            icon: Some(icon.to_string()),
+            ..Default::default()
+        };
+
+        hits.push((doc, SCORE));
+    }
+
+    Ok(hits)
+}
+
+/// Return an array containing the `baloosearch` command and its arguments.
+fn build_baloosearch_query(
+    tool_path: PathBuf,
+    query_string: &str,
+    config: &FileSearchConfig,
+) -> Vec<String> {
+    let tool_path = tool_path
+        .into_os_string()
+        .into_string()
+        .expect("binary path should be UTF-8 encoded");
+
+    let mut args = vec![tool_path];
+
+    match config.search_by {
+        SearchBy::Name => {
+            args.push(format!("filename:{query_string}"));
+        }
+        SearchBy::NameAndContents => {
+            args.push(query_string.to_string());
+        }
+    }
+
+    for search_path in config.search_paths.iter() {
+        args.extend_from_slice(&["-d".into(), search_path.clone()]);
+    }
+
+    args
+}
+
+/// Spawn the `baloosearch` child process and return an async iterator over its output,
+/// allowing us to collect the results asynchronously.
+///
+/// # Return value:
+///
+/// * impl Stream: an async iterator that will yield the matched files
+/// * Child: The handle to the baloosearch process.  The child process will be
+///   killed when this handle gets dropped so we need to keep it alive util we
+///   exhaust the stream.
+fn execute_baloosearch_query(
+    tool_path: PathBuf,
+    query_string: &str,
+    size: usize,
+    config: &FileSearchConfig,
+) -> Result<(impl Stream<Item = std::io::Result<String>>, Child), String> {
+    let args = build_baloosearch_query(tool_path, query_string, config);
+
+    let (rx, tx) = std::io::pipe().unwrap();
+    let rx_owned = OwnedFd::from(rx);
+    let async_rx = tokio::net::unix::pipe::Receiver::from_owned_fd(rx_owned).unwrap();
+    let buffered_rx = BufReader::new(async_rx);
+    let lines = LinesStream::new(buffered_rx.lines());
+
+    let child = Command::new(&args[0])
+        .args(&args[1..])
+        .stdout(tx)
+        .stderr(std::process::Stdio::null())
+        // The child process will be killed when the Child instance gets dropped.
+        .kill_on_drop(true)
+        .spawn()
+        .map_err(|e| format!("Failed to spawn baloosearch: {e}"))?;
+    let config_clone = config.clone();
+    let iter = lines
+        .filter(move |res_path| {
+            std::future::ready({
+                match res_path {
+                    Ok(path) => !should_be_filtered_out(&config_clone, path, false, true, true),
+                    Err(_) => {
+                        // Don't filter out Err() values
+                        true
+                    }
+                }
+            })
+        })
+        .take(size);
+
+    Ok((iter, child))
+}
+
+pub(crate) fn apply_config(config: &FileSearchConfig) -> Result<(), String> {
+    // Users can tweak Baloo via its configuration file, below are the fields that
+    // we need to modify:
+    //
+    // * Indexing-Enabled: turn indexing on or off
+    // * only basic indexing: If true, Baloo only indexes file names
+    // * folders: directories to index
+    // * exclude folders: directories to skip
+    //
+    // ```ini
+    // [Basic Settings]
+    // Indexing-Enabled=true
+    //
+    // [General]
+    // only basic indexing=true
+    // folders[$e]=$HOME/
+    // exclude folders[$e]=$HOME/FolderA/,$HOME/FolderB/
+    // ```
+
+    const SECTION_GENERAL: &str = "General";
+    const KEY_INCLUDE_FOLDERS: &str = "folders[$e]";
+    const KEY_EXCLUDE_FOLDERS: &str = "exclude folders[$e]";
+    const FOLDERS_SEPARATOR: &str = ",";
+
+    let rc_file_path = {
+        let mut home = dirs::home_dir()
+            .expect("cannot find the home directory, Coco should never run in such a environment");
+        home.push(".config/baloofilerc");
+        home
+    };
+
+    // Parse and load the rc file, it is in format INI
+    //
+    // Use `new_cs()`, the case-sensitive version of constructor as the config
+    // file contains uppercase letters, so it is case-sensitive.
+    let mut baloo_config = Ini::new_cs();
+    if rc_file_path.try_exists().map_err(|e| e.to_string())? {
+        let _ = baloo_config.load(rc_file_path.as_path())?;
+    }
+
+    // Ensure indexing is enabled
+    let _ = baloo_config.setstr("Basic Settings", "Indexing-Enabled", Some("true"));
+
+    // Let baloo index file content if we need that
+    if config.search_by == SearchBy::NameAndContents {
+        let _ = baloo_config.setstr(SECTION_GENERAL, "only basic indexing", Some("false"));
+    }
+
+    let mut include_folders = {
+        match baloo_config.get(SECTION_GENERAL, KEY_INCLUDE_FOLDERS) {
+            Some(str) => str
+                .split(FOLDERS_SEPARATOR)
+                .map(|str| str.to_string())
+                .collect::<Vec<String>>(),
+            None => Vec::new(),
+        }
+    };
+
+    let mut exclude_folders = {
+        match baloo_config.get(SECTION_GENERAL, KEY_EXCLUDE_FOLDERS) {
+            Some(str) => str
+                .split(FOLDERS_SEPARATOR)
+                .map(|str| str.to_string())
+                .collect::<Vec<String>>(),
+            None => Vec::new(),
+        }
+    };
+
+    fn ensure_path_included_include_folders(
+        include_folders: &mut Vec<String>,
+        search_path: &Utf8Path,
+    ) {
+        for include_folder in include_folders.iter() {
+            let include_folder = Utf8Path::new(include_folder.as_str());
+            if search_path.starts_with(include_folder) {
+                return;
+            }
+        }
+
+        include_folders.push(search_path.as_str().to_string());
+    }
+
+    fn ensure_path_and_descendants_not_excluded(
+        exclude_folders: &mut Vec<String>,
+        search_path: &Utf8Path,
+    ) {
+        let mut items_to_remove = Vec::new();
+        for (idx, exclude_folder) in exclude_folders.iter().enumerate() {
+            let exclude_folder = Utf8Path::new(exclude_folder);
+
+            if exclude_folder.starts_with(search_path) {
+                items_to_remove.push(idx);
+            }
+        }
+
+        for idx in items_to_remove.into_iter().rev() {
+            exclude_folders.remove(idx);
+        }
+    }
+
+    for search_path in config.search_paths.iter() {
+        let search_path = Utf8Path::new(search_path.as_str());
+
+        ensure_path_included_include_folders(&mut include_folders, search_path);
+        ensure_path_and_descendants_not_excluded(&mut exclude_folders, search_path);
+    }
+
+    let include_folders_str: String = include_folders.as_slice().join(FOLDERS_SEPARATOR);
+    let exclude_folders_str: String = exclude_folders.as_slice().join(FOLDERS_SEPARATOR);
+
+    let _ = baloo_config.set(
+        SECTION_GENERAL,
+        KEY_INCLUDE_FOLDERS,
+        Some(include_folders_str),
+    );
+    let _ = baloo_config.set(
+        SECTION_GENERAL,
+        KEY_EXCLUDE_FOLDERS,
+        Some(exclude_folders_str),
+    );
+
+    baloo_config
+        .pretty_write(rc_file_path.as_path(), &WriteOptions::new())
+        .map_err(|e| e.to_string())?;
+
+    Ok(())
+}

src-tauri/src/extension/built_in/file_search/implementation/linux/mod.rs

@@ -0,0 +1,50 @@
+mod gnome;
+mod kde;
+
+use super::super::config::FileSearchConfig;
+use crate::common::document::Document;
+use crate::util::LinuxDesktopEnvironment;
+use crate::util::get_linux_desktop_environment;
+use std::ops::Deref;
+use std::sync::LazyLock;
+
+static DESKTOP_ENVIRONMENT: LazyLock<Option<LinuxDesktopEnvironment>> =
+    LazyLock::new(|| get_linux_desktop_environment());
+
+/// Dispatch to implementations powered by different backends.
+pub(crate) async fn hits(
+    query_string: &str,
+    from: usize,
+    size: usize,
+    config: &FileSearchConfig,
+) -> Result<Vec<(Document, f64)>, String> {
+    let de = DESKTOP_ENVIRONMENT.deref();
+    match de {
+        Some(LinuxDesktopEnvironment::Gnome) => gnome::hits(query_string, from, size, config).await,
+        Some(LinuxDesktopEnvironment::Kde) => kde::hits(query_string, from, size, config).await,
+        Some(LinuxDesktopEnvironment::Unsupported {
+            xdg_current_desktop: _,
+        }) => {
+            return Err("file search is not supported on this desktop environment".into());
+        }
+        None => {
+            return Err("could not determine Linux desktop environment".into());
+        }
+    }
+}
+
+pub(crate) fn apply_config(config: &FileSearchConfig) -> Result<(), String> {
+    let de = DESKTOP_ENVIRONMENT.deref();
+    match de {
+        Some(LinuxDesktopEnvironment::Gnome) => gnome::apply_config(config),
+        Some(LinuxDesktopEnvironment::Kde) => kde::apply_config(config),
+        Some(LinuxDesktopEnvironment::Unsupported {
+            xdg_current_desktop: _,
+        }) => {
+            return Err("file search is not supported on this desktop environment".into());
+        }
+        None => {
+            return Err("could not determine Linux desktop environment".into());
+        }
+    }
+}

src-tauri/src/extension/built_in/file_search/implementation/macos.rs

@@ -0,0 +1,190 @@
+use super::super::EXTENSION_ID;
+use super::super::config::FileSearchConfig;
+use super::super::config::SearchBy;
+use super::should_be_filtered_out;
+use crate::common::document::{DataSourceReference, Document};
+use crate::extension::LOCAL_QUERY_SOURCE_TYPE;
+use crate::extension::OnOpened;
+use crate::util::file::sync_get_file_icon;
+use futures::stream::Stream;
+use futures::stream::StreamExt;
+use std::os::fd::OwnedFd;
+use std::path::Path;
+use tokio::io::AsyncBufReadExt;
+use tokio::io::BufReader;
+use tokio::process::Child;
+use tokio::process::Command;
+use tokio_stream::wrappers::LinesStream;
+
+/// `mdfind` won't return scores, we use this score for all the documents.
+const SCORE: f64 = 1.0;
+
+pub(crate) async fn hits(
+    query_string: &str,
+    from: usize,
+    size: usize,
+    config: &FileSearchConfig,
+) -> Result<Vec<(Document, f64)>, String> {
+    let (mut iter, _mdfind_child_process) =
+        execute_mdfind_query(&query_string, from, size, &config)?;
+
+    // Convert results to documents
+    let mut hits: Vec<(Document, f64)> = Vec::new();
+    while let Some(res_file_path) = iter.next().await {
+        let file_path = res_file_path.map_err(|io_err| io_err.to_string())?;
+
+        let icon = sync_get_file_icon(&file_path);
+        let file_path_of_type_path = camino::Utf8Path::new(&file_path);
+        let r#where = file_path_of_type_path
+            .parent()
+            .unwrap_or_else(|| {
+                panic!(
+                    "expect path [{}] to have a parent, but it does not",
+                    file_path
+                );
+            })
+            .to_string();
+
+        let file_name = file_path_of_type_path.file_name().unwrap_or_else(|| {
+            panic!(
+                "expect path [{}] to have a file name, but it does not",
+                file_path
+            );
+        });
+        let on_opened = OnOpened::Document {
+            url: file_path.clone(),
+        };
+
+        let doc = Document {
+            id: file_path.clone(),
+            title: Some(file_name.to_string()),
+            source: Some(DataSourceReference {
+                r#type: Some(LOCAL_QUERY_SOURCE_TYPE.into()),
+                name: Some(EXTENSION_ID.into()),
+                id: Some(EXTENSION_ID.into()),
+                icon: Some(String::from("font_Filesearch")),
+            }),
+            category: Some(r#where),
+            on_opened: Some(on_opened),
+            url: Some(file_path),
+            icon: Some(icon.to_string()),
+            ..Default::default()
+        };
+
+        hits.push((doc, SCORE));
+    }
+
+    Ok(hits)
+}
+
+/// Return an array containing the `mdfind` command and its arguments.
+fn build_mdfind_query(query_string: &str, config: &FileSearchConfig) -> Vec<String> {
+    let mut args = vec!["mdfind".to_string()];
+
+    match config.search_by {
+        SearchBy::Name => {
+            // The tailing char 'c' makes the search case-insensitive.
+            //
+            // According to [1], we should use this syntax "kMDItemFSName ==[c] '*{}*'",
+            // but it does not work on my machine (macOS 26 beta 7), and you
+            // can find similar complaints as well [2].
+            //
+            // [1]: https://developer.apple.com/library/archive/documentation/Carbon/Conceptual/SpotlightQuery/Concepts/QueryFormat.html
+            // [2]: https://apple.stackexchange.com/q/263671/394687
+            args.push(format!("kMDItemFSName == '*{}*'c", query_string));
+        }
+        SearchBy::NameAndContents => {
+            // Do not specify any File System Metadata Attribute Keys to search
+            // all of them, it is case-insensitive by default.
+            //
+            // Previously, we use:
+            //
+            //    "kMDItemFSName == '*{}*' || kMDItemTextContent == '{}'"
+            //
+            // But the kMDItemTextContent attribute does not work as expected.
+            // For example, if a PDF document contains both "Waterloo" and
+            // "waterloo", it is only matched by "Waterloo".
+            args.push(query_string.to_string());
+        }
+    }
+
+    // Add search paths using -onlyin
+    for path in &config.search_paths {
+        if Path::new(path).exists() {
+            args.extend_from_slice(&["-onlyin".to_string(), path.to_string()]);
+        }
+    }
+
+    args
+}
+
+/// Spawn the `mdfind` child process and return an async iterator over its output,
+/// allowing us to collect the results asynchronously.
+///
+/// # Return value:
+///
+/// * impl Stream: an async iterator that will yield the matched files
+/// * Child: The handle to the mdfind process.  The child process will be killed
+///   when this handle gets dropped, we need to keep it alive until we exhaust
+///   all the query results.
+fn execute_mdfind_query(
+    query_string: &str,
+    from: usize,
+    size: usize,
+    config: &FileSearchConfig,
+) -> Result<(impl Stream<Item = std::io::Result<String>>, Child), String> {
+    let args = build_mdfind_query(query_string, &config);
+    let (rx, tx) = std::io::pipe().unwrap();
+    let rx_owned = OwnedFd::from(rx);
+    let async_rx = tokio::net::unix::pipe::Receiver::from_owned_fd(rx_owned).unwrap();
+    let buffered_rx = BufReader::new(async_rx);
+    let lines = LinesStream::new(buffered_rx.lines());
+
+    let child = Command::new(&args[0])
+        .args(&args[1..])
+        .stdout(tx)
+        .stderr(std::process::Stdio::null())
+        .kill_on_drop(true)
+        .spawn()
+        .map_err(|e| format!("Failed to spawn mdfind: {}", e))?;
+    let config_clone = config.clone();
+    let iter = lines
+        .filter(move |res_path| {
+            std::future::ready({
+                match res_path {
+                    Ok(path) => !should_be_filtered_out(&config_clone, path, false, true, true),
+                    Err(_) => {
+                        // Don't filter out Err() values
+                        true
+                    }
+                }
+            })
+        })
+        .skip(from)
+        .take(size);
+
+    Ok((iter, child))
+}
+
+pub(crate) fn apply_config(_: &FileSearchConfig) -> Result<(), String> {
+    // By default, macOS indexes all the files within a volume if indexing is
+    // enabled. So, to ensure our search paths are indexed by Spotlight,
+    // theoretically, we can do the following things:
+    //
+    // 1. Ensure indexing is enabled on the volumes where our search paths reside.
+    //    However, we cannot do this as doing so requires `sudo`.
+    //
+    // 2. Ensure the search paths are not excluded from indexing scope. Users can
+    //    stop Spotlight from indexing a directory by:
+    //    1. adding it to the "Privacy" list in 'System Settings'. Coco cannot
+    //       modify this list, since the only way to change it is manually
+    //       through System Settings.
+    //    2. Renaming directory name, adding a `.noindex` file extension to it.
+    //       I don't want to use this trick, users won't feel comfortable and it
+    //       could break at any time.
+    //    3. Creating a `.metadata_never_index` file within the directory (no longer works
+    //       since macOS Mojave)
+    //
+    // There is nothing we can do.
+    Ok(())
+}

src-tauri/src/extension/built_in/file_search/implementation/mod.rs

@@ -0,0 +1,396 @@
+use cfg_if::cfg_if;
+
+// * hits: the implementation of search
+//
+// * apply_config: Routines that should be performed to keep "other things"
+//   synchronous with the passed configuration.
+//   Currently, "other things" only include system indexer's setting entries.
+cfg_if! {
+    if #[cfg(target_os = "linux")] {
+        mod linux;
+        pub(crate) use linux::hits;
+        pub(crate) use linux::apply_config;
+    } else if #[cfg(target_os = "macos")] {
+        mod macos;
+        pub(crate) use macos::hits;
+        pub(crate) use macos::apply_config;
+    } else if #[cfg(target_os = "windows")] {
+        mod windows;
+        pub(crate) use windows::hits;
+        pub(crate) use windows::apply_config;
+    }
+}
+
+cfg_if! {
+    if #[cfg(not(target_os = "windows"))] {
+        use super::config::FileSearchConfig;
+        use camino::Utf8Path;
+    }
+}
+
+/// If `file_path` should be removed from the search results given the filter
+/// conditions specified in `config`.
+#[cfg(not(target_os = "windows"))] // Not used on Windows
+pub(crate) fn should_be_filtered_out(
+    config: &FileSearchConfig,
+    file_path: &str,
+    check_search_paths: bool,
+    check_exclude_paths: bool,
+    check_file_type: bool,
+) -> bool {
+    let file_path = Utf8Path::new(file_path);
+
+    if check_search_paths {
+        // search path
+        let in_search_paths = config.search_paths.iter().any(|search_path| {
+            let search_path = Utf8Path::new(search_path);
+            file_path.starts_with(search_path)
+        });
+        if !in_search_paths {
+            return true;
+        }
+    }
+
+    if check_exclude_paths {
+        // exclude path
+        let is_excluded = config
+            .exclude_paths
+            .iter()
+            .any(|exclude_path| file_path.starts_with(exclude_path));
+        if is_excluded {
+            return true;
+        }
+    }
+
+    if check_file_type {
+        // file type
+        let matches_file_type = if config.file_types.is_empty() {
+            true
+        } else {
+            let path_obj = camino::Utf8Path::new(&file_path);
+            if let Some(extension) = path_obj.extension() {
+                config
+                    .file_types
+                    .iter()
+                    .any(|file_type| file_type == extension)
+            } else {
+                // `config.file_types` is not empty, the hit files should have extensions.
+                false
+            }
+        };
+
+        if !matches_file_type {
+            return true;
+        }
+    }
+
+    false
+}
+
+// should_be_filtered_out() is not defined for Windows
+#[cfg(all(test, not(target_os = "windows")))]
+mod tests {
+    use super::super::config::SearchBy;
+    use super::*;
+
+    #[test]
+    fn test_should_be_filtered_out_with_no_check() {
+        let config = FileSearchConfig {
+            search_paths: vec!["/home/user/Documents".to_string()],
+            exclude_paths: vec![],
+            file_types: vec!["fffffff".into()],
+            search_by: SearchBy::Name,
+        };
+
+        assert!(!should_be_filtered_out(
+            &config, "abbc", false, false, false
+        ));
+    }
+
+    #[test]
+    fn test_should_be_filtered_out_search_paths() {
+        let config = FileSearchConfig {
+            search_paths: vec![
+                "/home/user/Documents".to_string(),
+                "/home/user/Downloads".to_string(),
+            ],
+            exclude_paths: vec![],
+            file_types: vec![],
+            search_by: SearchBy::Name,
+        };
+
+        // Files in search paths should not be filtered
+        assert!(!should_be_filtered_out(
+            &config,
+            "/home/user/Documents/file.txt",
+            true,
+            true,
+            true
+        ));
+        assert!(!should_be_filtered_out(
+            &config,
+            "/home/user/Downloads/image.jpg",
+            true,
+            true,
+            true
+        ));
+        assert!(!should_be_filtered_out(
+            &config,
+            "/home/user/Documents/folder/file.txt",
+            true,
+            true,
+            true
+        ));
+
+        // Files not in search paths should be filtered
+        assert!(should_be_filtered_out(
+            &config,
+            "/home/user/Pictures/photo.jpg",
+            true,
+            true,
+            true
+        ));
+        assert!(should_be_filtered_out(
+            &config,
+            "/tmp/tempfile",
+            true,
+            true,
+            true
+        ));
+        assert!(should_be_filtered_out(
+            &config,
+            "/usr/bin/ls",
+            true,
+            true,
+            true
+        ));
+    }
+
+    #[test]
+    fn test_should_be_filtered_out_exclude_paths() {
+        let config = FileSearchConfig {
+            search_paths: vec!["/home/user".to_string()],
+            exclude_paths: vec![
+                "/home/user/Trash".to_string(),
+                "/home/user/.cache".to_string(),
+            ],
+            file_types: vec![],
+            search_by: SearchBy::Name,
+        };
+
+        // Files in search paths but not excluded should not be filtered
+        assert!(!should_be_filtered_out(
+            &config,
+            "/home/user/Documents/file.txt",
+            true,
+            true,
+            true
+        ));
+        assert!(!should_be_filtered_out(
+            &config,
+            "/home/user/Downloads/image.jpg",
+            true,
+            true,
+            true
+        ));
+
+        // Files in excluded paths should be filtered
+        assert!(should_be_filtered_out(
+            &config,
+            "/home/user/Trash/deleted_file",
+            true,
+            true,
+            true
+        ));
+        assert!(should_be_filtered_out(
+            &config,
+            "/home/user/.cache/temp",
+            true,
+            true,
+            true
+        ));
+        assert!(should_be_filtered_out(
+            &config,
+            "/home/user/Trash/folder/file.txt",
+            true,
+            true,
+            true
+        ));
+    }
+
+    #[test]
+    fn test_should_be_filtered_out_file_types() {
+        let config = FileSearchConfig {
+            search_paths: vec!["/home/user/Documents".to_string()],
+            exclude_paths: vec![],
+            file_types: vec!["txt".to_string(), "md".to_string()],
+            search_by: SearchBy::Name,
+        };
+
+        // Files with allowed extensions should not be filtered
+        assert!(!should_be_filtered_out(
+            &config,
+            "/home/user/Documents/notes.txt",
+            true,
+            true,
+            true
+        ));
+        assert!(!should_be_filtered_out(
+            &config,
+            "/home/user/Documents/readme.md",
+            true,
+            true,
+            true
+        ));
+
+        // Files with disallowed extensions should be filtered
+        assert!(should_be_filtered_out(
+            &config,
+            "/home/user/Documents/image.jpg",
+            true,
+            true,
+            true
+        ));
+        assert!(should_be_filtered_out(
+            &config,
+            "/home/user/Documents/document.pdf",
+            true,
+            true,
+            true
+        ));
+
+        // Files without extensions should be filtered when file_types is not empty
+        assert!(should_be_filtered_out(
+            &config,
+            "/home/user/Documents/file",
+            true,
+            true,
+            true
+        ));
+        assert!(should_be_filtered_out(
+            &config,
+            "/home/user/Documents/folder",
+            true,
+            true,
+            true
+        ));
+    }
+
+    #[test]
+    fn test_should_be_filtered_out_empty_file_types() {
+        let config = FileSearchConfig {
+            search_paths: vec!["/home/user/Documents".to_string()],
+            exclude_paths: vec![],
+            file_types: vec![],
+            search_by: SearchBy::Name,
+        };
+
+        // When file_types is empty, all file types should be allowed
+        assert!(!should_be_filtered_out(
+            &config,
+            "/home/user/Documents/file.txt",
+            true,
+            true,
+            true
+        ));
+        assert!(!should_be_filtered_out(
+            &config,
+            "/home/user/Documents/image.jpg",
+            true,
+            true,
+            true
+        ));
+        assert!(!should_be_filtered_out(
+            &config,
+            "/home/user/Documents/document",
+            true,
+            true,
+            true
+        ));
+        assert!(!should_be_filtered_out(
+            &config,
+            "/home/user/Documents/folder/",
+            true,
+            true,
+            true
+        ));
+    }
+
+    #[test]
+    fn test_should_be_filtered_out_combined_filters() {
+        let config = FileSearchConfig {
+            search_paths: vec!["/home/user".to_string()],
+            exclude_paths: vec!["/home/user/Trash".to_string()],
+            file_types: vec!["txt".to_string()],
+            search_by: SearchBy::Name,
+        };
+
+        // Should pass all filters: in search path, not excluded, and correct file type
+        assert!(!should_be_filtered_out(
+            &config,
+            "/home/user/Documents/notes.txt",
+            true,
+            true,
+            true
+        ));
+
+        // Fails file type filter
+        assert!(should_be_filtered_out(
+            &config,
+            "/home/user/Documents/image.jpg",
+            true,
+            true,
+            true
+        ));
+
+        // Fails exclude path filter
+        assert!(should_be_filtered_out(
+            &config,
+            "/home/user/Trash/deleted.txt",
+            true,
+            true,
+            true
+        ));
+
+        // Fails search path filter
+        assert!(should_be_filtered_out(
+            &config,
+            "/tmp/temp.txt",
+            true,
+            true,
+            true
+        ));
+    }
+
+    #[test]
+    fn test_should_be_filtered_out_edge_cases() {
+        let config = FileSearchConfig {
+            search_paths: vec!["/home/user".to_string()],
+            exclude_paths: vec![],
+            file_types: vec!["txt".to_string()],
+            search_by: SearchBy::Name,
+        };
+
+        // Empty path
+        assert!(should_be_filtered_out(&config, "", true, true, true));
+
+        // Root path
+        assert!(should_be_filtered_out(&config, "/", true, true, true));
+
+        // Path that starts with search path but continues differently
+        assert!(!should_be_filtered_out(
+            &config,
+            "/home/user/document.txt",
+            true,
+            true,
+            true
+        ));
+        assert!(should_be_filtered_out(
+            &config,
+            "/home/user_other/file.txt",
+            true,
+            true,
+            true
+        ));
+    }
+}

src-tauri/src/extension/built_in/file_search/implementation/windows/crawl_scope_manager/mod.rs

@@ -0,0 +1,234 @@
+//! Wraps Windows `ISearchCrawlScopeManager`
+
+mod searchapi_h_bindings;
+
+use searchapi_h_bindings::CLSID_CSEARCH_MANAGER;
+use searchapi_h_bindings::IID_ISEARCH_MANAGER;
+use searchapi_h_bindings::{
+    HRESULT, ISearchCatalogManager, ISearchCatalogManagerVtbl, ISearchCrawlScopeManager,
+    ISearchCrawlScopeManagerVtbl, ISearchManager,
+};
+use std::ffi::OsStr;
+use std::ffi::OsString;
+use std::os::windows::ffi::OsStrExt;
+use std::path::Path;
+use std::path::PathBuf;
+use std::ptr::null_mut;
+use windows::core::w;
+use windows_sys::Win32::Foundation::S_OK;
+use windows_sys::Win32::System::Com::{
+    CLSCTX_LOCAL_SERVER, COINIT_APARTMENTTHREADED, CoCreateInstance, CoInitializeEx, CoUninitialize,
+};
+
+#[derive(Debug, thiserror::Error)]
+#[error("{msg}, function [{function}], HRESULT [{hresult}]")]
+pub(crate) struct WindowSearchApiError {
+    function: &'static str,
+    hresult: HRESULT,
+    msg: String,
+}
+
+/// See doc of [`Rule`].
+#[derive(Debug, PartialEq)]
+pub(crate) enum RuleMode {
+    Inclusion,
+    Exclusion,
+}
+
+/// A rule adds or removes one or more paths to/from the Windows Search index.
+#[derive(Debug)]
+pub(crate) struct Rule {
+    /// A path or path pattern (wildcard supported, only for exclusion rule) that
+    /// specifies the paths that this rule applies to.
+    ///
+    /// The rules used by Windows Search actually specify URLs rather than paths,
+    /// but we only care about paths, i.e., URLs with schema `file://`
+    pub(crate) paths: PathBuf,
+    /// Add or remove paths to/from the index.
+    pub(crate) mode: RuleMode,
+}
+
+/// A wrapper around Window's `ISearchCrawlScopeManager` type
+pub(crate) struct CrawlScopeManager {
+    i_search_crawl_scope_manager: *mut ISearchCrawlScopeManager,
+}
+
+impl CrawlScopeManager {
+    fn vtable(&self) -> *mut ISearchCrawlScopeManagerVtbl {
+        unsafe { (*self.i_search_crawl_scope_manager).lpVtbl }
+    }
+
+    pub(crate) fn new() -> Result<Self, WindowSearchApiError> {
+        unsafe {
+            // 1. Initialize the COM library, use Apartment-threading as Self is not Send/Sync
+            let hr = CoInitializeEx(null_mut(), COINIT_APARTMENTTHREADED as u32);
+            if hr != S_OK {
+                return Err(WindowSearchApiError {
+                    function: "CoInitializeEx()",
+                    hresult: hr,
+                    msg: "failed to initialize the COM library".into(),
+                });
+            }
+
+            // 2. Create an instance of the CSearchManager.
+            let mut search_manager: *mut ISearchManager = null_mut();
+            let hr = CoCreateInstance(
+                &CLSID_CSEARCH_MANAGER,                  // CLSID of the object
+                null_mut(),                              // No outer unknown
+                CLSCTX_LOCAL_SERVER,                     // Server context
+                &IID_ISEARCH_MANAGER,                    // IID of the interface we want
+                &mut search_manager as *mut _ as *mut _, // Pointer to receive the interface
+            );
+            if hr != S_OK {
+                return Err(WindowSearchApiError {
+                    function: "CoCreateInstance()",
+                    hresult: hr,
+                    msg: "failed to initialize ISearchManager".into(),
+                });
+            }
+            assert!(!search_manager.is_null());
+
+            let search_manger_vtable = (*search_manager).lpVtbl;
+            let search_manager_fn_get_catalog = (*search_manger_vtable).GetCatalog.unwrap();
+            let mut search_catalog_manager: *mut ISearchCatalogManager = null_mut();
+            let string_literal_system_index = w!("SystemIndex");
+            let hr: HRESULT = search_manager_fn_get_catalog(
+                search_manager,
+                string_literal_system_index.0,
+                &mut search_catalog_manager as *mut *mut ISearchCatalogManager,
+            );
+            if hr != S_OK {
+                return Err(WindowSearchApiError {
+                    function: "ISearchManager::GetCatalog()",
+                    hresult: hr,
+                    msg: "failed to initialize ISearchCatalogManager".into(),
+                });
+            }
+            assert!(!search_catalog_manager.is_null());
+
+            let search_catalog_manager_vtable: *mut ISearchCatalogManagerVtbl =
+                (*search_catalog_manager).lpVtbl;
+            let fn_get_crawl_scope_manager = (*search_catalog_manager_vtable)
+                .GetCrawlScopeManager
+                .unwrap();
+            let mut search_crawl_scope_manager: *mut ISearchCrawlScopeManager = null_mut();
+            let hr =
+                fn_get_crawl_scope_manager(search_catalog_manager, &mut search_crawl_scope_manager);
+            if hr != S_OK {
+                return Err(WindowSearchApiError {
+                    function: "ISearchCatalogManager::GetCrawlScopeManager()",
+                    hresult: hr,
+                    msg: "failed to initialize ISearchCrawlScopeManager".into(),
+                });
+            }
+            assert!(!search_crawl_scope_manager.is_null());
+
+            Ok(Self {
+                i_search_crawl_scope_manager: search_crawl_scope_manager,
+            })
+        }
+    }
+
+    /// Does nothing unless you [`commit()`] the changes.
+    pub(crate) fn add_rule(&mut self, rule: Rule) -> Result<(), WindowSearchApiError> {
+        unsafe {
+            let vtable = self.vtable();
+
+            let fn_add_rule = (*vtable).AddUserScopeRule.unwrap();
+
+            let url: Vec<u16> = encode_path(&rule.paths);
+            let inclusion = (rule.mode == RuleMode::Inclusion) as i32;
+            let override_child_rules = true as i32;
+            let follow_flag = 0x1_u32; /* FF_INDEXCOMPLEXURLS */
+
+            let hr = fn_add_rule(
+                self.i_search_crawl_scope_manager,
+                url.as_ptr(),
+                inclusion,
+                override_child_rules,
+                follow_flag,
+            );
+
+            if hr != S_OK {
+                return Err(WindowSearchApiError {
+                    function: "ISearchCrawlScopeManager::AddUserScopeRule()",
+                    hresult: hr,
+                    msg: "failed to add scope rule".into(),
+                });
+            }
+
+            Ok(())
+        }
+    }
+
+    pub(crate) fn is_path_included<P: AsRef<Path> + ?Sized>(
+        &self,
+        path: &P,
+    ) -> Result<bool, WindowSearchApiError> {
+        unsafe {
+            let vtable = self.vtable();
+            let fn_included_in_crawl_scope = (*vtable).IncludedInCrawlScope.unwrap();
+            let path: Vec<u16> = encode_path(path);
+
+            let mut included: i32 = 0 /* false */;
+
+            let hr = fn_included_in_crawl_scope(
+                self.i_search_crawl_scope_manager,
+                path.as_ptr(),
+                &mut included,
+            );
+            if hr != S_OK {
+                return Err(WindowSearchApiError {
+                    function: "ISearchCrawlScopeManager::IncludedInCrawlScope()",
+                    hresult: hr,
+                    msg: "failed to call IncludedInCrawlScope()".into(),
+                });
+            }
+
+            Ok(included == 1)
+        }
+    }
+
+    pub(crate) fn commit(&self) -> Result<(), WindowSearchApiError> {
+        unsafe {
+            let vtable = self.vtable();
+            let fn_commit = (*vtable).SaveAll.unwrap();
+            let hr = fn_commit(self.i_search_crawl_scope_manager);
+            if hr != S_OK {
+                return Err(WindowSearchApiError {
+                    function: "ISearchCrawlScopeManager::SaveAll()",
+                    hresult: hr,
+                    msg: "failed to commit the changes".into(),
+                });
+            }
+
+            Ok(())
+        }
+    }
+}
+
+impl Drop for CrawlScopeManager {
+    fn drop(&mut self) {
+        unsafe {
+            CoUninitialize();
+        }
+    }
+}
+
+fn encode_path<P: AsRef<Path> + ?Sized>(path: &P) -> Vec<u16> {
+    let mut buffer = OsString::new();
+
+    // schema
+    buffer.push("file:///");
+    buffer.push(path.as_ref().as_os_str());
+
+    osstr_to_wstr(&buffer)
+}
+
+fn osstr_to_wstr<S: AsRef<OsStr> + ?Sized>(str: &S) -> Vec<u16> {
+    let os_str: &OsStr = str.as_ref();
+    let mut chars = os_str.encode_wide().collect::<Vec<u16>>();
+    chars.push(0 /* NUL */);
+
+    chars
+}

src-tauri/src/extension/built_in/file_search/implementation/windows/crawl_scope_manager/searchapi_h_bindings.rs

@@ -0,0 +1,30 @@
+//! Rust binding of the types and functions declared in 'searchapi.h'
+
+#![allow(unused)]
+#![allow(non_camel_case_types)]
+#![allow(non_snake_case)]
+#![allow(non_upper_case_globals)]
+#![allow(unsafe_op_in_unsafe_fn)]
+#![allow(unnecessary_transmutes)]
+
+include!(concat!(env!("OUT_DIR"), "/searchapi_bindings.rs"));
+
+// The bindings.rs contains a GUID type as well, we use the one provided by
+// the windows_sys crate here.
+use windows_sys::core::GUID as WIN_SYS_GUID;
+
+// https://github.com/search?q=CLSID_CSearchManager+language%3AC&type=code&l=C
+pub(crate) static CLSID_CSEARCH_MANAGER: WIN_SYS_GUID = WIN_SYS_GUID {
+    data1: 0x7d096c5f,
+    data2: 0xac08,
+    data3: 0x4f1f,
+    data4: [0xbe, 0xb7, 0x5c, 0x22, 0xc5, 0x17, 0xce, 0x39],
+};
+
+// https://github.com/search?q=IID_ISearchManager+language%3AC&type=code
+pub(crate) static IID_ISEARCH_MANAGER: WIN_SYS_GUID = WIN_SYS_GUID {
+    data1: 0xAB310581,
+    data2: 0xac80,
+    data3: 0x11d1,
+    data4: [0x8d, 0xf3, 0x00, 0xc0, 0x4f, 0xb6, 0xef, 0x69],
+};

src-tauri/src/extension/built_in/file_search/implementation/windows/mod.rs

@@ -0,0 +1,834 @@
+//! # Credits
+//!
+//! https://github.com/IRONAGE-Park/rag-sample/blob/3f0ad8c8012026cd3a7e453d08f041609426cb91/src/native/windows.rs
+//! is the starting point of this implementation.
+
+mod crawl_scope_manager;
+
+use super::super::EXTENSION_ID;
+use super::super::config::FileSearchConfig;
+use super::super::config::SearchBy;
+use crate::common::document::{DataSourceReference, Document};
+use crate::extension::LOCAL_QUERY_SOURCE_TYPE;
+use crate::extension::OnOpened;
+use crate::util::file::sync_get_file_icon;
+use std::borrow::Borrow;
+use std::path::PathBuf;
+use windows::{
+    Win32::System::{
+        Com::{CLSCTX_INPROC_SERVER, CoCreateInstance},
+        Ole::{OleInitialize, OleUninitialize},
+        Search::{
+            DB_NULL_HCHAPTER, DBACCESSOR_ROWDATA, DBBINDING, DBMEMOWNER_CLIENTOWNED,
+            DBPARAMIO_NOTPARAM, DBPART_VALUE, DBTYPE_WSTR, HACCESSOR, IAccessor, ICommand,
+            ICommandText, IDBCreateCommand, IDBCreateSession, IDBInitialize, IDataInitialize,
+            IRowset, MSDAINITIALIZE,
+        },
+    },
+    core::{GUID, IUnknown, Interface, PWSTR, w},
+};
+
+/// Owned version of `PWSTR` that holds the heap memory.
+///
+/// Use `as_pwstr()` to convert it to a raw pointer.
+struct PwStrOwned(Vec<u16>);
+
+impl PwStrOwned {
+    /// # SAFETY
+    ///
+    /// The returned `PWSTR` is basically a raw pointer, it is only valid within the
+    /// lifetime of `PwStrOwned`.
+    unsafe fn as_pwstr(&mut self) -> PWSTR {
+        let raw_ptr = self.0.as_mut_ptr();
+        PWSTR::from_raw(raw_ptr)
+    }
+}
+
+/// Construct `PwStrOwned` from any `str`.
+impl<S: AsRef<str> + ?Sized> From<&S> for PwStrOwned {
+    fn from(value: &S) -> Self {
+        let mut utf16_bytes = value.as_ref().encode_utf16().collect::<Vec<u16>>();
+        utf16_bytes.push(0); // the tailing NULL
+
+        PwStrOwned(utf16_bytes)
+    }
+}
+
+/// Helper function to replace unsupported characters with whitespace.
+///
+/// Windows search will error out if it encounters these characters.
+///
+/// The complete list of unsupported characters is unknown and we don't know how
+/// to escape them, so let's replace them.
+fn query_string_cleanup(old: &str) -> String {
+    const UNSUPPORTED_CHAR: [char; 2] = ['\'', '\n'];
+
+    // Using len in bytes is ok
+    let mut chars = Vec::with_capacity(old.len());
+    for char in old.chars() {
+        if UNSUPPORTED_CHAR.contains(&char) {
+            chars.push(' ');
+        } else {
+            chars.push(char);
+        }
+    }
+
+    chars.into_iter().collect()
+}
+
+/// Helper function to construct the Windows Search SQL.
+///
+/// Paging is not natively supported by windows Search SQL, it only supports `size`
+/// via the `TOP` keyword ("SELECT TOP {n} {columns}").  The SQL returned by this
+/// function will have `{n}` set to `from + size`, then we will manually implement
+/// paging.
+fn query_sql(query_string: &str, from: usize, size: usize, config: &FileSearchConfig) -> String {
+    let top_n = from
+        .checked_add(size)
+        .expect("[from + size] cannot fit into an [usize]");
+
+    // System.ItemUrl is a column that contains the file path
+    // example: "file:C:/Users/desktop.ini"
+    //
+    // System.Search.Rank is the relevance score
+    let mut sql = format!(
+        "SELECT TOP {} System.ItemUrl, System.Search.Rank FROM SystemIndex WHERE",
+        top_n
+    );
+
+    let query_string = query_string_cleanup(query_string);
+
+    let search_by_predicate = match config.search_by {
+        SearchBy::Name => {
+            // `contains(System.FileName, '{query_string}')` would be faster
+            // because it uses inverted index, but that's not what we want
+            // due to the limitation of tokenization. For example, suppose "Coco AI.rs"
+            // will be tokenized to `["Coco", "AI", "rs"]`, then if users search
+            // via `Co`, this file won't be returned because term `Co` does not
+            // exist in the index.
+            //
+            // So we use wildcard instead even though it is slower.
+            format!("(System.FileName LIKE '%{query_string}%')")
+        }
+        SearchBy::NameAndContents => {
+            // Windows File Search does not support searching by file content.
+            //
+            // `CONTAINS('query_string')` would search all columns for `query_string`,
+            // this is the closest solution we have.
+            format!("((System.FileName LIKE '%{query_string}%') OR CONTAINS('{query_string}'))")
+        }
+    };
+
+    let search_paths_predicate: Option<String> = {
+        if config.search_paths.is_empty() {
+            None
+        } else {
+            let mut output = String::from("(");
+
+            for (idx, search_path) in config.search_paths.iter().enumerate() {
+                if idx != 0 {
+                    output.push_str(" OR ");
+                }
+
+                output.push_str("SCOPE = 'file:");
+                output.push_str(&search_path);
+                output.push('\'');
+            }
+
+            output.push(')');
+
+            Some(output)
+        }
+    };
+
+    let exclude_paths_predicate: Option<String> = {
+        if config.exclude_paths.is_empty() {
+            None
+        } else {
+            let mut output = String::from("(");
+
+            for (idx, exclude_path) in config.exclude_paths.iter().enumerate() {
+                if idx != 0 {
+                    output.push_str(" AND ");
+                }
+
+                output.push_str("(NOT SCOPE = 'file:");
+                output.push_str(&exclude_path);
+                output.push('\'');
+                output.push(')');
+            }
+
+            output.push(')');
+
+            Some(output)
+        }
+    };
+
+    let file_types_predicate: Option<String> = {
+        if config.file_types.is_empty() {
+            None
+        } else {
+            let mut output = String::from("(");
+
+            for (idx, file_type) in config.file_types.iter().enumerate() {
+                if idx != 0 {
+                    output.push_str(" OR ");
+                }
+
+                // NOTE that this column contains a starting dot
+                output.push_str("System.FileExtension = '.");
+                output.push_str(&file_type);
+                output.push('\'');
+            }
+
+            output.push(')');
+
+            Some(output)
+        }
+    };
+
+    sql.push(' ');
+    sql.push_str(search_by_predicate.as_str());
+    if let Some(search_paths_predicate) = search_paths_predicate {
+        sql.push_str(" AND ");
+        sql.push_str(search_paths_predicate.as_str());
+    }
+    if let Some(exclude_paths_predicate) = exclude_paths_predicate {
+        sql.push_str(" AND ");
+        sql.push_str(exclude_paths_predicate.as_str());
+    }
+    if let Some(file_types_predicate) = file_types_predicate {
+        sql.push_str(" AND ");
+        sql.push_str(file_types_predicate.as_str());
+    }
+
+    sql
+}
+
+/// Default GUID for Search.CollatorDSO.1
+const DBGUID_DEFAULT: GUID = GUID {
+    data1: 0xc8b521fb,
+    data2: 0x5cf3,
+    data3: 0x11ce,
+    data4: [0xad, 0xe5, 0x00, 0xaa, 0x00, 0x44, 0x77, 0x3d],
+};
+
+unsafe fn create_accessor_handle(accessor: &IAccessor, index: usize) -> Result<HACCESSOR, String> {
+    let bindings = DBBINDING {
+        iOrdinal: index,
+        obValue: 0,
+        obStatus: 0,
+        obLength: 0,
+        dwPart: DBPART_VALUE.0 as u32,
+        dwMemOwner: DBMEMOWNER_CLIENTOWNED.0 as u32,
+        eParamIO: DBPARAMIO_NOTPARAM.0 as u32,
+        cbMaxLen: 512,
+        dwFlags: 0,
+        wType: DBTYPE_WSTR.0 as u16,
+        bPrecision: 0,
+        bScale: 0,
+        ..Default::default()
+    };
+    let mut status = 0;
+    let mut accessor_handle = HACCESSOR::default();
+    unsafe {
+        accessor
+            .CreateAccessor(
+                DBACCESSOR_ROWDATA.0 as u32,
+                1,
+                &bindings,
+                0,
+                &mut accessor_handle,
+                Some(&mut status),
+            )
+            .map_err(|e| e.to_string())?;
+    }
+
+    Ok(accessor_handle)
+}
+
+fn create_db_initialize() -> Result<IDBInitialize, String> {
+    unsafe {
+        let data_init: IDataInitialize =
+            CoCreateInstance(&MSDAINITIALIZE, None, CLSCTX_INPROC_SERVER)
+                .map_err(|e| e.to_string())?;
+
+        let mut unknown: Option<IUnknown> = None;
+        data_init
+            .GetDataSource(
+                None,
+                CLSCTX_INPROC_SERVER.0,
+                w!("provider=Search.CollatorDSO.1;EXTENDED PROPERTIES=\"Application=Windows\""),
+                &IDBInitialize::IID,
+                &mut unknown as *mut _ as *mut _,
+            )
+            .map_err(|e| e.to_string())?;
+
+        Ok(unknown.unwrap().cast().map_err(|e| e.to_string())?)
+    }
+}
+
+fn create_command(db_init: IDBInitialize) -> Result<ICommandText, String> {
+    unsafe {
+        let db_create_session: IDBCreateSession = db_init.cast().map_err(|e| e.to_string())?;
+        let session: IUnknown = db_create_session
+            .CreateSession(None, &IUnknown::IID)
+            .map_err(|e| e.to_string())?;
+        let db_create_command: IDBCreateCommand = session.cast().map_err(|e| e.to_string())?;
+        Ok(db_create_command
+            .CreateCommand(None, &ICommand::IID)
+            .map_err(|e| e.to_string())?
+            .cast()
+            .map_err(|e| e.to_string())?)
+    }
+}
+
+fn execute_windows_search_sql(sql_query: &str) -> Result<Vec<(String, String)>, String> {
+    unsafe {
+        let mut pwstr_owned_sql = PwStrOwned::from(sql_query);
+        // SAFETY: pwstr_owned_sql will live for the whole lifetime of this function.
+        let sql_query = pwstr_owned_sql.as_pwstr();
+
+        let db_init = create_db_initialize()?;
+        db_init.Initialize().map_err(|e| e.to_string())?;
+        let command = create_command(db_init)?;
+
+        // Set the command text
+        command
+            .SetCommandText(&DBGUID_DEFAULT, sql_query)
+            .map_err(|e| e.to_string())?;
+
+        // Execute the command
+        let mut rowset: Option<IRowset> = None;
+        command
+            .Execute(
+                None,
+                &IRowset::IID,
+                None,
+                None,
+                Some(&mut rowset as *mut _ as *mut _),
+            )
+            .map_err(|e| e.to_string())?;
+        let rowset = rowset.ok_or_else(|| {
+            format!(
+                "No rowset returned for query: {}",
+                // SAFETY: the raw pointer is not dangling
+                sql_query
+                    .to_string()
+                    .expect("the conversion should work as `sql_query` was created from a String",)
+            )
+        })?;
+
+        let accessor: IAccessor = rowset
+            .cast()
+            .map_err(|e| format!("Failed to cast to IAccessor: {}", e.to_string()))?;
+
+        let mut output = Vec::new();
+        let mut count = 0;
+        loop {
+            let mut rows_fetched = 0;
+            let mut row_handles = [std::ptr::null_mut(); 1];
+            let result = rowset.GetNextRows(
+                DB_NULL_HCHAPTER as usize,
+                0,
+                &mut rows_fetched,
+                &mut row_handles,
+            );
+            if result.is_err() {
+                break;
+            }
+            if rows_fetched == 0 {
+                break;
+            }
+
+            let mut data = Vec::new();
+
+            for i in 0..2 {
+                let mut item_name = [0u16; 512];
+
+                let accessor_handle = create_accessor_handle(&accessor, i + 1)?;
+                rowset
+                    .GetData(
+                        *row_handles[0],
+                        accessor_handle,
+                        item_name.as_mut_ptr() as *mut _,
+                    )
+                    .map_err(|e| {
+                        format!(
+                            "Failed to get data at count {}, index {}: {}",
+                            count,
+                            i,
+                            e.to_string()
+                        )
+                    })?;
+                let name = String::from_utf16_lossy(&item_name);
+                // Remove null characters
+                data.push(name.trim_end_matches('\u{0000}').to_string());
+
+                accessor
+                    .ReleaseAccessor(accessor_handle, None)
+                    .map_err(|e| {
+                        format!(
+                            "Failed to release accessor at count {}, index {}: {}",
+                            count,
+                            i,
+                            e.to_string()
+                        )
+                    })?;
+            }
+
+            output.push((data[0].clone(), data[1].clone()));
+
+            count += 1;
+            rowset
+                .ReleaseRows(
+                    1,
+                    row_handles[0],
+                    std::ptr::null_mut(),
+                    std::ptr::null_mut(),
+                    std::ptr::null_mut(),
+                )
+                .map_err(|e| {
+                    format!(
+                        "Failed to release rows at count {}: {}",
+                        count,
+                        e.to_string()
+                    )
+                })?;
+        }
+
+        Ok(output)
+    }
+}
+
+pub(crate) async fn hits(
+    query_string: &str,
+    from: usize,
+    size: usize,
+    config: &FileSearchConfig,
+) -> Result<Vec<(Document, f64)>, String> {
+    let sql = query_sql(query_string, from, size, config);
+    unsafe { OleInitialize(None).map_err(|e| e.to_string())? };
+    let result = execute_windows_search_sql(&sql)?;
+    unsafe { OleUninitialize() };
+    // .take(size) is not needed as `result` will contain `from+size` files at most
+    let result_with_paging = result.into_iter().skip(from);
+    // result_with_paging won't contain more than `size` entries
+    let mut hits = Vec::with_capacity(size);
+
+    const ITEM_URL_PREFIX: &str = "file:";
+    const ITEM_URL_PREFIX_LEN: usize = ITEM_URL_PREFIX.len();
+    for (item_url, score_str) in result_with_paging {
+        // path returned from Windows Search contains a prefix, we need to trim it.
+        //
+        // "file:C:/Users/desktop.ini" => "C:/Users/desktop.ini"
+        let file_path = &item_url[ITEM_URL_PREFIX_LEN..];
+
+        let icon = sync_get_file_icon(file_path);
+        let file_path_of_type_path = camino::Utf8Path::new(&file_path);
+        let r#where = file_path_of_type_path
+            .parent()
+            .unwrap_or_else(|| {
+                panic!(
+                    "expect path [{}] to have a parent, but it does not",
+                    file_path
+                );
+            })
+            .to_string();
+
+        let file_name = file_path_of_type_path.file_name().unwrap_or_else(|| {
+            panic!(
+                "expect path [{}] to have a file name, but it does not",
+                file_path
+            );
+        });
+        let on_opened = OnOpened::Document {
+            url: file_path.to_string(),
+        };
+
+        let doc = Document {
+            id: file_path.to_string(),
+            title: Some(file_name.to_string()),
+            source: Some(DataSourceReference {
+                r#type: Some(LOCAL_QUERY_SOURCE_TYPE.into()),
+                name: Some(EXTENSION_ID.into()),
+                id: Some(EXTENSION_ID.into()),
+                icon: Some(String::from("font_Filesearch")),
+            }),
+            category: Some(r#where),
+            on_opened: Some(on_opened),
+            url: Some(file_path.into()),
+            icon: Some(icon.to_string()),
+            ..Default::default()
+        };
+
+        let score: f64 = score_str.parse().expect(
+            "System.Search.Rank should be in range [0, 1000], which should be valid for [f64]",
+        );
+
+        hits.push((doc, score));
+    }
+
+    Ok(hits)
+}
+
+pub(crate) fn apply_config(config: &FileSearchConfig) -> Result<(), String> {
+    // To ensure Windows Search indexer index the paths we specified in the
+    // config, we will:
+    //
+    // 1. Add an inclusion rule for every search path to ensure indexer index
+    //    them
+    // 2. For the exclude paths, we exclude them from the crawl scope if they
+    //    were not included in the scope before we update the scope. Otherwise,
+    //    we cannot exclude them as doing that could potentially break other
+    //    apps (by removing the indexes they rely on).
+    //
+    // Windows APIs are pretty smart. They won't blindly add an inclusion rule if
+    // the path you are trying to include is already included. The same applies
+    // to exclusion rules as well. Since Windows APIs handle these checks for us,
+    // we don't need to worry about them.
+
+    use crawl_scope_manager::CrawlScopeManager;
+    use crawl_scope_manager::Rule;
+    use crawl_scope_manager::RuleMode;
+    use std::borrow::Cow;
+
+    /// Windows APIs need the path to contain a tailing '\'
+    fn add_tailing_backslash(path: &str) -> Cow<'_, str> {
+        if path.ends_with(r#"\"#) {
+            Cow::Borrowed(path)
+        } else {
+            let mut owned = path.to_string();
+            owned.push_str(r#"\"#);
+
+            Cow::Owned(owned)
+        }
+    }
+
+    let mut manager = CrawlScopeManager::new().map_err(|e| e.to_string())?;
+
+    let search_paths = &config.search_paths;
+    let exclude_paths = &config.exclude_paths;
+
+    // indexes to `exclude_paths` of the paths we need to exclude
+    let mut paths_to_exclude: Vec<usize> = Vec::new();
+    for (idx, exclude_path) in exclude_paths.into_iter().enumerate() {
+        let exclude_path = add_tailing_backslash(&exclude_path);
+        let exclude_path: &str = exclude_path.borrow();
+
+        if !manager
+            .is_path_included(exclude_path)
+            .map_err(|e| e.to_string())?
+        {
+            paths_to_exclude.push(idx);
+        }
+    }
+
+    for search_path in search_paths {
+        let inclusion_rule = Rule {
+            paths: PathBuf::from(add_tailing_backslash(&search_path).into_owned()),
+            mode: RuleMode::Inclusion,
+        };
+
+        manager
+            .add_rule(inclusion_rule)
+            .map_err(|e| e.to_string())?;
+    }
+
+    for idx in paths_to_exclude {
+        let exclusion_rule = Rule {
+            paths: PathBuf::from(add_tailing_backslash(&exclude_paths[idx]).into_owned()),
+            mode: RuleMode::Exclusion,
+        };
+
+        manager
+            .add_rule(exclusion_rule)
+            .map_err(|e| e.to_string())?;
+    }
+
+    manager.commit().map_err(|e| e.to_string())?;
+
+    Ok(())
+}
+
+// Skip these tests in our CI, they fail with the following error
+// "SQL is invalid: "0x80041820""
+//
+// I have no idea about the underlying root cause
+#[cfg(all(test, not(ci)))]
+mod test_windows_search {
+    use super::*;
+
+    /// Helper function for ensuring `sql` is valid SQL by actually executing it.
+    fn ensure_it_is_valid_sql(sql: &str) {
+        unsafe { OleInitialize(None).unwrap() };
+        execute_windows_search_sql(&sql).expect("SQL is invalid");
+        unsafe { OleUninitialize() };
+    }
+
+    #[test]
+    fn test_query_sql_empty_config_search_by_name() {
+        let config = FileSearchConfig {
+            search_paths: Vec::new(),
+            exclude_paths: Vec::new(),
+            file_types: Vec::new(),
+            search_by: SearchBy::Name,
+        };
+        let sql = query_sql("coco", 0, 10, &config);
+
+        assert_eq!(
+            sql,
+            "SELECT TOP 10 System.ItemUrl, System.Search.Rank FROM SystemIndex WHERE (System.FileName LIKE '%coco%')"
+        );
+        ensure_it_is_valid_sql(&sql);
+    }
+
+    #[test]
+    fn test_query_sql_empty_config_search_by_name_and_content() {
+        let config = FileSearchConfig {
+            search_paths: Vec::new(),
+            exclude_paths: Vec::new(),
+            file_types: Vec::new(),
+            search_by: SearchBy::NameAndContents,
+        };
+        let sql = query_sql("coco", 0, 10, &config);
+
+        assert_eq!(
+            sql,
+            "SELECT TOP 10 System.ItemUrl, System.Search.Rank FROM SystemIndex WHERE ((System.FileName LIKE '%coco%') OR CONTAINS('coco'))"
+        );
+        ensure_it_is_valid_sql(&sql);
+    }
+
+    #[test]
+    fn test_query_sql_with_search_paths() {
+        let config = FileSearchConfig {
+            search_paths: vec!["C:/Users/".into()],
+            exclude_paths: Vec::new(),
+            file_types: Vec::new(),
+            search_by: SearchBy::Name,
+        };
+        let sql = query_sql("coco", 0, 10, &config);
+
+        assert_eq!(
+            sql,
+            "SELECT TOP 10 System.ItemUrl, System.Search.Rank FROM SystemIndex WHERE (System.FileName LIKE '%coco%') AND (SCOPE = 'file:C:/Users/')"
+        );
+        ensure_it_is_valid_sql(&sql);
+    }
+
+    #[test]
+    fn test_query_sql_with_multiple_search_paths() {
+        let config = FileSearchConfig {
+            search_paths: vec![
+                "C:/Users/".into(),
+                "D:/Projects/".into(),
+                "E:/Documents/".into(),
+            ],
+            exclude_paths: Vec::new(),
+            file_types: Vec::new(),
+            search_by: SearchBy::Name,
+        };
+        let sql = query_sql("test", 0, 5, &config);
+
+        assert_eq!(
+            sql,
+            "SELECT TOP 5 System.ItemUrl, System.Search.Rank FROM SystemIndex WHERE (System.FileName LIKE '%test%') AND (SCOPE = 'file:C:/Users/' OR SCOPE = 'file:D:/Projects/' OR SCOPE = 'file:E:/Documents/')"
+        );
+        ensure_it_is_valid_sql(&sql);
+    }
+
+    #[test]
+    fn test_query_sql_with_exclude_paths() {
+        let config = FileSearchConfig {
+            search_paths: Vec::new(),
+            exclude_paths: vec!["C:/Windows/".into()],
+            file_types: Vec::new(),
+            search_by: SearchBy::Name,
+        };
+        let sql = query_sql("file", 0, 20, &config);
+
+        assert_eq!(
+            sql,
+            "SELECT TOP 20 System.ItemUrl, System.Search.Rank FROM SystemIndex WHERE (System.FileName LIKE '%file%') AND ((NOT SCOPE = 'file:C:/Windows/'))"
+        );
+        ensure_it_is_valid_sql(&sql);
+    }
+
+    #[test]
+    fn test_query_sql_with_multiple_exclude_paths() {
+        let config = FileSearchConfig {
+            search_paths: Vec::new(),
+            exclude_paths: vec!["C:/Windows/".into(), "C:/System/".into(), "C:/Temp/".into()],
+            file_types: Vec::new(),
+            search_by: SearchBy::Name,
+        };
+        let sql = query_sql("data", 5, 15, &config);
+
+        assert_eq!(
+            sql,
+            "SELECT TOP 20 System.ItemUrl, System.Search.Rank FROM SystemIndex WHERE (System.FileName LIKE '%data%') AND ((NOT SCOPE = 'file:C:/Windows/') AND (NOT SCOPE = 'file:C:/System/') AND (NOT SCOPE = 'file:C:/Temp/'))"
+        );
+        ensure_it_is_valid_sql(&sql);
+    }
+
+    #[test]
+    fn test_query_sql_with_file_types() {
+        let config = FileSearchConfig {
+            search_paths: Vec::new(),
+            exclude_paths: Vec::new(),
+            file_types: vec!["txt".into()],
+            search_by: SearchBy::Name,
+        };
+        let sql = query_sql("readme", 0, 10, &config);
+
+        assert_eq!(
+            sql,
+            "SELECT TOP 10 System.ItemUrl, System.Search.Rank FROM SystemIndex WHERE (System.FileName LIKE '%readme%') AND (System.FileExtension = '.txt')"
+        );
+        ensure_it_is_valid_sql(&sql);
+    }
+
+    #[test]
+    fn test_query_sql_with_multiple_file_types() {
+        let config = FileSearchConfig {
+            search_paths: Vec::new(),
+            exclude_paths: Vec::new(),
+            file_types: vec!["rs".into(), "toml".into(), "md".into(), "json".into()],
+            search_by: SearchBy::Name,
+        };
+        let sql = query_sql("config", 0, 50, &config);
+
+        assert_eq!(
+            sql,
+            "SELECT TOP 50 System.ItemUrl, System.Search.Rank FROM SystemIndex WHERE (System.FileName LIKE '%config%') AND (System.FileExtension = '.rs' OR System.FileExtension = '.toml' OR System.FileExtension = '.md' OR System.FileExtension = '.json')"
+        );
+        ensure_it_is_valid_sql(&sql);
+    }
+
+    #[test]
+    fn test_query_sql_all_fields_combined() {
+        let config = FileSearchConfig {
+            search_paths: vec!["C:/Projects/".into(), "D:/Code/".into()],
+            exclude_paths: vec!["C:/Projects/temp/".into()],
+            file_types: vec!["rs".into(), "ts".into()],
+            search_by: SearchBy::Name,
+        };
+        let sql = query_sql("main", 10, 25, &config);
+
+        assert_eq!(
+            sql,
+            "SELECT TOP 35 System.ItemUrl, System.Search.Rank FROM SystemIndex WHERE (System.FileName LIKE '%main%') AND (SCOPE = 'file:C:/Projects/' OR SCOPE = 'file:D:/Code/') AND ((NOT SCOPE = 'file:C:/Projects/temp/')) AND (System.FileExtension = '.rs' OR System.FileExtension = '.ts')"
+        );
+        ensure_it_is_valid_sql(&sql);
+    }
+
+    #[test]
+    fn test_query_sql_with_special_characters() {
+        let config = FileSearchConfig {
+            search_paths: vec!["C:/Users/John Doe/".into()],
+            exclude_paths: Vec::new(),
+            file_types: vec!["c++".into()],
+            search_by: SearchBy::Name,
+        };
+        let sql = query_sql("hello-world", 0, 10, &config);
+
+        assert_eq!(
+            sql,
+            "SELECT TOP 10 System.ItemUrl, System.Search.Rank FROM SystemIndex WHERE (System.FileName LIKE '%hello-world%') AND (SCOPE = 'file:C:/Users/John Doe/') AND (System.FileExtension = '.c++')"
+        );
+        ensure_it_is_valid_sql(&sql);
+    }
+
+    #[test]
+    fn test_query_sql_edge_case_large_offset() {
+        let config = FileSearchConfig {
+            search_paths: Vec::new(),
+            exclude_paths: Vec::new(),
+            file_types: Vec::new(),
+            search_by: SearchBy::Name,
+        };
+        let sql = query_sql("test", 100, 50, &config);
+
+        assert_eq!(
+            sql,
+            "SELECT TOP 150 System.ItemUrl, System.Search.Rank FROM SystemIndex WHERE (System.FileName LIKE '%test%')"
+        );
+        ensure_it_is_valid_sql(&sql);
+    }
+}
+
+#[cfg(test)]
+mod test {
+    use super::*;
+
+    #[test]
+    fn test_query_string_cleanup_no_unsupported_chars() {
+        let input = "hello world";
+        let result = query_string_cleanup(input);
+        assert_eq!(result, input);
+    }
+
+    #[test]
+    fn test_query_string_cleanup_single_quote() {
+        let input = "don't worry";
+        let result = query_string_cleanup(input);
+        assert_eq!(result, "don t worry");
+    }
+
+    #[test]
+    fn test_query_string_cleanup_newline() {
+        let input = "line1\nline2";
+        let result = query_string_cleanup(input);
+        assert_eq!(result, "line1 line2");
+    }
+
+    #[test]
+    fn test_query_string_cleanup_both_unsupported_chars() {
+        let input = "don't\nworry";
+        let result = query_string_cleanup(input);
+        assert_eq!(result, "don t worry");
+    }
+
+    #[test]
+    fn test_query_string_cleanup_multiple_single_quotes() {
+        let input = "it's a 'test' string";
+        let result = query_string_cleanup(input);
+        assert_eq!(result, "it s a  test  string");
+    }
+
+    #[test]
+    fn test_query_string_cleanup_multiple_newlines() {
+        let input = "line1\n\nline2\nline3";
+        let result = query_string_cleanup(input);
+        assert_eq!(result, "line1  line2 line3");
+    }
+
+    #[test]
+    fn test_query_string_cleanup_empty_string() {
+        let input = "";
+        let result = query_string_cleanup(input);
+        assert_eq!(result, input);
+    }
+
+    #[test]
+    fn test_query_string_cleanup_only_unsupported_chars() {
+        let input = "'\n'";
+        let result = query_string_cleanup(input);
+        assert_eq!(result, "   ");
+    }
+
+    #[test]
+    fn test_query_string_cleanup_unicode_characters() {
+        let input = "héllo wörld's\nfile";
+        let result = query_string_cleanup(input);
+        assert_eq!(result, "héllo wörld s file");
+    }
+
+    #[test]
+    fn test_query_string_cleanup_special_chars_preserved() {
+        let input = "test@file#name$with%symbols";
+        let result = query_string_cleanup(input);
+        assert_eq!(result, input);
+    }
+}

src-tauri/src/extension/built_in/file_search/mod.rs

@@ -0,0 +1,97 @@
+pub(crate) mod config;
+pub(crate) mod implementation;
+
+use super::super::LOCAL_QUERY_SOURCE_TYPE;
+use crate::common::{
+    error::SearchError,
+    search::{QueryResponse, QuerySource, SearchQuery},
+    traits::SearchSource,
+};
+use async_trait::async_trait;
+use config::FileSearchConfig;
+use hostname;
+use tauri::AppHandle;
+
+pub(crate) const EXTENSION_ID: &str = "File Search";
+
+/// JSON file for this extension.
+pub(crate) const PLUGIN_JSON_FILE: &str = r#"
+{
+  "id": "File Search",
+  "name": "File Search",
+  "platforms": ["macos", "windows", "linux"],
+  "description": "Search files on your system",
+  "icon": "font_Filesearch",
+  "type": "extension"
+}
+"#;
+
+pub struct FileSearchExtensionSearchSource;
+
+#[async_trait]
+impl SearchSource for FileSearchExtensionSearchSource {
+    fn get_type(&self) -> QuerySource {
+        QuerySource {
+            r#type: LOCAL_QUERY_SOURCE_TYPE.into(),
+            name: hostname::get()
+                .unwrap_or(EXTENSION_ID.into())
+                .to_string_lossy()
+                .into(),
+            id: EXTENSION_ID.into(),
+        }
+    }
+
+    async fn search(
+        &self,
+        tauri_app_handle: AppHandle,
+        query: SearchQuery,
+    ) -> Result<QueryResponse, SearchError> {
+        let Some(query_string) = query.query_strings.get("query") else {
+            return Ok(QueryResponse {
+                source: self.get_type(),
+                hits: Vec::new(),
+                total_hits: 0,
+            });
+        };
+        let from = usize::try_from(query.from).expect("from too big");
+        let size = usize::try_from(query.size).expect("size too big");
+
+        let query_string = query_string.trim();
+        if query_string.is_empty() {
+            return Ok(QueryResponse {
+                source: self.get_type(),
+                hits: Vec::new(),
+                total_hits: 0,
+            });
+        }
+
+        // Get configuration from tauri store
+        let config = FileSearchConfig::get(&tauri_app_handle);
+
+        // If search paths are empty, then the hit should be empty.
+        //
+        // Without this, empty search paths will result in a mdfind that has no `-onlyin`
+        // option, which will in turn query the whole disk volume.
+        if config.search_paths.is_empty() {
+            return Ok(QueryResponse {
+                source: self.get_type(),
+                hits: Vec::new(),
+                total_hits: 0,
+            });
+        }
+
+        // Execute search in a blocking task
+        let query_source = self.get_type();
+
+        let hits = implementation::hits(&query_string, from, size, &config)
+            .await
+            .map_err(SearchError::InternalError)?;
+
+        let total_hits = hits.len();
+        Ok(QueryResponse {
+            source: query_source,
+            hits,
+            total_hits,
+        })
+    }
+}

src-tauri/src/extension/built_in/mod.rs

@@ -0,0 +1,724 @@
+//! Built-in extensions and related stuff.
+
+pub mod ai_overview;
+pub mod application;
+pub mod calculator;
+pub mod file_search;
+pub mod pizza_engine_runtime;
+pub mod quick_ai_access;
+#[cfg(target_os = "macos")]
+pub mod window_management;
+
+use super::Extension;
+use crate::SearchSourceRegistry;
+use crate::extension::built_in::application::{set_apps_hotkey, unset_apps_hotkey};
+use crate::extension::{
+    ExtensionBundleIdBorrowed, PLUGIN_JSON_FILE_NAME, alter_extension_json_file,
+};
+use anyhow::Context;
+use file_search::config::FileSearchConfig;
+use file_search::implementation::apply_config as file_search_apply_config;
+use std::path::{Path, PathBuf};
+use tauri::{AppHandle, Manager};
+
+pub(crate) fn get_built_in_extension_directory(tauri_app_handle: &AppHandle) -> PathBuf {
+    let mut resource_dir = tauri_app_handle.path().app_data_dir().expect(
+        "User home directory not found, which should be impossible on desktop environments",
+    );
+    resource_dir.push("built_in_extensions");
+
+    resource_dir
+}
+
+/// Helper function to load the built-in extension specified by `extension_id`, used
+/// in `list_built_in_extensions()`.
+///
+/// For built-in extensions, users are only allowed to edit these fields:
+///
+///   1. alias (if this extension supports alias)
+///   2. hotkey (if this extension supports hotkey)
+///   3. enabled
+///
+/// If
+///
+///   1. The above fields have invalid value
+///   2. Other fields are modified
+///
+/// we ignore and reset them to the default value.
+async fn load_built_in_extension(
+    built_in_extensions_dir: &Path,
+    extension_id: &str,
+    default_plugin_json_file: &str,
+) -> Result<Extension, String> {
+    let mut extension_dir = built_in_extensions_dir.join(extension_id);
+    let mut default_plugin_json = serde_json::from_str::<Extension>(&default_plugin_json_file).unwrap_or_else( |e| {
+          panic!("the default extension {} file of built-in extension [{}] cannot be parsed as a valid [struct Extension], error [{}]", PLUGIN_JSON_FILE_NAME, extension_id, e);
+        });
+
+    if !extension_dir.try_exists().map_err(|e| e.to_string())? {
+        tokio::fs::create_dir_all(extension_dir.as_path())
+            .await
+            .map_err(|e| e.to_string())?;
+    }
+
+    let plugin_json_file_path = {
+        extension_dir.push(PLUGIN_JSON_FILE_NAME);
+        extension_dir
+    };
+
+    // If the JSON file does not exist, create a file with the default template and return.
+    if !plugin_json_file_path
+        .try_exists()
+        .map_err(|e| e.to_string())?
+    {
+        tokio::fs::write(plugin_json_file_path, default_plugin_json_file)
+            .await
+            .map_err(|e| e.to_string())?;
+
+        return Ok(default_plugin_json);
+    }
+
+    let plugin_json_file_content = tokio::fs::read_to_string(plugin_json_file_path.as_path())
+        .await
+        .map_err(|e| e.to_string())?;
+    let res_plugin_json = serde_json::from_str::<Extension>(&plugin_json_file_content);
+    let Ok(plugin_json) = res_plugin_json else {
+        log::warn!(
+            "user invalidated built-in extension [{}] file, overwriting it with the default template",
+            extension_id
+        );
+
+        // If the JSON file cannot be parsed as `struct Extension`, overwrite it with the default template and return.
+        tokio::fs::write(plugin_json_file_path, default_plugin_json_file)
+            .await
+            .map_err(|e| e.to_string())?;
+
+        return Ok(default_plugin_json);
+    };
+
+    // Users are only allowed to edit the below fields
+    //   1. alias (if this extension supports alias)
+    //   2. hotkey (if this extension supports hotkey)
+    //   3. enabled
+    // so we ignore all other fields.
+    let alias = if default_plugin_json.supports_alias_hotkey() {
+        plugin_json.alias.clone()
+    } else {
+        None
+    };
+    let hotkey = if default_plugin_json.supports_alias_hotkey() {
+        plugin_json.hotkey.clone()
+    } else {
+        None
+    };
+
+    let enabled = plugin_json.enabled;
+
+    default_plugin_json.alias = alias;
+    default_plugin_json.hotkey = hotkey;
+    default_plugin_json.enabled = enabled;
+
+    let final_plugin_json_file_content = serde_json::to_string_pretty(&default_plugin_json)
+        .expect("failed to serialize `struct Extension`");
+    tokio::fs::write(plugin_json_file_path, final_plugin_json_file_content)
+        .await
+        .map_err(|e| e.to_string())?;
+
+    Ok(default_plugin_json)
+}
+
+/// Return the built-in extension list.
+///
+/// Will create extension files when they are not found.
+///
+/// Users may put extension files in the built-in extension directory, but
+/// we do not care and will ignore them.
+///
+/// We only read alias/hotkey/enabled from the JSON file, we have ensured that if
+/// alias/hotkey is not supported, then it will be `None`. Besides that, no further
+/// validation is needed because nothing could go wrong.
+pub(crate) async fn list_built_in_extensions(
+    tauri_app_handle: &AppHandle,
+) -> Result<Vec<Extension>, String> {
+    let dir = get_built_in_extension_directory(tauri_app_handle);
+
+    let mut built_in_extensions = Vec::new();
+    built_in_extensions.push(
+        load_built_in_extension(
+            &dir,
+            application::QUERYSOURCE_ID_DATASOURCE_ID_DATASOURCE_NAME,
+            application::PLUGIN_JSON_FILE,
+        )
+        .await?,
+    );
+    built_in_extensions.push(
+        load_built_in_extension(
+            &dir,
+            calculator::DATA_SOURCE_ID,
+            calculator::PLUGIN_JSON_FILE,
+        )
+        .await?,
+    );
+    built_in_extensions.push(
+        load_built_in_extension(
+            &dir,
+            ai_overview::EXTENSION_ID,
+            ai_overview::PLUGIN_JSON_FILE,
+        )
+        .await?,
+    );
+    built_in_extensions.push(
+        load_built_in_extension(
+            &dir,
+            quick_ai_access::EXTENSION_ID,
+            quick_ai_access::PLUGIN_JSON_FILE,
+        )
+        .await?,
+    );
+
+    built_in_extensions.push(
+        load_built_in_extension(
+            &dir,
+            file_search::EXTENSION_ID,
+            file_search::PLUGIN_JSON_FILE,
+        )
+        .await?,
+    );
+
+    cfg_if::cfg_if! {
+      if #[cfg(target_os = "macos")] {
+          built_in_extensions.push(
+              load_built_in_extension(
+                  &dir,
+                  window_management::EXTENSION_ID,
+                  window_management::PLUGIN_JSON_FILE,
+              )
+              .await?,
+          );
+      }
+    }
+
+    Ok(built_in_extensions)
+}
+
+pub(super) async fn init_built_in_extension(
+    tauri_app_handle: &AppHandle,
+    extension: &Extension,
+    search_source_registry: &SearchSourceRegistry,
+) -> Result<(), String> {
+    log::trace!("initializing built-in extensions [{}]", extension.id);
+
+    if extension.id == application::QUERYSOURCE_ID_DATASOURCE_ID_DATASOURCE_NAME {
+        search_source_registry
+            .register_source(application::ApplicationSearchSource)
+            .await;
+        set_apps_hotkey(&tauri_app_handle)?;
+        log::debug!("built-in extension [{}] initialized", extension.id);
+    }
+
+    if extension.id == calculator::DATA_SOURCE_ID {
+        let calculator_search = calculator::CalculatorSource::new(2000f64);
+        search_source_registry
+            .register_source(calculator_search)
+            .await;
+        log::debug!("built-in extension [{}] initialized", extension.id);
+    }
+
+    if extension.id == file_search::EXTENSION_ID {
+        let file_system_search = file_search::FileSearchExtensionSearchSource;
+        search_source_registry
+            .register_source(file_system_search)
+            .await;
+        let file_search_config = FileSearchConfig::get(tauri_app_handle);
+        file_search_apply_config(&file_search_config)?;
+        log::debug!("built-in extension [{}] initialized", extension.id);
+    }
+
+    cfg_if::cfg_if! {
+      if #[cfg(target_os = "macos")] {
+          if extension.id == window_management::EXTENSION_ID {
+              let file_system_search = window_management::search_source::WindowManagementSearchSource;
+              search_source_registry
+                  .register_source(file_system_search)
+                  .await;
+
+              window_management::set_up_commands_hotkeys(tauri_app_handle, extension)?;
+              log::debug!("built-in extension [{}] initialized", extension.id);
+          }
+      }
+    }
+
+    Ok(())
+}
+
+pub(crate) fn is_extension_built_in(bundle_id: &ExtensionBundleIdBorrowed<'_>) -> bool {
+    bundle_id.developer.is_none()
+}
+
+pub(crate) async fn enable_built_in_extension(
+    tauri_app_handle: &AppHandle,
+    bundle_id: &ExtensionBundleIdBorrowed<'_>,
+) -> Result<(), String> {
+    let search_source_registry_tauri_state = tauri_app_handle.state::<SearchSourceRegistry>();
+
+    let update_extension = |extension: &mut Extension| -> Result<(), String> {
+        extension.enabled = true;
+        Ok(())
+    };
+
+    if bundle_id.extension_id == application::QUERYSOURCE_ID_DATASOURCE_ID_DATASOURCE_NAME
+        && bundle_id.sub_extension_id.is_none()
+    {
+        search_source_registry_tauri_state
+            .register_source(application::ApplicationSearchSource)
+            .await;
+        set_apps_hotkey(tauri_app_handle)?;
+
+        alter_extension_json_file(
+            &get_built_in_extension_directory(tauri_app_handle),
+            bundle_id,
+            update_extension,
+        )?;
+
+        return Ok(());
+    }
+
+    // Check if this is an application
+    if bundle_id.extension_id == application::QUERYSOURCE_ID_DATASOURCE_ID_DATASOURCE_NAME
+        && bundle_id.sub_extension_id.is_some()
+    {
+        let app_path = bundle_id.sub_extension_id.expect("just checked it is Some");
+        application::enable_app_search(tauri_app_handle, app_path)?;
+        return Ok(());
+    }
+
+    if bundle_id.extension_id == calculator::DATA_SOURCE_ID {
+        let calculator_search = calculator::CalculatorSource::new(2000f64);
+        search_source_registry_tauri_state
+            .register_source(calculator_search)
+            .await;
+        alter_extension_json_file(
+            &get_built_in_extension_directory(tauri_app_handle),
+            bundle_id,
+            update_extension,
+        )?;
+        return Ok(());
+    }
+
+    if bundle_id.extension_id == quick_ai_access::EXTENSION_ID {
+        alter_extension_json_file(
+            &get_built_in_extension_directory(tauri_app_handle),
+            bundle_id,
+            update_extension,
+        )?;
+        return Ok(());
+    }
+
+    if bundle_id.extension_id == ai_overview::EXTENSION_ID {
+        alter_extension_json_file(
+            &get_built_in_extension_directory(tauri_app_handle),
+            bundle_id,
+            update_extension,
+        )?;
+        return Ok(());
+    }
+
+    if bundle_id.extension_id == file_search::EXTENSION_ID {
+        let file_system_search = file_search::FileSearchExtensionSearchSource;
+        search_source_registry_tauri_state
+            .register_source(file_system_search)
+            .await;
+        alter_extension_json_file(
+            &get_built_in_extension_directory(tauri_app_handle),
+            bundle_id,
+            update_extension,
+        )?;
+        let file_search_config = FileSearchConfig::get(tauri_app_handle);
+        file_search_apply_config(&file_search_config)?;
+        return Ok(());
+    }
+
+    cfg_if::cfg_if! {
+        if #[cfg(target_os = "macos")] {
+            if bundle_id.extension_id == window_management::EXTENSION_ID
+                && bundle_id.sub_extension_id.is_none()
+            {
+                let built_in_extension_dir = get_built_in_extension_directory(tauri_app_handle);
+
+                let file_system_search = window_management::search_source::WindowManagementSearchSource;
+                search_source_registry_tauri_state
+                    .register_source(file_system_search)
+                    .await;
+
+                let extension =
+                    load_extension_from_json_file(&built_in_extension_dir, bundle_id.extension_id)?;
+                window_management::set_up_commands_hotkeys(tauri_app_handle, &extension)?;
+
+                alter_extension_json_file(&built_in_extension_dir, bundle_id, update_extension)?;
+
+                return Ok(());
+            }
+
+            if bundle_id.extension_id == window_management::EXTENSION_ID {
+                if let Some(command_id) = bundle_id.sub_extension_id {
+                    let built_in_extension_dir = get_built_in_extension_directory(tauri_app_handle);
+                    alter_extension_json_file(&built_in_extension_dir, bundle_id, update_extension)?;
+
+                    let extension =
+                        load_extension_from_json_file(&built_in_extension_dir, bundle_id.extension_id)?;
+                    window_management::set_up_command_hotkey(tauri_app_handle, &extension, command_id)?;
+                }
+            }
+        }
+    }
+
+    Ok(())
+}
+
+pub(crate) async fn disable_built_in_extension(
+    tauri_app_handle: &AppHandle,
+    bundle_id: &ExtensionBundleIdBorrowed<'_>,
+) -> Result<(), String> {
+    let search_source_registry_tauri_state = tauri_app_handle.state::<SearchSourceRegistry>();
+
+    let update_extension = |extension: &mut Extension| -> Result<(), String> {
+        extension.enabled = false;
+        Ok(())
+    };
+
+    if bundle_id.extension_id == application::QUERYSOURCE_ID_DATASOURCE_ID_DATASOURCE_NAME
+        && bundle_id.sub_extension_id.is_none()
+    {
+        search_source_registry_tauri_state
+            .remove_source(bundle_id.extension_id)
+            .await;
+        unset_apps_hotkey(tauri_app_handle)?;
+
+        alter_extension_json_file(
+            &get_built_in_extension_directory(tauri_app_handle),
+            bundle_id,
+            update_extension,
+        )?;
+        return Ok(());
+    }
+
+    // Check if this is an application
+    if bundle_id.extension_id == application::QUERYSOURCE_ID_DATASOURCE_ID_DATASOURCE_NAME
+        && bundle_id.sub_extension_id.is_some()
+    {
+        let app_path = bundle_id.sub_extension_id.expect("just checked it is Some");
+        application::disable_app_search(tauri_app_handle, app_path)?;
+        return Ok(());
+    }
+
+    if bundle_id.extension_id == calculator::DATA_SOURCE_ID {
+        search_source_registry_tauri_state
+            .remove_source(bundle_id.extension_id)
+            .await;
+        alter_extension_json_file(
+            &get_built_in_extension_directory(tauri_app_handle),
+            bundle_id,
+            update_extension,
+        )?;
+        return Ok(());
+    }
+
+    if bundle_id.extension_id == quick_ai_access::EXTENSION_ID {
+        alter_extension_json_file(
+            &get_built_in_extension_directory(tauri_app_handle),
+            bundle_id,
+            update_extension,
+        )?;
+
+        return Ok(());
+    }
+
+    if bundle_id.extension_id == ai_overview::EXTENSION_ID {
+        alter_extension_json_file(
+            &get_built_in_extension_directory(tauri_app_handle),
+            bundle_id,
+            update_extension,
+        )?;
+
+        return Ok(());
+    }
+
+    if bundle_id.extension_id == file_search::EXTENSION_ID {
+        search_source_registry_tauri_state
+            .remove_source(bundle_id.extension_id)
+            .await;
+        alter_extension_json_file(
+            &get_built_in_extension_directory(tauri_app_handle),
+            bundle_id,
+            update_extension,
+        )?;
+        return Ok(());
+    }
+
+    cfg_if::cfg_if! {
+        if #[cfg(target_os = "macos")] {
+            if bundle_id.extension_id == window_management::EXTENSION_ID
+                && bundle_id.sub_extension_id.is_none()
+            {
+                let built_in_extension_dir = get_built_in_extension_directory(tauri_app_handle);
+
+                search_source_registry_tauri_state
+                    .remove_source(bundle_id.extension_id)
+                    .await;
+                alter_extension_json_file(&built_in_extension_dir, bundle_id, update_extension)?;
+
+                let extension =
+                    load_extension_from_json_file(&built_in_extension_dir, bundle_id.extension_id)?;
+                window_management::unset_commands_hotkeys(tauri_app_handle, &extension)?;
+            }
+
+            if bundle_id.extension_id == window_management::EXTENSION_ID {
+                if let Some(command_id) = bundle_id.sub_extension_id {
+                    let built_in_extension_dir = get_built_in_extension_directory(tauri_app_handle);
+                    alter_extension_json_file(&built_in_extension_dir, bundle_id, update_extension)?;
+
+                    let extension =
+                        load_extension_from_json_file(&built_in_extension_dir, bundle_id.extension_id)?;
+                    window_management::unset_command_hotkey(tauri_app_handle, &extension, command_id)?;
+                }
+            }
+        }
+    }
+
+    Ok(())
+}
+
+pub(crate) fn set_built_in_extension_alias(
+    tauri_app_handle: &AppHandle,
+    bundle_id: &ExtensionBundleIdBorrowed<'_>,
+    alias: &str,
+) -> Result<(), String> {
+    if bundle_id.extension_id == application::QUERYSOURCE_ID_DATASOURCE_ID_DATASOURCE_NAME {
+        if let Some(app_path) = bundle_id.sub_extension_id {
+            application::set_app_alias(tauri_app_handle, app_path, alias);
+        }
+    }
+
+    cfg_if::cfg_if! {
+        if #[cfg(target_os = "macos")] {
+            if bundle_id.extension_id == window_management::EXTENSION_ID
+                && bundle_id.sub_extension_id.is_some()
+            {
+                let update_function = |ext: &mut Extension| {
+                    ext.alias = Some(alias.to_string());
+                    Ok(())
+                };
+                alter_extension_json_file(
+                    &get_built_in_extension_directory(tauri_app_handle),
+                    bundle_id,
+                    update_function,
+                )?;
+            }
+        }
+    }
+
+    Ok(())
+}
+
+pub(crate) fn register_built_in_extension_hotkey(
+    tauri_app_handle: &AppHandle,
+    bundle_id: &ExtensionBundleIdBorrowed<'_>,
+    hotkey: &str,
+) -> Result<(), String> {
+    if bundle_id.extension_id == application::QUERYSOURCE_ID_DATASOURCE_ID_DATASOURCE_NAME {
+        if let Some(app_path) = bundle_id.sub_extension_id {
+            application::register_app_hotkey(&tauri_app_handle, app_path, hotkey)?;
+        }
+    }
+
+    cfg_if::cfg_if! {
+        if #[cfg(target_os = "macos")] {
+            let update_function = |ext: &mut Extension| {
+                ext.hotkey = Some(hotkey.into());
+
+                Ok(())
+            };
+
+            if bundle_id.extension_id == window_management::EXTENSION_ID {
+                if let Some(command_id) = bundle_id.sub_extension_id {
+                    alter_extension_json_file(
+                        &get_built_in_extension_directory(tauri_app_handle),
+                        bundle_id,
+                        update_function,
+                    )?;
+
+                    window_management::register_command_hotkey(tauri_app_handle, command_id, hotkey)?;
+                }
+            }
+        }
+    }
+
+    Ok(())
+}
+
+pub(crate) fn unregister_built_in_extension_hotkey(
+    tauri_app_handle: &AppHandle,
+    bundle_id: &ExtensionBundleIdBorrowed<'_>,
+) -> Result<(), String> {
+    if bundle_id.extension_id == application::QUERYSOURCE_ID_DATASOURCE_ID_DATASOURCE_NAME {
+        if let Some(app_path) = bundle_id.sub_extension_id {
+            application::unregister_app_hotkey(&tauri_app_handle, app_path)?;
+        }
+    }
+
+    cfg_if::cfg_if! {
+        if #[cfg(target_os = "macos")] {
+            let update_function = |ext: &mut Extension| {
+                ext.hotkey = None;
+
+                Ok(())
+            };
+
+            if bundle_id.extension_id == window_management::EXTENSION_ID {
+                if let Some(command_id) = bundle_id.sub_extension_id {
+
+                    let extension = load_extension_from_json_file(
+                        &get_built_in_extension_directory(tauri_app_handle),
+                        bundle_id.extension_id,
+                    )
+                    .unwrap();
+                    window_management::unregister_command_hotkey(tauri_app_handle, &extension, command_id)?;
+                    alter_extension_json_file(
+                        &get_built_in_extension_directory(tauri_app_handle),
+                        bundle_id,
+                        update_function,
+                    )
+                    .unwrap();
+                }
+            }
+        }
+    }
+
+    Ok(())
+}
+
+fn split_extension_id(extension_id: &str) -> (&str, Option<&str>) {
+    match extension_id.find('.') {
+        Some(idx) => (&extension_id[..idx], Some(&extension_id[idx + 1..])),
+        None => (extension_id, None),
+    }
+}
+
+fn load_extension_from_json_file(
+    extension_directory: &Path,
+    extension_id: &str,
+) -> Result<Extension, String> {
+    let (parent_extension_id, _opt_sub_extension_id) = split_extension_id(extension_id);
+    let json_file_path = {
+        let mut extension_directory_path = extension_directory.join(parent_extension_id);
+        extension_directory_path.push(PLUGIN_JSON_FILE_NAME);
+
+        extension_directory_path
+    };
+
+    let mut extension = serde_json::from_reader::<_, Extension>(
+        std::fs::File::open(&json_file_path)
+            .with_context(|| {
+                format!(
+                    "the [{}] file for extension [{}] is missing or broken",
+                    PLUGIN_JSON_FILE_NAME, parent_extension_id
+                )
+            })
+            .map_err(|e| e.to_string())?,
+    )
+    .map_err(|e| e.to_string())?;
+
+    super::canonicalize_relative_icon_path(extension_directory, &mut extension)?;
+
+    Ok(extension)
+}
+
+#[allow(unused_macros)] // #[function_name::named] only used on macOS
+#[function_name::named]
+pub(crate) async fn is_built_in_extension_enabled(
+    tauri_app_handle: &AppHandle,
+    bundle_id: &ExtensionBundleIdBorrowed<'_>,
+) -> Result<bool, String> {
+    let search_source_registry_tauri_state = tauri_app_handle.state::<SearchSourceRegistry>();
+
+    if bundle_id.extension_id == application::QUERYSOURCE_ID_DATASOURCE_ID_DATASOURCE_NAME
+        && bundle_id.sub_extension_id.is_none()
+    {
+        return Ok(search_source_registry_tauri_state
+            .get_source(bundle_id.extension_id)
+            .await
+            .is_some());
+    }
+
+    // Check if this is an application
+    if bundle_id.extension_id == application::QUERYSOURCE_ID_DATASOURCE_ID_DATASOURCE_NAME {
+        if let Some(app_path) = bundle_id.sub_extension_id {
+            return Ok(application::is_app_search_enabled(app_path));
+        }
+    }
+
+    if bundle_id.extension_id == calculator::DATA_SOURCE_ID {
+        return Ok(search_source_registry_tauri_state
+            .get_source(bundle_id.extension_id)
+            .await
+            .is_some());
+    }
+
+    if bundle_id.extension_id == quick_ai_access::EXTENSION_ID {
+        let extension = load_extension_from_json_file(
+            &get_built_in_extension_directory(tauri_app_handle),
+            bundle_id.extension_id,
+        )?;
+        return Ok(extension.enabled);
+    }
+
+    if bundle_id.extension_id == ai_overview::EXTENSION_ID {
+        let extension = load_extension_from_json_file(
+            &get_built_in_extension_directory(tauri_app_handle),
+            bundle_id.extension_id,
+        )?;
+        return Ok(extension.enabled);
+    }
+
+    if bundle_id.extension_id == file_search::EXTENSION_ID && bundle_id.sub_extension_id.is_none() {
+        return Ok(search_source_registry_tauri_state
+            .get_source(bundle_id.extension_id)
+            .await
+            .is_some());
+    }
+
+    cfg_if::cfg_if! {
+        if #[cfg(target_os = "macos")] {
+            // Window Management
+            if bundle_id.extension_id == window_management::EXTENSION_ID
+                && bundle_id.sub_extension_id.is_none()
+            {
+                return Ok(search_source_registry_tauri_state
+                    .get_source(bundle_id.extension_id)
+                    .await
+                    .is_some());
+            }
+
+            // Window Management commands
+            if bundle_id.extension_id == window_management::EXTENSION_ID
+                && let Some(command_id) = bundle_id.sub_extension_id
+            {
+                let extension = load_extension_from_json_file(
+                    &get_built_in_extension_directory(tauri_app_handle),
+                    bundle_id.extension_id,
+                )?;
+                let commands = extension
+                    .commands
+                    .expect("window management extension has commands");
+
+                let extension = commands.iter().find( |cmd| cmd.id == command_id).unwrap_or_else(|| {
+                    panic!("function [{}()] invoked with a Window Management command that does not exist, extension ID [{}] ", function_name!(), command_id)
+                });
+
+                return Ok(extension.enabled);
+            }
+        }
+    }
+
+    unreachable!("extension [{:?}] is not a built-in extension", bundle_id)
+}

src-tauri/src/extension/built_in/pizza_engine_runtime.rs

@@ -0,0 +1,76 @@
+//! We use Pizza Engine to index applications and local files. The engine will be
+//! run in the thread/runtime defined in this file.
+//!
+//! # Why such a thread/runtime is needed
+//!
+//! Generally, Tokio async runtime requires all the async tasks running on it to be
+//! `Send` and `Sync`, but the async tasks created by Pizza Engine are not,
+//! which forces us to create a dedicated thread/runtime to execute them.
+
+use std::any::Any;
+use std::collections::HashMap;
+use std::collections::hash_map::Entry;
+use std::sync::OnceLock;
+
+pub(crate) trait SearchSourceState {
+    #[cfg_attr(not(feature = "use_pizza_engine"), allow(unused))]
+    fn as_mut_any(&mut self) -> &mut dyn Any;
+}
+
+#[async_trait::async_trait(?Send)]
+pub(crate) trait Task: Send + Sync {
+    fn search_source_id(&self) -> &'static str;
+
+    async fn exec(&mut self, state: &mut Option<Box<dyn SearchSourceState>>);
+}
+
+pub(crate) static RUNTIME_TX: OnceLock<tokio::sync::mpsc::UnboundedSender<Box<dyn Task>>> =
+    OnceLock::new();
+
+/// This function blocks until the runtime thread is ready for accepting tasks.
+pub(crate) async fn start_pizza_engine_runtime() {
+    const THREAD_NAME: &str = "Pizza engine runtime thread";
+
+    log::trace!("starting Pizza engine runtime");
+    let (engine_start_signal_tx, engine_start_signal_rx) = tokio::sync::oneshot::channel();
+
+    std::thread::Builder::new()
+        .name(THREAD_NAME.into())
+        .spawn(move || {
+            let rt = tokio::runtime::Runtime::new().unwrap();
+
+            let main = async {
+                let mut states: HashMap<String, Option<Box<dyn SearchSourceState>>> =
+                    HashMap::new();
+
+                let (tx, mut rx) = tokio::sync::mpsc::unbounded_channel();
+                RUNTIME_TX.set(tx).unwrap();
+
+                engine_start_signal_tx
+                    .send(())
+                    .expect("engine_start_signal_rx dropped");
+
+                while let Some(mut task) = rx.recv().await {
+                    let opt_search_source_state = match states.entry(task.search_source_id().into())
+                    {
+                        Entry::Occupied(o) => o.into_mut(),
+                        Entry::Vacant(v) => v.insert(None),
+                    };
+                    task.exec(opt_search_source_state).await;
+                }
+            };
+
+            rt.block_on(main);
+        })
+        .unwrap_or_else(|e| {
+            panic!(
+                "failed to start thread [{}] due to error [{}]",
+                THREAD_NAME, e
+            );
+        });
+
+    engine_start_signal_rx
+        .await
+        .expect("engine_start_signal_tx dropped, the runtime thread could be dead");
+    log::trace!("Pizza engine runtime started");
+}

src-tauri/src/extension/built_in/quick_ai_access.rs

@@ -0,0 +1,12 @@
+pub(super) const EXTENSION_ID: &str = "QuickAIAccess";
+
+pub(crate) const PLUGIN_JSON_FILE: &str = r#"
+{
+  "id": "QuickAIAccess",
+  "name": "Quick AI Access",
+  "description": "...",
+  "icon": "font_a-QuickAIAccess",
+  "type": "ai_extension",
+  "enabled": true
+}
+"#;

src-tauri/src/extension/built_in/window_management/actions.rs

@@ -0,0 +1,134 @@
+#[derive(Debug, Clone, PartialEq, Copy, Hash, serde::Serialize, serde::Deserialize)]
+pub enum Action {
+    /// Move the window to fill left half of the screen.
+    TopHalf,
+    /// Move the window to fill bottom half of the screen.
+    BottomHalf,
+    /// Move the window to fill left half of the screen.
+    LeftHalf,
+    /// Move the window to fill right half of the screen.
+    RightHalf,
+    /// Move the window to fill center half of the screen.
+    CenterHalf,
+
+    /// Resize window to the top left quarter of the screen.
+    TopLeftQuarter,
+    /// Resize window to the top right quarter of the screen.
+    TopRightQuarter,
+    /// Resize window to the bottom left quarter of the screen.
+    BottomLeftQuarter,
+    /// Resize window to the bottom right quarter of the screen.
+    BottomRightQuarter,
+
+    /// Resize window to the top left sixth of the screen.
+    TopLeftSixth,
+    /// Resize window to the top center sixth of the screen.
+    TopCenterSixth,
+    /// Resize window to the top right sixth of the screen.
+    TopRightSixth,
+    /// Resize window to the bottom left sixth of the screen.
+    BottomLeftSixth,
+    /// Resize window to the bottom center sixth of the screen.
+    BottomCenterSixth,
+    /// Resize window to the bottom right sixth of the screen.
+    BottomRightSixth,
+
+    /// Resize window to the top third of the screen.
+    TopThird,
+    /// Resize window to the middle third of the screen.
+    MiddleThird,
+    /// Resize window to the bottom third of the screen.
+    BottomThird,
+
+    /// Center window in the screen.
+    Center,
+
+    /// Resize window to the first fourth of the screen.
+    FirstFourth,
+    /// Resize window to the second fourth of the screen.
+    SecondFourth,
+    /// Resize window to the third fourth of the screen.
+    ThirdFourth,
+    /// Resize window to the last fourth of the screen.
+    LastFourth,
+
+    /// Resize window to the first third of the screen.
+    FirstThird,
+    /// Resize window to the center third of the screen.
+    CenterThird,
+    /// Resize window to the last third of the screen.
+    LastThird,
+
+    /// Resize window to the first two thirds of the screen.
+    FirstTwoThirds,
+    /// Resize window to the center two thirds of the screen.
+    CenterTwoThirds,
+    /// Resize window to the last two thirds of the screen.
+    LastTwoThirds,
+
+    /// Resize window to the first three fourths of the screen.
+    FirstThreeFourths,
+    /// Resize window to the center three fourths of the screen.
+    CenterThreeFourths,
+    /// Resize window to the last three fourths of the screen.
+    LastThreeFourths,
+
+    /// Resize window to the top three fourths of the screen.
+    TopThreeFourths,
+    /// Resize window to the bottom three fourths of the screen.
+    BottomThreeFourths,
+
+    /// Resize window to the top two thirds of the screen.
+    TopTwoThirds,
+    /// Resize window to the bottom two thirds of the screen.
+    BottomTwoThirds,
+    /// Resize window to the top center two thirds of the screen.
+    TopCenterTwoThirds,
+
+    /// Resize window to the top first fourth of the screen.
+    TopFirstFourth,
+    /// Resize window to the top second fourth of the screen.
+    TopSecondFourth,
+    /// Resize window to the top third fourth of the screen.
+    TopThirdFourth,
+    /// Resize window to the top last fourth of the screen.
+    TopLastFourth,
+
+    /// Increase the window until it reaches the screen size.
+    MakeLarger,
+    /// Decrease the window until it reaches its minimal size.
+    MakeSmaller,
+
+    /// Maximize window to almost fit the screen.
+    AlmostMaximize,
+    /// Maximize window to fit the screen.
+    Maximize,
+    /// Maximize width of window to fit the screen.
+    MaximizeWidth,
+    /// Maximize height of window to fit the screen.
+    MaximizeHeight,
+
+    /// Move window to the top edge of the screen.
+    MoveUp,
+    /// Move window to the bottom of the screen.
+    MoveDown,
+    /// Move window to the left edge of the screen.
+    MoveLeft,
+    /// Move window to the right edge of the screen.
+    MoveRight,
+
+    /// Move window to the next desktop.
+    NextDesktop,
+    /// Move window to the previous desktop.
+    PreviousDesktop,
+    /// Move window to the next display.
+    NextDisplay,
+    /// Move window to the previous display.
+    PreviousDisplay,
+
+    /// Restore window to its last position.
+    Restore,
+
+    /// Toggle fullscreen mode.
+    ToggleFullscreen,
+}

src-tauri/src/extension/built_in/window_management/backend/mod.rs

@@ -0,0 +1,638 @@
+//! This module calls macOS APIs to implement various helper functions needed by
+//! to perform the defined actions.
+
+mod private;
+
+use std::ffi::c_uint;
+use std::ffi::c_ushort;
+use std::ffi::c_void;
+use std::ops::Deref;
+use std::ptr::NonNull;
+
+use objc2::MainThreadMarker;
+use objc2_app_kit::NSEvent;
+use objc2_app_kit::NSScreen;
+use objc2_app_kit::NSWorkspace;
+use objc2_application_services::AXError;
+use objc2_application_services::AXUIElement;
+use objc2_application_services::AXValue;
+use objc2_application_services::AXValueType;
+use objc2_core_foundation::CFBoolean;
+use objc2_core_foundation::CFRetained;
+use objc2_core_foundation::CFString;
+use objc2_core_foundation::CFType;
+use objc2_core_foundation::CGPoint;
+use objc2_core_foundation::CGRect;
+use objc2_core_foundation::CGSize;
+use objc2_core_foundation::Type;
+use objc2_core_foundation::{CFArray, CFDictionary, CFNumber};
+use objc2_core_graphics::CGError;
+use objc2_core_graphics::CGEvent;
+use objc2_core_graphics::CGEventFlags;
+use objc2_core_graphics::CGEventTapLocation;
+use objc2_core_graphics::CGEventType;
+use objc2_core_graphics::CGMouseButton;
+use objc2_core_graphics::CGRectGetMidX;
+use objc2_core_graphics::CGRectGetMinY;
+use objc2_core_graphics::CGWindowID;
+
+use super::error::Error;
+
+use private::CGSCopyManagedDisplaySpaces;
+use private::CGSGetActiveSpace;
+use private::CGSMainConnectionID;
+use private::CGSSpaceID;
+use std::collections::HashMap;
+use std::sync::{LazyLock, Mutex};
+
+fn intersects(r1: CGRect, r2: CGRect) -> bool {
+    let overlapping = !(r1.origin.x + r1.size.width < r2.origin.x
+        || r1.origin.y + r1.size.height < r2.origin.y
+        || r1.origin.x > r2.origin.x + r2.size.width
+        || r1.origin.y > r2.origin.y + r2.size.height);
+
+    overlapping
+}
+
+/// Core graphics APIs use flipped coordinate system, while AppKit uses the
+/// unflippled version, they differ in the y-axis.  We need to do the conversion
+/// (to `CGPoint.y`) manually.
+fn flip_frame_y(main_screen_height: f64, frame_height: f64, frame_unflipped_y: f64) -> f64 {
+    main_screen_height - (frame_unflipped_y + frame_height)
+}
+
+/// Helper function to extract an UI element's origin.
+fn get_ui_element_origin(ui_element: &CFRetained<AXUIElement>) -> Result<CGPoint, Error> {
+    let mut position_value: *const CFType = std::ptr::null();
+    let ptr_to_position_value = NonNull::new(&mut position_value).unwrap();
+    let position_attr = CFString::from_static_str("AXPosition");
+    let error = unsafe { ui_element.copy_attribute_value(&position_attr, ptr_to_position_value) };
+
+    if error != AXError::Success {
+        return Err(Error::AXError(error));
+    }
+    assert!(!position_value.is_null());
+
+    let position: CFRetained<AXValue> =
+        unsafe { CFRetained::from_raw(NonNull::new(position_value.cast_mut().cast()).unwrap()) };
+
+    let mut position_cg_point = CGPoint::ZERO;
+    let ptr_to_position_cg_point =
+        NonNull::new((&mut position_cg_point as *mut CGPoint).cast()).unwrap();
+
+    let result = unsafe { position.value(AXValueType::CGPoint, ptr_to_position_cg_point) };
+    assert!(result, "type mismatched");
+
+    Ok(position_cg_point)
+}
+
+/// Helper function to extract an UI element's size.
+fn get_ui_element_size(ui_element: &CFRetained<AXUIElement>) -> Result<CGSize, Error> {
+    let mut size_value: *const CFType = std::ptr::null();
+    let ptr_to_size_value = NonNull::new(&mut size_value).unwrap();
+    let size_attr = CFString::from_static_str("AXSize");
+    let error = unsafe { ui_element.copy_attribute_value(&size_attr, ptr_to_size_value) };
+
+    if error != AXError::Success {
+        return Err(Error::AXError(error));
+    }
+    assert!(!size_value.is_null());
+
+    let size: CFRetained<AXValue> =
+        unsafe { CFRetained::from_raw(NonNull::new(size_value.cast_mut().cast()).unwrap()) };
+
+    let mut size_cg_size = CGSize::ZERO;
+    let ptr_to_size_cg_size = NonNull::new((&mut size_cg_size as *mut CGSize).cast()).unwrap();
+
+    let result = unsafe { size.value(AXValueType::CGSize, ptr_to_size_cg_size) };
+    assert!(result, "type mismatched");
+
+    Ok(size_cg_size)
+}
+
+/// Get the frontmost/focused window (as an UI element).
+fn get_frontmost_window() -> Result<CFRetained<AXUIElement>, Error> {
+    let workspace = unsafe { NSWorkspace::sharedWorkspace() };
+    let frontmost_app =
+        unsafe { workspace.frontmostApplication() }.ok_or(Error::CannotFindFocusWindow)?;
+
+    let pid = unsafe { frontmost_app.processIdentifier() };
+
+    let app_element = unsafe { AXUIElement::new_application(pid) };
+
+    let mut window_element: *const CFType = std::ptr::null();
+    let ptr_to_window_element = NonNull::new(&mut window_element).unwrap();
+    let focused_window_attr = CFString::from_static_str("AXFocusedWindow");
+
+    let error =
+        unsafe { app_element.copy_attribute_value(&focused_window_attr, ptr_to_window_element) };
+
+    if error != AXError::Success {
+        return Err(Error::AXError(error));
+    }
+    assert!(!window_element.is_null());
+
+    let window_element: *mut AXUIElement = window_element.cast::<AXUIElement>().cast_mut();
+
+    let window = unsafe { CFRetained::from_raw(NonNull::new(window_element).unwrap()) };
+
+    Ok(window)
+}
+
+/// Get the CGWindowID of the frontmost/focused window.
+#[allow(unused)] // In case we need it in the future
+pub(crate) fn get_frontmost_window_id() -> Result<CGWindowID, Error> {
+    let element = get_frontmost_window()?;
+    let ptr: NonNull<AXUIElement> = CFRetained::as_ptr(&element);
+
+    let mut window_id_buffer: CGWindowID = 0;
+    let error =
+        unsafe { private::_AXUIElementGetWindow(ptr.as_ptr(), &mut window_id_buffer as *mut _) };
+    if error != AXError::Success {
+        return Err(Error::AXError(error));
+    }
+
+    Ok(window_id_buffer)
+}
+
+/// Returns the workspace ID list grouped by display.  For example, suppose you
+/// have 2 displays and 10 workspaces (5 workspaces per display), then this
+/// function might return something like:
+///
+/// ```text
+/// [
+///   [8, 11, 12, 13, 24],
+///   [519, 77, 15, 249, 414]
+/// ]
+/// ```
+///
+/// Even though this function return macOS internal space IDs, they should correspond
+/// to the logical workspace that users are familiar with.  The display that contains
+/// workspaces `[8, 11, 12, 13, 24]` should be your main display; workspace 8 represents
+/// Desktop 1, and workspace 414 represents Desktop 10.
+fn workspace_ids_grouped_by_display() -> Vec<Vec<CGSSpaceID>> {
+    unsafe {
+        let mut ret = Vec::new();
+        let conn = CGSMainConnectionID();
+
+        let display_spaces_raw = CGSCopyManagedDisplaySpaces(conn);
+        let display_spaces: CFRetained<CFArray> =
+            CFRetained::from_raw(NonNull::new(display_spaces_raw).unwrap());
+
+        let key_spaces: CFRetained<CFString> = CFString::from_static_str("Spaces");
+        let key_spaces_ptr: NonNull<CFString> = CFRetained::as_ptr(&key_spaces);
+        let key_id64: CFRetained<CFString> = CFString::from_static_str("id64");
+        let key_id64_ptr: NonNull<CFString> = CFRetained::as_ptr(&key_id64);
+
+        for i in 0..display_spaces.count() {
+            let mut workspaces_of_this_display = Vec::new();
+
+            let dict_ref = display_spaces.value_at_index(i);
+            let dict: &CFDictionary = &*(dict_ref as *const CFDictionary);
+
+            let mut ptr_to_value_buffer: *const c_void = std::ptr::null();
+            let key_exists = dict.value_if_present(
+                key_spaces_ptr.as_ptr().cast::<c_void>().cast_const(),
+                &mut ptr_to_value_buffer as *mut _,
+            );
+            assert!(key_exists);
+            assert!(!ptr_to_value_buffer.is_null());
+
+            let spaces_raw: *const CFArray = ptr_to_value_buffer.cast::<CFArray>();
+
+            let spaces = &*spaces_raw;
+
+            for idx in 0..spaces.count() {
+                let workspace_dictionary: &CFDictionary =
+                    &*spaces.value_at_index(idx).cast::<CFDictionary>();
+
+                let mut ptr_to_value_buffer: *const c_void = std::ptr::null();
+                let key_exists = workspace_dictionary.value_if_present(
+                    key_id64_ptr.as_ptr().cast::<c_void>().cast_const(),
+                    &mut ptr_to_value_buffer as *mut _,
+                );
+                assert!(key_exists);
+                assert!(!ptr_to_value_buffer.is_null());
+
+                let ptr_workspace_id = ptr_to_value_buffer.cast::<CFNumber>();
+                let workspace_id = (&*ptr_workspace_id).as_i32().unwrap();
+
+                workspaces_of_this_display.push(workspace_id);
+            }
+
+            ret.push(workspaces_of_this_display);
+        }
+
+        ret
+    }
+}
+
+/// Get the next workspace's logical ID.  By logical ID, we mean the ID that
+/// users are familiar with, workspace 1/2/3 and so on, rather than the internal
+/// `CGSSpaceID`.
+///
+/// NOTE that this function returns None when the current workspace is the last
+/// workspace in the current display.
+pub(crate) fn get_next_workspace_logical_id() -> Option<usize> {
+    let window_server_connection = unsafe { CGSMainConnectionID() };
+    let current_workspace_id = unsafe { CGSGetActiveSpace(window_server_connection) };
+
+    // Logical ID starts from 1
+    let mut logical_id = 1_usize;
+
+    for workspaces_in_a_display in workspace_ids_grouped_by_display() {
+        for (idx, workspace_raw_id) in workspaces_in_a_display.iter().enumerate() {
+            if *workspace_raw_id == current_workspace_id {
+                // We found it, now check if it is the last workspace in this display
+                if idx == workspaces_in_a_display.len() - 1 {
+                    return None;
+                } else {
+                    return Some(logical_id + 1);
+                }
+            } else {
+                logical_id += 1;
+                continue;
+            }
+        }
+    }
+
+    unreachable!(
+        "unless the private API CGSGetActiveSpace() is broken, it should return an ID that is in the workspace ID list"
+    )
+}
+
+/// Get the previous workspace's logical ID.
+///
+/// See [`get_next_workspace_logical_id`] for the doc.
+pub(crate) fn get_previous_workspace_logical_id() -> Option<usize> {
+    let window_server_connection = unsafe { CGSMainConnectionID() };
+    let current_workspace_id = unsafe { CGSGetActiveSpace(window_server_connection) };
+
+    // Logical ID starts from 1
+    let mut logical_id = 1_usize;
+
+    for workspaces_in_a_display in workspace_ids_grouped_by_display() {
+        for (idx, workspace_raw_id) in workspaces_in_a_display.iter().enumerate() {
+            if *workspace_raw_id == current_workspace_id {
+                // We found it, now check if it is the first workspace in this display
+                if idx == 0 {
+                    return None;
+                } else {
+                    // this sub operation is safe, logical_id is at least 2
+                    return Some(logical_id - 1);
+                }
+            } else {
+                logical_id += 1;
+                continue;
+            }
+        }
+    }
+
+    unreachable!(
+        "unless the private API CGSGetActiveSpace() is broken, it should return an ID that is in the workspace ID list"
+    )
+}
+
+/// Move the frontmost window to the specified workspace.
+///
+/// Credits to the Silica library
+///
+/// * https://github.com/ianyh/Silica/blob/b91a18dbb822e99ce6b487d1cb4841e863139b2a/Silica/Sources/SIWindow.m#L215-L260
+/// * https://github.com/ianyh/Silica/blob/b91a18dbb822e99ce6b487d1cb4841e863139b2a/Silica/Sources/SISystemWideElement.m#L29-L65
+pub(crate) fn move_frontmost_window_to_workspace(space: usize) -> Result<(), Error> {
+    assert!(space >= 1);
+    if space > 16 {
+        return Err(Error::TooManyWorkspace);
+    }
+
+    let window_frame = get_frontmost_window_frame()?;
+    let close_button_frame = get_frontmost_window_close_button_frame()?;
+
+    let mouse_cursor_point = CGPoint::new(
+        unsafe { CGRectGetMidX(close_button_frame) },
+        window_frame.origin.y
+            + (window_frame.origin.y - unsafe { CGRectGetMinY(close_button_frame) }).abs() / 2.0,
+    );
+
+    let mouse_move_event = unsafe {
+        CGEvent::new_mouse_event(
+            None,
+            CGEventType::MouseMoved,
+            mouse_cursor_point,
+            CGMouseButton::Left,
+        )
+    };
+    let mouse_drag_event = unsafe {
+        CGEvent::new_mouse_event(
+            None,
+            CGEventType::LeftMouseDragged,
+            mouse_cursor_point,
+            CGMouseButton::Left,
+        )
+    };
+    let mouse_down_event = unsafe {
+        CGEvent::new_mouse_event(
+            None,
+            CGEventType::LeftMouseDown,
+            mouse_cursor_point,
+            CGMouseButton::Left,
+        )
+    };
+    let mouse_up_event = unsafe {
+        CGEvent::new_mouse_event(
+            None,
+            CGEventType::LeftMouseUp,
+            mouse_cursor_point,
+            CGMouseButton::Left,
+        )
+    };
+
+    unsafe {
+        CGEvent::set_flags(mouse_move_event.as_deref(), CGEventFlags(0));
+        CGEvent::set_flags(mouse_down_event.as_deref(), CGEventFlags(0));
+        CGEvent::set_flags(mouse_up_event.as_deref(), CGEventFlags(0));
+
+        // Move the mouse into place at the window's toolbar
+        CGEvent::post(CGEventTapLocation::HIDEventTap, mouse_move_event.as_deref());
+        // Mouse down to set up the drag
+        CGEvent::post(CGEventTapLocation::HIDEventTap, mouse_down_event.as_deref());
+        // Drag event to grab hold of the window
+        CGEvent::post(CGEventTapLocation::HIDEventTap, mouse_drag_event.as_deref());
+    }
+
+    // cast is safe as space is in range [1, 16]
+    let hot_key: c_ushort = 118 + space as c_ushort - 1;
+
+    let mut flags: c_uint = 0;
+    let mut key_code: c_ushort = 0;
+    let error = unsafe {
+        private::CGSGetSymbolicHotKeyValue(hot_key, std::ptr::null_mut(), &mut key_code, &mut flags)
+    };
+    if error != CGError::Success {
+        return Err(Error::CGError(error));
+    }
+
+    unsafe {
+        // If the hotkey is disabled, enable it.
+        if !private::CGSIsSymbolicHotKeyEnabled(hot_key) {
+            if private::CGSSetSymbolicHotKeyEnabled(hot_key, true) != CGError::Success {
+                return Err(Error::CGError(error));
+            }
+        }
+    }
+
+    let opt_keyboard_event = unsafe { CGEvent::new_keyboard_event(None, key_code, true) };
+    unsafe {
+        // cast is safe (uint -> u64)
+        CGEvent::set_flags(opt_keyboard_event.as_deref(), CGEventFlags(flags as u64));
+    }
+
+    let keyboard_event = opt_keyboard_event.unwrap();
+    let event = unsafe { NSEvent::eventWithCGEvent(&keyboard_event) }.unwrap();
+
+    let keyboard_event_up = unsafe { CGEvent::new_keyboard_event(None, event.keyCode(), false) };
+    unsafe {
+        CGEvent::set_flags(keyboard_event_up.as_deref(), CGEventFlags(0));
+
+        // Send the shortcut command to get Mission Control to switch spaces from under the window.
+        CGEvent::post(CGEventTapLocation::HIDEventTap, event.CGEvent().as_deref());
+        CGEvent::post(
+            CGEventTapLocation::HIDEventTap,
+            keyboard_event_up.as_deref(),
+        );
+    }
+
+    unsafe {
+        // Let go of the window.
+        CGEvent::post(CGEventTapLocation::HIDEventTap, mouse_up_event.as_deref());
+    }
+
+    Ok(())
+}
+
+pub(crate) fn get_frontmost_window_origin() -> Result<CGPoint, Error> {
+    let frontmost_window = get_frontmost_window()?;
+    get_ui_element_origin(&frontmost_window)
+}
+
+pub(crate) fn get_frontmost_window_size() -> Result<CGSize, Error> {
+    let frontmost_window = get_frontmost_window()?;
+    get_ui_element_size(&frontmost_window)
+}
+
+pub(crate) fn get_frontmost_window_frame() -> Result<CGRect, Error> {
+    let origin = get_frontmost_window_origin()?;
+    let size = get_frontmost_window_size()?;
+
+    Ok(CGRect { origin, size })
+}
+
+/// Get the frontmost window's close button, then extract its frame.
+fn get_frontmost_window_close_button_frame() -> Result<CGRect, Error> {
+    let window = get_frontmost_window()?;
+
+    let mut ptr_to_close_button: *const CFType = std::ptr::null();
+    let ptr_to_buffer = NonNull::new(&mut ptr_to_close_button).unwrap();
+
+    let close_button_attribute = CFString::from_static_str("AXCloseButton");
+    let error = unsafe { window.copy_attribute_value(&close_button_attribute, ptr_to_buffer) };
+    if error != AXError::Success {
+        return Err(Error::AXError(error));
+    }
+    assert!(!ptr_to_close_button.is_null());
+
+    let close_button_element = ptr_to_close_button.cast::<AXUIElement>().cast_mut();
+    let close_button = unsafe { CFRetained::from_raw(NonNull::new(close_button_element).unwrap()) };
+
+    let origin = get_ui_element_origin(&close_button)?;
+    let size = get_ui_element_size(&close_button)?;
+
+    Ok(CGRect { origin, size })
+}
+
+/// This function returns the "visible frame" [^1] of all the screens.
+///
+/// FIXME: This function relies on the [`visibleFrame()`][vf_doc] API, which
+/// has 2 bugs we need to work around:
+///
+/// 1. It assumes the Dock is on the main display, which in reality depends on
+///    how users arrange their displays and the "Dock position on screen" setting
+///    entry.
+/// 2. For non-main displays, it assumes that they don't have a menu bar, but macOS
+///    puts a menu bar on every display.
+///
+///
+/// [^1]: Visible frame: a rectangle defines the portion of the screen in which it
+///      is currently safe to draw your app’s content.
+///
+/// [vf_doc]: https://developer.apple.com/documentation/AppKit/NSScreen/visibleFrame
+pub(crate) fn list_visible_frame_of_all_screens() -> Result<Vec<CGRect>, Error> {
+    let main_thread_marker = MainThreadMarker::new().ok_or(Error::NotInMainThread)?;
+    let screens = NSScreen::screens(main_thread_marker).to_vec();
+
+    if screens.is_empty() {
+        return Ok(Vec::new());
+    }
+
+    let main_screen = screens.first().expect("screens is not empty");
+
+    let frames = screens
+        .iter()
+        .map(|ns_screen| {
+            // NSScreen is an AppKit API, which uses unflipped coordinate
+            // system, flip it
+            let mut unflipped_frame = ns_screen.visibleFrame();
+            let flipped_frame_origin_y = flip_frame_y(
+                main_screen.frame().size.height,
+                unflipped_frame.size.height,
+                unflipped_frame.origin.y,
+            );
+            unflipped_frame.origin.y = flipped_frame_origin_y;
+
+            unflipped_frame
+        })
+        .collect();
+
+    Ok(frames)
+}
+
+/// Get the Visible frame of the "active screen"[^1].
+///
+///
+/// [^1]: the screen which the frontmost window is on.
+pub(crate) fn get_active_screen_visible_frame() -> Result<CGRect, Error> {
+    let main_thread_marker = MainThreadMarker::new().ok_or(Error::NotInMainThread)?;
+
+    let frontmost_window_frame = get_frontmost_window_frame()?;
+
+    let screens = NSScreen::screens(main_thread_marker)
+        .into_iter()
+        .collect::<Vec<_>>();
+
+    if screens.is_empty() {
+        return Err(Error::NoDisplay);
+    }
+
+    let main_screen_height = screens[0].frame().size.height;
+
+    // AppKit uses Unflipped Coordinate System, but Accessibility APIs use
+    // Flipped Coordinate System, we need to flip the origin of these screens.
+    for screen in screens {
+        let mut screen_frame = screen.frame();
+        let unflipped_y = screen_frame.origin.y;
+        let flipped_y = flip_frame_y(main_screen_height, screen_frame.size.height, unflipped_y);
+        screen_frame.origin.y = flipped_y;
+
+        if intersects(screen_frame, frontmost_window_frame) {
+            let mut visible_frame = screen.visibleFrame();
+            let flipped_y = flip_frame_y(
+                main_screen_height,
+                visible_frame.size.height,
+                visible_frame.origin.y,
+            );
+            visible_frame.origin.y = flipped_y;
+
+            return Ok(visible_frame);
+        }
+    }
+
+    unreachable!()
+}
+
+/// Move the frontmost window's origin to the point specified by `x` and `y`.
+pub fn move_frontmost_window(x: f64, y: f64) -> Result<(), Error> {
+    let frontmost_window = get_frontmost_window()?;
+
+    let mut point = CGPoint::new(x, y);
+    let ptr_to_point = NonNull::new((&mut point as *mut CGPoint).cast::<c_void>()).unwrap();
+    let pos_value = unsafe { AXValue::new(AXValueType::CGPoint, ptr_to_point) }.unwrap();
+    let pos_attr = CFString::from_static_str("AXPosition");
+
+    let error = unsafe { frontmost_window.set_attribute_value(&pos_attr, pos_value.deref()) };
+    if error != AXError::Success {
+        return Err(Error::AXError(error));
+    }
+
+    Ok(())
+}
+
+/// Set the frontmost window's frame to the specified frame - adjust size and
+/// location at the same time.
+pub fn set_frontmost_window_frame(frame: CGRect) -> Result<(), Error> {
+    let frontmost_window = get_frontmost_window()?;
+
+    let mut point = frame.origin;
+    let ptr_to_point = NonNull::new((&mut point as *mut CGPoint).cast::<c_void>()).unwrap();
+    let pos_value = unsafe { AXValue::new(AXValueType::CGPoint, ptr_to_point) }.unwrap();
+    let pos_attr = CFString::from_static_str("AXPosition");
+
+    let error = unsafe { frontmost_window.set_attribute_value(&pos_attr, pos_value.deref()) };
+    if error != AXError::Success {
+        return Err(Error::AXError(error));
+    }
+
+    let mut size = frame.size;
+    let ptr_to_size = NonNull::new((&mut size as *mut CGSize).cast::<c_void>()).unwrap();
+    let size_value = unsafe { AXValue::new(AXValueType::CGSize, ptr_to_size) }.unwrap();
+    let size_attr = CFString::from_static_str("AXSize");
+
+    let error = unsafe { frontmost_window.set_attribute_value(&size_attr, size_value.deref()) };
+    if error != AXError::Success {
+        return Err(Error::AXError(error));
+    }
+
+    Ok(())
+}
+
+pub fn toggle_fullscreen() -> Result<(), Error> {
+    let frontmost_window = get_frontmost_window()?;
+    let fullscreen_attr = CFString::from_static_str("AXFullScreen");
+
+    let mut current_value_ref: *const CFType = std::ptr::null();
+    let error = unsafe {
+        frontmost_window.copy_attribute_value(
+            &fullscreen_attr,
+            NonNull::new(&mut current_value_ref).unwrap(),
+        )
+    };
+
+    // TODO: If the attribute doesn't exist, error won't be Success as well.
+    // Before we handle that, we need to know the error case that will be
+    // returned in that case.
+    if error != AXError::Success {
+        return Err(Error::AXError(error));
+    }
+    assert!(!current_value_ref.is_null());
+
+    let current_value = unsafe {
+        let retained_boolean: CFRetained<CFBoolean> = CFRetained::from_raw(
+            NonNull::new(current_value_ref.cast::<CFBoolean>().cast_mut()).unwrap(),
+        );
+        retained_boolean.as_bool()
+    };
+
+    let new_value = !current_value;
+    let new_value_ref: CFRetained<CFBoolean> = CFBoolean::new(new_value).retain();
+
+    let error =
+        unsafe { frontmost_window.set_attribute_value(&fullscreen_attr, new_value_ref.deref()) };
+
+    if error != AXError::Success {
+        return Err(Error::AXError(error));
+    }
+
+    Ok(())
+}
+
+static LAST_FRAME: LazyLock<Mutex<HashMap<CGWindowID, CGRect>>> =
+    LazyLock::new(|| Mutex::new(HashMap::new()));
+
+pub(crate) fn set_frontmost_window_last_frame(window_id: CGWindowID, frame: CGRect) {
+    let mut map = LAST_FRAME.lock().unwrap();
+    map.insert(window_id, frame);
+}
+
+pub(crate) fn get_frontmost_window_last_frame(window_id: CGWindowID) -> Option<CGRect> {
+    let map = LAST_FRAME.lock().unwrap();
+    map.get(&window_id).cloned()
+}

src-tauri/src/extension/built_in/window_management/backend/private.rs

@@ -0,0 +1,70 @@
+//! Private macOS APIs.
+
+use bitflags::bitflags;
+use objc2_application_services::AXError;
+use objc2_application_services::AXUIElement;
+use objc2_core_foundation::CFArray;
+use objc2_core_graphics::CGError;
+use objc2_core_graphics::CGWindowID;
+use std::ffi::c_int;
+use std::ffi::c_uint;
+use std::ffi::c_ushort;
+
+pub(crate) type CGSConnectionID = u32;
+pub(crate) type CGSSpaceID = c_int;
+
+bitflags! {
+    #[derive(Debug, Copy, Clone, PartialEq, Eq)]
+    #[repr(transparent)]
+    pub struct CGSSpaceMask: c_int {
+        const INCLUDE_CURRENT = 1 << 0;
+        const INCLUDE_OTHERS  = 1 << 1;
+
+        const INCLUDE_USER    = 1 << 2;
+        const INCLUDE_OS      = 1 << 3;
+
+        const VISIBLE         = 1 << 16;
+
+        const CURRENT_SPACES = Self::INCLUDE_USER.bits() | Self::INCLUDE_CURRENT.bits();
+        const OTHER_SPACES = Self::INCLUDE_USER.bits() | Self::INCLUDE_OTHERS.bits();
+        const ALL_SPACES =
+            Self::INCLUDE_USER.bits() | Self::INCLUDE_OTHERS.bits() | Self::INCLUDE_CURRENT.bits();
+
+        const ALL_VISIBLE_SPACES = Self::ALL_SPACES.bits() | Self::VISIBLE.bits();
+
+        const CURRENT_OS_SPACES = Self::INCLUDE_OS.bits() | Self::INCLUDE_CURRENT.bits();
+        const OTHER_OS_SPACES = Self::INCLUDE_OS.bits() | Self::INCLUDE_OTHERS.bits();
+        const ALL_OS_SPACES =
+            Self::INCLUDE_OS.bits() | Self::INCLUDE_OTHERS.bits() | Self::INCLUDE_CURRENT.bits();
+    }
+}
+
+unsafe extern "C" {
+    /// Extract `window_id` from an AXUIElement.
+    pub(crate) fn _AXUIElementGetWindow(
+        elem: *mut AXUIElement,
+        window_id: *mut CGWindowID,
+    ) -> AXError;
+
+    /// Connect to the WindowServer and get a connection descriptor.
+    pub(crate) fn CGSMainConnectionID() -> CGSConnectionID;
+
+    /// It returns a CFArray of dictionaries. Each dictionary contains information
+    /// about a display, including a list of all the spaces (CGSSpaceID) on that display.
+    pub(crate) fn CGSCopyManagedDisplaySpaces(cid: CGSConnectionID) -> *mut CFArray;
+
+    /// Gets the ID of the space currently visible to the user.
+    pub(crate) fn CGSGetActiveSpace(cid: CGSConnectionID) -> CGSSpaceID;
+
+    /// Returns the values the symbolic hot key represented by the given UID is configured with.
+    pub(crate) fn CGSGetSymbolicHotKeyValue(
+        hotKey: c_ushort,
+        outKeyEquivalent: *mut c_ushort,
+        outVirtualKeyCode: *mut c_ushort,
+        outModifiers: *mut c_uint,
+    ) -> CGError;
+    /// Returns whether the symbolic hot key represented by the given UID is enabled.
+    pub(crate) fn CGSIsSymbolicHotKeyEnabled(hotKey: c_ushort) -> bool;
+    /// Sets whether the symbolic hot key represented by the given UID is enabled.
+    pub(crate) fn CGSSetSymbolicHotKeyEnabled(hotKey: c_ushort, isEnabled: bool) -> CGError;
+}

src-tauri/src/extension/built_in/window_management/error.rs

@@ -0,0 +1,25 @@
+use objc2_application_services::AXError;
+use objc2_core_graphics::CGError;
+use thiserror::Error;
+
+#[derive(Debug, Error)]
+pub enum Error {
+    /// Cannot find the focused window.
+    #[error("Cannot find the focused window.")]
+    CannotFindFocusWindow,
+    /// Error code from the macOS Accessibility APIs.
+    #[error("Error code from the macOS Accessibility APIs: {0:?}")]
+    AXError(AXError),
+    /// Function should be in called from the main thread, but it is not.
+    #[error("Function should be in called from the main thread, but it is not.")]
+    NotInMainThread,
+    /// No monitor detected.
+    #[error("No monitor detected.")]
+    NoDisplay,
+    /// Can only handle 16 Workspaces at most.
+    #[error("libwmgr can only handle 16 Workspaces at most.")]
+    TooManyWorkspace,
+    /// Error code from the macOS Core Graphics APIs.
+    #[error("Error code from the macOS Core Graphics APIs: {0:?}")]
+    CGError(CGError),
+}

src-tauri/src/extension/built_in/window_management/mod.rs

@@ -0,0 +1,973 @@
+pub(crate) mod actions;
+mod backend;
+mod error;
+pub(crate) mod on_opened;
+pub(crate) mod search_source;
+
+use crate::common::document::open;
+use crate::extension::Extension;
+use actions::Action;
+use backend::get_active_screen_visible_frame;
+use backend::get_frontmost_window_frame;
+use backend::get_frontmost_window_id;
+use backend::get_frontmost_window_last_frame;
+use backend::get_next_workspace_logical_id;
+use backend::get_previous_workspace_logical_id;
+use backend::list_visible_frame_of_all_screens;
+use backend::move_frontmost_window;
+use backend::move_frontmost_window_to_workspace;
+use backend::set_frontmost_window_frame;
+use backend::set_frontmost_window_last_frame;
+use backend::toggle_fullscreen;
+use error::Error;
+use objc2_core_foundation::{CGPoint, CGRect, CGSize};
+use oneshot::channel as oneshot_channel;
+use tauri::AppHandle;
+use tauri::async_runtime;
+use tauri_plugin_global_shortcut::GlobalShortcutExt;
+use tauri_plugin_global_shortcut::ShortcutState;
+
+pub(crate) const EXTENSION_ID: &str = "Window Management";
+
+/// JSON file for this extension.
+pub(crate) const PLUGIN_JSON_FILE: &str = include_str!("./plugin.json");
+
+pub(crate) fn perform_action_on_main_thread(
+    tauri_app_handle: &AppHandle,
+    action: Action,
+) -> Result<(), String> {
+    let (tx, rx) = oneshot_channel();
+
+    tauri_app_handle
+        .run_on_main_thread(move || {
+            let res = perform_action(action).map_err(|e| e.to_string());
+            tx.send(res)
+                .expect("oneshot channel receiver unexpectedly dropped");
+        })
+        .expect("tauri internal bug, channel receiver dropped");
+
+    rx.recv()
+        .expect("oneshot channel sender unexpectedly dropped before sending function return value")
+}
+
+/// Perform this action to the focused window.
+fn perform_action(action: Action) -> Result<(), Error> {
+    let visible_frame = get_active_screen_visible_frame()?;
+    let frontmost_window_id = get_frontmost_window_id()?;
+    let frontmost_window_frame = get_frontmost_window_frame()?;
+
+    set_frontmost_window_last_frame(frontmost_window_id, frontmost_window_frame);
+
+    match action {
+        Action::TopHalf => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x,
+                y: visible_frame.origin.y,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width,
+                height: visible_frame.size.height / 2.0,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::BottomHalf => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x,
+                y: visible_frame.origin.y + visible_frame.size.height / 2.0,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width,
+                height: visible_frame.size.height / 2.0,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::LeftHalf => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x,
+                y: visible_frame.origin.y,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width / 2.0,
+                height: visible_frame.size.height,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::RightHalf => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x + visible_frame.size.width / 2.0,
+                y: visible_frame.origin.y,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width / 2.0,
+                height: visible_frame.size.height,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::CenterHalf => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x + visible_frame.size.width / 4.0,
+                y: visible_frame.origin.y,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width / 2.0,
+                height: visible_frame.size.height,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::TopLeftQuarter => {
+            let origin = visible_frame.origin;
+            let size = CGSize {
+                width: visible_frame.size.width / 2.0,
+                height: visible_frame.size.height / 2.0,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::TopRightQuarter => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x + visible_frame.size.width / 2.0,
+                y: visible_frame.origin.y,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width / 2.0,
+                height: visible_frame.size.height / 2.0,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::BottomLeftQuarter => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x,
+                y: visible_frame.origin.y + visible_frame.size.height / 2.0,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width / 2.0,
+                height: visible_frame.size.height / 2.0,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::BottomRightQuarter => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x + visible_frame.size.width / 2.0,
+                y: visible_frame.origin.y + visible_frame.size.height / 2.0,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width / 2.0,
+                height: visible_frame.size.height / 2.0,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::TopLeftSixth => {
+            let origin = visible_frame.origin;
+            let size = CGSize {
+                width: visible_frame.size.width / 3.0,
+                height: visible_frame.size.height / 2.0,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::TopCenterSixth => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x + visible_frame.size.width / 3.0,
+                y: visible_frame.origin.y,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width / 3.0,
+                height: visible_frame.size.height / 2.0,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::TopRightSixth => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x + visible_frame.size.width * 2.0 / 3.0,
+                y: visible_frame.origin.y,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width / 3.0,
+                height: visible_frame.size.height / 2.0,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::BottomLeftSixth => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x,
+                y: visible_frame.origin.y + visible_frame.size.height / 2.0,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width / 3.0,
+                height: visible_frame.size.height / 2.0,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::BottomCenterSixth => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x + visible_frame.size.width / 3.0,
+                y: visible_frame.origin.y + visible_frame.size.height / 2.0,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width / 3.0,
+                height: visible_frame.size.height / 2.0,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::BottomRightSixth => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x + visible_frame.size.width * 2.0 / 3.0,
+                y: visible_frame.origin.y + visible_frame.size.height / 2.0,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width / 3.0,
+                height: visible_frame.size.height / 2.0,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::TopThird => {
+            let origin = visible_frame.origin;
+            let size = CGSize {
+                width: visible_frame.size.width,
+                height: visible_frame.size.height / 3.0,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::MiddleThird => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x,
+                y: visible_frame.origin.y + visible_frame.size.height / 3.0,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width,
+                height: visible_frame.size.height / 3.0,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::BottomThird => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x,
+                y: visible_frame.origin.y + visible_frame.size.height * 2.0 / 3.0,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width,
+                height: visible_frame.size.height / 3.0,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::Center => {
+            let window_size = frontmost_window_frame.size;
+            let origin = CGPoint {
+                x: visible_frame.origin.x + (visible_frame.size.width - window_size.width) / 2.0,
+                y: visible_frame.origin.y + (visible_frame.size.height - window_size.height) / 2.0,
+            };
+            move_frontmost_window(origin.x, origin.y)
+        }
+        Action::FirstFourth => {
+            let origin = visible_frame.origin;
+            let size = CGSize {
+                width: visible_frame.size.width / 4.0,
+                height: visible_frame.size.height,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::SecondFourth => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x + visible_frame.size.width / 4.0,
+                y: visible_frame.origin.y,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width / 4.0,
+                height: visible_frame.size.height,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::ThirdFourth => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x + visible_frame.size.width * 2.0 / 4.0,
+                y: visible_frame.origin.y,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width / 4.0,
+                height: visible_frame.size.height,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::LastFourth => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x + visible_frame.size.width * 3.0 / 4.0,
+                y: visible_frame.origin.y,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width / 4.0,
+                height: visible_frame.size.height,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::FirstThird => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x,
+                y: visible_frame.origin.y,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width / 3.0,
+                height: visible_frame.size.height,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::CenterThird => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x + visible_frame.size.width / 3.0,
+                y: visible_frame.origin.y,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width / 3.0,
+                height: visible_frame.size.height,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::LastThird => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x + visible_frame.size.width * 2.0 / 3.0,
+                y: visible_frame.origin.y,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width / 3.0,
+                height: visible_frame.size.height,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::FirstTwoThirds => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x,
+                y: visible_frame.origin.y,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width * 2.0 / 3.0,
+                height: visible_frame.size.height,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::CenterTwoThirds => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x + visible_frame.size.width / 6.0,
+                y: visible_frame.origin.y,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width * 2.0 / 3.0,
+                height: visible_frame.size.height,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::LastTwoThirds => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x + visible_frame.size.width / 3.0,
+                y: visible_frame.origin.y,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width * 2.0 / 3.0,
+                height: visible_frame.size.height,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::FirstThreeFourths => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x,
+                y: visible_frame.origin.y,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width * 3.0 / 4.0,
+                height: visible_frame.size.height,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::CenterThreeFourths => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x + visible_frame.size.width / 8.0,
+                y: visible_frame.origin.y,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width * 3.0 / 4.0,
+                height: visible_frame.size.height,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::LastThreeFourths => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x + visible_frame.size.width / 4.0,
+                y: visible_frame.origin.y,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width * 3.0 / 4.0,
+                height: visible_frame.size.height,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::TopThreeFourths => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x,
+                y: visible_frame.origin.y,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width,
+                height: visible_frame.size.height * 3.0 / 4.0,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::BottomThreeFourths => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x,
+                y: visible_frame.origin.y + visible_frame.size.height / 4.0,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width,
+                height: visible_frame.size.height * 3.0 / 4.0,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::TopTwoThirds => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x,
+                y: visible_frame.origin.y,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width,
+                height: visible_frame.size.height * 2.0 / 3.0,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::BottomTwoThirds => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x,
+                y: visible_frame.origin.y + visible_frame.size.height / 3.0,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width,
+                height: visible_frame.size.height * 2.0 / 3.0,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+
+        Action::TopCenterTwoThirds => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x + visible_frame.size.width / 6.0,
+                y: visible_frame.origin.y,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width * 2.0 / 3.0,
+                height: visible_frame.size.height * 2.0 / 3.0,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::TopFirstFourth => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x,
+                y: visible_frame.origin.y,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width,
+                height: visible_frame.size.height / 4.0,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::TopSecondFourth => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x,
+                y: visible_frame.origin.y + visible_frame.size.height / 4.0,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width,
+                height: visible_frame.size.height / 4.0,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::TopThirdFourth => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x,
+                y: visible_frame.origin.y + visible_frame.size.height * 2.0 / 4.0,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width,
+                height: visible_frame.size.height / 4.0,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::TopLastFourth => {
+            let origin = CGPoint {
+                x: visible_frame.origin.x,
+                y: visible_frame.origin.y + visible_frame.size.height * 3.0 / 4.0,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width,
+                height: visible_frame.size.height / 4.0,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::MakeLarger => {
+            let window_origin = frontmost_window_frame.origin;
+            let window_size = frontmost_window_frame.size;
+            let delta_width = 20_f64;
+            let delta_height = window_size.height / window_size.width * delta_width;
+            let delta_origin_x = delta_width / 2.0;
+            let delta_origin_y = delta_height / 2.0;
+
+            let new_width = {
+                let possible_value = window_size.width + delta_width;
+                if possible_value > visible_frame.size.width {
+                    visible_frame.size.width
+                } else {
+                    possible_value
+                }
+            };
+            let new_height = {
+                let possible_value = window_size.height + delta_height;
+                if possible_value > visible_frame.size.height {
+                    visible_frame.size.height
+                } else {
+                    possible_value
+                }
+            };
+
+            let new_origin_x = {
+                let possible_value = window_origin.x - delta_origin_x;
+                if possible_value < visible_frame.origin.x {
+                    visible_frame.origin.x
+                } else {
+                    possible_value
+                }
+            };
+            let new_origin_y = {
+                let possible_value = window_origin.y - delta_origin_y;
+                if possible_value < visible_frame.origin.y {
+                    visible_frame.origin.y
+                } else {
+                    possible_value
+                }
+            };
+
+            let origin = CGPoint {
+                x: new_origin_x,
+                y: new_origin_y,
+            };
+            let size = CGSize {
+                width: new_width,
+                height: new_height,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::MakeSmaller => {
+            let window_origin = frontmost_window_frame.origin;
+            let window_size = frontmost_window_frame.size;
+
+            let delta_width = 20_f64;
+            let delta_height = window_size.height / window_size.width * delta_width;
+
+            let delta_origin_x = delta_width / 2.0;
+            let delta_origin_y = delta_height / 2.0;
+
+            let origin = CGPoint {
+                x: window_origin.x + delta_origin_x,
+                y: window_origin.y + delta_origin_y,
+            };
+            let size = CGSize {
+                width: window_size.width - delta_width,
+                height: window_size.height - delta_height,
+            };
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::AlmostMaximize => {
+            let new_size = CGSize {
+                width: visible_frame.size.width * 0.9,
+                height: visible_frame.size.height * 0.9,
+            };
+            let new_origin = CGPoint {
+                x: visible_frame.origin.x + (visible_frame.size.width * 0.1),
+                y: visible_frame.origin.y + (visible_frame.size.height * 0.1),
+            };
+            let new_frame = CGRect {
+                origin: new_origin,
+                size: new_size,
+            };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::Maximize => {
+            let new_frame = CGRect {
+                origin: visible_frame.origin,
+                size: visible_frame.size,
+            };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::MaximizeWidth => {
+            let window_origin = frontmost_window_frame.origin;
+            let window_size = frontmost_window_frame.size;
+            let origin = CGPoint {
+                x: visible_frame.origin.x,
+                y: window_origin.y,
+            };
+            let size = CGSize {
+                width: visible_frame.size.width,
+                height: window_size.height,
+            };
+
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::MaximizeHeight => {
+            let window_origin = frontmost_window_frame.origin;
+            let window_size = frontmost_window_frame.size;
+            let origin = CGPoint {
+                x: window_origin.x,
+                y: visible_frame.origin.y,
+            };
+            let size = CGSize {
+                width: window_size.width,
+                height: visible_frame.size.height,
+            };
+
+            let new_frame = CGRect { origin, size };
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::MoveUp => {
+            let window_origin = frontmost_window_frame.origin;
+            let new_y = (window_origin.y - 10.0).max(visible_frame.origin.y);
+            move_frontmost_window(window_origin.x, new_y)
+        }
+        Action::MoveDown => {
+            let window_origin = frontmost_window_frame.origin;
+            let window_size = frontmost_window_frame.size;
+            let new_y = (window_origin.y + 10.0)
+                .min(visible_frame.origin.y + visible_frame.size.height - window_size.height);
+            move_frontmost_window(window_origin.x, new_y)
+        }
+        Action::MoveLeft => {
+            let window_origin = frontmost_window_frame.origin;
+            let new_x = (window_origin.x - 10.0).max(visible_frame.origin.x);
+            move_frontmost_window(new_x, window_origin.y)
+        }
+        Action::MoveRight => {
+            let window_origin = frontmost_window_frame.origin;
+            let window_size = frontmost_window_frame.size;
+            let new_x = (window_origin.x + 10.0)
+                .min(visible_frame.origin.x + visible_frame.size.width - window_size.width);
+            move_frontmost_window(new_x, window_origin.y)
+        }
+        Action::NextDesktop => {
+            let Some(next_workspace_logical_id) = get_next_workspace_logical_id() else {
+                // nothing to do
+                return Ok(());
+            };
+
+            move_frontmost_window_to_workspace(next_workspace_logical_id)
+        }
+        Action::PreviousDesktop => {
+            let Some(previous_workspace_logical_id) = get_previous_workspace_logical_id() else {
+                // nothing to do
+                return Ok(());
+            };
+
+            // Now let's switch the workspace
+            move_frontmost_window_to_workspace(previous_workspace_logical_id)
+        }
+        Action::NextDisplay => {
+            const TOO_MANY_MONITORS: &str = "I don't think you can have so many monitors";
+
+            let frames = list_visible_frame_of_all_screens()?;
+            let n_frames = frames.len();
+            if n_frames == 0 {
+                return Err(Error::NoDisplay);
+            }
+            if n_frames == 1 {
+                return Ok(());
+            }
+
+            let index = frames
+                .iter()
+                .position(|fr| fr == &visible_frame)
+                .expect("active screen should be in the list");
+            let new_index: usize = {
+                let index_i32: i32 = index.try_into().expect(TOO_MANY_MONITORS);
+                let index_i32_plus_one = index_i32.checked_add(1).expect(TOO_MANY_MONITORS);
+                let final_value = index_i32_plus_one % n_frames as i32;
+
+                final_value
+                    .try_into()
+                    .expect("final value should be positive")
+            };
+
+            let new_frame = frames[new_index];
+
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::PreviousDisplay => {
+            const TOO_MANY_MONITORS: &str = "I don't think you can have so many monitors";
+
+            let frames = list_visible_frame_of_all_screens()?;
+            let n_frames = frames.len();
+            if n_frames == 0 {
+                return Err(Error::NoDisplay);
+            }
+            if n_frames == 1 {
+                return Ok(());
+            }
+            let index = frames
+                .iter()
+                .position(|fr| fr == &visible_frame)
+                .expect("active screen should be in the list");
+            let new_index: usize = {
+                let index_i32: i32 = index.try_into().expect(TOO_MANY_MONITORS);
+                let index_i32_minus_one = index_i32 - 1;
+                let n_frames_i32: i32 = n_frames.try_into().expect(TOO_MANY_MONITORS);
+                let final_value = (index_i32_minus_one + n_frames_i32) % n_frames_i32;
+
+                final_value
+                    .try_into()
+                    .expect("final value should be positive")
+            };
+
+            let new_frame = frames[new_index];
+
+            set_frontmost_window_frame(new_frame)
+        }
+        Action::Restore => {
+            let Some(previous_frame) = get_frontmost_window_last_frame(frontmost_window_id) else {
+                // Previous frame found, Nothing to do
+                return Ok(());
+            };
+
+            set_frontmost_window_frame(previous_frame)
+        }
+        Action::ToggleFullscreen => toggle_fullscreen(),
+    }
+}
+
+pub(crate) fn set_up_commands_hotkeys(
+    tauri_app_handle: &AppHandle,
+    wm_extension: &Extension,
+) -> Result<(), String> {
+    for command in wm_extension
+        .commands
+        .as_ref()
+        .expect("Window Management extension has commands")
+        .iter()
+        .filter(|cmd| cmd.enabled)
+    {
+        if let Some(ref hotkey) = command.hotkey {
+            let on_opened = on_opened::on_opened(&command.id);
+
+            let extension_id_clone = command.id.clone();
+
+            tauri_app_handle
+                .global_shortcut()
+                .on_shortcut(hotkey.as_str(), move |tauri_app_handle, _hotkey, event| {
+                    let on_opened_clone = on_opened.clone();
+                    let extension_id_clone = extension_id_clone.clone();
+                    let app_handle_clone = tauri_app_handle.clone();
+
+                    if event.state() == ShortcutState::Pressed {
+                        async_runtime::spawn(async move {
+                            let result = open(app_handle_clone, on_opened_clone, None).await;
+                            if let Err(msg) = result {
+                                log::warn!(
+                                    "failed to open extension [{}], error [{}]",
+                                    extension_id_clone,
+                                    msg
+                                );
+                            }
+                        });
+                    }
+                })
+                .map_err(|e| e.to_string())?;
+        }
+    }
+
+    Ok(())
+}
+
+pub(crate) fn unset_commands_hotkeys(
+    tauri_app_handle: &AppHandle,
+    wm_extension: &Extension,
+) -> Result<(), String> {
+    for command in wm_extension
+        .commands
+        .as_ref()
+        .expect("Window Management extension has commands")
+        .iter()
+        .filter(|cmd| cmd.enabled)
+    {
+        if let Some(ref hotkey) = command.hotkey {
+            tauri_app_handle
+                .global_shortcut()
+                .unregister(hotkey.as_str())
+                .map_err(|e| e.to_string())?;
+        }
+    }
+
+    Ok(())
+}
+
+pub(crate) fn set_up_command_hotkey(
+    tauri_app_handle: &AppHandle,
+    wm_extension: &Extension,
+    command_id: &str,
+) -> Result<(), String> {
+    let commands = wm_extension
+        .commands
+        .as_ref()
+        .expect("Window Management has commands");
+    let opt_command = commands.iter().find(|ext| ext.id == command_id);
+
+    let Some(command) = opt_command else {
+        panic!("Window Management command does not exist {}", command_id);
+    };
+
+    if let Some(ref hotkey) = command.hotkey {
+        let on_opened = on_opened::on_opened(&command.id);
+
+        let extension_id_clone = command.id.clone();
+
+        tauri_app_handle
+            .global_shortcut()
+            .on_shortcut(hotkey.as_str(), move |tauri_app_handle, _hotkey, event| {
+                let on_opened_clone = on_opened.clone();
+                let extension_id_clone = extension_id_clone.clone();
+                let app_handle_clone = tauri_app_handle.clone();
+
+                if event.state() == ShortcutState::Pressed {
+                    async_runtime::spawn(async move {
+                        let result = open(app_handle_clone, on_opened_clone, None).await;
+                        if let Err(msg) = result {
+                            log::warn!(
+                                "failed to open extension [{}], error [{}]",
+                                extension_id_clone,
+                                msg
+                            );
+                        }
+                    });
+                }
+            })
+            .map_err(|e| e.to_string())?;
+    }
+
+    Ok(())
+}
+
+pub(crate) fn unset_command_hotkey(
+    tauri_app_handle: &AppHandle,
+    wm_extension: &Extension,
+    command_id: &str,
+) -> Result<(), String> {
+    let commands = wm_extension
+        .commands
+        .as_ref()
+        .expect("Window Management has commands");
+    let opt_command = commands.iter().find(|ext| ext.id == command_id);
+
+    let Some(command) = opt_command else {
+        panic!("Window Management command does not exist {}", command_id);
+    };
+
+    if let Some(ref hotkey) = command.hotkey {
+        tauri_app_handle
+            .global_shortcut()
+            .unregister(hotkey.as_str())
+            .map_err(|e| e.to_string())?;
+    }
+
+    Ok(())
+}
+
+pub(crate) fn register_command_hotkey(
+    tauri_app_handle: &AppHandle,
+    command_id: &str,
+    hotkey: &str,
+) -> Result<(), String> {
+    let on_opened = on_opened::on_opened(&command_id);
+
+    let extension_id_clone = command_id.to_string();
+
+    tauri_app_handle
+        .global_shortcut()
+        .on_shortcut(hotkey, move |tauri_app_handle, _hotkey, event| {
+            let on_opened_clone = on_opened.clone();
+            let extension_id_clone = extension_id_clone.clone();
+            let app_handle_clone = tauri_app_handle.clone();
+
+            if event.state() == ShortcutState::Pressed {
+                async_runtime::spawn(async move {
+                    let result = open(app_handle_clone, on_opened_clone, None).await;
+                    if let Err(msg) = result {
+                        log::warn!(
+                            "failed to open extension [{}], error [{}]",
+                            extension_id_clone,
+                            msg
+                        );
+                    }
+                });
+            }
+        })
+        .map_err(|e| e.to_string())?;
+
+    Ok(())
+}
+
+pub(crate) fn unregister_command_hotkey(
+    tauri_app_handle: &AppHandle,
+    wm_extension: &Extension,
+    command_id: &str,
+) -> Result<(), String> {
+    let commands = wm_extension
+        .commands
+        .as_ref()
+        .expect("Window Management has commands");
+    let opt_command = commands.iter().find(|ext| ext.id == command_id);
+
+    let Some(command) = opt_command else {
+        panic!("Window Management command does not exist {}", command_id);
+    };
+
+    let Some(ref hotkey) = command.hotkey else {
+        return Ok(());
+    };
+
+    tauri_app_handle
+        .global_shortcut()
+        .unregister(hotkey.as_str())
+        .map_err(|e| e.to_string())?;
+
+    Ok(())
+}

src-tauri/src/extension/built_in/window_management/on_opened.rs

@@ -0,0 +1,10 @@
+use super::actions::Action;
+use crate::common::document::OnOpened;
+use serde_plain;
+
+pub(crate) fn on_opened(command_id: &str) -> OnOpened {
+    let action: Action = serde_plain::from_str(command_id).unwrap_or_else(|_| {
+        panic!("Window Management commands IDs should be valid for `enum Action`, someone corrupts the JSON file");
+    });
+    OnOpened::WindowManagementAction { action }
+}

src-tauri/src/extension/built_in/window_management/plugin.json

@@ -0,0 +1,415 @@
+{
+  "id": "Window Management",
+  "name": "Window Management",
+  "platforms": [
+    "macos"
+  ],
+  "description": "Resize, reorganize and move your focused window effortlessly",
+  "icon": "font_a-Windowmanagement",
+  "type": "extension",
+  "category": "Utilities",
+  "tags": [
+    "Productivity"
+  ],
+  "commands": [
+    {
+      "id": "TopHalf",
+      "name": "Top Half",
+      "description": "Move the focused window to fill left half of the screen.",
+      "icon": "font_a-TopHalf",
+      "type": "command"
+    },
+    {
+      "id": "BottomHalf",
+      "name": "Bottom Half",
+      "description": "Move the focused window to fill bottom half of the screen.",
+      "icon": "font_a-BottomHalf",
+      "type": "command"
+    },
+    {
+      "id": "LeftHalf",
+      "name": "Left Half",
+      "description": "Move the focused window to fill left half of the screen.",
+      "icon": "font_a-LeftHalf",
+      "type": "command"
+    },
+    {
+      "id": "RightHalf",
+      "name": "Right Half",
+      "description": "Move the focused window to fill right half of the screen.",
+      "icon": "font_a-RightHalf",
+      "type": "command"
+    },
+    {
+      "id": "CenterHalf",
+      "name": "Center Half",
+      "description": "Move the focused window to fill center half of the screen.",
+      "icon": "font_a-CenterHalf",
+      "type": "command"
+    },
+    {
+      "id": "Maximize",
+      "name": "Maximize",
+      "description": "Maximize the focused window to fit the screen.",
+      "icon": "font_Maximize",
+      "type": "command"
+    },
+    {
+      "id": "TopLeftQuarter",
+      "name": "Top Left Quarter",
+      "description": "Resize the focused window to the top left quarter of the screen.",
+      "icon": "font_a-TopLeftQuarter",
+      "type": "command"
+    },
+    {
+      "id": "TopRightQuarter",
+      "name": "Top Right Quarter",
+      "description": "Resize the focused window to the top right quarter of the screen.",
+      "icon": "font_a-TopRightQuarter",
+      "type": "command"
+    },
+    {
+      "id": "BottomLeftQuarter",
+      "name": "Bottom Left Quarter",
+      "description": "Resize the focused window to the bottom left quarter of the screen.",
+      "icon": "font_a-BottomLeftQuarter",
+      "type": "command"
+    },
+    {
+      "id": "BottomRightQuarter",
+      "name": "Bottom Right Quarter",
+      "description": "Resize the focused window to the bottom right quarter of the screen.",
+      "icon": "font_a-BottomRightQuarter",
+      "type": "command"
+    },
+    {
+      "id": "TopLeftSixth",
+      "name": "Top Left Sixth",
+      "description": "Resize the focused window to the top left sixth of the screen.",
+      "icon": "font_a-TopLeftSixth",
+      "type": "command"
+    },
+    {
+      "id": "TopCenterSixth",
+      "name": "Top Center Sixth",
+      "description": "Resize the focused window to the top center sixth of the screen.",
+      "icon": "font_a-TopCenterSixth",
+      "type": "command"
+    },
+    {
+      "id": "TopRightSixth",
+      "name": "Top Right Sixth",
+      "description": "Resize the focused window to the top right sixth of the screen.",
+      "icon": "font_a-TopRightSixth",
+      "type": "command"
+    },
+    {
+      "id": "BottomLeftSixth",
+      "name": "Bottom Left Sixth",
+      "description": "Resize the focused window to the bottom left sixth of the screen.",
+      "icon": "font_a-BottomLeftSixth",
+      "type": "command"
+    },
+    {
+      "id": "BottomCenterSixth",
+      "name": "Bottom Center Sixth",
+      "description": "Resize the focused window to the bottom center sixth of the screen.",
+      "icon": "font_a-BottomCenterSixth",
+      "type": "command"
+    },
+    {
+      "id": "BottomRightSixth",
+      "name": "Bottom Right Sixth",
+      "description": "Resize the focused window to the bottom right sixth of the screen.",
+      "icon": "font_a-BottomRightSixth",
+      "type": "command"
+    },
+    {
+      "id": "TopThird",
+      "name": "Top Third",
+      "description": "Resize the focused window to the top third of the screen.",
+      "icon": "font_a-TopThirdFourth",
+      "type": "command"
+    },
+    {
+      "id": "MiddleThird",
+      "name": "Middle Third",
+      "description": "Resize the focused window to the middle third of the screen.",
+      "icon": "font_a-MiddleThird",
+      "type": "command"
+    },
+    {
+      "id": "BottomThird",
+      "name": "Bottom Third",
+      "description": "Resize the focused window to the bottom third of the screen.",
+      "icon": "font_a-BottomThird",
+      "type": "command"
+    },
+    {
+      "id": "Center",
+      "name": "Center",
+      "description": "Center the focused window in the screen.",
+      "icon": "font_Center",
+      "type": "command"
+    },
+    {
+      "id": "FirstFourth",
+      "name": "First Fourth",
+      "description": "Resize the focused window to the first fourth of the screen.",
+      "icon": "font_a-FirstFourth",
+      "type": "command"
+    },
+    {
+      "id": "SecondFourth",
+      "name": "Second Fourth",
+      "description": "Resize the focused window to the second fourth of the screen.",
+      "icon": "font_a-SecondFourth",
+      "type": "command"
+    },
+    {
+      "id": "ThirdFourth",
+      "name": "Third Fourth",
+      "description": "Resize the focused window to the third fourth of the screen.",
+      "icon": "font_a-ThirdFourth",
+      "type": "command"
+    },
+    {
+      "id": "LastFourth",
+      "name": "Last Fourth",
+      "description": "Resize the focused window to the last fourth of the screen.",
+      "icon": "font_a-LastFourth",
+      "type": "command"
+    },
+    {
+      "id": "FirstThird",
+      "name": "First Third",
+      "description": "Resize the focused window to the first third of the screen.",
+      "icon": "font_a-FirstThird",
+      "type": "command"
+    },
+    {
+      "id": "CenterThird",
+      "name": "Center Third",
+      "description": "Resize the focused window to the center third of the screen.",
+      "icon": "font_a-CenterThird",
+      "type": "command"
+    },
+    {
+      "id": "LastThird",
+      "name": "Last Third",
+      "description": "Resize the focused window to the last third of the screen.",
+      "icon": "font_a-LastThird",
+      "type": "command"
+    },
+    {
+      "id": "FirstTwoThirds",
+      "name": "First Two Thirds",
+      "description": "Resize the focused window to the first two thirds of the screen.",
+      "icon": "font_a-FirstTwoThirds",
+      "type": "command"
+    },
+    {
+      "id": "CenterTwoThirds",
+      "name": "Center Two Thirds",
+      "description": "Resize the focused window to the center two thirds of the screen.",
+      "icon": "font_a-CenterTwoThirds",
+      "type": "command"
+    },
+    {
+      "id": "LastTwoThirds",
+      "name": "Last Two Thirds",
+      "description": "Resize the focused window to the last two thirds of the screen.",
+      "icon": "font_a-LastTwoThirds",
+      "type": "command"
+    },
+    {
+      "id": "FirstThreeFourths",
+      "name": "First Three Fourths",
+      "description": "Resize the focused window to the first three fourths of the screen.",
+      "icon": "font_a-FirstThreeFourths",
+      "type": "command"
+    },
+    {
+      "id": "CenterThreeFourths",
+      "name": "Center Three Fourths",
+      "description": "Resize the focused window to the center three fourths of the screen.",
+      "icon": "font_a-CenterThreeFourths",
+      "type": "command"
+    },
+    {
+      "id": "LastThreeFourths",
+      "name": "Last Three Fourths",
+      "description": "Resize the focused window to the last three fourths of the screen.",
+      "icon": "font_a-LastThreeFourths",
+      "type": "command"
+    },
+    {
+      "id": "TopThreeFourths",
+      "name": "Top Three Fourths",
+      "description": "Resize the focused window to the top three fourths of the screen.",
+      "icon": "font_a-TopThreeFourths",
+      "type": "command"
+    },
+    {
+      "id": "BottomThreeFourths",
+      "name": "Bottom Three Fourths",
+      "description": "Resize the focused window to the bottom three fourths of the screen.",
+      "icon": "font_a-BottomThreeFourths",
+      "type": "command"
+    },
+    {
+      "id": "TopTwoThirds",
+      "name": "Top Two Thirds",
+      "description": "Resize the focused window to the top two thirds of the screen.",
+      "icon": "font_a-TopTwoThirds",
+      "type": "command"
+    },
+    {
+      "id": "BottomTwoThirds",
+      "name": "Bottom Two Thirds",
+      "description": "Resize the focused window to the bottom two thirds of the screen.",
+      "icon": "font_a-BottomTwoThirds",
+      "type": "command"
+    },
+    {
+      "id": "TopCenterTwoThirds",
+      "name": "Top Center Two Thirds",
+      "description": "Resize the focused window to the top center two thirds of the screen.",
+      "icon": "font_a-TopCenterTwoThirds",
+      "type": "command"
+    },
+    {
+      "id": "TopFirstFourth",
+      "name": "Top First Fourth",
+      "description": "Resize the focused window to the top first fourth of the screen.",
+      "icon": "font_a-TopFirstFourth",
+      "type": "command"
+    },
+    {
+      "id": "TopSecondFourth",
+      "name": "Top Second Fourth",
+      "description": "Resize the focused window to the top second fourth of the screen.",
+      "icon": "font_a-TopSecondFourth",
+      "type": "command"
+    },
+    {
+      "id": "TopThirdFourth",
+      "name": "Top Third Fourth",
+      "description": "Resize the focused window to the top third fourth of the screen.",
+      "icon": "font_a-TopThirdFourth",
+      "type": "command"
+    },
+    {
+      "id": "TopLastFourth",
+      "name": "Top Last Fourth",
+      "description": "Resize the focused window to the top last fourth of the screen.",
+      "icon": "font_a-TopLastFourth",
+      "type": "command"
+    },
+    {
+      "id": "MakeLarger",
+      "name": "Make Larger",
+      "description": "Increase the focused window until it reaches the screen size.",
+      "icon": "font_a-MakeLarger",
+      "type": "command"
+    },
+    {
+      "id": "MakeSmaller",
+      "name": "Make Smaller",
+      "description": "Decrease the focused window until it reaches its minimal size.",
+      "icon": "font_a-MakeSmaller",
+      "type": "command"
+    },
+    {
+      "id": "AlmostMaximize",
+      "name": "Almost Maximize",
+      "description": "Maximize the focused window to almost fit the screen.",
+      "icon": "font_a-AlmostMaximize",
+      "type": "command"
+    },
+    {
+      "id": "MaximizeWidth",
+      "name": "Maximize Width",
+      "description": "Maximize width of the focused window to fit the screen.",
+      "icon": "font_a-MaximizeWidth",
+      "type": "command"
+    },
+    {
+      "id": "MaximizeHeight",
+      "name": "Maximize Height",
+      "description": "Maximize height of the focused window to fit the screen.",
+      "icon": "font_a-MaximizeHeight",
+      "type": "command"
+    },
+    {
+      "id": "MoveUp",
+      "name": "Move Up",
+      "description": "Move the focused window to the top edge of the screen.",
+      "icon": "font_a-MoveUp",
+      "type": "command"
+    },
+    {
+      "id": "MoveDown",
+      "name": "Move Down",
+      "description": "Move the focused window to the bottom of the screen.",
+      "icon": "font_a-MoveDown",
+      "type": "command"
+    },
+    {
+      "id": "MoveLeft",
+      "name": "Move Left",
+      "description": "Move the focused window to the left edge of the screen.",
+      "icon": "font_a-MoveLeft",
+      "type": "command"
+    },
+    {
+      "id": "MoveRight",
+      "name": "Move Right",
+      "description": "Move the focused window to the right edge of the screen.",
+      "icon": "font_a-MoveRight",
+      "type": "command"
+    },
+    {
+      "id": "NextDesktop",
+      "name": "Next Desktop",
+      "description": "Move the focused window to the next desktop.",
+      "icon": "font_a-NextDesktop",
+      "type": "command"
+    },
+    {
+      "id": "PreviousDesktop",
+      "name": "Previous Desktop",
+      "description": "Move the focused window to the previous desktop.",
+      "icon": "font_a-PreviousDesktop",
+      "type": "command"
+    },
+    {
+      "id": "NextDisplay",
+      "name": "Next Display",
+      "description": "Move the focused window to the next display.",
+      "icon": "font_a-NextDisplay",
+      "type": "command"
+    },
+    {
+      "id": "PreviousDisplay",
+      "name": "Previous Display",
+      "description": "Move the focused window to the previous display.",
+      "icon": "font_a-PreviousDisplay",
+      "type": "command"
+    },
+    {
+      "id": "Restore",
+      "name": "Restore",
+      "description": "Restore the focused window to its last position.",
+      "icon": "font_Restore",
+      "type": "command"
+    },
+    {
+      "id": "ToggleFullscreen",
+      "name": "Toggle Fullscreen",
+      "description": "Toggle fullscreen mode.",
+      "icon": "font_a-ToggleFullscreen",
+      "type": "command"
+    }
+  ]
+}

src-tauri/src/extension/built_in/window_management/search_source.rs

@@ -0,0 +1,127 @@
+use super::EXTENSION_ID;
+use crate::common::document::{DataSourceReference, Document};
+use crate::common::{
+    error::SearchError,
+    search::{QueryResponse, QuerySource, SearchQuery},
+    traits::SearchSource,
+};
+use crate::extension::built_in::{get_built_in_extension_directory, load_extension_from_json_file};
+use crate::extension::{ExtensionType, LOCAL_QUERY_SOURCE_TYPE, calculate_text_similarity};
+use async_trait::async_trait;
+use hostname;
+use tauri::AppHandle;
+
+/// A search source to allow users to search WM actions.
+pub(crate) struct WindowManagementSearchSource;
+
+#[async_trait]
+impl SearchSource for WindowManagementSearchSource {
+    fn get_type(&self) -> QuerySource {
+        QuerySource {
+            r#type: LOCAL_QUERY_SOURCE_TYPE.into(),
+            name: hostname::get()
+                .unwrap_or(EXTENSION_ID.into())
+                .to_string_lossy()
+                .into(),
+            id: EXTENSION_ID.into(),
+        }
+    }
+
+    async fn search(
+        &self,
+        tauri_app_handle: AppHandle,
+        query: SearchQuery,
+    ) -> Result<QueryResponse, SearchError> {
+        let Some(query_string) = query.query_strings.get("query") else {
+            return Ok(QueryResponse {
+                source: self.get_type(),
+                hits: Vec::new(),
+                total_hits: 0,
+            });
+        };
+        let from = usize::try_from(query.from).expect("from too big");
+        let size = usize::try_from(query.size).expect("size too big");
+
+        let query_string = query_string.trim();
+        if query_string.is_empty() {
+            return Ok(QueryResponse {
+                source: self.get_type(),
+                hits: Vec::new(),
+                total_hits: 0,
+            });
+        }
+        let query_string_lowercase = query_string.to_lowercase();
+
+        let extension = load_extension_from_json_file(
+            &get_built_in_extension_directory(&tauri_app_handle),
+            super::EXTENSION_ID,
+        )
+        .map_err(SearchError::InternalError)?;
+        let commands = extension.commands.expect("this extension has commands");
+
+        let mut hits: Vec<(Document, f64)> = Vec::new();
+
+        // We know they are all commands
+        let command_type_string = ExtensionType::Command.to_string();
+        for command in commands.iter().filter(|ext| ext.enabled) {
+            let score = {
+                let mut score = 0_f64;
+
+                if let Some(name_score) =
+                    calculate_text_similarity(&query_string_lowercase, &command.name.to_lowercase())
+                {
+                    score += name_score;
+                }
+
+                if let Some(ref alias) = command.alias {
+                    if let Some(alias_score) =
+                        calculate_text_similarity(&query_string_lowercase, &alias.to_lowercase())
+                    {
+                        score += alias_score;
+                    }
+                }
+
+                score
+            };
+
+            if score > 0.0 {
+                let on_opened = super::on_opened::on_opened(&command.id);
+                let url = on_opened.url();
+
+                let document = Document {
+                    id: command.id.clone(),
+                    title: Some(command.name.clone()),
+                    icon: Some(command.icon.clone()),
+                    on_opened: Some(on_opened),
+                    url: Some(url),
+                    category: Some(command_type_string.clone()),
+                    source: Some(DataSourceReference {
+                        id: Some(command_type_string.clone()),
+                        name: Some(command_type_string.clone()),
+                        icon: None,
+                        r#type: Some(command_type_string.clone()),
+                    }),
+
+                    ..Default::default()
+                };
+
+                hits.push((document, score));
+            }
+        }
+
+        hits.sort_by(|(_, score_a), (_, score_b)| {
+            score_a
+                .partial_cmp(&score_b)
+                .expect("expect no NAN/INFINITY/...")
+        });
+
+        let total_hits = hits.len();
+        let from_size_applied = hits.into_iter().skip(from).take(size).collect();
+
+        Ok(QueryResponse {
+            source: self.get_type(),
+            hits: from_size_applied,
+            total_hits,
+        })
+    }
+}

src-tauri/src/extension/third_party/check.rs

@@ -0,0 +1,789 @@
+//! Coco has 4 sources of `plugin.json` to check and validate:
+//!
+//! 1. From coco-extensions repository
+//!   
+//!    Granted, Coco APP won't check these files directly, but the code here
+//!    will run in that repository's CI to prevent errors in the first place.
+//!
+//! 2. From the "<data directory>/third_party_extensions" directory
+//! 3. Imported via "Import Local Extension"
+//! 4. Downloaded from the "store/extension/<extension ID>/_download" API
+//!
+//! This file contains the checks that are general enough to be applied to all
+//! these 4 sources
+
+use crate::extension::Extension;
+use crate::extension::ExtensionType;
+use crate::util::platform::Platform;
+use std::collections::HashSet;
+
+pub(crate) fn general_check(extension: &Extension) -> Result<(), String> {
+    // Check main extension
+    check_main_extension_only(extension)?;
+    check_main_extension_or_sub_extension(extension, &format!("extension [{}]", extension.id))?;
+
+    // `None` if `extension` is compatible with all the platforms. Otherwise `Some(limited_platforms)`
+    let limited_supported_platforms = match extension.platforms.as_ref() {
+        Some(platforms) => {
+            if platforms.len() == Platform::num_of_supported_platforms() {
+                None
+            } else {
+                Some(platforms)
+            }
+        }
+        None => None,
+    };
+
+    // Check sub extensions
+    let commands = match extension.commands {
+        Some(ref v) => v.as_slice(),
+        None => &[],
+    };
+    let scripts = match extension.scripts {
+        Some(ref v) => v.as_slice(),
+        None => &[],
+    };
+    let quicklinks = match extension.quicklinks {
+        Some(ref v) => v.as_slice(),
+        None => &[],
+    };
+    let views = match extension.views {
+        Some(ref v) => v.as_slice(),
+        None => &[],
+    };
+    let sub_extensions = [commands, scripts, quicklinks, views].concat();
+    let mut sub_extension_ids = HashSet::new();
+
+    for sub_extension in sub_extensions.iter() {
+        check_sub_extension_only(&extension.id, sub_extension, limited_supported_platforms)?;
+        check_main_extension_or_sub_extension(
+            extension,
+            &format!("sub-extension [{}-{}]", extension.id, sub_extension.id),
+        )?;
+
+        if !sub_extension_ids.insert(sub_extension.id.as_str()) {
+            // extension ID already exists
+            return Err(format!(
+                "sub-extension with ID [{}] already exists",
+                sub_extension.id
+            ));
+        }
+    }
+
+    Ok(())
+}
+
+/// This checks the main extension only, it won't check sub-extensions.
+fn check_main_extension_only(extension: &Extension) -> Result<(), String> {
+    // Group and Extension cannot have alias
+    if extension.alias.is_some() {
+        if extension.r#type == ExtensionType::Group || extension.r#type == ExtensionType::Extension
+        {
+            return Err(format!(
+                "invalid extension [{}], extension of type [{:?}] cannot have alias",
+                extension.id, extension.r#type
+            ));
+        }
+    }
+
+    // Group and Extension cannot have hotkey
+    if extension.hotkey.is_some() {
+        if extension.r#type == ExtensionType::Group || extension.r#type == ExtensionType::Extension
+        {
+            return Err(format!(
+                "invalid extension [{}], extension of type [{:?}] cannot have hotkey",
+                extension.id, extension.r#type
+            ));
+        }
+    }
+
+    if extension.commands.is_some()
+        || extension.scripts.is_some()
+        || extension.quicklinks.is_some()
+        || extension.views.is_some()
+    {
+        if extension.r#type != ExtensionType::Group && extension.r#type != ExtensionType::Extension
+        {
+            return Err(format!(
+                "invalid extension [{}], only extension of type [Group] and [Extension] can have sub-extensions",
+                extension.id,
+            ));
+        }
+    }
+
+    if extension.settings.is_some() {
+        // Sub-extensions are all searchable, so this check is only for main extensions.
+        if !extension.searchable() {
+            return Err(format!(
+                "invalid extension {}, field [settings] is currently only allowed in searchable extension, this type of extension is not searchable [{}]",
+                extension.id, extension.r#type
+            ));
+        }
+    }
+
+    Ok(())
+}
+
+fn check_sub_extension_only(
+    extension_id: &str,
+    sub_extension: &Extension,
+    limited_platforms: Option<&HashSet<Platform>>,
+) -> Result<(), String> {
+    if sub_extension.r#type == ExtensionType::Group
+        || sub_extension.r#type == ExtensionType::Extension
+    {
+        return Err(format!(
+            "invalid sub-extension [{}-{}]: sub-extensions should not be of type [Group] or [Extension]",
+            extension_id, sub_extension.id
+        ));
+    }
+
+    if sub_extension.commands.is_some()
+        || sub_extension.scripts.is_some()
+        || sub_extension.quicklinks.is_some()
+        || sub_extension.views.is_some()
+    {
+        return Err(format!(
+            "invalid sub-extension [{}-{}]: fields [commands/scripts/quicklinks/views] should not be set in sub-extensions",
+            extension_id, sub_extension.id
+        ));
+    }
+
+    if sub_extension.developer.is_some() {
+        return Err(format!(
+            "invalid sub-extension [{}-{}]: field [developer] should not be set in sub-extensions",
+            extension_id, sub_extension.id
+        ));
+    }
+
+    if let Some(platforms_supported_by_main_extension) = limited_platforms {
+        match sub_extension.platforms {
+            Some(ref platforms_supported_by_sub_extension) => {
+                let diff = platforms_supported_by_sub_extension
+                    .difference(&platforms_supported_by_main_extension)
+                    .into_iter()
+                    .map(|p| p.to_string())
+                    .collect::<Vec<String>>();
+
+                if !diff.is_empty() {
+                    return Err(format!(
+                        "invalid sub-extension [{}-{}]: it supports platforms {:?} that are not supported by the main extension",
+                        extension_id, sub_extension.id, diff
+                    ));
+                }
+            }
+            None => {
+                // if `sub_extension.platform` is None, it means it has the same value
+                // as main extension's `platforms` field, so we don't need to check it.
+            }
+        }
+    }
+
+    Ok(())
+}
+
+fn check_main_extension_or_sub_extension(
+    extension: &Extension,
+    identifier: &str,
+) -> Result<(), String> {
+    // If field `action` is Some, then it should be a Command
+    if extension.action.is_some() && extension.r#type != ExtensionType::Command {
+        return Err(format!(
+            "invalid {}, field [action] is set for a non-Command extension",
+            identifier
+        ));
+    }
+
+    if extension.r#type == ExtensionType::Command && extension.action.is_none() {
+        return Err(format!(
+            "invalid {}, field [action] should be set for a Command extension",
+            identifier
+        ));
+    }
+
+    // If field `quicklink` is Some, then it should be a Quicklink
+    if extension.quicklink.is_some() && extension.r#type != ExtensionType::Quicklink {
+        return Err(format!(
+            "invalid {}, field [quicklink] is set for a non-Quicklink extension",
+            identifier
+        ));
+    }
+
+    if extension.r#type == ExtensionType::Quicklink && extension.quicklink.is_none() {
+        return Err(format!(
+            "invalid {}, field [quicklink] should be set for a Quicklink extension",
+            identifier
+        ));
+    }
+
+    // If field `page` is Some, then it should be a View
+    if extension.page.is_some() && extension.r#type != ExtensionType::View {
+        return Err(format!(
+            "invalid {}, field [page] is set for a non-View extension",
+            identifier
+        ));
+    }
+
+    if extension.r#type == ExtensionType::View && extension.page.is_none() {
+        return Err(format!(
+            "invalid {}, field [page] should be set for a View extension",
+            identifier
+        ));
+    }
+
+    Ok(())
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::extension::{
+        CommandAction, ExtensionSettings, Quicklink, QuicklinkLink, QuicklinkLinkComponent,
+    };
+
+    /// Helper function to create a basic valid extension
+    fn create_basic_extension(id: &str, extension_type: ExtensionType) -> Extension {
+        let page = if extension_type == ExtensionType::View {
+            Some("index.html".into())
+        } else {
+            None
+        };
+
+        Extension {
+            id: id.to_string(),
+            name: "Test Extension".to_string(),
+            developer: None,
+            platforms: None,
+            description: "Test description".to_string(),
+            icon: "test-icon.png".to_string(),
+            r#type: extension_type,
+            action: None,
+            quicklink: None,
+            commands: None,
+            scripts: None,
+            quicklinks: None,
+            views: None,
+            alias: None,
+            hotkey: None,
+            enabled: true,
+            page,
+            permission: None,
+            settings: None,
+            screenshots: None,
+            url: None,
+            version: None,
+        }
+    }
+
+    /// Helper function to create a command action
+    fn create_command_action() -> CommandAction {
+        CommandAction {
+            exec: "echo".to_string(),
+            args: Some(vec!["test".to_string()]),
+        }
+    }
+
+    /// Helper function to create a quicklink
+    fn create_quicklink() -> Quicklink {
+        Quicklink {
+            link: QuicklinkLink {
+                components: vec![QuicklinkLinkComponent::StaticStr(
+                    "https://example.com".to_string(),
+                )],
+            },
+            open_with: None,
+        }
+    }
+
+    /* test_check_main_extension_only */
+    #[test]
+    fn test_group_cannot_have_alias() {
+        let mut extension = create_basic_extension("test-group", ExtensionType::Group);
+        extension.alias = Some("group-alias".to_string());
+
+        let result = general_check(&extension);
+        assert!(result.is_err());
+        assert!(result.unwrap_err().contains("cannot have alias"));
+    }
+
+    #[test]
+    fn test_extension_cannot_have_alias() {
+        let mut extension = create_basic_extension("test-ext", ExtensionType::Extension);
+        extension.alias = Some("ext-alias".to_string());
+
+        let result = general_check(&extension);
+        assert!(result.is_err());
+        assert!(result.unwrap_err().contains("cannot have alias"));
+    }
+
+    #[test]
+    fn test_group_cannot_have_hotkey() {
+        let mut extension = create_basic_extension("test-group", ExtensionType::Group);
+        extension.hotkey = Some("cmd+g".to_string());
+
+        let result = general_check(&extension);
+        assert!(result.is_err());
+        assert!(result.unwrap_err().contains("cannot have hotkey"));
+    }
+
+    #[test]
+    fn test_extension_cannot_have_hotkey() {
+        let mut extension = create_basic_extension("test-ext", ExtensionType::Extension);
+        extension.hotkey = Some("cmd+e".to_string());
+
+        let result = general_check(&extension);
+        assert!(result.is_err());
+        assert!(result.unwrap_err().contains("cannot have hotkey"));
+    }
+
+    #[test]
+    fn test_non_container_types_cannot_have_sub_extensions() {
+        let mut extension = create_basic_extension("test-cmd", ExtensionType::Command);
+        extension.action = Some(create_command_action());
+        extension.commands = Some(vec![create_basic_extension(
+            "sub-cmd",
+            ExtensionType::Command,
+        )]);
+
+        let result = general_check(&extension);
+        assert!(result.is_err());
+        assert!(
+            result
+                .unwrap_err()
+                .contains("only extension of type [Group] and [Extension] can have sub-extensions")
+        );
+    }
+
+    #[test]
+    fn test_non_searchable_extension_set_field_settings() {
+        let mut extension = create_basic_extension("test-group", ExtensionType::Group);
+        extension.settings = Some(ExtensionSettings {
+            hide_before_open: None,
+        });
+        let error_msg = general_check(&extension).unwrap_err();
+        assert!(
+            error_msg
+                .contains("field [settings] is currently only allowed in searchable extension")
+        );
+
+        let mut extension = create_basic_extension("test-extension", ExtensionType::Extension);
+        extension.settings = Some(ExtensionSettings {
+            hide_before_open: None,
+        });
+        let error_msg = general_check(&extension).unwrap_err();
+        assert!(
+            error_msg
+                .contains("field [settings] is currently only allowed in searchable extension")
+        );
+    }
+    /* test_check_main_extension_only */
+
+    /* test check_main_extension_or_sub_extension */
+    #[test]
+    fn test_command_must_have_action() {
+        let extension = create_basic_extension("test-cmd", ExtensionType::Command);
+
+        let result = general_check(&extension);
+        assert!(result.is_err());
+        assert!(
+            result
+                .unwrap_err()
+                .contains("field [action] should be set for a Command extension")
+        );
+    }
+
+    #[test]
+    fn test_non_command_cannot_have_action() {
+        let mut extension = create_basic_extension("test-script", ExtensionType::Script);
+        extension.action = Some(create_command_action());
+
+        let result = general_check(&extension);
+        assert!(result.is_err());
+        assert!(
+            result
+                .unwrap_err()
+                .contains("field [action] is set for a non-Command extension")
+        );
+    }
+
+    #[test]
+    fn test_quicklink_must_have_quicklink_field() {
+        let extension = create_basic_extension("test-quicklink", ExtensionType::Quicklink);
+
+        let result = general_check(&extension);
+        assert!(result.is_err());
+        assert!(
+            result
+                .unwrap_err()
+                .contains("field [quicklink] should be set for a Quicklink extension")
+        );
+    }
+
+    #[test]
+    fn test_non_quicklink_cannot_have_quicklink_field() {
+        let mut extension = create_basic_extension("test-cmd", ExtensionType::Command);
+        extension.action = Some(create_command_action());
+        extension.quicklink = Some(create_quicklink());
+
+        let result = general_check(&extension);
+        assert!(result.is_err());
+        assert!(
+            result
+                .unwrap_err()
+                .contains("field [quicklink] is set for a non-Quicklink extension")
+        );
+    }
+
+    #[test]
+    fn test_view_must_have_page_field() {
+        let mut extension = create_basic_extension("test-view", ExtensionType::View);
+        // create_basic_extension() will set its page field if type is View, clear it
+        extension.page = None;
+
+        let result = general_check(&extension);
+        assert!(result.is_err());
+        assert!(
+            result
+                .unwrap_err()
+                .contains("field [page] should be set for a View extension")
+        );
+    }
+
+    #[test]
+    fn test_non_view_cannot_have_page_field() {
+        let mut extension = create_basic_extension("test-cmd", ExtensionType::Command);
+        extension.action = Some(create_command_action());
+        extension.page = Some("index.html".into());
+
+        let result = general_check(&extension);
+        assert!(result.is_err());
+        assert!(
+            result
+                .unwrap_err()
+                .contains("field [page] is set for a non-View extension")
+        );
+    }
+    /* test check_main_extension_or_sub_extension */
+
+    /* Test check_sub_extension_only */
+    #[test]
+    fn test_sub_extension_cannot_be_group() {
+        let mut extension = create_basic_extension("test-group", ExtensionType::Group);
+        let sub_group = create_basic_extension("sub-group", ExtensionType::Group);
+        extension.commands = Some(vec![sub_group]);
+
+        let result = general_check(&extension);
+        assert!(result.is_err());
+        assert!(
+            result
+                .unwrap_err()
+                .contains("sub-extensions should not be of type [Group] or [Extension]")
+        );
+    }
+
+    #[test]
+    fn test_sub_extension_cannot_be_extension() {
+        let mut extension = create_basic_extension("test-ext", ExtensionType::Extension);
+        let sub_ext = create_basic_extension("sub-ext", ExtensionType::Extension);
+        extension.scripts = Some(vec![sub_ext]);
+
+        let result = general_check(&extension);
+        assert!(result.is_err());
+        assert!(
+            result
+                .unwrap_err()
+                .contains("sub-extensions should not be of type [Group] or [Extension]")
+        );
+    }
+
+    #[test]
+    fn test_sub_extension_cannot_have_developer() {
+        let mut extension = create_basic_extension("test-group", ExtensionType::Group);
+        let mut sub_cmd = create_basic_extension("sub-cmd", ExtensionType::Command);
+        sub_cmd.action = Some(create_command_action());
+        sub_cmd.developer = Some("test-dev".to_string());
+
+        extension.commands = Some(vec![sub_cmd]);
+
+        let result = general_check(&extension);
+        assert!(result.is_err());
+        assert!(
+            result
+                .unwrap_err()
+                .contains("field [developer] should not be set in sub-extensions")
+        );
+    }
+
+    #[test]
+    fn test_sub_extension_cannot_have_sub_extensions() {
+        let mut extension = create_basic_extension("test-group", ExtensionType::Group);
+        let mut sub_cmd = create_basic_extension("sub-cmd", ExtensionType::Command);
+        sub_cmd.action = Some(create_command_action());
+        sub_cmd.commands = Some(vec![create_basic_extension(
+            "nested-cmd",
+            ExtensionType::Command,
+        )]);
+
+        extension.commands = Some(vec![sub_cmd]);
+
+        let result = general_check(&extension);
+        assert!(result.is_err());
+        assert!(result.unwrap_err().contains(
+            "fields [commands/scripts/quicklinks/views] should not be set in sub-extensions"
+        ));
+    }
+    /* Test check_sub_extension_only */
+
+    #[test]
+    fn test_duplicate_sub_extension_ids() {
+        let mut extension = create_basic_extension("test-group", ExtensionType::Group);
+
+        let mut cmd1 = create_basic_extension("duplicate-id", ExtensionType::Command);
+        cmd1.action = Some(create_command_action());
+
+        let mut cmd2 = create_basic_extension("duplicate-id", ExtensionType::Command);
+        cmd2.action = Some(create_command_action());
+
+        extension.commands = Some(vec![cmd1, cmd2]);
+
+        let result = general_check(&extension);
+        assert!(result.is_err());
+        assert!(
+            result
+                .unwrap_err()
+                .contains("sub-extension with ID [duplicate-id] already exists")
+        );
+    }
+
+    #[test]
+    fn test_duplicate_ids_across_different_sub_extension_types() {
+        let mut extension = create_basic_extension("test-group", ExtensionType::Group);
+
+        let mut cmd = create_basic_extension("same-id", ExtensionType::Command);
+        cmd.action = Some(create_command_action());
+
+        let script = create_basic_extension("same-id", ExtensionType::Script);
+
+        extension.commands = Some(vec![cmd]);
+        extension.scripts = Some(vec![script]);
+
+        let result = general_check(&extension);
+        assert!(result.is_err());
+        assert!(
+            result
+                .unwrap_err()
+                .contains("sub-extension with ID [same-id] already exists")
+        );
+    }
+
+    #[test]
+    fn test_valid_group_extension() {
+        let mut extension = create_basic_extension("test-group", ExtensionType::Group);
+        extension.commands = Some(vec![create_basic_extension("cmd1", ExtensionType::Command)]);
+
+        assert!(general_check(&extension).is_ok());
+    }
+
+    #[test]
+    fn test_valid_extension_type() {
+        let mut extension = create_basic_extension("test-ext", ExtensionType::Extension);
+        extension.scripts = Some(vec![create_basic_extension(
+            "script1",
+            ExtensionType::Script,
+        )]);
+
+        assert!(general_check(&extension).is_ok());
+    }
+
+    #[test]
+    fn test_valid_command_extension() {
+        let mut extension = create_basic_extension("test-cmd", ExtensionType::Command);
+        extension.action = Some(create_command_action());
+
+        assert!(general_check(&extension).is_ok());
+    }
+
+    #[test]
+    fn test_valid_quicklink_extension() {
+        let mut extension = create_basic_extension("test-quicklink", ExtensionType::Quicklink);
+        extension.quicklink = Some(create_quicklink());
+
+        assert!(general_check(&extension).is_ok());
+    }
+
+    #[test]
+    fn test_valid_complex_extension() {
+        let mut extension = create_basic_extension("spotify-controls", ExtensionType::Extension);
+
+        // Add valid commands
+        let mut play_pause = create_basic_extension("play-pause", ExtensionType::Command);
+        play_pause.action = Some(create_command_action());
+
+        let mut next_track = create_basic_extension("next-track", ExtensionType::Command);
+        next_track.action = Some(create_command_action());
+
+        let mut prev_track = create_basic_extension("prev-track", ExtensionType::Command);
+        prev_track.action = Some(create_command_action());
+
+        extension.commands = Some(vec![play_pause, next_track, prev_track]);
+
+        assert!(general_check(&extension).is_ok());
+    }
+
+    #[test]
+    fn test_valid_single_layer_command() {
+        let mut extension = create_basic_extension("empty-trash", ExtensionType::Command);
+        extension.action = Some(create_command_action());
+
+        assert!(general_check(&extension).is_ok());
+    }
+
+    #[test]
+    fn test_command_alias_and_hotkey_allowed() {
+        let mut extension = create_basic_extension("test-cmd", ExtensionType::Command);
+        extension.action = Some(create_command_action());
+        extension.alias = Some("cmd-alias".to_string());
+        extension.hotkey = Some("cmd+t".to_string());
+
+        assert!(general_check(&extension).is_ok());
+    }
+
+    /*
+     * Tests for check that sub extension cannot support extensions that are not
+     * supported by the main extension
+     *
+     * Start here
+     */
+    #[test]
+    fn test_platform_validation_both_none() {
+        // Case 1: main extension's platforms = None, sub extension's platforms = None
+        // Should return Ok(())
+        let mut main_extension = create_basic_extension("main-ext", ExtensionType::Group);
+        main_extension.platforms = None;
+
+        let mut sub_cmd = create_basic_extension("sub-cmd", ExtensionType::Command);
+        sub_cmd.action = Some(create_command_action());
+        sub_cmd.platforms = None;
+
+        main_extension.commands = Some(vec![sub_cmd]);
+
+        let result = general_check(&main_extension);
+        assert!(result.is_ok());
+    }
+
+    #[test]
+    fn test_platform_validation_main_all_sub_none() {
+        // Case 2: main extension's platforms = Some(all platforms), sub extension's platforms = None
+        // Should return Ok(())
+        let mut main_extension = create_basic_extension("main-ext", ExtensionType::Group);
+        main_extension.platforms = Some(Platform::all());
+
+        let mut sub_cmd = create_basic_extension("sub-cmd", ExtensionType::Command);
+        sub_cmd.action = Some(create_command_action());
+        sub_cmd.platforms = None;
+
+        main_extension.commands = Some(vec![sub_cmd]);
+
+        let result = general_check(&main_extension);
+        assert!(result.is_ok());
+    }
+
+    #[test]
+    fn test_platform_validation_main_none_sub_some() {
+        // Case 3: main extension's platforms = None, sub extension's platforms = Some([Platform::Macos])
+        // Should return Ok(()) because None means supports all platforms
+        let mut main_extension = create_basic_extension("main-ext", ExtensionType::Group);
+        main_extension.platforms = None;
+
+        let mut sub_cmd = create_basic_extension("sub-cmd", ExtensionType::Command);
+        sub_cmd.action = Some(create_command_action());
+        sub_cmd.platforms = Some(HashSet::from([Platform::Macos]));
+
+        main_extension.commands = Some(vec![sub_cmd]);
+
+        let result = general_check(&main_extension);
+        assert!(result.is_ok());
+    }
+
+    #[test]
+    fn test_platform_validation_main_all_sub_subset() {
+        // Case 4: main extension's platforms = Some(all platforms), sub extension's platforms = Some([Platform::Macos])
+        // Should return Ok(()) because sub extension supports a subset of main extension's platforms
+        let mut main_extension = create_basic_extension("main-ext", ExtensionType::Group);
+        main_extension.platforms = Some(Platform::all());
+
+        let mut sub_cmd = create_basic_extension("sub-cmd", ExtensionType::Command);
+        sub_cmd.action = Some(create_command_action());
+        sub_cmd.platforms = Some(HashSet::from([Platform::Macos]));
+
+        main_extension.commands = Some(vec![sub_cmd]);
+
+        let result = general_check(&main_extension);
+        assert!(result.is_ok());
+    }
+
+    #[test]
+    fn test_platform_validation_main_limited_sub_unsupported() {
+        // Case 5: main extension's platforms = Some([Platform::Macos]), sub extension's platforms = Some([Platform::Linux])
+        // Should return Err because sub extension supports a platform not supported by main extension
+        let mut main_extension = create_basic_extension("main-ext", ExtensionType::Group);
+        main_extension.platforms = Some(HashSet::from([Platform::Macos]));
+
+        let mut sub_cmd = create_basic_extension("sub-cmd", ExtensionType::Command);
+        sub_cmd.action = Some(create_command_action());
+        sub_cmd.platforms = Some(HashSet::from([Platform::Linux]));
+
+        main_extension.commands = Some(vec![sub_cmd]);
+
+        let result = general_check(&main_extension);
+        assert!(result.is_err());
+        let error_msg = result.unwrap_err();
+        assert!(error_msg.contains("it supports platforms"));
+        assert!(error_msg.contains("that are not supported by the main extension"));
+        assert!(error_msg.contains("Linux")); // Should mention the unsupported platform
+    }
+
+    #[test]
+    fn test_platform_validation_main_partial_sub_unsupported() {
+        // Case 6: main extension's platforms = Some([Platform::Macos, Platform::Windows]), sub extension's platforms = Some([Platform::Linux])
+        // Should return Err because sub extension supports a platform not supported by main extension
+        let mut main_extension = create_basic_extension("main-ext", ExtensionType::Group);
+        main_extension.platforms = Some(HashSet::from([Platform::Macos, Platform::Windows]));
+
+        let mut sub_cmd = create_basic_extension("sub-cmd", ExtensionType::Command);
+        sub_cmd.action = Some(create_command_action());
+        sub_cmd.platforms = Some(HashSet::from([Platform::Linux]));
+
+        main_extension.commands = Some(vec![sub_cmd]);
+
+        let result = general_check(&main_extension);
+        assert!(result.is_err());
+        let error_msg = result.unwrap_err();
+        assert!(error_msg.contains("it supports platforms"));
+        assert!(error_msg.contains("that are not supported by the main extension"));
+        assert!(error_msg.contains("Linux")); // Should mention the unsupported platform
+    }
+
+    #[test]
+    fn test_platform_validation_main_limited_sub_none() {
+        // Case 7: main extension's platforms = Some([Platform::Macos]), sub extension's platforms = None
+        // Should return Ok(()) because when sub extension's platforms is None, it inherits main extension's platforms
+        let mut main_extension = create_basic_extension("main-ext", ExtensionType::Group);
+        main_extension.platforms = Some(HashSet::from([Platform::Macos]));
+
+        let mut sub_cmd = create_basic_extension("sub-cmd", ExtensionType::Command);
+        sub_cmd.action = Some(create_command_action());
+        sub_cmd.platforms = None;
+
+        main_extension.commands = Some(vec![sub_cmd]);
+
+        let result = general_check(&main_extension);
+        assert!(result.is_ok());
+    }
+    /*
+     * Tests for check that sub extension cannot support extensions that are not
+     * supported by the main extension
+     *
+     * End here
+     */
+}

src-tauri/src/extension/third_party/install/local_extension.rs

@@ -0,0 +1,303 @@
+use crate::extension::third_party::check::general_check;
+use crate::extension::third_party::install::{
+    convert_page, filter_out_incompatible_sub_extensions, is_extension_installed,
+};
+use crate::extension::third_party::{
+    THIRD_PARTY_EXTENSIONS_SEARCH_SOURCE, get_third_party_extension_directory,
+};
+use crate::extension::{
+    Extension, canonicalize_relative_icon_path, canonicalize_relative_page_path,
+};
+use crate::extension::{ExtensionType, PLUGIN_JSON_FILE_NAME};
+use crate::util::platform::Platform;
+use serde_json::Value as Json;
+use std::path::Path;
+use std::path::PathBuf;
+use tauri::AppHandle;
+use tokio::fs;
+
+/// All the extensions installed from local file will belong to a special developer
+/// "__local__".
+const DEVELOPER_ID_LOCAL: &str = "__local__";
+
+/// Install the extension specified by `path`.
+///
+/// `path` should point to a directory with the following structure:
+///
+/// ```text
+/// extension-directory/
+/// ├── assets/
+/// │   ├── icon.png
+/// │   └── other-assets...
+/// └── plugin.json
+/// ```
+#[tauri::command]
+pub(crate) async fn install_local_extension(
+    tauri_app_handle: AppHandle,
+    path: PathBuf,
+) -> Result<(), String> {
+    let extension_dir_name = path
+        .file_name()
+        .ok_or_else(|| "Invalid extension: no directory name".to_string())?
+        .to_str()
+        .ok_or_else(|| "Invalid extension: non-UTF8 extension id".to_string())?;
+
+    // we use extension directory name as the extension ID.
+    let extension_id = extension_dir_name;
+    if is_extension_installed(DEVELOPER_ID_LOCAL, extension_id).await {
+        // The frontend code uses this string to distinguish between 2 error cases:
+        //
+        // 1. This extension is already imported
+        // 2. This extension is incompatible with the current platform
+        // 3. The selected directory does not contain a valid extension
+        //
+        // do NOT edit this without updating the frontend code.
+        //
+        // ```ts
+        // if (errorMessage === "already imported") {
+        //   addError(t("settings.extensions.hints.extensionAlreadyImported"));
+        // } else if (errorMessage === "incompatible") {
+        //   addError(t("settings.extensions.hints.incompatibleExtension"));
+        // } else {
+        //   addError(t("settings.extensions.hints.importFailed"));
+        // }
+        // ```
+        //
+        // This is definitely error-prone, but we have to do this until we have
+        // structured error type
+        return Err("already imported".into());
+    }
+
+    let plugin_json_path = path.join(PLUGIN_JSON_FILE_NAME);
+
+    let plugin_json_content = fs::read_to_string(&plugin_json_path)
+        .await
+        .map_err(|e| e.to_string())?;
+
+    // Parse as JSON first as it is not valid for `struct Extension`, we need to
+    // correct it (set fields `id` and `developer`) before converting it to `struct Extension`:
+    let mut extension_json: Json =
+        serde_json::from_str(&plugin_json_content).map_err(|e| e.to_string())?;
+
+    // Set the main extension ID to the directory name
+    let extension_obj = extension_json
+        .as_object_mut()
+        .expect("extension_json should be an object");
+    extension_obj.insert("id".to_string(), Json::String(extension_id.to_string()));
+    extension_obj.insert(
+        "developer".to_string(),
+        Json::String(DEVELOPER_ID_LOCAL.to_string()),
+    );
+
+    // Counter for sub-extension IDs
+    let mut counter = 1u32;
+
+    // Set IDs for commands
+    if let Some(commands) = extension_obj.get_mut("commands") {
+        if let Some(commands_array) = commands.as_array_mut() {
+            for command in commands_array {
+                if let Some(command_obj) = command.as_object_mut() {
+                    command_obj.insert("id".to_string(), Json::String(counter.to_string()));
+                    counter += 1;
+                }
+            }
+        }
+    }
+
+    // Set IDs for quicklinks
+    if let Some(quicklinks) = extension_obj.get_mut("quicklinks") {
+        if let Some(quicklinks_array) = quicklinks.as_array_mut() {
+            for quicklink in quicklinks_array {
+                if let Some(quicklink_obj) = quicklink.as_object_mut() {
+                    quicklink_obj.insert("id".to_string(), Json::String(counter.to_string()));
+                    counter += 1;
+                }
+            }
+        }
+    }
+
+    // Set IDs for scripts
+    if let Some(scripts) = extension_obj.get_mut("scripts") {
+        if let Some(scripts_array) = scripts.as_array_mut() {
+            for script in scripts_array {
+                if let Some(script_obj) = script.as_object_mut() {
+                    script_obj.insert("id".to_string(), Json::String(counter.to_string()));
+                    counter += 1;
+                }
+            }
+        }
+    }
+
+    // Now we can convert JSON to `struct Extension`
+    let mut extension: Extension =
+        serde_json::from_value(extension_json).map_err(|e| e.to_string())?;
+
+    let current_platform = Platform::current();
+    /* Check begins here */
+    general_check(&extension)?;
+
+    if let Some(ref platforms) = extension.platforms {
+        if !platforms.contains(&current_platform) {
+            // The frontend code uses this string to distinguish between 3 error cases:
+            //
+            // 1. This extension is already imported
+            // 2. This extension is incompatible with the current platform
+            // 3. The selected directory does not contain a valid extension
+            //
+            // do NOT edit this without updating the frontend code.
+            //
+            // ```ts
+            // if (errorMessage === "already imported") {
+            //   addError(t("settings.extensions.hints.extensionAlreadyImported"));
+            // } else if (errorMessage === "incompatible") {
+            //   addError(t("settings.extensions.hints.incompatibleExtension"));
+            // } else {
+            //   addError(t("settings.extensions.hints.importFailed"));
+            // }
+            // ```
+            //
+            // This is definitely error-prone, but we have to do this until we have
+            // structured error type
+            return Err("incompatible".into());
+        }
+    }
+    /* Check ends here */
+
+    // Extension is compatible with current platform, but it could contain sub
+    // extensions that are not, filter them out.
+    filter_out_incompatible_sub_extensions(&mut extension, current_platform);
+
+    // We are going to modify our third-party extension list, grab the write lock
+    // to ensure exclusive access.
+    let mut third_party_ext_list_write_lock = THIRD_PARTY_EXTENSIONS_SEARCH_SOURCE
+        .get()
+        .expect("global third party search source not set")
+        .write_lock()
+        .await;
+
+    // Create destination directory
+    let dest_dir = get_third_party_extension_directory(&tauri_app_handle)
+        .join(DEVELOPER_ID_LOCAL)
+        .join(extension_dir_name);
+
+    fs::create_dir_all(&dest_dir)
+        .await
+        .map_err(|e| e.to_string())?;
+
+    // Copy all files except plugin.json
+    let mut entries = fs::read_dir(&path).await.map_err(|e| e.to_string())?;
+
+    while let Some(entry) = entries.next_entry().await.map_err(|e| e.to_string())? {
+        let file_name = entry.file_name();
+        let file_name_str = file_name
+            .to_str()
+            .ok_or_else(|| "Invalid filename: non-UTF8".to_string())?;
+
+        // plugin.json will be handled separately.
+        if file_name_str == PLUGIN_JSON_FILE_NAME {
+            continue;
+        }
+
+        let src_path = entry.path();
+        let dest_path = dest_dir.join(&file_name);
+
+        if src_path.is_dir() {
+            // Recursively copy directory
+            copy_dir_recursively(&src_path, &dest_path).await?;
+        } else {
+            // Copy file
+            fs::copy(&src_path, &dest_path)
+                .await
+                .map_err(|e| e.to_string())?;
+        }
+    }
+
+    // Write the corrected plugin.json file
+    let corrected_plugin_json =
+        serde_json::to_string_pretty(&extension).map_err(|e| e.to_string())?;
+
+    let dest_plugin_json_path = dest_dir.join(PLUGIN_JSON_FILE_NAME);
+    fs::write(&dest_plugin_json_path, corrected_plugin_json)
+        .await
+        .map_err(|e| e.to_string())?;
+
+    /*
+     * Call convert_page() to update the page files.  This has to be done after
+     * writing the extension files
+     */
+    let absolute_page_paths: Vec<PathBuf> = {
+        fn canonicalize_page_path(page_path: &Path, extension_root: &Path) -> PathBuf {
+            if page_path.is_relative() {
+                // It is relative to the extension root directory
+                extension_root.join(page_path)
+            } else {
+                page_path.into()
+            }
+        }
+
+        if extension.r#type == ExtensionType::View {
+            let page = extension
+                .page
+                .as_ref()
+                .expect("View extension should set its page field");
+            let path = canonicalize_page_path(Path::new(page.as_str()), &dest_dir);
+
+            vec![path]
+        } else if extension.r#type.contains_sub_items()
+            && let Some(ref views) = extension.views
+        {
+            let mut paths = Vec::with_capacity(views.len());
+
+            for view in views.iter() {
+                let page = view
+                    .page
+                    .as_ref()
+                    .expect("View extension should set its page field");
+                let path = canonicalize_page_path(Path::new(page.as_str()), &dest_dir);
+
+                paths.push(path);
+            }
+
+            paths
+        } else {
+            // No pages in this extension
+            Vec::new()
+        }
+    };
+    for page_path in absolute_page_paths {
+        convert_page(&page_path).await?;
+    }
+
+    // Canonicalize relative icon and page paths
+    canonicalize_relative_icon_path(&dest_dir, &mut extension)?;
+    canonicalize_relative_page_path(&dest_dir, &mut extension)?;
+
+    // Add extension to the search source
+    third_party_ext_list_write_lock.push(extension);
+
+    Ok(())
+}
+
+/// Helper function to recursively copy directories.
+#[async_recursion::async_recursion]
+async fn copy_dir_recursively(src: &Path, dest: &Path) -> Result<(), String> {
+    tokio::fs::create_dir_all(dest)
+        .await
+        .map_err(|e| e.to_string())?;
+    let mut read_dir = tokio::fs::read_dir(src).await.map_err(|e| e.to_string())?;
+
+    while let Some(entry) = read_dir.next_entry().await.map_err(|e| e.to_string())? {
+        let src_path = entry.path();
+        let dest_path = dest.join(entry.file_name());
+
+        if src_path.is_dir() {
+            copy_dir_recursively(&src_path, &dest_path).await?;
+        } else {
+            tokio::fs::copy(&src_path, &dest_path)
+                .await
+                .map_err(|e| e.to_string())?;
+        }
+    }
+
+    Ok(())
+}

src-tauri/src/extension/third_party/install/mod.rs

@@ -0,0 +1,684 @@
+//! This module contains the code of extension installation.
+//!
+//!
+//! # How
+//!
+//! Technically, installing an extension involves the following steps. The order
+//! may vary between implementations.
+//!
+//!   1. Check if it is already installed, if so, return
+//!   
+//!   2. Correct the `plugin.json` JSON if it does not conform to our `struct
+//!      Extension` definition. This can happen because the JSON written by
+//!      developers is in a simplified form for a better developer experience.
+//!
+//!   3. Validate the corrected `plugin.json`
+//!      1. misc checks
+//!      2. Platform compatibility check
+//!
+//!   4. Write the extension files to the corresponding location
+//!
+//!      * developer directory
+//!        * extension directory
+//!          * assets directory
+//!            * various assets files, e.g., "icon.png"
+//!          * plugin.json file
+//!          * View pages if exist
+//!
+//!   5. If this extension contains any View extensions, call `convert_page()`
+//!      on them to make them loadable by Tauri/webview.
+//!
+//!      See `convert_page()` for more info.
+//!
+//!   6. Canonicalize `Extension.icon` and `Extension.page` fields if they are
+//!      relative paths
+//!
+//!      * icon: relative to the `assets` directory
+//!      * page: relative to the extension root directory
+//!
+//!   7. Add the extension to the in-memory extension list.
+
+pub(crate) mod local_extension;
+pub(crate) mod store;
+
+use crate::extension::Extension;
+use crate::util::platform::Platform;
+use std::path::Path;
+
+use super::THIRD_PARTY_EXTENSIONS_SEARCH_SOURCE;
+
+pub(crate) async fn is_extension_installed(developer: &str, extension_id: &str) -> bool {
+    THIRD_PARTY_EXTENSIONS_SEARCH_SOURCE
+        .get()
+        .expect("global third party search source not set")
+        .extension_exists(developer, extension_id)
+        .await
+}
+
+/// Filters out sub-extensions that are not compatible with the current platform.
+///
+/// We make `current_platform` an argument so that this function is testable.
+pub(crate) fn filter_out_incompatible_sub_extensions(
+    extension: &mut Extension,
+    current_platform: Platform,
+) {
+    // Only process extensions of type Group or Extension that can have sub-extensions
+    if !extension.r#type.contains_sub_items() {
+        return;
+    }
+
+    // For main extensions, None means all.
+    let main_extension_supported_platforms = extension.platforms.clone().unwrap_or(Platform::all());
+
+    // Filter commands
+    if let Some(ref mut commands) = extension.commands {
+        commands.retain(|sub_ext| {
+            if let Some(ref platforms) = sub_ext.platforms {
+                platforms.contains(&current_platform)
+            } else {
+                main_extension_supported_platforms.contains(&current_platform)
+            }
+        });
+    }
+
+    // Filter scripts
+    if let Some(ref mut scripts) = extension.scripts {
+        scripts.retain(|sub_ext| {
+            if let Some(ref platforms) = sub_ext.platforms {
+                platforms.contains(&current_platform)
+            } else {
+                main_extension_supported_platforms.contains(&current_platform)
+            }
+        });
+    }
+
+    // Filter quicklinks
+    if let Some(ref mut quicklinks) = extension.quicklinks {
+        quicklinks.retain(|sub_ext| {
+            if let Some(ref platforms) = sub_ext.platforms {
+                platforms.contains(&current_platform)
+            } else {
+                main_extension_supported_platforms.contains(&current_platform)
+            }
+        });
+    }
+
+    // Filter views
+    if let Some(ref mut views) = extension.views {
+        views.retain(|sub_ext| {
+            if let Some(ref platforms) = sub_ext.platforms {
+                platforms.contains(&current_platform)
+            } else {
+                main_extension_supported_platforms.contains(&current_platform)
+            }
+        });
+    }
+}
+
+/// Convert the page file to make it loadable by the Tauri/Webview.
+pub(crate) async fn convert_page(absolute_page_path: &Path) -> Result<(), String> {
+    assert!(absolute_page_path.is_absolute());
+
+    let page_content = tokio::fs::read_to_string(absolute_page_path)
+        .await
+        .map_err(|e| e.to_string())?;
+
+    let new_page_content = _convert_page(&page_content, absolute_page_path)?;
+
+    // overwrite it
+    tokio::fs::write(absolute_page_path, new_page_content)
+        .await
+        .map_err(|e| e.to_string())?;
+
+    Ok(())
+}
+
+/// NOTE: There is no Rust implementation of `convertFileSrc()` in Tauri. Our
+/// impl here is based on [comment](https://github.com/tauri-apps/tauri/issues/12022#issuecomment-2572879115)
+fn convert_file_src(path: &Path) -> Result<String, String> {
+    #[cfg(any(windows, target_os = "android"))]
+    let base = "http://asset.localhost/";
+    #[cfg(not(any(windows, target_os = "android")))]
+    let base = "asset://localhost/";
+
+    let path =
+        dunce::canonicalize(path).map_err(|e| format!("Failed to canonicalize path: {}", e))?;
+    let path_str = path.to_string_lossy();
+    let encoded = urlencoding::encode(&path_str);
+
+    Ok(format!("{base}{encoded}"))
+}
+
+/// Tauri cannot directly access the file system, to make a file loadable, we
+/// have to `canonicalize()` and `convertFileSrc()` its path before passing it
+/// to Tauri.
+///
+/// View extension's page is a HTML file that Coco (Tauri) will load, we need
+/// to process all `<PATH>` tags:
+///
+/// 1. `<script type="xxx" crossorigin src="<PATH>"></script>`
+/// 2. `<a href="<PATH>">xxx</a>`
+/// 3. `<link rel="xxx" href="<PATH>"/>`
+/// 4. `<img class="xxx" src="<PATH>" alt="xxx"/>`
+fn _convert_page(page_content: &str, absolute_page_path: &Path) -> Result<String, String> {
+    use scraper::{Html, Selector};
+
+    /// Helper function.
+    ///
+    /// Search `document` for the tag attributes specified by `tag_with_attribute`
+    /// and `tag_attribute`, call `convert_file_src()`, then update the attribute
+    /// value with the function return value.
+    fn modify_tag_attributes(
+        document: &Html,
+        modified_html: &mut String,
+        base_dir: &Path,
+        tag_with_attribute: &str,
+        tag_attribute: &str,
+    ) -> Result<(), String> {
+        let script_selector = Selector::parse(tag_with_attribute).unwrap();
+        for element in document.select(&script_selector) {
+            if let Some(src) = element.value().attr(tag_attribute) {
+                if !src.starts_with("http://")
+                    && !src.starts_with("https://")
+                    && !src.starts_with("asset://")
+                    && !src.starts_with("http://asset.localhost/")
+                {
+                    // It could be a path like "/assets/index-41be3ec9.js", but it
+                    // is still a relative path. We need to remove the starting /
+                    // or path.join() will think it is an absolute path and does nothing
+                    let corrected_src = if src.starts_with('/') { &src[1..] } else { src };
+
+                    let full_path = base_dir.join(corrected_src);
+
+                    let converted_path = convert_file_src(full_path.as_path())?;
+                    *modified_html = modified_html.replace(
+                        &format!("{}=\"{}\"", tag_attribute, src),
+                        &format!("{}=\"{}\"", tag_attribute, converted_path),
+                    );
+                }
+            }
+        }
+
+        Ok(())
+    }
+
+    let base_dir = absolute_page_path
+        .parent()
+        .ok_or_else(|| format!("page path is invalid, it should have a parent path"))?;
+    let document: Html = Html::parse_document(page_content);
+    let mut modified_html: String = page_content.to_string();
+
+    modify_tag_attributes(
+        &document,
+        &mut modified_html,
+        base_dir,
+        "script[src]",
+        "src",
+    )?;
+    modify_tag_attributes(&document, &mut modified_html, base_dir, "a[href]", "href")?;
+    modify_tag_attributes(
+        &document,
+        &mut modified_html,
+        base_dir,
+        "link[href]",
+        "href",
+    )?;
+    modify_tag_attributes(&document, &mut modified_html, base_dir, "img[src]", "src")?;
+
+    Ok(modified_html)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::extension::ExtensionType;
+    use std::collections::HashSet;
+
+    /// Helper function to create a basic extension for testing
+    /// `filter_out_incompatible_sub_extensions`
+    fn create_test_extension(
+        extension_type: ExtensionType,
+        platforms: Option<HashSet<Platform>>,
+    ) -> Extension {
+        Extension {
+            id: "ID".into(),
+            name: "name".into(),
+            developer: None,
+            platforms,
+            description: "Test extension".to_string(),
+            icon: "test-icon".to_string(),
+            r#type: extension_type,
+            action: None,
+            quicklink: None,
+            commands: None,
+            scripts: None,
+            quicklinks: None,
+            views: None,
+            alias: None,
+            hotkey: None,
+            enabled: true,
+            settings: None,
+            page: None,
+            permission: None,
+            screenshots: None,
+            url: None,
+            version: None,
+        }
+    }
+
+    #[test]
+    fn test_filter_out_incompatible_sub_extensions_filter_non_group_extension_unchanged() {
+        // Command
+        let mut extension = create_test_extension(ExtensionType::Command, None);
+        let clone = extension.clone();
+        filter_out_incompatible_sub_extensions(&mut extension, Platform::Linux);
+        assert_eq!(extension, clone);
+
+        // Quicklink
+        let mut extension = create_test_extension(ExtensionType::Quicklink, None);
+        let clone = extension.clone();
+        filter_out_incompatible_sub_extensions(&mut extension, Platform::Linux);
+        assert_eq!(extension, clone);
+    }
+
+    #[test]
+    fn test_filter_out_incompatible_sub_extensions() {
+        let mut main_extension = create_test_extension(ExtensionType::Group, None);
+        // init sub extensions, which are macOS-only
+        let commands = vec![create_test_extension(
+            ExtensionType::Command,
+            Some(HashSet::from([Platform::Macos])),
+        )];
+        let quicklinks = vec![create_test_extension(
+            ExtensionType::Quicklink,
+            Some(HashSet::from([Platform::Macos])),
+        )];
+        let scripts = vec![create_test_extension(
+            ExtensionType::Script,
+            Some(HashSet::from([Platform::Macos])),
+        )];
+        let views = vec![create_test_extension(
+            ExtensionType::View,
+            Some(HashSet::from([Platform::Macos])),
+        )];
+        // Set sub extensions
+        main_extension.commands = Some(commands);
+        main_extension.quicklinks = Some(quicklinks);
+        main_extension.scripts = Some(scripts);
+        main_extension.views = Some(views);
+
+        // Current platform is Linux, all the sub extensions should be filtered out.
+        filter_out_incompatible_sub_extensions(&mut main_extension, Platform::Linux);
+
+        // assertions
+        assert!(main_extension.commands.unwrap().is_empty());
+        assert!(main_extension.quicklinks.unwrap().is_empty());
+        assert!(main_extension.scripts.unwrap().is_empty());
+        assert!(main_extension.views.unwrap().is_empty());
+    }
+
+    /// Sub extensions are compatible with all the platforms, nothing to filter out.
+    #[test]
+    fn test_filter_out_incompatible_sub_extensions_all_compatible() {
+        {
+            let mut main_extension = create_test_extension(ExtensionType::Group, None);
+            // init sub extensions, which are compatible with all the platforms
+            let commands = vec![create_test_extension(
+                ExtensionType::Command,
+                Some(Platform::all()),
+            )];
+            let quicklinks = vec![create_test_extension(
+                ExtensionType::Quicklink,
+                Some(Platform::all()),
+            )];
+            let scripts = vec![create_test_extension(
+                ExtensionType::Script,
+                Some(Platform::all()),
+            )];
+            let views = vec![create_test_extension(
+                ExtensionType::View,
+                Some(Platform::all()),
+            )];
+            // Set sub extensions
+            main_extension.commands = Some(commands);
+            main_extension.quicklinks = Some(quicklinks);
+            main_extension.scripts = Some(scripts);
+            main_extension.views = Some(views);
+
+            // Current platform is Linux, all the sub extensions should be filtered out.
+            filter_out_incompatible_sub_extensions(&mut main_extension, Platform::Linux);
+
+            // assertions
+            assert_eq!(main_extension.commands.unwrap().len(), 1);
+            assert_eq!(main_extension.quicklinks.unwrap().len(), 1);
+            assert_eq!(main_extension.scripts.unwrap().len(), 1);
+            assert_eq!(main_extension.views.unwrap().len(), 1);
+        }
+
+        // main extension is compatible with all platforms, sub extension's platforms
+        // is None, which means all platforms are supported
+        {
+            let mut main_extension = create_test_extension(ExtensionType::Group, None);
+            // init sub extensions, which are compatible with all the platforms
+            let commands = vec![create_test_extension(ExtensionType::Command, None)];
+            let quicklinks = vec![create_test_extension(ExtensionType::Quicklink, None)];
+            let scripts = vec![create_test_extension(ExtensionType::Script, None)];
+            let views = vec![create_test_extension(ExtensionType::View, None)];
+            // Set sub extensions
+            main_extension.commands = Some(commands);
+            main_extension.quicklinks = Some(quicklinks);
+            main_extension.scripts = Some(scripts);
+            main_extension.views = Some(views);
+
+            // Current platform is Linux, all the sub extensions should be filtered out.
+            filter_out_incompatible_sub_extensions(&mut main_extension, Platform::Linux);
+
+            // assertions
+            assert_eq!(main_extension.commands.unwrap().len(), 1);
+            assert_eq!(main_extension.quicklinks.unwrap().len(), 1);
+            assert_eq!(main_extension.scripts.unwrap().len(), 1);
+            assert_eq!(main_extension.views.unwrap().len(), 1);
+        }
+    }
+
+    #[test]
+    fn test_main_extension_is_incompatible_sub_extension_platforms_none() {
+        {
+            let mut main_extension =
+                create_test_extension(ExtensionType::Group, Some(HashSet::from([Platform::Macos])));
+            let commands = vec![create_test_extension(ExtensionType::Command, None)];
+            main_extension.commands = Some(commands);
+            filter_out_incompatible_sub_extensions(&mut main_extension, Platform::Linux);
+            assert_eq!(main_extension.commands.unwrap().len(), 0);
+        }
+
+        {
+            let mut main_extension =
+                create_test_extension(ExtensionType::Group, Some(HashSet::from([Platform::Macos])));
+            let scripts = vec![create_test_extension(ExtensionType::Script, None)];
+            main_extension.scripts = Some(scripts);
+            filter_out_incompatible_sub_extensions(&mut main_extension, Platform::Linux);
+            assert_eq!(main_extension.scripts.unwrap().len(), 0);
+        }
+
+        {
+            let mut main_extension =
+                create_test_extension(ExtensionType::Group, Some(HashSet::from([Platform::Macos])));
+            let quicklinks = vec![create_test_extension(ExtensionType::Quicklink, None)];
+            main_extension.quicklinks = Some(quicklinks);
+            filter_out_incompatible_sub_extensions(&mut main_extension, Platform::Linux);
+            assert_eq!(main_extension.quicklinks.unwrap().len(), 0);
+        }
+        {
+            let mut main_extension =
+                create_test_extension(ExtensionType::Group, Some(HashSet::from([Platform::Macos])));
+            let views = vec![create_test_extension(ExtensionType::View, None)];
+            main_extension.views = Some(views);
+            filter_out_incompatible_sub_extensions(&mut main_extension, Platform::Linux);
+            assert_eq!(main_extension.views.unwrap().len(), 0);
+        }
+    }
+
+    #[test]
+    fn test_main_extension_compatible_sub_extension_platforms_none() {
+        let mut main_extension =
+            create_test_extension(ExtensionType::Group, Some(HashSet::from([Platform::Macos])));
+        let views = vec![create_test_extension(ExtensionType::View, None)];
+        main_extension.views = Some(views);
+        filter_out_incompatible_sub_extensions(&mut main_extension, Platform::Macos);
+        assert_eq!(main_extension.views.unwrap().len(), 1);
+    }
+
+    #[test]
+    fn test_convert_page_script_tag() {
+        use tempfile::TempDir;
+
+        let temp_dir = TempDir::new().unwrap();
+        let html_file = temp_dir.path().join("test.html");
+        let js_file = temp_dir.path().join("main.js");
+
+        let html_content = r#"<html><body><script src="main.js"></script></body></html>"#;
+        std::fs::write(&html_file, html_content).unwrap();
+        std::fs::write(&js_file, "").unwrap();
+
+        let result = _convert_page(html_content, &html_file).unwrap();
+
+        let path = convert_file_src(&js_file).unwrap();
+        let expected = format!(
+            "<html><body><script src=\"{}\"></script></body></html>",
+            path
+        );
+
+        assert_eq!(result, expected);
+    }
+
+    #[test]
+    fn test_convert_page_script_tag_with_a_root_char() {
+        use tempfile::TempDir;
+
+        let temp_dir = TempDir::new().unwrap();
+        let html_file = temp_dir.path().join("test.html");
+        let js_file = temp_dir.path().join("main.js");
+
+        let html_content = r#"<html><body><script src="/main.js"></script></body></html>"#;
+        std::fs::write(&html_file, html_content).unwrap();
+        std::fs::write(&js_file, "").unwrap();
+
+        let result = _convert_page(html_content, &html_file).unwrap();
+
+        let path = convert_file_src(&js_file).unwrap();
+        let expected = format!(
+            "<html><body><script src=\"{}\"></script></body></html>",
+            path
+        );
+
+        assert_eq!(result, expected);
+    }
+
+    #[test]
+    fn test_convert_page_a_tag() {
+        use tempfile::TempDir;
+
+        let temp_dir = TempDir::new().unwrap();
+        let html_file = temp_dir.path().join("test.html");
+        let js_file = temp_dir.path().join("main.js");
+
+        let html_content = r#"<html><body><a href="main.js">foo</a></body></html>"#;
+        std::fs::write(&html_file, html_content).unwrap();
+        std::fs::write(&js_file, "").unwrap();
+
+        let result = _convert_page(html_content, &html_file).unwrap();
+
+        let path = convert_file_src(&js_file).unwrap();
+        let expected = format!("<html><body><a href=\"{}\">foo</a></body></html>", path);
+
+        assert_eq!(result, expected);
+    }
+
+    #[test]
+    fn test_convert_page_a_tag_with_a_root_char() {
+        use tempfile::TempDir;
+
+        let temp_dir = TempDir::new().unwrap();
+        let html_file = temp_dir.path().join("test.html");
+        let js_file = temp_dir.path().join("main.js");
+
+        let html_content = r#"<html><body><a href="/main.js">foo</a></body></html>"#;
+        std::fs::write(&html_file, html_content).unwrap();
+        std::fs::write(&js_file, "").unwrap();
+
+        let result = _convert_page(html_content, &html_file).unwrap();
+
+        let path = convert_file_src(&js_file).unwrap();
+        let expected = format!("<html><body><a href=\"{}\">foo</a></body></html>", path);
+
+        assert_eq!(result, expected);
+    }
+
+    #[test]
+    fn test_convert_page_link_href_tag() {
+        use tempfile::TempDir;
+
+        let temp_dir = TempDir::new().unwrap();
+        let html_file = temp_dir.path().join("test.html");
+        let css_file = temp_dir.path().join("main.css");
+
+        let html_content = r#"<html><body><link rel="stylesheet" href="main.css"/></body></html>"#;
+        std::fs::write(&html_file, html_content).unwrap();
+        std::fs::write(&css_file, "").unwrap();
+
+        let result = _convert_page(html_content, &html_file).unwrap();
+
+        let path = convert_file_src(&css_file).unwrap();
+        let expected = format!(
+            "<html><body><link rel=\"stylesheet\" href=\"{}\"/></body></html>",
+            path
+        );
+
+        assert_eq!(result, expected);
+    }
+
+    #[test]
+    fn test_convert_page_link_href_tag_with_a_root_tag() {
+        use tempfile::TempDir;
+
+        let temp_dir = TempDir::new().unwrap();
+        let html_file = temp_dir.path().join("test.html");
+        let css_file = temp_dir.path().join("main.css");
+
+        let html_content = r#"<html><body><link rel="stylesheet" href="/main.css"/></body></html>"#;
+        std::fs::write(&html_file, html_content).unwrap();
+        std::fs::write(&css_file, "").unwrap();
+
+        let result = _convert_page(html_content, &html_file).unwrap();
+
+        let path = convert_file_src(&css_file).unwrap();
+        let expected = format!(
+            "<html><body><link rel=\"stylesheet\" href=\"{}\"/></body></html>",
+            path
+        );
+
+        assert_eq!(result, expected);
+    }
+
+    #[test]
+    fn test_convert_page_img_src_tag() {
+        use tempfile::TempDir;
+
+        let temp_dir = TempDir::new().unwrap();
+        let html_file = temp_dir.path().join("test.html");
+        let png_file = temp_dir.path().join("main.png");
+
+        let html_content =
+            r#"<html><body> <img class="fit-picture" src="main.png" alt="xxx" /></body></html>"#;
+        std::fs::write(&html_file, html_content).unwrap();
+        std::fs::write(&png_file, "").unwrap();
+
+        let result = _convert_page(html_content, &html_file).unwrap();
+
+        let path = convert_file_src(&png_file).unwrap();
+        let expected = format!(
+            "<html><body> <img class=\"fit-picture\" src=\"{}\" alt=\"xxx\" /></body></html>",
+            path
+        );
+
+        assert_eq!(result, expected);
+    }
+
+    #[test]
+    fn test_convert_page_img_src_tag_with_a_root_tag() {
+        use tempfile::TempDir;
+
+        let temp_dir = TempDir::new().unwrap();
+        let html_file = temp_dir.path().join("test.html");
+        let png_file = temp_dir.path().join("main.png");
+
+        let html_content =
+            r#"<html><body> <img class="fit-picture" src="/main.png" alt="xxx" /></body></html>"#;
+        std::fs::write(&html_file, html_content).unwrap();
+        std::fs::write(&png_file, "").unwrap();
+
+        let result = _convert_page(html_content, &html_file).unwrap();
+
+        let path = convert_file_src(&png_file).unwrap();
+        let expected = format!(
+            "<html><body> <img class=\"fit-picture\" src=\"{}\" alt=\"xxx\" /></body></html>",
+            path
+        );
+
+        assert_eq!(result, expected);
+    }
+
+    #[test]
+    fn test_convert_page_contain_both_script_and_a_tags() {
+        use tempfile::TempDir;
+
+        let temp_dir = TempDir::new().unwrap();
+        let html_file = temp_dir.path().join("test.html");
+        let js_file = temp_dir.path().join("main.js");
+
+        let html_content =
+            r#"<html><body><a href="main.js">foo</a><script src="main.js"></script></body></html>"#;
+        std::fs::write(&html_file, html_content).unwrap();
+        std::fs::write(&js_file, "").unwrap();
+
+        let result = _convert_page(html_content, &html_file).unwrap();
+
+        let path = convert_file_src(&js_file).unwrap();
+        let expected = format!(
+            "<html><body><a href=\"{}\">foo</a><script src=\"{}\"></script></body></html>",
+            path, path
+        );
+
+        assert_eq!(result, expected);
+    }
+
+    #[test]
+    fn test_convert_page_contain_both_script_and_a_tags_with_root_char() {
+        use tempfile::TempDir;
+
+        let temp_dir = TempDir::new().unwrap();
+        let html_file = temp_dir.path().join("test.html");
+        let js_file = temp_dir.path().join("main.js");
+
+        let html_content = r#"<html><body><a href="/main.js">foo</a><script src="/main.js"></script></body></html>"#;
+        std::fs::write(&html_file, html_content).unwrap();
+        std::fs::write(&js_file, "").unwrap();
+
+        let result = _convert_page(html_content, &html_file).unwrap();
+
+        let path = convert_file_src(&js_file).unwrap();
+        let expected = format!(
+            "<html><body><a href=\"{}\">foo</a><script src=\"{}\"></script></body></html>",
+            path, path
+        );
+
+        assert_eq!(result, expected);
+    }
+
+    #[test]
+    fn test_convert_page_empty_html() {
+        use tempfile::TempDir;
+
+        let temp_dir = TempDir::new().unwrap();
+        let html_file = temp_dir.path().join("test.html");
+
+        let html_content = "";
+        std::fs::write(&html_file, html_content).unwrap();
+        let result = _convert_page(html_content, &html_file).unwrap();
+        assert!(result.is_empty());
+    }
+
+    #[test]
+    fn test_convert_page_only_html_tag() {
+        use tempfile::TempDir;
+
+        let temp_dir = TempDir::new().unwrap();
+        let html_file = temp_dir.path().join("test.html");
+
+        let html_content = "<html></html>";
+        std::fs::write(&html_file, html_content).unwrap();
+        let result = _convert_page(html_content, &html_file).unwrap();
+        assert_eq!(result, html_content);
+    }
+}

src-tauri/src/extension/third_party/install/store.rs

@@ -0,0 +1,456 @@
+//! Extension store related stuff.
+
+use super::super::LOCAL_QUERY_SOURCE_TYPE;
+use super::is_extension_installed;
+use crate::common::document::DataSourceReference;
+use crate::common::document::Document;
+use crate::common::error::SearchError;
+use crate::common::search::QueryResponse;
+use crate::common::search::QuerySource;
+use crate::common::search::SearchQuery;
+use crate::common::traits::SearchSource;
+use crate::extension::Extension;
+use crate::extension::ExtensionType;
+use crate::extension::PLUGIN_JSON_FILE_NAME;
+use crate::extension::THIRD_PARTY_EXTENSIONS_SEARCH_SOURCE;
+use crate::extension::canonicalize_relative_icon_path;
+use crate::extension::canonicalize_relative_page_path;
+use crate::extension::third_party::check::general_check;
+use crate::extension::third_party::get_third_party_extension_directory;
+use crate::extension::third_party::install::convert_page;
+use crate::extension::third_party::install::filter_out_incompatible_sub_extensions;
+use crate::server::http_client::HttpClient;
+use crate::util::platform::Platform;
+use async_trait::async_trait;
+use reqwest::StatusCode;
+use serde_json::Map as JsonObject;
+use serde_json::Value as Json;
+use std::io::Read;
+use std::path::Path;
+use std::path::PathBuf;
+use tauri::AppHandle;
+
+const DATA_SOURCE_ID: &str = "Extension Store";
+
+pub(crate) struct ExtensionStore;
+
+#[async_trait]
+impl SearchSource for ExtensionStore {
+    fn get_type(&self) -> QuerySource {
+        QuerySource {
+            r#type: LOCAL_QUERY_SOURCE_TYPE.into(),
+            name: hostname::get()
+                .unwrap_or(DATA_SOURCE_ID.into())
+                .to_string_lossy()
+                .into(),
+            id: DATA_SOURCE_ID.into(),
+        }
+    }
+
+    async fn search(
+        &self,
+        _tauri_app_handle: AppHandle,
+        query: SearchQuery,
+    ) -> Result<QueryResponse, SearchError> {
+        const SCORE: f64 = 2000.0;
+
+        let Some(query_string) = query.query_strings.get("query") else {
+            return Ok(QueryResponse {
+                source: self.get_type(),
+                hits: Vec::new(),
+                total_hits: 0,
+            });
+        };
+
+        let lowercase_query_string = query_string.to_lowercase();
+        let expected_str = "extension store";
+
+        if expected_str.contains(&lowercase_query_string) {
+            let doc = Document {
+                id: DATA_SOURCE_ID.to_string(),
+                category: Some(DATA_SOURCE_ID.to_string()),
+                title: Some(DATA_SOURCE_ID.to_string()),
+                icon: Some("font_Store".to_string()),
+                source: Some(DataSourceReference {
+                    r#type: Some(LOCAL_QUERY_SOURCE_TYPE.into()),
+                    name: Some(DATA_SOURCE_ID.into()),
+                    id: Some(DATA_SOURCE_ID.into()),
+                    icon: Some("font_Store".to_string()),
+                }),
+                ..Default::default()
+            };
+
+            Ok(QueryResponse {
+                source: self.get_type(),
+                hits: vec![(doc, SCORE)],
+                total_hits: 1,
+            })
+        } else {
+            Ok(QueryResponse {
+                source: self.get_type(),
+                hits: Vec::new(),
+                total_hits: 0,
+            })
+        }
+    }
+}
+
+#[tauri::command]
+pub(crate) async fn search_extension(
+    query_params: Option<Vec<String>>,
+) -> Result<Vec<Json>, String> {
+    let response = HttpClient::get(
+        "default_coco_server",
+        "store/extension/_search",
+        query_params,
+    )
+    .await
+    .map_err(|e| format!("Failed to send request: {:?}", e))?;
+
+    // The response of a ES style search request
+    let mut response: JsonObject<String, Json> = response
+        .json()
+        .await
+        .map_err(|e| format!("Failed to parse response: {:?}", e))?;
+
+    let hits_json = response
+        .remove("hits")
+        .expect("the JSON response should contain field [hits]");
+    let mut hits = match hits_json {
+        Json::Object(obj) => obj,
+        _ => panic!(
+            "field [hits] should be a JSON object, but it is not, value: [{}]",
+            hits_json
+        ),
+    };
+
+    let Some(hits_hits_json) = hits.remove("hits") else {
+        return Ok(Vec::new());
+    };
+
+    let hits_hits = match hits_hits_json {
+        Json::Array(arr) => arr,
+        _ => panic!(
+            "field [hits.hits] should be an array, but it is not, value: [{}]",
+            hits_hits_json
+        ),
+    };
+
+    let mut extensions = Vec::with_capacity(hits_hits.len());
+    for hit in hits_hits {
+        let mut hit_obj = match hit {
+            Json::Object(obj) => obj,
+            _ => panic!(
+                "each hit in [hits.hits] should be a JSON object, but it is not, value: [{}]",
+                hit
+            ),
+        };
+        let source = hit_obj
+            .remove("_source")
+            .expect("each hit should contain field [_source]");
+
+        let mut source_obj = match source {
+            Json::Object(obj) => obj,
+            _ => panic!(
+                "field [_source] should be a JSON object, but it is not, value: [{}]",
+                source
+            ),
+        };
+
+        let developer_id = source_obj
+            .get("developer")
+            .and_then(|dev| dev.get("id"))
+            .and_then(|id| id.as_str())
+            .expect("developer.id should exist");
+
+        let extension_id = source_obj
+            .get("id")
+            .and_then(|id| id.as_str())
+            .expect("extension id should exist");
+
+        let installed = is_extension_installed(developer_id, extension_id).await;
+        source_obj.insert("installed".to_string(), Json::Bool(installed));
+
+        extensions.push(Json::Object(source_obj));
+    }
+
+    Ok(extensions)
+}
+
+#[tauri::command]
+pub(crate) async fn extension_detail(
+    id: String,
+) -> Result<Option<JsonObject<String, Json>>, String> {
+    let path = format!("store/extension/{}", id);
+    let response = HttpClient::get("default_coco_server", path.as_str(), None)
+        .await
+        .map_err(|e| format!("Failed to send request: {:?}", e))?;
+
+    if response.status() == StatusCode::NOT_FOUND {
+        return Ok(None);
+    }
+
+    let response_dbg_str = format!("{:?}", response);
+    // The response of an ES style GET request
+    let mut response: JsonObject<String, Json> = response.json().await.unwrap_or_else(|_e| {
+        panic!(
+            "response body of [/store/extension/<ID>] is not a JSON object, response [{:?}]",
+            response_dbg_str
+        )
+    });
+    let source_json = response.remove("_source").unwrap_or_else(|| {
+        panic!("field [_source] not found in the JSON returned from [/store/extension/<ID>]")
+    });
+    let mut source_obj = match source_json {
+        Json::Object(obj) => obj,
+        _ => panic!(
+            "field [_source] should be a JSON object, but it is not, value: [{}]",
+            source_json
+        ),
+    };
+
+    let developer_id = match &source_obj["developer"]["id"] {
+        Json::String(dev) => dev,
+        _ => {
+            panic!(
+                "field [_source.developer.id] should be a string, but it is not, value: [{}]",
+                source_obj["developer"]["id"]
+            )
+        }
+    };
+    let installed = is_extension_installed(developer_id, &id).await;
+    source_obj.insert("installed".to_string(), Json::Bool(installed));
+
+    Ok(Some(source_obj))
+}
+
+#[tauri::command]
+pub(crate) async fn install_extension_from_store(
+    tauri_app_handle: AppHandle,
+    id: String,
+) -> Result<(), String> {
+    let path = format!("store/extension/{}/_download", id);
+    let response = HttpClient::get("default_coco_server", &path, None)
+        .await
+        .map_err(|e| format!("Failed to download extension: {}", e))?;
+
+    if response.status() == StatusCode::NOT_FOUND {
+        return Err(format!("extension [{}] not found", id));
+    }
+
+    let bytes = response
+        .bytes()
+        .await
+        .map_err(|e| format!("Failed to read response bytes: {}", e))?;
+
+    let cursor = std::io::Cursor::new(bytes);
+    let mut archive =
+        zip::ZipArchive::new(cursor).map_err(|e| format!("Failed to read zip archive: {}", e))?;
+
+    // The plugin.json sent from the server does not conform to our `struct Extension` definition:
+    //
+    // 1. Its `developer` field is a JSON object, but we need a string
+    // 2. sub-extensions won't have their `id` fields set
+    //
+    // we need to correct it
+    let mut plugin_json = archive
+        .by_name(PLUGIN_JSON_FILE_NAME)
+        .map_err(|e| e.to_string())?;
+    let mut plugin_json_content = String::new();
+    std::io::Read::read_to_string(&mut plugin_json, &mut plugin_json_content)
+        .map_err(|e| e.to_string())?;
+    let mut extension: Json = serde_json::from_str(&plugin_json_content)
+        .map_err(|e| format!("Failed to parse plugin.json: {}", e))?;
+
+    let mut_ref_to_developer_object: &mut Json = extension
+        .as_object_mut()
+        .expect("plugin.json should be an object")
+        .get_mut("developer")
+        .expect("plugin.json should contain field [developer]");
+    let developer_id = mut_ref_to_developer_object
+        .get("id")
+        .expect("plugin.json should contain [developer.id]")
+        .as_str()
+        .expect("plugin.json field [developer.id] should be a string");
+    *mut_ref_to_developer_object = Json::String(developer_id.into());
+
+    // Set IDs for sub-extensions (commands, quicklinks, scripts)
+    let mut counter = 0;
+    // Helper function to set IDs for array fields
+    fn set_ids_for_field(extension: &mut Json, field_name: &str, counter: &mut i32) {
+        if let Some(field) = extension.as_object_mut().unwrap().get_mut(field_name) {
+            if let Some(array) = field.as_array_mut() {
+                for item in array {
+                    if let Some(item_obj) = item.as_object_mut() {
+                        if !item_obj.contains_key("id") {
+                            item_obj.insert("id".to_string(), Json::String(counter.to_string()));
+                            *counter += 1;
+                        }
+                    }
+                }
+            }
+        }
+    }
+    set_ids_for_field(&mut extension, "commands", &mut counter);
+    set_ids_for_field(&mut extension, "quicklinks", &mut counter);
+    set_ids_for_field(&mut extension, "scripts", &mut counter);
+
+    // Now the extension JSON is valid
+    let mut extension: Extension = serde_json::from_value(extension).unwrap_or_else(|e| {
+        panic!(
+            "cannot parse plugin.json as struct Extension, error [{:?}]",
+            e
+        );
+    });
+    let developer_id = extension.developer.clone().expect("developer has been set");
+
+    drop(plugin_json);
+
+    general_check(&extension)?;
+
+    let current_platform = Platform::current();
+    if let Some(ref platforms) = extension.platforms {
+        if !platforms.contains(&current_platform) {
+            return Err("this extension is not compatible with your OS".into());
+        }
+    }
+
+    if is_extension_installed(&developer_id, &id).await {
+        return Err("Extension already installed.".into());
+    }
+
+    // Extension is compatible with current platform, but it could contain sub
+    // extensions that are not, filter them out.
+    filter_out_incompatible_sub_extensions(&mut extension, current_platform);
+
+    // We are going to modify our third-party extension list, grab the write lock
+    // to ensure exclusive access.
+    let mut third_party_ext_list_write_lock = THIRD_PARTY_EXTENSIONS_SEARCH_SOURCE
+        .get()
+        .expect("global third party search source not set")
+        .write_lock()
+        .await;
+
+    // Write extension files to the extension directory
+    let extension_id = extension.id.clone();
+    let extension_directory = {
+        let mut path = get_third_party_extension_directory(&tauri_app_handle);
+        path.push(developer_id);
+        path.push(extension_id.as_str());
+        path
+    };
+    tokio::fs::create_dir_all(extension_directory.as_path())
+        .await
+        .map_err(|e| e.to_string())?;
+
+    // Extract all files except plugin.json
+    for i in 0..archive.len() {
+        let mut zip_file = archive.by_index(i).map_err(|e| e.to_string())?;
+        // `.name()` is safe to use in our cases, the cases listed in the below
+        // page won't happen to us.
+        //
+        // https://docs.rs/zip/4.2.0/zip/read/struct.ZipFile.html#method.name
+        //
+        // Example names:
+        //
+        // * `assets/icon.png`
+        // * `assets/screenshot.png`
+        // * `plugin.json`
+        //
+        // Yes, the `assets` directory is not a part of it.
+        let zip_file_name = zip_file.name();
+
+        // Skip the plugin.json file as we'll create it from the extension variable
+        if zip_file_name == PLUGIN_JSON_FILE_NAME {
+            continue;
+        }
+
+        let dest_file_path = extension_directory.join(zip_file_name);
+
+        // For cases like `assets/xxx.png`
+        if let Some(parent_dir) = dest_file_path.parent()
+            && !parent_dir.exists()
+        {
+            tokio::fs::create_dir_all(parent_dir)
+                .await
+                .map_err(|e| e.to_string())?;
+        }
+
+        let mut dest_file = tokio::fs::File::create(&dest_file_path)
+            .await
+            .map_err(|e| e.to_string())?;
+        let mut src_bytes = Vec::with_capacity(
+            zip_file
+                .size()
+                .try_into()
+                .expect("we won't have a extension file that is bigger than 4GiB"),
+        );
+        zip_file
+            .read_to_end(&mut src_bytes)
+            .map_err(|e| e.to_string())?;
+        tokio::io::copy(&mut src_bytes.as_slice(), &mut dest_file)
+            .await
+            .map_err(|e| e.to_string())?;
+    }
+    // Create plugin.json from the extension variable
+    let plugin_json_path = extension_directory.join(PLUGIN_JSON_FILE_NAME);
+    let extension_json = serde_json::to_string_pretty(&extension).map_err(|e| e.to_string())?;
+    tokio::fs::write(&plugin_json_path, extension_json)
+        .await
+        .map_err(|e| e.to_string())?;
+
+    /*
+     * Call convert_page() to update the page files.  This has to be done after
+     * writing the extension files
+     */
+    let absolute_page_paths: Vec<PathBuf> = {
+        fn canonicalize_page_path(page_path: &Path, extension_root: &Path) -> PathBuf {
+            if page_path.is_relative() {
+                // It is relative to the extension root directory
+                extension_root.join(page_path)
+            } else {
+                page_path.into()
+            }
+        }
+
+        if extension.r#type == ExtensionType::View {
+            let page = extension
+                .page
+                .as_ref()
+                .expect("View extension should set its page field");
+            let path = canonicalize_page_path(Path::new(page.as_str()), &extension_directory);
+
+            vec![path]
+        } else if extension.r#type.contains_sub_items()
+            && let Some(ref views) = extension.views
+        {
+            let mut paths = Vec::with_capacity(views.len());
+
+            for view in views.iter() {
+                let page = view
+                    .page
+                    .as_ref()
+                    .expect("View extension should set its page field");
+                let path = canonicalize_page_path(Path::new(page.as_str()), &extension_directory);
+
+                paths.push(path);
+            }
+
+            paths
+        } else {
+            // No pages in this extension
+            Vec::new()
+        }
+    };
+    for page_path in absolute_page_paths {
+        convert_page(&page_path).await?;
+    }
+
+    // Canonicalize relative icon and page paths
+    canonicalize_relative_icon_path(&extension_directory, &mut extension)?;
+    canonicalize_relative_page_path(&extension_directory, &mut extension)?;
+
+    third_party_ext_list_write_lock.push(extension);
+
+    Ok(())
+}

src-tauri/src/extension/third_party/mod.rs

@@ -0,0 +1,910 @@
+pub(crate) mod check;
+pub(crate) mod install;
+
+use super::Extension;
+use super::LOCAL_QUERY_SOURCE_TYPE;
+use super::PLUGIN_JSON_FILE_NAME;
+use super::alter_extension_json_file;
+use super::canonicalize_relative_icon_path;
+use crate::common::document::DataSourceReference;
+use crate::common::document::Document;
+use crate::common::document::open;
+use crate::common::error::SearchError;
+use crate::common::search::QueryResponse;
+use crate::common::search::QuerySource;
+use crate::common::search::SearchQuery;
+use crate::common::traits::SearchSource;
+use crate::extension::ExtensionBundleIdBorrowed;
+use crate::extension::calculate_text_similarity;
+use crate::extension::canonicalize_relative_page_path;
+use crate::util::platform::Platform;
+use async_trait::async_trait;
+use borrowme::ToOwned;
+use check::general_check;
+use function_name::named;
+use std::io::ErrorKind;
+use std::path::Path;
+use std::path::PathBuf;
+use std::sync::Arc;
+use std::sync::OnceLock;
+use tauri::AppHandle;
+use tauri::Manager;
+use tauri::async_runtime;
+use tauri_plugin_global_shortcut::GlobalShortcutExt;
+use tauri_plugin_global_shortcut::ShortcutState;
+use tokio::fs::read_dir;
+use tokio::sync::RwLock;
+use tokio::sync::RwLockWriteGuard;
+
+pub(crate) fn get_third_party_extension_directory(tauri_app_handle: &AppHandle) -> PathBuf {
+    let mut app_data_dir = tauri_app_handle.path().app_data_dir().expect(
+        "User home directory not found, which should be impossible on desktop environments",
+    );
+    app_data_dir.push("third_party_extensions");
+
+    app_data_dir
+}
+
+pub(crate) async fn load_third_party_extensions_from_directory(
+    directory: &Path,
+) -> Result<Vec<Extension>, String> {
+    let mut extensions_dir_iter = read_dir(&directory).await.map_err(|e| e.to_string())?;
+    let current_platform = Platform::current();
+
+    let mut extensions = Vec::new();
+
+    'developer: loop {
+        let opt_developer_dir = extensions_dir_iter
+            .next_entry()
+            .await
+            .map_err(|e| e.to_string())?;
+        let Some(developer_dir) = opt_developer_dir else {
+            break;
+        };
+        let developer_dir_file_type = developer_dir.file_type().await.map_err(|e| e.to_string())?;
+        if !developer_dir_file_type.is_dir() {
+            log::warn!(
+                "file [{}] under the third party extension directory should be a directory, but it is not",
+                developer_dir.file_name().display()
+            );
+
+            // Skip this file
+            continue 'developer;
+        }
+
+        let mut developer_dir_iter = read_dir(&developer_dir.path())
+            .await
+            .map_err(|e| e.to_string())?;
+
+        'extension: loop {
+            let opt_extension_dir = developer_dir_iter
+                .next_entry()
+                .await
+                .map_err(|e| e.to_string())?;
+            let Some(extension_dir) = opt_extension_dir else {
+                break 'extension;
+            };
+            let extension_dir_file_name = extension_dir
+                .file_name()
+                .into_string()
+                .expect("extension directory name should be UTF-8 encoded");
+
+            let extension_dir_file_type =
+                extension_dir.file_type().await.map_err(|e| e.to_string())?;
+            if !extension_dir_file_type.is_dir() {
+                log::warn!(
+                    "invalid extension [{}]: a valid extension should be a directory, but it is not",
+                    extension_dir_file_name
+                );
+
+                // Skip invalid extension
+                continue 'extension;
+            }
+
+            let plugin_json_file_path = {
+                let mut path = extension_dir.path();
+                path.push(PLUGIN_JSON_FILE_NAME);
+
+                path
+            };
+
+            if !plugin_json_file_path.is_file() {
+                log::warn!(
+                    "invalid extension: [{}]: extension file [{}] should be a JSON file, but it is not",
+                    extension_dir.file_name().display(),
+                    plugin_json_file_path.display()
+                );
+
+                // Skip invalid extension
+                continue 'extension;
+            }
+
+            let plugin_json_file_content = tokio::fs::read_to_string(&plugin_json_file_path)
+                .await
+                .map_err(|e| e.to_string())?;
+            let mut extension = match serde_json::from_str::<Extension>(&plugin_json_file_content) {
+                Ok(extension) => extension,
+                Err(e) => {
+                    log::warn!(
+                        "invalid extension: [{}]: cannot parse file [{}] as a [struct Extension], error: '{}'",
+                        extension_dir_file_name,
+                        plugin_json_file_path.display(),
+                        e
+                    );
+                    continue 'extension;
+                }
+            };
+
+            /* Check starts here */
+            if extension.id != extension_dir_file_name {
+                log::warn!(
+                    "extension under [{}:{}] has an ID that is not same as the [{}]",
+                    developer_dir.file_name().display(),
+                    extension_dir_file_name,
+                    extension.id,
+                );
+
+                continue;
+            }
+
+            // Extension should be unique
+            if extensions.iter().any(|ext: &Extension| {
+                ext.id == extension.id && ext.developer == extension.developer
+            }) {
+                log::warn!(
+                    "an extension with the same bundle ID [ID {}, developer {:?}] already exists, skip this one",
+                    extension.id,
+                    extension.developer
+                );
+
+                continue;
+            }
+
+            if let Err(error_msg) = general_check(&extension) {
+                log::warn!("{}", error_msg);
+
+                // Skip invalid extension
+                continue;
+            }
+
+            if let Some(ref platforms) = extension.platforms {
+                if !platforms.contains(&current_platform) {
+                    log::warn!(
+                        "installed third-party extension [developer {}, ID {}] is not compatible with current platform, either user messes our directory or something wrong with our extension check",
+                        extension
+                            .developer
+                            .as_ref()
+                            .expect("third party extension should have [developer] set"),
+                        extension.id
+                    );
+                    continue;
+                }
+            }
+            /* Check ends here */
+
+            // Turn it into an absolute path if it is a valid relative path because frontend code needs this.
+            canonicalize_relative_icon_path(&extension_dir.path(), &mut extension)?;
+            canonicalize_relative_page_path(&extension_dir.path(), &mut extension)?;
+
+            extensions.push(extension);
+        }
+    }
+
+    log::debug!(
+        "loaded extensions: {:?}",
+        extensions
+            .iter()
+            .map(|ext| ext.id.as_str())
+            .collect::<Vec<_>>()
+    );
+
+    Ok(extensions)
+}
+
+/// All the third-party extensions will be registered as one search source.
+///
+/// Since some `#[tauri::command]`s need to access it, we store it in a global
+/// static variable as well.
+#[derive(Debug, Clone)]
+pub(crate) struct ThirdPartyExtensionsSearchSource {
+    inner: Arc<ThirdPartyExtensionsSearchSourceInner>,
+}
+
+impl ThirdPartyExtensionsSearchSource {
+    /// Return a mutable reference to the extension specified by `bundle_id` if it exists.
+    fn get_extension_mut<'lock, 'extensions>(
+        extensions_write_lock: &'lock mut RwLockWriteGuard<'extensions, Vec<Extension>>,
+        bundle_id: &ExtensionBundleIdBorrowed<'_>,
+    ) -> Option<&'lock mut Extension> {
+        let index = extensions_write_lock.iter().position(|ext| {
+            ext.id == bundle_id.extension_id && ext.developer.as_deref() == bundle_id.developer
+        })?;
+
+        let extension = extensions_write_lock
+            .get_mut(index)
+            .expect("just checked this extension exists");
+
+        let Some(sub_extension_id) = bundle_id.sub_extension_id else {
+            return Some(extension);
+        };
+
+        extension.get_sub_extension_mut(sub_extension_id)
+    }
+
+    /// Difference between this function and `enable_extension()`
+    ///
+    /// This function does the actual job, i.e., to enable/activate the extension.
+    /// `enable_extension()` needs to do 1 extra thing, update the enabled state.
+    ///
+    /// Note that when you enable a parent extension, its **enabled** children extensions
+    /// should also be enabled.
+    #[async_recursion::async_recursion]
+    async fn _enable_extension(
+        tauri_app_handle: &AppHandle,
+        extension: &Extension,
+    ) -> Result<(), String> {
+        if extension.supports_alias_hotkey() {
+            if let Some(ref hotkey) = extension.hotkey {
+                let on_opened = extension.on_opened().unwrap_or_else(|| panic!( "extension has hotkey, but on_open() returns None, extension ID [{}], extension type [{:?}]", extension.id, extension.r#type));
+
+                let extension_id_clone = extension.id.clone();
+
+                tauri_app_handle
+                    .global_shortcut()
+                    .on_shortcut(hotkey.as_str(), move |tauri_app_handle, _hotkey, event| {
+                        let on_opened_clone = on_opened.clone();
+                        let extension_id_clone = extension_id_clone.clone();
+                        let app_handle_clone = tauri_app_handle.clone();
+
+                        if event.state() == ShortcutState::Pressed {
+                            async_runtime::spawn(async move {
+                                let result = open(app_handle_clone, on_opened_clone, None).await;
+                                if let Err(msg) = result {
+                                    log::warn!(
+                                        "failed to open extension [{}], error [{}]",
+                                        extension_id_clone,
+                                        msg
+                                    );
+                                }
+                            });
+                        }
+                    })
+                    .map_err(|e| e.to_string())?;
+            }
+        }
+
+        // We also need to enable its **enabled** children extensions.
+        if extension.r#type.contains_sub_items() {
+            if let Some(commands) = &extension.commands {
+                for command in commands.iter().filter(|ext| ext.enabled) {
+                    Self::_enable_extension(&tauri_app_handle, command).await?;
+                }
+            }
+
+            if let Some(scripts) = &extension.scripts {
+                for script in scripts.iter().filter(|ext| ext.enabled) {
+                    Self::_enable_extension(&tauri_app_handle, script).await?;
+                }
+            }
+
+            if let Some(quicklinks) = &extension.quicklinks {
+                for quicklink in quicklinks.iter().filter(|ext| ext.enabled) {
+                    Self::_enable_extension(&tauri_app_handle, quicklink).await?;
+                }
+            }
+            if let Some(views) = &extension.views {
+                for view in views.iter().filter(|ext| ext.enabled) {
+                    Self::_enable_extension(&tauri_app_handle, view).await?;
+                }
+            }
+        }
+
+        Ok(())
+    }
+
+    /// Difference between this function and `disable_extension()`
+    ///
+    /// See the doc of `_enable_extension()`.
+    ///
+    /// Note that when you disable a parent extension, its **enabled** children extensions
+    /// should also be disabled.
+    #[async_recursion::async_recursion]
+    async fn _disable_extension(
+        tauri_app_handle: &AppHandle,
+        extension: &Extension,
+    ) -> Result<(), String> {
+        if let Some(ref hotkey) = extension.hotkey {
+            tauri_app_handle
+                .global_shortcut()
+                .unregister(hotkey.as_str())
+                .map_err(|e| e.to_string())?;
+        }
+
+        // We also need to disable its **enabled** children extensions.
+        if extension.r#type.contains_sub_items() {
+            if let Some(commands) = &extension.commands {
+                for command in commands.iter().filter(|ext| ext.enabled) {
+                    Self::_disable_extension(tauri_app_handle, command).await?;
+                }
+            }
+
+            if let Some(scripts) = &extension.scripts {
+                for script in scripts.iter().filter(|ext| ext.enabled) {
+                    Self::_disable_extension(tauri_app_handle, script).await?;
+                }
+            }
+
+            if let Some(quicklinks) = &extension.quicklinks {
+                for quicklink in quicklinks.iter().filter(|ext| ext.enabled) {
+                    Self::_disable_extension(tauri_app_handle, quicklink).await?;
+                }
+            }
+            if let Some(views) = &extension.views {
+                for view in views.iter().filter(|ext| ext.enabled) {
+                    Self::_disable_extension(tauri_app_handle, view).await?;
+                }
+            }
+        }
+
+        Ok(())
+    }
+
+    pub(super) fn new(extensions: Vec<Extension>) -> Self {
+        Self {
+            inner: Arc::new(ThirdPartyExtensionsSearchSourceInner {
+                extensions: RwLock::new(extensions),
+            }),
+        }
+    }
+
+    /// Acquire the write lock to the extension list.
+    pub(crate) async fn write_lock(&self) -> RwLockWriteGuard<'_, Vec<Extension>> {
+        self.inner.extensions.write().await
+    }
+
+    #[named]
+    pub(super) async fn enable_extension(
+        &self,
+        tauri_app_handle: &AppHandle,
+        bundle_id: &ExtensionBundleIdBorrowed<'_>,
+    ) -> Result<(), String> {
+        let mut extensions_write_lock = self.inner.extensions.write().await;
+        let extension =
+            Self::get_extension_mut(&mut extensions_write_lock, bundle_id).ok_or_else(|| {
+                format!(
+                    "{} invoked with an extension that does not exist [{:?}]",
+                    function_name!(),
+                    bundle_id
+                )
+            })?;
+
+        let update_extension = |ext: &mut Extension| -> Result<(), String> {
+            if ext.enabled {
+                return Err(format!(
+                    "{} invoked with an extension that is already enabled [{:?}]",
+                    function_name!(),
+                    bundle_id
+                ));
+            }
+            ext.enabled = true;
+
+            Ok(())
+        };
+
+        update_extension(extension)?;
+        alter_extension_json_file(
+            &get_third_party_extension_directory(tauri_app_handle),
+            bundle_id,
+            update_extension,
+        )?;
+        Self::_enable_extension(tauri_app_handle, extension).await?;
+
+        Ok(())
+    }
+
+    #[named]
+    pub(super) async fn disable_extension(
+        &self,
+        tauri_app_handle: &AppHandle,
+        bundle_id: &ExtensionBundleIdBorrowed<'_>,
+    ) -> Result<(), String> {
+        let mut extensions_write_lock = self.inner.extensions.write().await;
+        let extension =
+            Self::get_extension_mut(&mut extensions_write_lock, bundle_id).ok_or_else(|| {
+                format!(
+                    "{} invoked with an extension that does not exist [{:?}]",
+                    function_name!(),
+                    bundle_id
+                )
+            })?;
+
+        let update_extension = |ext: &mut Extension| -> Result<(), String> {
+            if !ext.enabled {
+                return Err(format!(
+                    "{} invoked with an extension that is already enabled [{:?}]",
+                    function_name!(),
+                    bundle_id
+                ));
+            }
+            ext.enabled = false;
+
+            Ok(())
+        };
+
+        update_extension(extension)?;
+        alter_extension_json_file(
+            &get_third_party_extension_directory(tauri_app_handle),
+            bundle_id,
+            update_extension,
+        )?;
+        Self::_disable_extension(tauri_app_handle, extension).await?;
+
+        Ok(())
+    }
+
+    #[named]
+    pub(super) async fn set_extension_alias(
+        &self,
+        tauri_app_handle: &AppHandle,
+        bundle_id: &ExtensionBundleIdBorrowed<'_>,
+        alias: &str,
+    ) -> Result<(), String> {
+        let mut extensions_write_lock = self.inner.extensions.write().await;
+        let extension =
+            Self::get_extension_mut(&mut extensions_write_lock, bundle_id).ok_or_else(|| {
+                format!(
+                    "{} invoked with an extension that does not exist [{:?}]",
+                    function_name!(),
+                    bundle_id
+                )
+            })?;
+
+        let update_extension = |ext: &mut Extension| -> Result<(), String> {
+            ext.alias = Some(alias.to_string());
+            Ok(())
+        };
+
+        update_extension(extension)?;
+        alter_extension_json_file(
+            &get_third_party_extension_directory(tauri_app_handle),
+            bundle_id,
+            update_extension,
+        )?;
+
+        Ok(())
+    }
+
+    /// Initialize the third-party extensions, which literally means
+    /// enabling/activating the enabled extensions.
+    pub(crate) async fn init(&self, tauri_app_handle: &AppHandle) -> Result<(), String> {
+        let extensions_read_lock = self.inner.extensions.read().await;
+
+        for extension in extensions_read_lock.iter().filter(|ext| ext.enabled) {
+            Self::_enable_extension(tauri_app_handle, extension).await?;
+        }
+
+        Ok(())
+    }
+
+    #[named]
+    pub(super) async fn register_extension_hotkey(
+        &self,
+        tauri_app_handle: &AppHandle,
+        bundle_id: &ExtensionBundleIdBorrowed<'_>,
+        hotkey: &str,
+    ) -> Result<(), String> {
+        self.unregister_extension_hotkey(tauri_app_handle, bundle_id)
+            .await?;
+
+        let mut extensions_write_lock = self.inner.extensions.write().await;
+        let extension =
+            Self::get_extension_mut(&mut extensions_write_lock, bundle_id).ok_or_else(|| {
+                format!(
+                    "{} invoked with an extension that does not exist [{:?}]",
+                    function_name!(),
+                    bundle_id
+                )
+            })?;
+
+        let update_extension = |ext: &mut Extension| -> Result<(), String> {
+            ext.hotkey = Some(hotkey.into());
+            Ok(())
+        };
+
+        // Update extension (memory and file)
+        update_extension(extension)?;
+        alter_extension_json_file(
+            &get_third_party_extension_directory(tauri_app_handle),
+            bundle_id,
+            update_extension,
+        )?;
+
+        // Set hotkey
+        let on_opened = extension.on_opened().unwrap_or_else(|| panic!(
+            "setting hotkey for an extension that cannot be opened, extension ID [{:?}], extension type [{:?}]", bundle_id, extension.r#type,
+        ));
+
+        let bundle_id_owned = bundle_id.to_owned();
+        tauri_app_handle
+            .global_shortcut()
+            .on_shortcut(hotkey, move |tauri_app_handle, _hotkey, event| {
+                let on_opened_clone = on_opened.clone();
+                let bundle_id_clone = bundle_id_owned.clone();
+                let app_handle_clone = tauri_app_handle.clone();
+
+                if event.state() == ShortcutState::Pressed {
+                    async_runtime::spawn(async move {
+                        let result = open(app_handle_clone, on_opened_clone, None).await;
+                        if let Err(msg) = result {
+                            log::warn!(
+                                "failed to open extension [{:?}], error [{}]",
+                                bundle_id_clone,
+                                msg
+                            );
+                        }
+                    });
+                }
+            })
+            .map_err(|e| e.to_string())?;
+
+        Ok(())
+    }
+
+    /// NOTE: this function won't error out if the extension specified by `extension_id`
+    /// has no hotkey set because we need it to behave like this.
+    #[named]
+    pub(super) async fn unregister_extension_hotkey(
+        &self,
+        tauri_app_handle: &AppHandle,
+        bundle_id: &ExtensionBundleIdBorrowed<'_>,
+    ) -> Result<(), String> {
+        let mut extensions_write_lock = self.inner.extensions.write().await;
+        let extension =
+            Self::get_extension_mut(&mut extensions_write_lock, bundle_id).ok_or_else(|| {
+                format!(
+                    "{} invoked with an extension that does not exist [{:?}]",
+                    function_name!(),
+                    bundle_id
+                )
+            })?;
+
+        let Some(hotkey) = extension.hotkey.clone() else {
+            log::warn!(
+                "extension [{:?}] has no hotkey set, but we are trying to unregister it",
+                bundle_id
+            );
+            return Ok(());
+        };
+
+        let update_extension = |extension: &mut Extension| -> Result<(), String> {
+            extension.hotkey = None;
+            Ok(())
+        };
+
+        update_extension(extension)?;
+        alter_extension_json_file(
+            &get_third_party_extension_directory(tauri_app_handle),
+            bundle_id,
+            update_extension,
+        )?;
+
+        // Set hotkey
+        tauri_app_handle
+            .global_shortcut()
+            .unregister(hotkey.as_str())
+            .map_err(|e| e.to_string())?;
+
+        Ok(())
+    }
+
+    #[named]
+    pub(super) async fn is_extension_enabled(
+        &self,
+        bundle_id: &ExtensionBundleIdBorrowed<'_>,
+    ) -> Result<bool, String> {
+        let extensions_read_lock = self.inner.extensions.read().await;
+
+        let root_extension = extensions_read_lock
+            .iter()
+            .find(|root_ext| {
+                root_ext.id == bundle_id.extension_id
+                    && root_ext.developer.as_deref() == bundle_id.developer
+            })
+            .ok_or_else(|| {
+                format!(
+                    "{} invoked with an extension that does not exist [{:?}]",
+                    function_name!(),
+                    bundle_id
+                )
+            })?;
+
+        let Some(sub_extension_id) = bundle_id.sub_extension_id else {
+            // bundle_id points to a root extension, so our job is done.
+            return Ok(root_extension.enabled);
+        };
+
+        let sub_extension = root_extension
+            .get_sub_extension(sub_extension_id)
+            .ok_or_else(|| {
+                format!(
+                    "{} invoked with an extension that does not exist [{:?}]",
+                    function_name!(),
+                    bundle_id
+                )
+            })?;
+
+        // For a sub-extension, it is enabled iff:
+        //
+        // 1. Its parent extension is enabled, and
+        // 2. It is enabled
+        Ok(root_extension.enabled && sub_extension.enabled)
+    }
+
+    pub(crate) async fn extension_exists(&self, developer: &str, extension_id: &str) -> bool {
+        let read_lock_guard = self.inner.extensions.read().await;
+        read_lock_guard
+            .iter()
+            .any(|ext| ext.developer.as_deref() == Some(developer) && ext.id == extension_id)
+    }
+
+    pub(crate) async fn uninstall_extension(
+        &self,
+        tauri_app_handle: &AppHandle,
+        developer: &str,
+        extension_id: &str,
+    ) -> Result<(), String> {
+        let mut write_lock = self.inner.extensions.write().await;
+
+        let Some(index) = write_lock
+            .iter()
+            .position(|ext| ext.developer.as_deref() == Some(developer) && ext.id == extension_id)
+        else {
+            return Err(format!(
+                "The extension we are trying to uninstall [{}/{}] does not exist",
+                developer, extension_id
+            ));
+        };
+        let deleted_extension = write_lock.remove(index);
+
+        let extension_dir = {
+            let mut path = get_third_party_extension_directory(&tauri_app_handle);
+            path.push(developer);
+            path.push(extension_id);
+
+            path
+        };
+
+        if let Err(e) = tokio::fs::remove_dir_all(extension_dir.as_path()).await {
+            let error_kind = e.kind();
+            if error_kind == ErrorKind::NotFound {
+                // We accept this error because we do want it to not exist.  But
+                // since it is not a state we expect, throw a warning.
+                log::warn!(
+                    "trying to uninstalling extension [developer {} id {}], but its directory does not exist",
+                    developer,
+                    extension_id
+                );
+            } else {
+                return Err(format!(
+                    "failed to uninstall extension [developer {} id {}] due to error {}",
+                    developer, extension_id, e
+                ));
+            }
+        }
+
+        // Unregister the extension hotkey, if set.
+        //
+        // Unregistering hotkey is the only thing that we will do when we disable
+        // an extension, so we directly use this function here even though "disabling"
+        // the extension that one is trying to uninstall does not make too much sense.
+        Self::_disable_extension(&tauri_app_handle, &deleted_extension).await?;
+
+        Ok(())
+    }
+
+    /// Take a point-in-time snapshot at the extension list and return it.
+    pub(crate) async fn extensions_snapshot(&self) -> Vec<Extension> {
+        self.inner.extensions.read().await.clone()
+    }
+}
+
+pub(crate) static THIRD_PARTY_EXTENSIONS_SEARCH_SOURCE: OnceLock<ThirdPartyExtensionsSearchSource> =
+    OnceLock::new();
+
+#[derive(Debug)]
+struct ThirdPartyExtensionsSearchSourceInner {
+    extensions: RwLock<Vec<Extension>>,
+}
+
+#[async_trait]
+impl SearchSource for ThirdPartyExtensionsSearchSource {
+    fn get_type(&self) -> QuerySource {
+        QuerySource {
+            r#type: LOCAL_QUERY_SOURCE_TYPE.into(),
+            name: hostname::get()
+                .unwrap_or("My Computer".into())
+                .to_string_lossy()
+                .into(),
+            id: "extensions".into(),
+        }
+    }
+
+    async fn search(
+        &self,
+        _tauri_app_handle: AppHandle,
+        query: SearchQuery,
+    ) -> Result<QueryResponse, SearchError> {
+        let Some(query_string) = query.query_strings.get("query") else {
+            return Ok(QueryResponse {
+                source: self.get_type(),
+                hits: Vec::new(),
+                total_hits: 0,
+            });
+        };
+
+        let opt_data_source = query
+            .query_strings
+            .get("datasource")
+            .map(|owned_str| owned_str.to_string());
+
+        let query_lower = query_string.to_lowercase();
+        let inner_clone = Arc::clone(&self.inner);
+
+        let closure = move || {
+            let mut hits = Vec::new();
+            let extensions_read_lock =
+                futures::executor::block_on(async { inner_clone.extensions.read().await });
+
+            for extension in extensions_read_lock.iter().filter(|ext| ext.enabled) {
+                if extension.r#type.contains_sub_items() {
+                    if let Some(ref commands) = extension.commands {
+                        for command in commands.iter().filter(|cmd| cmd.enabled) {
+                            if let Some(hit) =
+                                extension_to_hit(command, &query_lower, opt_data_source.as_deref())
+                            {
+                                hits.push(hit);
+                            }
+                        }
+                    }
+
+                    if let Some(ref scripts) = extension.scripts {
+                        for script in scripts.iter().filter(|script| script.enabled) {
+                            if let Some(hit) =
+                                extension_to_hit(script, &query_lower, opt_data_source.as_deref())
+                            {
+                                hits.push(hit);
+                            }
+                        }
+                    }
+
+                    if let Some(ref quicklinks) = extension.quicklinks {
+                        for quicklink in quicklinks.iter().filter(|link| link.enabled) {
+                            if let Some(hit) = extension_to_hit(
+                                quicklink,
+                                &query_lower,
+                                opt_data_source.as_deref(),
+                            ) {
+                                hits.push(hit);
+                            }
+                        }
+                    }
+
+                    if let Some(ref views) = extension.views {
+                        for view in views.iter().filter(|link| link.enabled) {
+                            if let Some(hit) =
+                                extension_to_hit(view, &query_lower, opt_data_source.as_deref())
+                            {
+                                hits.push(hit);
+                            }
+                        }
+                    }
+                } else {
+                    if let Some(hit) =
+                        extension_to_hit(extension, &query_lower, opt_data_source.as_deref())
+                    {
+                        hits.push(hit);
+                    }
+                }
+            }
+
+            hits
+        };
+
+        let join_result = tokio::task::spawn_blocking(closure).await;
+
+        let hits = match join_result {
+            Ok(hits) => hits,
+            Err(e) => std::panic::resume_unwind(e.into_panic()),
+        };
+        let total_hits = hits.len();
+
+        Ok(QueryResponse {
+            source: self.get_type(),
+            hits,
+            total_hits,
+        })
+    }
+}
+
+#[tauri::command]
+pub(crate) async fn uninstall_extension(
+    tauri_app_handle: AppHandle,
+    developer: String,
+    extension_id: String,
+) -> Result<(), String> {
+    THIRD_PARTY_EXTENSIONS_SEARCH_SOURCE
+        .get()
+        .expect("global third party search source not set")
+        .uninstall_extension(&tauri_app_handle, &developer, &extension_id)
+        .await
+}
+
+pub(crate) fn extension_to_hit(
+    extension: &Extension,
+    query_lower: &str,
+    opt_data_source: Option<&str>,
+) -> Option<(Document, f64)> {
+    if !extension.searchable() {
+        return None;
+    }
+
+    let extension_type_string = extension.r#type.to_string();
+
+    if let Some(data_source) = opt_data_source {
+        let document_data_source_id = extension_type_string.as_str();
+
+        if document_data_source_id != data_source {
+            return None;
+        }
+    }
+
+    let mut total_score = 0.0;
+
+    // Score based on title match
+    // Title is considered more important, so it gets a higher weight.
+    if let Some(title_score) =
+        calculate_text_similarity(&query_lower, &extension.name.to_lowercase())
+    {
+        total_score += title_score * 1.0; // Weight for title
+    }
+
+    // Score based on alias match if available
+    // Alias is considered less important than title, so it gets a lower weight.
+    if let Some(alias) = &extension.alias {
+        if let Some(alias_score) = calculate_text_similarity(&query_lower, &alias.to_lowercase()) {
+            total_score += alias_score * 0.7; // Weight for alias
+        }
+    }
+
+    // Only include if there's some relevance (score is meaningfully positive)
+    if total_score > 0.01 {
+        let on_opened = extension.on_opened().unwrap_or_else(|| {
+            panic!(
+                "extension (id [{}], type [{:?}]) is searchable, and should have a valid on_opened",
+                extension.id, extension.r#type
+            )
+        });
+        let url = on_opened.url();
+
+        let document = Document {
+            id: extension.id.clone(),
+            title: Some(extension.name.clone()),
+            icon: Some(extension.icon.clone()),
+            on_opened: Some(on_opened),
+            url: Some(url),
+            category: Some(extension_type_string.clone()),
+            source: Some(DataSourceReference {
+                id: Some(extension_type_string.clone()),
+                name: Some(extension_type_string.clone()),
+                icon: None,
+                r#type: Some(extension_type_string),
+            }),
+
+            ..Default::default()
+        };
+
+        Some((document, total_score))
+    } else {
+        None
+    }
+}

src-tauri/src/lib.rs

@@ -1,26 +1,24 @@
 mod assistant;
 mod autostart;
 mod common;
-mod local;
+mod extension;
 mod search;
 mod server;
+mod settings;
 mod setup;
 mod shortcut;
 mod util;
 
 use crate::common::register::SearchSourceRegistry;
-// use crate::common::traits::SearchSource;
-use crate::common::{MAIN_WINDOW_LABEL, SETTINGS_WINDOW_LABEL};
+use crate::common::{CHECK_WINDOW_LABEL, MAIN_WINDOW_LABEL, SETTINGS_WINDOW_LABEL};
 use crate::server::servers::{load_or_insert_default_server, load_servers_token};
-use autostart::{change_autostart, enable_autostart};
+use crate::util::prevent_default;
+use autostart::change_autostart;
 use lazy_static::lazy_static;
 use std::sync::Mutex;
-use tauri::async_runtime::block_on;
-#[cfg(target_os = "macos")]
-use tauri::ActivationPolicy;
-use tauri::{
-    AppHandle, Emitter, Manager, PhysicalPosition, Runtime, WebviewWindow, Window, WindowEvent,
-};
+use std::sync::OnceLock;
+use tauri::plugin::TauriPlugin;
+use tauri::{AppHandle, Emitter, Manager, PhysicalPosition, WebviewWindow, WindowEvent};
 use tauri_plugin_autostart::MacosLauncher;
 
 /// Tauri store name
@@ -29,6 +27,15 @@ pub(crate) const COCO_TAURI_STORE: &str = "coco_tauri_store";
 lazy_static! {
     static ref PREVIOUS_MONITOR_NAME: Mutex<Option<String>> = Mutex::new(None);
 }
+/// To allow us to access tauri's `AppHandle` when its context is inaccessible,
+/// store it globally. It will be set in `init()`.
+///
+/// # WARNING
+///
+/// You may find this work, but the usage is discouraged and should be generally
+/// avoided. If you do need it, always be careful that it may not be set() when
+/// you access it.
+pub(crate) static GLOBAL_TAURI_APP_HANDLE: OnceLock<AppHandle> = OnceLock::new();
 
 #[tauri::command]
 async fn change_window_height(handle: AppHandle, height: u32) {
@@ -55,24 +62,22 @@ struct Payload {
 #[cfg_attr(mobile, tauri::mobile_entry_point)]
 pub fn run() {
     let ctx = tauri::generate_context!();
-    // Initialize logger
-    env_logger::init();
 
     let mut app_builder = tauri::Builder::default();
+    // Set up logger first
+    app_builder = app_builder.plugin(set_up_tauri_logger());
 
     #[cfg(desktop)]
     {
-        app_builder = app_builder.plugin(tauri_plugin_single_instance::init(|_app, argv, _cwd| {
-            println!("a new app instance was opened with {argv:?} and the deep link event was already triggered");
-            // when defining deep link schemes at runtime, you must also check `argv` here
-        }));
+        app_builder =
+            app_builder.plugin(tauri_plugin_single_instance::init(|_app, _argv, _cwd| {}));
     }
 
     app_builder = app_builder
         .plugin(tauri_plugin_http::init())
         .plugin(tauri_plugin_shell::init())
         .plugin(tauri_plugin_autostart::init(
-            MacosLauncher::AppleScript,
+            MacosLauncher::LaunchAgent,
             None,
         ))
         .plugin(tauri_plugin_deep_link::init())
@@ -82,8 +87,14 @@ pub fn run() {
         .plugin(tauri_plugin_macos_permissions::init())
         .plugin(tauri_plugin_screenshots::init())
         .plugin(tauri_plugin_process::init())
-        .plugin(tauri_plugin_updater::Builder::new().build())
-        .plugin(tauri_plugin_windows_version::init());
+        .plugin(
+            tauri_plugin_updater::Builder::new()
+                .default_version_comparator(crate::util::updater::custom_version_comparator)
+                .build(),
+        )
+        .plugin(tauri_plugin_windows_version::init())
+        .plugin(tauri_plugin_opener::init())
+        .plugin(prevent_default::init());
 
     // Conditional compilation for macOS
     #[cfg(target_os = "macos")]
@@ -101,7 +112,8 @@ pub fn run() {
             show_coco,
             hide_coco,
             show_settings,
-            server::servers::get_server_token,
+            show_check,
+            hide_check,
             server::servers::add_coco_server,
             server::servers::remove_coco_server,
             server::servers::list_coco_servers,
@@ -116,8 +128,8 @@ pub fn run() {
             server::connector::get_connectors_by_server,
             search::query_coco_fusion,
             assistant::chat_history,
-            assistant::new_chat,
-            assistant::send_message,
+            assistant::chat_create,
+            assistant::chat_chat,
             assistant::session_chat_history,
             assistant::open_session_chat,
             assistant::close_session_chat,
@@ -125,67 +137,78 @@ pub fn run() {
             assistant::delete_session_chat,
             assistant::update_session_chat,
             assistant::assistant_search,
+            assistant::assistant_get,
+            assistant::assistant_get_multi,
             // server::get_coco_server_datasources,
             // server::get_coco_server_connectors,
-            server::websocket::connect_to_server,
-            server::websocket::disconnect,
             get_app_search_source,
             server::attachment::upload_attachment,
-            server::attachment::get_attachment,
+            server::attachment::get_attachment_by_ids,
             server::attachment::delete_attachment,
             server::transcription::transcription,
-            local::application::get_default_search_paths,
-            local::application::list_app_with_metadata_in,
-            util::open,
-            server::system_settings::get_system_settings
+            server::system_settings::get_system_settings,
+            extension::built_in::application::get_app_list,
+            extension::built_in::application::get_app_search_path,
+            extension::built_in::application::get_app_metadata,
+            extension::built_in::application::add_app_search_path,
+            extension::built_in::application::remove_app_search_path,
+            extension::built_in::application::reindex_applications,
+            extension::quicklink_link_arguments,
+            extension::list_extensions,
+            extension::enable_extension,
+            extension::disable_extension,
+            extension::set_extension_alias,
+            extension::register_extension_hotkey,
+            extension::unregister_extension_hotkey,
+            extension::is_extension_enabled,
+            extension::third_party::install::store::search_extension,
+            extension::third_party::install::store::extension_detail,
+            extension::third_party::install::store::install_extension_from_store,
+            extension::third_party::install::local_extension::install_local_extension,
+            extension::third_party::uninstall_extension,
+            extension::api::apis,
+            extension::api::fs::read_dir,
+            settings::set_allow_self_signature,
+            settings::get_allow_self_signature,
+            assistant::ask_ai,
+            crate::common::document::open,
+            extension::built_in::file_search::config::get_file_system_config,
+            extension::built_in::file_search::config::set_file_system_config,
+            server::synthesize::synthesize,
+            util::file::get_file_icon,
+            setup::backend_setup,
+            util::app_lang::update_app_lang,
+            util::path::path_absolute,
         ])
         .setup(|app| {
-            let registry = SearchSourceRegistry::default();
-
-            app.manage(registry); // Store registry in Tauri's app state
-            app.manage(server::websocket::WebSocketManager::default());
-
-            block_on(async {
-                init(app.handle()).await;
-            });
-
-            shortcut::enable_shortcut(app);
-
-            enable_autostart(app);
-
             #[cfg(target_os = "macos")]
-            app.set_activation_policy(ActivationPolicy::Accessory);
-
-            // app.listen("theme-changed", move |event| {
-            //     if let Ok(payload) = serde_json::from_str::<ThemeChangedPayload>(event.payload()) {
-            //         // switch_tray_icon(app.app_handle(), payload.is_dark_mode);
-            //         println!("Theme changed: is_dark_mode = {}", payload.is_dark_mode);
-            //     }
-            // });
-
-            #[cfg(desktop)]
             {
-                #[cfg(any(windows, target_os = "linux"))]
-                {
-                    app.deep_link().register("coco")?;
-                    use tauri_plugin_deep_link::DeepLinkExt;
-                    app.deep_link().register_all()?;
-                }
+                log::trace!("hiding Dock icon on macOS");
+                app.set_activation_policy(tauri::ActivationPolicy::Accessory);
+                log::trace!("Dock icon should be hidden now");
             }
 
-            // app.deep_link().on_open_url(|event| {
-            //     dbg!(event.urls());
-            // });
 
-            let main_window = app.get_webview_window(MAIN_WINDOW_LABEL).unwrap();
-            let settings_window = app.get_webview_window(SETTINGS_WINDOW_LABEL).unwrap();
-            setup::default(app, main_window.clone(), settings_window.clone());
+            /* ----------- This code must be executed on the main thread and must not be relocated. ----------- */
+            let app_handle = app.app_handle();
+            let main_window = app_handle.get_webview_window(MAIN_WINDOW_LABEL).unwrap();
+            let settings_window = app_handle
+                .get_webview_window(SETTINGS_WINDOW_LABEL)
+                .unwrap();
+            let check_window = app_handle.get_webview_window(CHECK_WINDOW_LABEL).unwrap();
+            setup::default(
+                app_handle,
+                main_window.clone(),
+                settings_window.clone(),
+                check_window.clone(),
+            );
+            /* ----------- This code must be executed on the main thread and must not be relocated. ----------- */
 
             Ok(())
         })
         .on_window_event(|window, event| match event {
             WindowEvent::CloseRequested { api, .. } => {
-                dbg!("Close requested event received");
+                //dbg!("Close requested event received");
                 window.hide().unwrap();
                 api.prevent_close();
             }
@@ -200,10 +223,10 @@ pub fn run() {
             has_visible_windows,
             ..
         } => {
-            dbg!(
-                "Reopen event received: has_visible_windows = {}",
-                has_visible_windows
-            );
+            // dbg!(
+            //     "Reopen event received: has_visible_windows = {}",
+            //     has_visible_windows
+            // );
             if has_visible_windows {
                 return;
             }
@@ -214,17 +237,17 @@ pub fn run() {
     });
 }
 
-pub async fn init<R: Runtime>(app_handle: &AppHandle<R>) {
+pub async fn init(app_handle: &AppHandle) {
     // Await the async functions to load the servers and tokens
     if let Err(err) = load_or_insert_default_server(app_handle).await {
-        eprintln!("Failed to load servers: {}", err);
+        log::error!("Failed to load servers: {}", err);
     }
 
     if let Err(err) = load_servers_token(app_handle).await {
-        eprintln!("Failed to load server tokens: {}", err);
+        log::error!("Failed to load server tokens: {}", err);
     }
 
-    let coco_servers = server::servers::get_all_servers();
+    let coco_servers = server::servers::get_all_servers().await;
 
     // Get the registry from Tauri's state
     // let registry: State<SearchSourceRegistry> = app_handle.state::<SearchSourceRegistry>();
@@ -233,54 +256,53 @@ pub async fn init<R: Runtime>(app_handle: &AppHandle<R>) {
         crate::server::servers::try_register_server_to_search_source(app_handle.clone(), &server)
             .await;
     }
-}
 
-async fn init_app_search_source<R: Runtime>(app_handle: &AppHandle<R>) -> Result<(), String> {
-    let application_search =
-        local::application::ApplicationSearchSource::new(app_handle.clone(), 1000f64).await?;
-    let calculator_search = local::calculator::CalculatorSource::new(2000f64);
-
-    // Register the application search source
-    let registry = app_handle.state::<SearchSourceRegistry>();
-    registry.register_source(application_search).await;
-    registry.register_source(calculator_search).await;
-
-    Ok(())
+    extension::built_in::pizza_engine_runtime::start_pizza_engine_runtime().await;
 }
 
 #[tauri::command]
-async fn show_coco<R: Runtime>(app_handle: AppHandle<R>) {
-    if let Some(window) = app_handle.get_window(MAIN_WINDOW_LABEL) {
-        let _ = app_handle.emit("show-coco", ());
-
+async fn show_coco(app_handle: AppHandle) {
+    if let Some(window) = app_handle.get_webview_window(MAIN_WINDOW_LABEL) {
         move_window_to_active_monitor(&window);
 
         let _ = window.show();
         let _ = window.unminimize();
+
+        // The Window Management (WM) extension (macOS-only) controls the
+        // frontmost window.  Setting focus on macOS makes Coco the frontmost
+        // window, which means the WM extension would control Coco instead of other
+        // windows, which is not what we want.
+        //
+        // On Linux/Windows, however, setting focus is a necessity to ensure that
+        // users open Coco's window, then they can start typing, without needing
+        // to click on the window.
+        #[cfg(not(target_os = "macos"))]
         let _ = window.set_focus();
+
+        let _ = app_handle.emit("show-coco", ());
     }
 }
 
 #[tauri::command]
-async fn hide_coco<R: Runtime>(app: AppHandle<R>) {
-    if let Some(window) = app.get_window(MAIN_WINDOW_LABEL) {
+async fn hide_coco(app: AppHandle) {
+    if let Some(window) = app.get_webview_window(MAIN_WINDOW_LABEL) {
         if let Err(err) = window.hide() {
-            eprintln!("Failed to hide the window: {}", err);
+            log::error!("Failed to hide the window: {}", err);
         } else {
-            println!("Window successfully hidden.");
+            log::debug!("Window successfully hidden.");
         }
     } else {
-        eprintln!("Main window not found.");
+        log::error!("Main window not found.");
     }
 }
 
-fn move_window_to_active_monitor<R: Runtime>(window: &Window<R>) {
-    dbg!("Moving window to active monitor");
+fn move_window_to_active_monitor(window: &WebviewWindow) {
+    //dbg!("Moving window to active monitor");
     // Try to get the available monitors, handle failure gracefully
     let available_monitors = match window.available_monitors() {
         Ok(monitors) => monitors,
         Err(e) => {
-            eprintln!("Failed to get monitors: {}", e);
+            log::error!("Failed to get monitors: {}", e);
             return;
         }
     };
@@ -289,7 +311,7 @@ fn move_window_to_active_monitor<R: Runtime>(window: &Window<R>) {
     let cursor_position = match window.cursor_position() {
         Ok(pos) => Some(pos),
         Err(e) => {
-            eprintln!("Failed to get cursor position: {}", e);
+            log::error!("Failed to get cursor position: {}", e);
             None
         }
     };
@@ -318,7 +340,7 @@ fn move_window_to_active_monitor<R: Runtime>(window: &Window<R>) {
     let monitor = match target_monitor.or_else(|| window.primary_monitor().ok().flatten()) {
         Some(monitor) => monitor,
         None => {
-            eprintln!("No monitor found!");
+            log::error!("No monitor found!");
             return;
         }
     };
@@ -328,7 +350,7 @@ fn move_window_to_active_monitor<R: Runtime>(window: &Window<R>) {
 
         if let Some(ref prev_name) = *previous_monitor_name {
             if name.to_string() == *prev_name {
-                println!("Currently on the same monitor");
+                log::debug!("Currently on the same monitor");
 
                 return;
             }
@@ -342,7 +364,7 @@ fn move_window_to_active_monitor<R: Runtime>(window: &Window<R>) {
     let window_size = match window.inner_size() {
         Ok(size) => size,
         Err(e) => {
-            eprintln!("Failed to get window size: {}", e);
+            log::error!("Failed to get window size: {}", e);
             return;
         }
     };
@@ -356,52 +378,19 @@ fn move_window_to_active_monitor<R: Runtime>(window: &Window<R>) {
 
     // Move the window to the new position
     if let Err(e) = window.set_position(PhysicalPosition::new(window_x, window_y)) {
-        eprintln!("Failed to move window: {}", e);
+        log::error!("Failed to move window: {}", e);
     }
 
     if let Some(name) = monitor.name() {
-        println!("Window moved to monitor: {}", name);
+        log::debug!("Window moved to monitor: {}", name);
 
         let mut previous_monitor = PREVIOUS_MONITOR_NAME.lock().unwrap();
         *previous_monitor = Some(name.to_string());
     }
 }
 
-#[allow(dead_code)]
-fn open_settings(app: &tauri::AppHandle) {
-    use tauri::webview::WebviewBuilder;
-    println!("settings menu item was clicked");
-    let window = app.get_webview_window("settings");
-    if let Some(window) = window {
-        let _ = window.show();
-        let _ = window.unminimize();
-        let _ = window.set_focus();
-    } else {
-        let window = tauri::window::WindowBuilder::new(app, "settings")
-            .title("Settings Window")
-            .fullscreen(false)
-            .resizable(false)
-            .minimizable(false)
-            .maximizable(false)
-            .inner_size(800.0, 600.0)
-            .build()
-            .unwrap();
-
-        let webview_builder =
-            WebviewBuilder::new("settings", tauri::WebviewUrl::App("/ui/settings".into()));
-        let _webview = window
-            .add_child(
-                webview_builder,
-                tauri::LogicalPosition::new(0, 0),
-                window.inner_size().unwrap(),
-            )
-            .unwrap();
-    }
-}
-
 #[tauri::command]
-async fn get_app_search_source<R: Runtime>(app_handle: AppHandle<R>) -> Result<(), String> {
-    init_app_search_source(&app_handle).await?;
+async fn get_app_search_source(app_handle: AppHandle) -> Result<(), String> {
     let _ = server::connector::refresh_all_connectors(&app_handle).await;
     let _ = server::datasource::refresh_all_datasources(&app_handle).await;
 
@@ -410,5 +399,166 @@ async fn get_app_search_source<R: Runtime>(app_handle: AppHandle<R>) -> Result<(
 
 #[tauri::command]
 async fn show_settings(app_handle: AppHandle) {
-    open_settings(&app_handle);
+    log::debug!("settings menu item was clicked");
+    let window = app_handle
+        .get_webview_window(SETTINGS_WINDOW_LABEL)
+        .expect("we have a settings window");
+
+    window.show().unwrap();
+    window.unminimize().unwrap();
+    window.set_focus().unwrap();
+}
+
+#[tauri::command]
+async fn show_check(app_handle: AppHandle) {
+    log::debug!("check menu item was clicked");
+    let window = app_handle
+        .get_webview_window(CHECK_WINDOW_LABEL)
+        .expect("we have a check window");
+
+    window.show().unwrap();
+    window.unminimize().unwrap();
+    window.set_focus().unwrap();
+}
+
+#[tauri::command]
+async fn hide_check(app_handle: AppHandle) {
+    log::debug!("check window was closed");
+    let window = &app_handle
+        .get_webview_window(CHECK_WINDOW_LABEL)
+        .expect("we have a check window");
+
+    window.hide().unwrap();
+}
+
+/// Log format:
+///
+/// ```text
+/// [time] [log level] [file module:line] message
+/// ```
+///
+/// Example:
+///
+///
+/// ```text
+/// [05-11 17:00:00] [INF] [coco_lib:625] Coco-AI started
+/// ```
+fn set_up_tauri_logger() -> TauriPlugin<tauri::Wry> {
+    use log::Level;
+    use log::LevelFilter;
+    use tauri_plugin_log::Builder;
+
+    /// Coco-AI app's default log level.
+    const DEFAULT_LOG_LEVEL: LevelFilter = LevelFilter::Info;
+    const LOG_LEVEL_ENV_VAR: &str = "COCO_LOG";
+
+    fn format_log_level(level: Level) -> &'static str {
+        match level {
+            Level::Trace => "TRC",
+            Level::Debug => "DBG",
+            Level::Info => "INF",
+            Level::Warn => "WAR",
+            Level::Error => "ERR",
+        }
+    }
+
+    fn format_target_and_line(record: &log::Record) -> String {
+        let mut str = record.target().to_string();
+        if let Some(line) = record.line() {
+            str.push(':');
+            str.push_str(&line.to_string());
+        }
+
+        str
+    }
+
+    /// Allow us to configure dynamic log levels via environment variable `COCO_LOG`.
+    ///
+    /// Generally, it mirros the behavior of `env_logger`. Syntax: `COCO_LOG=[target][=][level][,...]`
+    ///
+    /// * If this environment variable is not set, use the default log level.
+    /// * If it is set, respect it:
+    ///
+    /// * `COCO_LOG=coco_lib` turns on all logging for the `coco_lib` module, which is
+    ///   equivalent to `COCO_LOG=coco_lib=trace`
+    /// * `COCO_LOG=trace` turns on all logging for the application, regardless of its name
+    /// * `COCO_LOG=TRACE` turns on all logging for the application, regardless of its name (same as previous)
+    /// * `COCO_LOG=reqwest=debug` turns on debug logging for `reqwest`
+    /// * `COCO_LOG=trace,tauri=off` turns on all the logging except for the logs come from `tauri`
+    /// * `COCO_LOG=off` turns off all logging for the application
+    /// * `COCO_LOG=` Since the value is empty, turns off all logging for the application as well
+    fn dynamic_log_level(mut builder: Builder) -> Builder {
+        let Some(log_levels) = std::env::var_os(LOG_LEVEL_ENV_VAR) else {
+            return builder.level(DEFAULT_LOG_LEVEL);
+        };
+
+        builder = builder.level(LevelFilter::Off);
+
+        let log_levels = log_levels.into_string().unwrap_or_else(|e| {
+            panic!(
+                "The value '{}' set in environment varaible '{}' is not UTF-8 encoded",
+                // Cannot use `.display()` here becuase that requires MSRV 1.87.0
+                e.to_string_lossy(),
+                LOG_LEVEL_ENV_VAR
+            )
+        });
+
+        // COCO_LOG=[target][=][level][,...]
+        let target_log_levels = log_levels.split(',');
+        for target_log_level in target_log_levels {
+            #[allow(clippy::collapsible_else_if)]
+            if let Some(char_index) = target_log_level.chars().position(|c| c == '=') {
+                let (target, equal_sign_and_level) = target_log_level.split_at(char_index);
+                // Remove the equal sign, we know it takes 1 byte
+                let level = &equal_sign_and_level[1..];
+
+                if let Ok(level) = level.parse::<LevelFilter>() {
+                    // Here we have to call `.to_string()` because `Cow<'static, str>` requires `&'static str`
+                    builder = builder.level_for(target.to_string(), level);
+                } else {
+                    panic!(
+                        "log level '{}' set in '{}={}' is invalid",
+                        level, target, level
+                    );
+                }
+            } else {
+                if let Ok(level) = target_log_level.parse::<LevelFilter>() {
+                    // This is a level
+                    builder = builder.level(level);
+                } else {
+                    // This is a target, enable all the logging
+                    //
+                    // Here we have to call `.to_string()` because `Cow<'static, str>` requires `&'static str`
+                    builder = builder.level_for(target_log_level.to_string(), LevelFilter::Trace);
+                }
+            }
+        }
+
+        builder
+    }
+
+    // When running the built binary, set `COCO_LOG` to `coco_lib=trace` to capture all logs
+    // that come from Coco in the log file, which helps with debugging.
+    if !tauri::is_dev() {
+        // We have absolutely no guarantee that we (We have control over the Rust
+        // code, but definitely no idea about the libc C code, all the shared objects
+        // that we will link) will not concurrently read/write `envp`, so just use unsafe.
+        unsafe {
+            std::env::set_var("COCO_LOG", "coco_lib=trace");
+        }
+    }
+
+    let mut builder = tauri_plugin_log::Builder::new();
+    builder = builder.format(|out, message, record| {
+        let now = chrono::Local::now().format("%m-%d %H:%M:%S");
+        let level = format_log_level(record.level());
+        let target_and_line = format_target_and_line(record);
+        out.finish(format_args!(
+            "[{}] [{}] [{}] {}",
+            now, level, target_and_line, message
+        ));
+    });
+    builder = dynamic_log_level(builder);
+
+    builder.build()
 }

src-tauri/src/local/application.rs

@@ -1,313 +0,0 @@
-use crate::common::document::{DataSourceReference, Document};
-use crate::common::error::SearchError;
-use crate::common::search::{QueryResponse, QuerySource, SearchQuery};
-use crate::common::traits::SearchSource;
-use crate::local::LOCAL_QUERY_SOURCE_TYPE;
-use applications::App;
-use async_trait::async_trait;
-use fuzzy_prefix_search::Trie;
-use std::collections::HashMap;
-use std::path::PathBuf;
-use tauri::{AppHandle, Runtime};
-use tauri_plugin_fs_pro::{icon, metadata, name, IconOptions};
-
-const DATA_SOURCE_ID: &str = "Applications";
-
-#[tauri::command]
-pub fn get_default_search_paths() -> Vec<String> {
-    #[cfg(target_os = "macos")]
-    return vec![
-        "/Applications".into(),
-        "/System/Applications".into(),
-        "/System/Library/CoreServices".into(),
-    ];
-
-    #[cfg(not(target_os = "macos"))]
-    {
-        let paths = applications::get_default_search_paths();
-        let mut ret = Vec::with_capacity(paths.len());
-        for search_path in paths {
-            let path_string = search_path
-                .into_os_string()
-                .into_string()
-                .expect("path should be UTF-8 encoded");
-
-            ret.push(path_string);
-        }
-
-        ret
-    }
-}
-
-/// Helper function to return `app`'s path.
-///
-/// * Windows: return the path to application's exe
-/// * macOS: return the path to the `.app` bundle
-/// * Linux: return the path to the `.desktop` file
-fn get_app_path(app: &App) -> PathBuf {
-    if cfg!(target_os = "windows") {
-        assert!(
-            app.icon_path.is_some(),
-            "we only accept Applications with icons"
-        );
-        app.app_path_exe
-            .as_ref()
-            .expect("icon is Some, exe path should be Some as well")
-            .to_path_buf()
-    } else {
-        app.app_desktop_path.clone()
-    }
-}
-
-/// Helper function to return `app`'s path.
-///
-/// * Windows/macOS: extract `app_path`'s file name and remove the file extension
-/// * Linux: return the name specified in `.desktop` file
-async fn get_app_name(app: &App) -> String {
-    if cfg!(target_os = "linux") {
-        app.name.clone()
-    } else {
-        let app_path = get_app_path(app);
-        name(app_path.clone()).await
-    }
-}
-
-/// Helper function to return an absolute path to `app`'s icon.
-///
-/// On macOS/Windows, we cache icons in our data directory using the `icon()` function.
-async fn get_app_icon_path<R: Runtime>(
-    tauri_app_handle: &AppHandle<R>,
-    app: &App,
-) -> Result<PathBuf, String> {
-    if cfg!(target_os = "linux") {
-        let icon_path = app
-            .icon_path
-            .as_ref()
-            .expect("We only accept applications with icons")
-            .to_path_buf();
-
-        Ok(icon_path)
-    } else {
-        let app_path = get_app_path(app);
-        let options = IconOptions {
-            size: Some(256),
-            save_path: None,
-        };
-
-        icon(tauri_app_handle.clone(), app_path, Some(options))
-            .await
-            .map_err(|err| err.to_string())
-    }
-}
-
-/// Return all the Apps found under `search_path`.
-///
-/// Note: apps with no icons will be filtered out.
-fn list_app_in(search_path: Vec<String>) -> Result<Vec<App>, String> {
-    let search_path = search_path
-        .into_iter()
-        .map(PathBuf::from)
-        .collect::<Vec<_>>();
-
-    let apps = applications::get_all_apps(&search_path).map_err(|err| err.to_string())?;
-
-    Ok(apps
-        .into_iter()
-        .filter(|app| app.icon_path.is_some())
-        .collect())
-}
-
-#[derive(serde::Serialize)]
-#[serde(rename_all = "camelCase")]
-pub struct AppMetadata {
-    name: String,
-    r#where: PathBuf,
-    size: u64,
-    icon: PathBuf,
-    created: u128,
-    modified: u128,
-    last_opened: u128,
-}
-
-/// List apps that are in the `search_path`.
-///
-/// Different from `list_app_in()`, every app is JSON object containing its metadata, e.g.:
-///
-/// ```json
-/// {
-///   "name": "Finder",
-///   "where": "/System/Library/CoreServices",
-///   "size": 49283072,
-///   "icon": "/xxx.png",  
-///   "created": 1744625204,
-///   "modified": 1744625204,
-///   "lastOpened": 1744625250
-/// }
-/// ```
-#[tauri::command]
-pub async fn list_app_with_metadata_in<R: Runtime>(
-    app_handle: AppHandle<R>,
-    search_path: Vec<String>,
-) -> Result<Vec<AppMetadata>, String> {
-    let apps = list_app_in(search_path)?;
-
-    let mut apps_with_meta = Vec::with_capacity(apps.len());
-
-    // name version where Type(hardcoded Application) Size Created Modify
-    for app in apps.iter() {
-        let app_path = get_app_path(app);
-        let app_name = get_app_name(app).await;
-        let app_path_where = {
-            let mut app_path_clone = app_path.clone();
-            let truncated = app_path_clone.pop();
-            if !truncated {
-                panic!("every app file should live somewhere");
-            }
-
-            app_path_clone
-        };
-        let icon = get_app_icon_path(&app_handle, app).await?;
-
-        let raw_app_metadata = metadata(app_path.clone(), None).await?;
-
-        let app_metadata = AppMetadata {
-            name: app_name,
-            r#where: app_path_where,
-            size: raw_app_metadata.size,
-            icon,
-            created: raw_app_metadata.created_at,
-            modified: raw_app_metadata.modified_at,
-            last_opened: raw_app_metadata.accessed_at,
-        };
-
-        apps_with_meta.push(app_metadata);
-    }
-
-    Ok(apps_with_meta)
-}
-
-pub struct ApplicationSearchSource {
-    base_score: f64,
-    // app name -> app icon path
-    icons: HashMap<String, PathBuf>,
-    application_paths: Trie<PathBuf>,
-}
-
-impl ApplicationSearchSource {
-    pub async fn new<R: Runtime>(
-        app_handle: AppHandle<R>,
-        base_score: f64,
-    ) -> Result<Self, String> {
-        let application_paths = Trie::new();
-        let mut icons = HashMap::new();
-
-        let default_search_path = get_default_search_paths();
-        let apps = list_app_in(default_search_path)?;
-
-        for app in &apps {
-            let app_path = get_app_path(app);
-            let app_name = get_app_name(app).await;
-            let app_icon_path = get_app_icon_path(&app_handle, app).await?;
-
-            if app_name.is_empty() || app_name.eq("Coco-AI") {
-                continue;
-            }
-
-            application_paths.insert(&app_name, app_path);
-            icons.insert(app_name, app_icon_path);
-        }
-
-        Ok(ApplicationSearchSource {
-            base_score,
-            icons,
-            application_paths,
-        })
-    }
-}
-
-#[async_trait]
-impl SearchSource for ApplicationSearchSource {
-    fn get_type(&self) -> QuerySource {
-        QuerySource {
-            r#type: LOCAL_QUERY_SOURCE_TYPE.into(),
-            name: hostname::get()
-                .unwrap_or("My Computer".into())
-                .to_string_lossy()
-                .into(),
-            id: DATA_SOURCE_ID.into(),
-        }
-    }
-
-    async fn search(&self, query: SearchQuery) -> Result<QueryResponse, SearchError> {
-        let query_string = query
-            .query_strings
-            .get("query")
-            .unwrap_or(&"".to_string())
-            .to_lowercase();
-
-        if query_string.is_empty() {
-            return Ok(QueryResponse {
-                source: self.get_type(),
-                hits: Vec::new(),
-                total_hits: 0,
-            });
-        }
-
-        let mut total_hits = 0;
-        let mut hits = Vec::new();
-
-        let query_string_len = query_string.len();
-        let mut results = self
-            .application_paths
-            .search_within_distance_scored(&query_string, query_string_len - 1);
-
-        // Check for NaN or extreme score values and handle them properly
-        results.sort_by(|a, b| {
-            // If either score is NaN, consider them equal (you can customize this logic as needed)
-            if a.score.is_nan() || b.score.is_nan() {
-                std::cmp::Ordering::Equal
-            } else {
-                // Otherwise, compare the scores as usual
-                b.score
-                    .partial_cmp(&a.score)
-                    .unwrap_or(std::cmp::Ordering::Equal)
-            }
-        });
-
-        if !results.is_empty() {
-            for result in results {
-                let app_name = result.word;
-                let app_path = result.data.first().unwrap().clone();
-                let app_path_string = app_path.to_string_lossy().into_owned();
-
-                total_hits += 1;
-
-                let mut doc = Document::new(
-                  Some(DataSourceReference {
-                      r#type: Some(LOCAL_QUERY_SOURCE_TYPE.into()),
-                      name: Some(DATA_SOURCE_ID.into()),
-                      id: Some(DATA_SOURCE_ID.into()),
-                      icon: None,
-                  }),
-                  app_path_string.clone(),
-                  "Application".to_string(),
-                  app_name.clone(),
-                  app_path_string.clone(),
-              );
-
-                // Attach icon if available
-                if let Some(icon_path) = self.icons.get(app_name.as_str()) {
-                    doc.icon = Some(icon_path.as_os_str().to_str().unwrap().to_string());
-                }
-
-                hits.push((doc, self.base_score + result.score as f64));
-            }
-        }
-
-        Ok(QueryResponse {
-            source: self.get_type(),
-            hits,
-            total_hits,
-        })
-    }
-}

src-tauri/src/local/mod.rs

@@ -1,5 +0,0 @@
-pub mod application;
-pub mod calculator;
-pub mod file_system;
-
-pub const LOCAL_QUERY_SOURCE_TYPE: &str = "local";

src-tauri/src/main.rs

@@ -1,5 +1,112 @@
 // Prevents additional console window on Windows in release, DO NOT REMOVE!!
 #![cfg_attr(not(debug_assertions), windows_subsystem = "windows")]
+
+use std::fs::OpenOptions;
+use std::io::Write;
+use std::path::PathBuf;
+
+/// Helper function to return the log directory.
+///
+/// This should return the same value as `tauri_app_handle.path().app_log_dir().unwrap()`.
+fn app_log_dir() -> PathBuf {
+    // This function `app_log_dir()` is for the panic hook, which should be set
+    // before Tauri performs any initialization. At that point, we do not have
+    // access to the identifier provided by Tauri, so we need to define our own
+    // one here.
+    //
+    // NOTE: If you update identifier in the following files, update this one
+    // as well!
+    //
+    // src-tauri/tauri.linux.conf.json
+    // src-tauri/Entitlements.plist
+    // src-tauri/tauri.conf.json
+    // src-tauri/Info.plist
+    const IDENTIFIER: &str = "rs.coco.app";
+
+    #[cfg(target_os = "macos")]
+    let path = dirs::home_dir()
+        .expect("cannot find the home directory, Coco should never run in such a environment")
+        .join("Library/Logs")
+        .join(IDENTIFIER);
+
+    #[cfg(not(target_os = "macos"))]
+    let path = dirs::data_local_dir()
+        .expect("app local dir is None, we should not encounter this")
+        .join(IDENTIFIER)
+        .join("logs");
+
+    path
+}
+
+/// Set up panic hook to log panic information to a file
+fn setup_panic_hook() {
+    std::panic::set_hook(Box::new(|panic_info| {
+        let timestamp = chrono::Local::now();
+        // "%Y-%m-%d %H:%M:%S"
+        //
+        // I would like to use the above format, but Windows does not allow that
+        // and complains with OS error 123.
+        let datetime_str = timestamp.format("%Y-%m-%d-%H-%M-%S").to_string();
+
+        let log_dir = app_log_dir();
+
+        // Ensure the log directory exists
+        if let Err(e) = std::fs::create_dir_all(&log_dir) {
+            eprintln!("Panic hook error: failed to create log directory: {}", e);
+            return;
+        }
+
+        let panic_file = log_dir.join(format!("{}_rust_panic.log", datetime_str));
+
+        // Prepare panic information
+        let panic_message = if let Some(s) = panic_info.payload().downcast_ref::<&str>() {
+            s.to_string()
+        } else if let Some(s) = panic_info.payload().downcast_ref::<String>() {
+            s.clone()
+        } else {
+            "Unknown panic message".to_string()
+        };
+
+        let location = if let Some(location) = panic_info.location() {
+            format!(
+                "{}:{}:{}",
+                location.file(),
+                location.line(),
+                location.column()
+            )
+        } else {
+            "Unknown location".to_string()
+        };
+
+        // Use `force_capture()` instead of `capture()` as we want backtrace
+        // regardless of whether the corresponding env vars are set or not.
+        let backtrace = std::backtrace::Backtrace::force_capture();
+
+        let panic_log = format!(
+            "Time: [{}]\nLocation: [{}]\nMessage: [{}]\nBacktrace: \n{}",
+            datetime_str, location, panic_message, backtrace
+        );
+
+        // Write to panic file
+        match OpenOptions::new()
+            .create(true)
+            .append(true)
+            .open(&panic_file)
+        {
+            Ok(mut file) => {
+                if let Err(e) = writeln!(file, "{}", panic_log) {
+                    eprintln!("Panic hook error: Failed to write panic to file: {}", e);
+                }
+            }
+            Err(e) => {
+                eprintln!("Panic hook error: Failed to open panic log file: {}", e);
+            }
+        }
+    }));
+}
+
 fn main() {
+    // Panic hook setup should be the first thing to do, everything could panic!
+    setup_panic_hook();
     coco_lib::run();
 }

src-tauri/src/search/mod.rs

@@ -3,128 +3,273 @@ use crate::common::register::SearchSourceRegistry;
 use crate::common::search::{
     FailedRequest, MultiSourceQueryResponse, QueryHits, QuerySource, SearchQuery,
 };
-use futures::stream::FuturesUnordered;
+use crate::common::traits::SearchSource;
+use crate::server::servers::logout_coco_server;
+use crate::server::servers::mark_server_as_offline;
+use function_name::named;
 use futures::StreamExt;
+use futures::stream::FuturesUnordered;
+use reqwest::StatusCode;
+use std::cmp::Reverse;
 use std::collections::HashMap;
 use std::collections::HashSet;
-use tauri::{AppHandle, Manager, Runtime};
-use tokio::time::{timeout, Duration};
+use std::sync::Arc;
+use tauri::{AppHandle, Manager};
+use tokio::time::{Duration, timeout};
 
+#[named]
 #[tauri::command]
-pub async fn query_coco_fusion<R: Runtime>(
-    app_handle: AppHandle<R>,
+pub async fn query_coco_fusion(
+    tauri_app_handle: AppHandle,
     from: u64,
     size: u64,
     query_strings: HashMap<String, String>,
     query_timeout: u64,
 ) -> Result<MultiSourceQueryResponse, SearchError> {
-    let query_source_to_search = query_strings.get("querysource");
-
-    let search_sources = app_handle.state::<SearchSourceRegistry>();
-
-    let sources_future = search_sources.get_sources();
-    let mut futures = FuturesUnordered::new();
-    let mut sources = HashMap::new();
-
-    let sources_list = sources_future.await;
-
-    // Time limit for each query
+    let opt_query_source_id = query_strings.get("querysource");
+    let search_sources = tauri_app_handle.state::<SearchSourceRegistry>();
+    let query_source_list = search_sources.get_sources().await;
     let timeout_duration = Duration::from_millis(query_timeout);
+    let search_query = SearchQuery::new(from, size, query_strings.clone());
 
-    // Push all queries into futures
-    for query_source in sources_list {
-        let query_source_type = query_source.get_type().clone();
+    log::debug!(
+        "{}() invoked with parameters: from: [{}], size: [{}], query_strings: [{:?}], timeout: [{:?}]",
+        function_name!(),
+        from,
+        size,
+        query_strings,
+        timeout_duration
+    );
 
-        if let Some(query_source_to_search) = query_source_to_search {
-            // We should not search this data source
-            if &query_source_type.id != query_source_to_search {
-                continue;
-            }
+    // Dispatch to different `query_coco_fusion_xxx()` functions.
+    if let Some(query_source_id) = opt_query_source_id {
+        query_coco_fusion_single_query_source(
+            tauri_app_handle,
+            query_source_list,
+            query_source_id.clone(),
+            timeout_duration,
+            search_query,
+        )
+        .await
+    } else {
+        query_coco_fusion_multi_query_sources(
+            tauri_app_handle,
+            query_source_list,
+            timeout_duration,
+            search_query,
+        )
+        .await
+    }
+}
+
+/// Query only 1 query source.
+///
+/// The logic here is much simpler than `query_coco_fusion_multi_query_sources()`
+/// as we don't need to re-rank due to fact that this does not involve multiple
+/// query sources.
+async fn query_coco_fusion_single_query_source(
+    tauri_app_handle: AppHandle,
+    mut query_source_list: Vec<Arc<dyn SearchSource>>,
+    id_of_query_source_to_query: String,
+    timeout_duration: Duration,
+    search_query: SearchQuery,
+) -> Result<MultiSourceQueryResponse, SearchError> {
+    // If this query source ID is specified, we only query this query source.
+    log::debug!(
+        "parameter [querysource={}] specified, will only query this query source",
+        id_of_query_source_to_query
+    );
+
+    let opt_query_source_trait_object_index = query_source_list
+        .iter()
+        .position(|query_source| query_source.get_type().id == id_of_query_source_to_query);
+
+    let Some(query_source_trait_object_index) = opt_query_source_trait_object_index else {
+        // It is possible (an edge case) that the frontend invokes `query_coco_fusion()`
+        // with a querysource that does not exist in the source list:
+        //
+        // 1. Search applications
+        // 2. Navigate to the application sub page
+        // 3. Disable the application extension in settings, which removes this
+        //    query source from the list
+        // 4. hide the search window
+        // 5. Re-open the search window, you will still be in the sub page, type to search
+        //    something
+        //
+        // The application query source is not in the source list because the extension
+        // was disabled and thus removed from the query sources, but the last
+        // search is indeed invoked with parameter `querysource=application`.
+        return Ok(MultiSourceQueryResponse {
+            failed: Vec::new(),
+            hits: Vec::new(),
+            total_hits: 0,
+        });
+    };
+
+    let query_source_trait_object = query_source_list.remove(query_source_trait_object_index);
+    let query_source = query_source_trait_object.get_type();
+    let search_fut = query_source_trait_object.search(tauri_app_handle.clone(), search_query);
+    let timeout_result = timeout(timeout_duration, search_fut).await;
+
+    let mut failed_requests: Vec<FailedRequest> = Vec::new();
+    let mut hits = Vec::new();
+    let mut total_hits = 0;
+
+    match timeout_result {
+        // Ignore the `_timeout` variable as it won't provide any useful debugging information.
+        Err(_timeout) => {
+            log::warn!(
+                "searching query source [{}] timed out, skip this request",
+                query_source.id
+            );
         }
+        Ok(query_result) => match query_result {
+            Ok(response) => {
+                total_hits = response.total_hits;
 
-        sources.insert(query_source_type.id.clone(), query_source_type);
+                for (document, score) in response.hits {
+                    log::debug!(
+                        "document from query source [{}]: ID [{}], title [{:?}], score [{}]",
+                        response.source.id,
+                        document.id,
+                        document.title,
+                        score
+                    );
 
-        let query = SearchQuery::new(from, size, query_strings.clone());
-        let query_source_clone = query_source.clone(); // Clone Arc to avoid ownership issues
+                    let query_hit = QueryHits {
+                        source: Some(response.source.clone()),
+                        score,
+                        document,
+                    };
 
-        futures.push(tokio::spawn(async move {
-            // Timeout each query execution
-            timeout(timeout_duration, async {
-                query_source_clone.search(query).await
-            })
-                .await
-        }));
+                    hits.push(query_hit);
+                }
+            }
+            Err(search_error) => {
+                query_coco_fusion_handle_failed_request(
+                    tauri_app_handle.clone(),
+                    &mut failed_requests,
+                    query_source,
+                    search_error,
+                )
+                .await;
+            }
+        },
+    }
+
+    Ok(MultiSourceQueryResponse {
+        failed: failed_requests,
+        hits,
+        total_hits,
+    })
+}
+
+async fn query_coco_fusion_multi_query_sources(
+    tauri_app_handle: AppHandle,
+    query_source_trait_object_list: Vec<Arc<dyn SearchSource>>,
+    timeout_duration: Duration,
+    search_query: SearchQuery,
+) -> Result<MultiSourceQueryResponse, SearchError> {
+    log::debug!(
+        "will query query sources {:?}",
+        query_source_trait_object_list
+            .iter()
+            .map(|search_source| search_source.get_type().id.clone())
+            .collect::<Vec<String>>()
+    );
+
+    let query_keyword = search_query
+        .query_strings
+        .get("query")
+        .unwrap_or(&"".to_string())
+        .clone();
+    let size = search_query.size;
+
+    let mut futures = FuturesUnordered::new();
+
+    let query_source_list_len = query_source_trait_object_list.len();
+    for query_source_trait_object in query_source_trait_object_list {
+        let query_source = query_source_trait_object.get_type().clone();
+        let tauri_app_handle_clone = tauri_app_handle.clone();
+        let search_query_clone = search_query.clone();
+
+        futures.push(async move {
+            (
+                // Store `query_source` as part of future for debugging purposes.
+                query_source,
+                timeout(timeout_duration, async {
+                    query_source_trait_object
+                        .search(tauri_app_handle_clone, search_query_clone)
+                        .await
+                })
+                .await,
+            )
+        });
     }
 
     let mut total_hits = 0;
+    let mut need_rerank = true; //TODO set default to false when boost supported in Pizza
     let mut failed_requests = Vec::new();
     let mut all_hits: Vec<(String, QueryHits, f64)> = Vec::new();
     let mut hits_per_source: HashMap<String, Vec<(QueryHits, f64)>> = HashMap::new();
 
-    while let Some(result) = futures.next().await {
-        match result {
-            Ok(Ok(Ok(response))) => {
-                total_hits += response.total_hits;
-                let source_id = response.source.id.clone();
+    if query_source_list_len > 1 {
+        need_rerank = true; // If we have more than one source, we need to rerank the hits
+    }
 
-                for (doc, score) in response.hits {
-                    let query_hit = QueryHits {
-                        source: Some(response.source.clone()),
-                        score,
-                        document: doc,
-                    };
+    while let Some((query_source, timeout_result)) = futures.next().await {
+        match timeout_result {
+            // Ignore the `_timeout` variable as it won't provide any useful debugging information.
+            Err(_timeout) => {
+                log::warn!(
+                    "searching query source [{}] timed out, skip this request",
+                    query_source.id
+                );
+            }
+            Ok(query_result) => match query_result {
+                Ok(response) => {
+                    total_hits += response.total_hits;
+                    let source_id = response.source.id.clone();
 
-                    all_hits.push((source_id.clone(), query_hit.clone(), score));
+                    for (document, score) in response.hits {
+                        log::debug!(
+                            "document from query source [{}]: ID [{}], title [{:?}], score [{}]",
+                            response.source.id,
+                            document.id,
+                            document.title,
+                            score
+                        );
 
-                    hits_per_source
-                        .entry(source_id.clone())
-                        .or_insert_with(Vec::new)
-                        .push((query_hit, score));
+                        let query_hit = QueryHits {
+                            source: Some(response.source.clone()),
+                            score,
+                            document,
+                        };
+
+                        all_hits.push((source_id.clone(), query_hit.clone(), score));
+
+                        hits_per_source
+                            .entry(source_id.clone())
+                            .or_insert_with(Vec::new)
+                            .push((query_hit, score));
+                    }
                 }
-            }
-            Ok(Err(err)) => {
-                failed_requests.push(FailedRequest {
-                    source: QuerySource {
-                        r#type: "N/A".into(),
-                        name: "N/A".into(),
-                        id: "N/A".into(),
-                    },
-                    status: 0,
-                    error: Some(err.to_string()),
-                    reason: None,
-                });
-            }
-            // Timeout reached, skip this request
-            Ok(_) => {
-                failed_requests.push(FailedRequest {
-                    source: QuerySource {
-                        r#type: "N/A".into(),
-                        name: "N/A".into(),
-                        id: "N/A".into(),
-                    },
-                    status: 0,
-                    error: Some("Query source timed out".to_string()),
-                    reason: None,
-                });
-            }
-            Err(_) => {
-                failed_requests.push(FailedRequest {
-                    source: QuerySource {
-                        r#type: "N/A".into(),
-                        name: "N/A".into(),
-                        id: "N/A".into(),
-                    },
-                    status: 0,
-                    error: Some("Task panicked".to_string()),
-                    reason: None,
-                });
-            }
+                Err(search_error) => {
+                    query_coco_fusion_handle_failed_request(
+                        tauri_app_handle.clone(),
+                        &mut failed_requests,
+                        query_source,
+                        search_error,
+                    )
+                    .await;
+                }
+            },
         }
     }
 
     // Sort hits within each source by score (descending)
     for hits in hits_per_source.values_mut() {
-        hits.sort_by(|a, b| b.1.partial_cmp(&a.1).unwrap_or(std::cmp::Ordering::Equal));
+        hits.sort_by(|a, b| b.1.partial_cmp(&a.1).unwrap_or(std::cmp::Ordering::Greater));
     }
 
     let total_sources = hits_per_source.len();
@@ -140,16 +285,71 @@ pub async fn query_coco_fusion<R: Runtime>(
     // Distribute hits fairly across sources
     for (_source_id, hits) in &mut hits_per_source {
         let take_count = hits.len().min(max_hits_per_source);
-        for (doc, _) in hits.drain(0..take_count) {
+        for (doc, score) in hits.drain(0..take_count) {
             if !seen_docs.contains(&doc.document.id) {
                 seen_docs.insert(doc.document.id.clone());
+                log::debug!(
+                    "collect doc: {}, {:?}, {}",
+                    doc.document.id,
+                    doc.document.title,
+                    score
+                );
                 final_hits.push(doc);
             }
         }
     }
 
-    // If we still need more hits, take the highest-scoring remaining ones
-    if final_hits.len() < size as usize {
+    log::debug!("final hits: {:?}", final_hits.len());
+
+    let mut unique_sources = HashSet::new();
+    for hit in &final_hits {
+        if let Some(source) = &hit.source {
+            if source.id != crate::extension::built_in::calculator::DATA_SOURCE_ID {
+                unique_sources.insert(&source.id);
+            }
+        }
+    }
+
+    log::debug!(
+        "Multiple sources found: {:?}, no rerank needed",
+        unique_sources
+    );
+
+    if unique_sources.len() < 1 {
+        need_rerank = false; // If we have hits from multiple sources, we don't need to rerank
+    }
+
+    if need_rerank && final_hits.len() > 1 {
+        // Precollect (index, title)
+        let titles_to_score: Vec<(usize, &str)> = final_hits
+            .iter()
+            .enumerate()
+            .filter_map(|(idx, hit)| {
+                let source = hit.source.as_ref()?;
+                let title = hit.document.title.as_deref()?;
+
+                if source.id != crate::extension::built_in::calculator::DATA_SOURCE_ID {
+                    Some((idx, title))
+                } else {
+                    None
+                }
+            })
+            .collect();
+
+        // Score them
+        let scored_hits = boosted_levenshtein_rerank(query_keyword.as_str(), titles_to_score);
+
+        // Sort descending by score
+        let mut scored_hits = scored_hits;
+        scored_hits.sort_by_key(|&(_, score)| Reverse((score * 1000.0) as u64));
+
+        // Apply new scores to final_hits
+        for (idx, score) in scored_hits.into_iter().take(size as usize) {
+            final_hits[idx].score = score;
+        }
+    } else if final_hits.len() < size as usize {
+        // If we still need more hits, take the highest-scoring remaining ones
+
         let remaining_needed = size as usize - final_hits.len();
 
         // Sort all hits by score descending, removing duplicates by document ID
@@ -179,9 +379,96 @@ pub async fn query_coco_fusion<R: Runtime>(
             .unwrap_or(std::cmp::Ordering::Equal)
     });
 
+    if final_hits.len() < 5 {
+        //TODO: Add a recommendation system to suggest more sources
+        log::info!(
+            "Less than 5 hits found, consider using recommendation to find more suggestions."
+        );
+        //local: recent history, local extensions
+        //remote: ai agents, quick links, other tasks, managed by server
+    }
+
     Ok(MultiSourceQueryResponse {
         failed: failed_requests,
         hits: final_hits,
         total_hits,
     })
 }
+
+fn boosted_levenshtein_rerank(query: &str, titles: Vec<(usize, &str)>) -> Vec<(usize, f64)> {
+    use strsim::levenshtein;
+
+    let query_lower = query.to_lowercase();
+
+    titles
+        .into_iter()
+        .map(|(idx, title)| {
+            let mut score = 0.0;
+
+            if title.contains(query) {
+                score += 0.4;
+            } else if title.to_lowercase().contains(&query_lower) {
+                score += 0.2;
+            }
+
+            let dist = levenshtein(&query_lower, &title.to_lowercase());
+            let max_len = query_lower.len().max(title.len());
+            if max_len > 0 {
+                score += (1.0 - (dist as f64 / max_len as f64)) as f32;
+            }
+
+            (idx, score.min(1.0) as f64)
+        })
+        .collect()
+}
+
+/// Helper function to handle a failed request.
+///
+/// Extracted as a function because `query_coco_fusion_single_query_source()` and
+/// `query_coco_fusion_multi_query_sources()` share the same error handling logic.
+async fn query_coco_fusion_handle_failed_request(
+    tauri_app_handle: AppHandle,
+    failed_requests: &mut Vec<FailedRequest>,
+    query_source: QuerySource,
+    search_error: SearchError,
+) {
+    log::error!(
+        "searching query source [{}] failed, error [{}]",
+        query_source.id,
+        search_error
+    );
+
+    let mut status_code_num: u16 = 0;
+
+    if let SearchError::HttpError {
+        status_code: opt_status_code,
+        msg: _,
+    } = search_error
+    {
+        if let Some(status_code) = opt_status_code {
+            status_code_num = status_code.as_u16();
+            if status_code != StatusCode::OK {
+                if status_code == StatusCode::UNAUTHORIZED {
+                    // This Coco server is unavailable. In addition to marking it as
+                    // unavailable, we need to log out because the status code is 401.
+                    logout_coco_server(tauri_app_handle.clone(), query_source.id.to_string()).await.unwrap_or_else(|e| {
+                        panic!(
+                          "the search request to Coco server [id {}, name {}] failed with status code {}, the login token is invalid, we are trying to log out, but failed with error [{}]", 
+                          query_source.id, query_source.name, StatusCode::UNAUTHORIZED, e
+                        );
+                    })
+                } else {
+                    // This Coco server is unavailable
+                    mark_server_as_offline(tauri_app_handle.clone(), &query_source.id).await;
+                }
+            }
+        }
+    }
+
+    failed_requests.push(FailedRequest {
+        source: query_source,
+        status: status_code_num,
+        error: Some(search_error.to_string()),
+        reason: None,
+    });
+}

src-tauri/src/server/attachment.rs

@@ -15,42 +15,6 @@ pub struct UploadAttachmentResponse {
     pub attachments: Vec<String>,
 }
 
-#[derive(Debug, Serialize, Deserialize)]
-pub struct AttachmentSource {
-    pub id: String,
-    pub created: String,
-    pub updated: String,
-    pub session: String,
-    pub name: String,
-    pub icon: String,
-    pub url: String,
-    pub size: u64,
-}
-
-#[derive(Debug, Serialize, Deserialize)]
-pub struct AttachmentHit {
-    pub _index: String,
-    pub _type: Option<String>,
-    pub _id: String,
-    pub _score: Option<f64>,
-    pub _source: AttachmentSource,
-}
-
-#[derive(Debug, Serialize, Deserialize)]
-pub struct AttachmentHits {
-    pub total: Value,
-    pub max_score: Option<f64>,
-    pub hits: Vec<AttachmentHit>,
-}
-
-#[derive(Debug, Serialize, Deserialize)]
-pub struct GetAttachmentResponse {
-    pub took: u32,
-    pub timed_out: bool,
-    pub _shards: Value,
-    pub hits: AttachmentHits,
-}
-
 #[derive(Debug, Serialize, Deserialize)]
 pub struct DeleteAttachmentResponse {
     pub _id: String,
@@ -60,7 +24,6 @@ pub struct DeleteAttachmentResponse {
 #[command]
 pub async fn upload_attachment(
     server_id: String,
-    session_id: String,
     file_paths: Vec<PathBuf>,
 ) -> Result<UploadAttachmentResponse, String> {
     let mut form = Form::new();
@@ -82,10 +45,12 @@ pub async fn upload_attachment(
         form = form.part("files", part);
     }
 
-    let server = get_server_by_id(&server_id).ok_or("Server not found")?;
-    let url = HttpClient::join_url(&server.endpoint, &format!("chat/{}/_upload", session_id));
+    let server = get_server_by_id(&server_id)
+        .await
+        .ok_or("Server not found")?;
+    let url = HttpClient::join_url(&server.endpoint, &format!("attachment/_upload"));
 
-    let token = get_server_token(&server_id).await?;
+    let token = get_server_token(&server_id).await;
     let mut headers = HashMap::new();
     if let Some(token) = token {
         headers.insert("X-API-TOKEN".to_string(), token.access_token);
@@ -107,20 +72,25 @@ pub async fn upload_attachment(
 }
 
 #[command]
-pub async fn get_attachment(
+pub async fn get_attachment_by_ids(
     server_id: String,
-    session_id: String,
-) -> Result<GetAttachmentResponse, String> {
-    let mut query_params = HashMap::new();
-    query_params.insert("session".to_string(), serde_json::Value::String(session_id));
+    attachments: Vec<String>,
+) -> Result<Value, String> {
+    println!("get_attachment_by_ids server_id: {}", server_id);
+    println!("get_attachment_by_ids attachments: {:?}", attachments);
 
-    let response = HttpClient::get(&server_id, "/attachment/_search", Some(query_params))
+    let request_body = serde_json::json!({
+        "attachments": attachments
+    });
+    let body = reqwest::Body::from(serde_json::to_string(&request_body).unwrap());
+
+    let response = HttpClient::post(&server_id, "/attachment/_search", None, Some(body))
         .await
         .map_err(|e| format!("Request error: {}", e))?;
 
     let body = get_response_body_text(response).await?;
 
-    serde_json::from_str::<GetAttachmentResponse>(&body)
+    serde_json::from_str::<Value>(&body)
         .map_err(|e| format!("Failed to parse attachment response: {}", e))
 }
 

src-tauri/src/server/auth.rs

@@ -4,31 +4,31 @@ use crate::server::servers::{
     get_server_by_id, persist_servers, persist_servers_token, save_access_token, save_server,
     try_register_server_to_search_source,
 };
-use tauri::{AppHandle, Runtime};
+use tauri::AppHandle;
 
 #[allow(dead_code)]
 fn request_access_token_url(request_id: &str) -> String {
     // Remove the endpoint part and keep just the path for the request
-    format!("/auth/request_access_token?request_id={}", request_id)
+    format!("/auth/access_token?request_id={}", request_id)
 }
 
 #[tauri::command]
-pub async fn handle_sso_callback<R: Runtime>(
-    app_handle: AppHandle<R>,
+pub async fn handle_sso_callback(
+    app_handle: AppHandle,
     server_id: String,
     request_id: String,
     code: String,
 ) -> Result<(), String> {
     // Retrieve the server details using the server ID
-    let server = get_server_by_id(&server_id);
+    let server = get_server_by_id(&server_id).await;
 
     let expire_in = 3600; // TODO, need to update to actual expire_in value
     if let Some(mut server) = server {
         // Save the access token for the server
         let access_token = ServerAccessToken::new(server_id.clone(), code.clone(), expire_in);
         // dbg!(&server_id, &request_id, &code, &token);
-        save_access_token(server_id.clone(), access_token);
-        persist_servers_token(&app_handle)?;
+        save_access_token(server_id.clone(), access_token).await;
+        persist_servers_token(&app_handle).await?;
 
         // Register the server to the search source
         try_register_server_to_search_source(app_handle.clone(), &server).await;
@@ -41,7 +41,7 @@ pub async fn handle_sso_callback<R: Runtime>(
             Ok(p) => {
                 server.profile = Some(p);
                 server.available = true;
-                save_server(&server);
+                save_server(&server).await;
                 persist_servers(&app_handle).await?;
                 Ok(())
             }

src-tauri/src/server/connector.rs

@@ -1,11 +1,12 @@
 use crate::common::connector::Connector;
 use crate::common::search::parse_search_results;
-use crate::server::http_client::HttpClient;
+use crate::server::http_client::{HttpClient, status_code_check};
 use crate::server::servers::get_all_servers;
+use http::StatusCode;
 use lazy_static::lazy_static;
 use std::collections::HashMap;
 use std::sync::{Arc, RwLock};
-use tauri::{AppHandle, Runtime};
+use tauri::AppHandle;
 
 lazy_static! {
     static ref CONNECTOR_CACHE: Arc<RwLock<HashMap<String, HashMap<String, Connector>>>> =
@@ -28,12 +29,16 @@ pub fn get_connector_by_id(server_id: &str, connector_id: &str) -> Option<Connec
     Some(connector.clone())
 }
 
-pub async fn refresh_all_connectors<R: Runtime>(app_handle: &AppHandle<R>) -> Result<(), String> {
-    let servers = get_all_servers();
+pub async fn refresh_all_connectors(app_handle: &AppHandle) -> Result<(), String> {
+    let servers = get_all_servers().await;
 
     // Collect all the tasks for fetching and refreshing connectors
     let mut server_map = HashMap::new();
     for server in servers {
+        if !server.enabled {
+            continue;
+        }
+
         // dbg!("start fetch connectors for server: {}", &server.id);
         let connectors = match get_connectors_by_server(app_handle.clone(), server.id.clone()).await
         {
@@ -103,6 +108,7 @@ pub async fn fetch_connectors_by_server(id: &str) -> Result<Vec<Connector>, Stri
             // dbg!("Error fetching connector for id {}: {}", &id, &e);
             format!("Error fetching connector: {}", e)
         })?;
+    status_code_check(&resp, &[StatusCode::OK, StatusCode::CREATED])?;
 
     // Parse the search results directly from the response body
     let datasource: Vec<Connector> = parse_search_results(resp)
@@ -116,8 +122,8 @@ pub async fn fetch_connectors_by_server(id: &str) -> Result<Vec<Connector>, Stri
 }
 
 #[tauri::command]
-pub async fn get_connectors_by_server<R: Runtime>(
-    _app_handle: AppHandle<R>,
+pub async fn get_connectors_by_server(
+    _app_handle: AppHandle,
     id: String,
 ) -> Result<Vec<Connector>, String> {
     let connectors = fetch_connectors_by_server(&id).await?;

src-tauri/src/server/datasource.rs

@@ -1,19 +1,13 @@
 use crate::common::datasource::DataSource;
 use crate::common::search::parse_search_results;
 use crate::server::connector::get_connector_by_id;
-use crate::server::http_client::HttpClient;
+use crate::server::http_client::{HttpClient, status_code_check};
 use crate::server::servers::get_all_servers;
+use http::StatusCode;
 use lazy_static::lazy_static;
 use std::collections::HashMap;
 use std::sync::{Arc, RwLock};
-use tauri::{AppHandle, Runtime};
-
-#[derive(serde::Deserialize, Debug)]
-pub struct GetDatasourcesByServerOptions {
-    pub from: Option<u32>,
-    pub size: Option<u32>,
-    pub query: Option<String>,
-}
+use tauri::AppHandle;
 
 lazy_static! {
     static ref DATASOURCE_CACHE: Arc<RwLock<HashMap<String, HashMap<String, DataSource>>>> =
@@ -32,21 +26,25 @@ pub fn save_datasource_to_cache(server_id: &str, datasources: Vec<DataSource>) {
 #[allow(dead_code)]
 pub fn get_datasources_from_cache(server_id: &str) -> Option<HashMap<String, DataSource>> {
     let cache = DATASOURCE_CACHE.read().unwrap(); // Acquire read lock
-                                                  // dbg!("cache: {:?}", &cache);
+    // dbg!("cache: {:?}", &cache);
     let server_cache = cache.get(server_id)?; // Get the server's cache
     Some(server_cache.clone())
 }
 
-pub async fn refresh_all_datasources<R: Runtime>(_app_handle: &AppHandle<R>) -> Result<(), String> {
+pub async fn refresh_all_datasources(_app_handle: &AppHandle) -> Result<(), String> {
     // dbg!("Attempting to refresh all datasources");
 
-    let servers = get_all_servers();
+    let servers = get_all_servers().await;
 
     let mut server_map = HashMap::new();
 
     for server in servers {
         // dbg!("fetch datasources for server: {}", &server.id);
 
+        if !server.enabled {
+            continue;
+        }
+
         // Attempt to get datasources by server, and continue even if it fails
         let connectors = match datasource_search(server.id.as_str(), None).await {
             Ok(connectors) => {
@@ -92,50 +90,17 @@ pub async fn refresh_all_datasources<R: Runtime>(_app_handle: &AppHandle<R>) ->
 #[tauri::command]
 pub async fn datasource_search(
     id: &str,
-    options: Option<GetDatasourcesByServerOptions>,
+    query_params: Option<Vec<String>>, //["query=abc", "filter=er", "filter=efg", "from=0", "size=5"],
 ) -> Result<Vec<DataSource>, String> {
-    let from = options.as_ref().and_then(|opt| opt.from).unwrap_or(0);
-    let size = options.as_ref().and_then(|opt| opt.size).unwrap_or(10000);
-    let query = options
-        .and_then(|opt| opt.query)
-        .unwrap_or(String::default());
-
-    let mut body = serde_json::json!({
-        "from": from,
-        "size": size,
-    });
-
-    if !query.is_empty() {
-        body["query"] = serde_json::json!({
-              "bool": {
-                  "must": [{
-                      "query_string": {
-                          "fields": ["combined_fulltext"],
-                          "query": query,
-                          "fuzziness": "AUTO",
-                          "fuzzy_prefix_length": 2,
-                          "fuzzy_max_expansions": 10,
-                          "fuzzy_transpositions": true,
-                          "allow_leading_wildcard": false
-                      }
-                  }]
-              }
-        });
-    }
-
     // Perform the async HTTP request outside the cache lock
-    let resp = HttpClient::post(
-        id,
-        "/datasource/_search",
-        None,
-        Some(reqwest::Body::from(body.to_string())),
-    )
-    .await
-    .map_err(|e| format!("Error fetching datasource: {}", e))?;
+    let resp = HttpClient::post(id, "/datasource/_search", query_params, None)
+        .await
+        .map_err(|e| format!("Error fetching datasource: {}", e))?;
+    status_code_check(&resp, &[StatusCode::OK, StatusCode::CREATED])?;
 
     // Parse the search results from the response
     let datasources: Vec<DataSource> = parse_search_results(resp).await.map_err(|e| {
-        dbg!("Error parsing search results: {}", &e);
+        //dbg!("Error parsing search results: {}", &e);
         e.to_string()
     })?;
 
@@ -148,50 +113,17 @@ pub async fn datasource_search(
 #[tauri::command]
 pub async fn mcp_server_search(
     id: &str,
-    options: Option<GetDatasourcesByServerOptions>,
+    query_params: Option<Vec<String>>,
 ) -> Result<Vec<DataSource>, String> {
-    let from = options.as_ref().and_then(|opt| opt.from).unwrap_or(0);
-    let size = options.as_ref().and_then(|opt| opt.size).unwrap_or(10000);
-    let query = options
-        .and_then(|opt| opt.query)
-        .unwrap_or(String::default());
-
-    let mut body = serde_json::json!({
-        "from": from,
-        "size": size,
-    });
-
-    if !query.is_empty() {
-        body["query"] = serde_json::json!({
-              "bool": {
-                  "must": [{
-                      "query_string": {
-                          "fields": ["combined_fulltext"],
-                          "query": query,
-                          "fuzziness": "AUTO",
-                          "fuzzy_prefix_length": 2,
-                          "fuzzy_max_expansions": 10,
-                          "fuzzy_transpositions": true,
-                          "allow_leading_wildcard": false
-                      }
-                  }]
-              }
-        });
-    }
-
     // Perform the async HTTP request outside the cache lock
-    let resp = HttpClient::post(
-        id,
-        "/mcp_server/_search",
-        None,
-        Some(reqwest::Body::from(body.to_string())),
-    )
-    .await
-    .map_err(|e| format!("Error fetching datasource: {}", e))?;
+    let resp = HttpClient::post(id, "/mcp_server/_search", query_params, None)
+        .await
+        .map_err(|e| format!("Error fetching datasource: {}", e))?;
+    status_code_check(&resp, &[StatusCode::OK, StatusCode::CREATED])?;
 
     // Parse the search results from the response
     let mcp_server: Vec<DataSource> = parse_search_results(resp).await.map_err(|e| {
-        dbg!("Error parsing search results: {}", &e);
+        //dbg!("Error parsing search results: {}", &e);
         e.to_string()
     })?;
 

src-tauri/src/server/http_client.rs

@@ -1,21 +1,52 @@
 use crate::server::servers::{get_server_by_id, get_server_token};
-use http::{HeaderName, HeaderValue};
+use crate::util::app_lang::get_app_lang;
+use crate::util::platform::Platform;
+use http::{HeaderName, HeaderValue, StatusCode};
 use once_cell::sync::Lazy;
 use reqwest::{Client, Method, RequestBuilder};
 use std::collections::HashMap;
+use std::sync::LazyLock;
 use std::time::Duration;
-use tauri_plugin_store::JsonValue;
 use tokio::sync::Mutex;
 
-pub static HTTP_CLIENT: Lazy<Mutex<Client>> = Lazy::new(|| {
-    let client = Client::builder()
-        .read_timeout(Duration::from_secs(3)) // Set a timeout of 3 second
-        .connect_timeout(Duration::from_secs(3)) // Set a timeout of 3 second
-        .timeout(Duration::from_secs(10)) // Set a timeout of 10 seconds
-        .danger_accept_invalid_certs(true) // example for self-signed certificates
+pub(crate) fn new_reqwest_http_client(accept_invalid_certs: bool) -> Client {
+    Client::builder()
+        .read_timeout(Duration::from_secs(60)) // Set a timeout of 60 second
+        .connect_timeout(Duration::from_secs(30)) // Set a timeout of 30 second
+        .timeout(Duration::from_secs(5 * 60)) // Set a timeout of 5 minute
+        .danger_accept_invalid_certs(accept_invalid_certs) // allow self-signed certificates
         .build()
-        .expect("Failed to build client");
-    Mutex::new(client)
+        .expect("Failed to build client")
+}
+
+pub static HTTP_CLIENT: Lazy<Mutex<Client>> = Lazy::new(|| {
+    let allow_self_signature = crate::settings::_get_allow_self_signature(
+        crate::GLOBAL_TAURI_APP_HANDLE
+            .get()
+            .expect("global tauri app store not set")
+            .clone(),
+    );
+    Mutex::new(new_reqwest_http_client(allow_self_signature))
+});
+
+/// These header values won't change during a process's lifetime.
+static STATIC_HEADERS: LazyLock<HashMap<String, String>> = LazyLock::new(|| {
+    HashMap::from([
+        (
+            "X-OS-NAME".into(),
+            Platform::current()
+                .to_os_name_http_header_str()
+                .into_owned(),
+        ),
+        (
+            "X-OS-VER".into(),
+            sysinfo::System::os_version()
+                .expect("sysinfo::System::os_version() should be Some on major systems"),
+        ),
+        ("X-OS-ARCH".into(), sysinfo::System::cpu_arch()),
+        ("X-APP-NAME".into(), "coco-app".into()),
+        ("X-APP-VER".into(), env!("CARGO_PKG_VERSION").into()),
+    ])
 });
 
 pub struct HttpClient;
@@ -31,17 +62,33 @@ impl HttpClient {
     pub async fn send_raw_request(
         method: Method,
         url: &str,
-        query_params: Option<HashMap<String, JsonValue>>,
+        query_params: Option<Vec<String>>,
         headers: Option<HashMap<String, String>>,
         body: Option<reqwest::Body>,
     ) -> Result<reqwest::Response, String> {
+        log::debug!(
+            "Sending Request: {}, query_params: {:?}, header: {:?}, body: {:?}",
+            &url,
+            &query_params,
+            &headers,
+            &body
+        );
+
         let request_builder =
             Self::get_request_builder(method, url, headers, query_params, body).await;
 
         let response = request_builder.send().await.map_err(|e| {
-            dbg!("Failed to send request: {}", &e);
+            //dbg!("Failed to send request: {}", &e);
             format!("Failed to send request: {}", e)
         })?;
+
+        log::debug!(
+            "Request: {}, Response status: {:?}, header: {:?}",
+            &url,
+            &response.status(),
+            &response.headers()
+        );
+
         Ok(response)
     }
 
@@ -49,7 +96,7 @@ impl HttpClient {
         method: Method,
         url: &str,
         headers: Option<HashMap<String, String>>,
-        query_params: Option<HashMap<String, JsonValue>>, // Add query parameters
+        query_params: Option<Vec<String>>, // Add query parameters
         body: Option<reqwest::Body>,
     ) -> RequestBuilder {
         let client = HTTP_CLIENT.lock().await; // Acquire the lock on HTTP_CLIENT
@@ -57,8 +104,32 @@ impl HttpClient {
         // Build the request
         let mut request_builder = client.request(method.clone(), url);
 
+        // Populate the headers defined by us
+        let mut req_headers = reqwest::header::HeaderMap::new();
+        for (key, value) in STATIC_HEADERS.iter() {
+            let key = HeaderName::from_bytes(key.as_bytes())
+                .expect("headers defined by us should be valid");
+            let value = HeaderValue::from_str(value.trim()).unwrap_or_else(|e| {
+                panic!(
+                    "header value [{}] is invalid, error [{}], this should be unreachable",
+                    value, e
+                );
+            });
+            req_headers.insert(key, value);
+        }
+        let app_lang = get_app_lang().await.to_string();
+        req_headers.insert(
+            "X-APP-LANG",
+            HeaderValue::from_str(&app_lang).unwrap_or_else(|e| {
+                panic!(
+                    "header value [{}] is invalid, error [{}], this should be unreachable",
+                    app_lang, e
+                );
+            }),
+        );
+
+        // Headers from the function parameter
         if let Some(h) = headers {
-            let mut req_headers = reqwest::header::HeaderMap::new();
             for (key, value) in h.into_iter() {
                 match (
                     HeaderName::from_bytes(key.as_bytes()),
@@ -81,24 +152,9 @@ impl HttpClient {
             request_builder = request_builder.headers(req_headers);
         }
 
-        if let Some(query) = query_params {
-            // Convert only supported value types into strings
-            let query: HashMap<String, String> = query
-                .into_iter()
-                .filter_map(|(k, v)| {
-                    match v {
-                        JsonValue::String(s) => Some((k, s)),
-                        JsonValue::Number(n) => Some((k, n.to_string())),
-                        JsonValue::Bool(b) => Some((k, b.to_string())),
-                        _ => {
-                            dbg!(
-                                "Unsupported query parameter type. Only strings, numbers, and booleans are supported.",k,v,
-                            );
-                            None
-                        } // skip arrays, objects, nulls
-                    }
-                })
-                .collect();
+        if let Some(params) = query_params {
+            let query: Vec<(&str, &str)> =
+                params.iter().filter_map(|s| s.split_once('=')).collect();
             request_builder = request_builder.query(&query);
         }
 
@@ -115,18 +171,18 @@ impl HttpClient {
         method: Method,
         path: &str,
         custom_headers: Option<HashMap<String, String>>,
-        query_params: Option<HashMap<String, JsonValue>>,
+        query_params: Option<Vec<String>>,
         body: Option<reqwest::Body>,
     ) -> Result<reqwest::Response, String> {
         // Fetch the server using the server_id
-        let server = get_server_by_id(server_id);
+        let server = get_server_by_id(server_id).await;
         if let Some(s) = server {
             // Construct the URL
             let url = HttpClient::join_url(&s.endpoint, path);
 
             // Retrieve the token for the server (token is optional)
             let token = get_server_token(server_id)
-                .await?
+                .await
                 .map(|t| t.access_token.clone());
 
             let mut headers = if let Some(custom_headers) = custom_headers {
@@ -140,13 +196,16 @@ impl HttpClient {
                 headers.insert("X-API-TOKEN".to_string(), t);
             }
 
-            // dbg!(&server_id);
-            // dbg!(&url);
-            // dbg!(&headers);
+            // log::debug!(
+            //     "Sending request to server: {}, url: {}, headers: {:?}",
+            //     &server_id,
+            //     &url,
+            //     &headers
+            // );
 
             Self::send_raw_request(method, &url, query_params, Some(headers), body).await
         } else {
-            Err("Server not found".to_string())
+            Err(format!("Server [{}] not found", server_id))
         }
     }
 
@@ -154,7 +213,7 @@ impl HttpClient {
     pub async fn get(
         server_id: &str,
         path: &str,
-        query_params: Option<HashMap<String, JsonValue>>, // Add query parameters
+        query_params: Option<Vec<String>>,
     ) -> Result<reqwest::Response, String> {
         HttpClient::send_request(server_id, Method::GET, path, None, query_params, None).await
     }
@@ -163,7 +222,7 @@ impl HttpClient {
     pub async fn post(
         server_id: &str,
         path: &str,
-        query_params: Option<HashMap<String, JsonValue>>, // Add query parameters
+        query_params: Option<Vec<String>>,
         body: Option<reqwest::Body>,
     ) -> Result<reqwest::Response, String> {
         HttpClient::send_request(server_id, Method::POST, path, None, query_params, body).await
@@ -173,7 +232,7 @@ impl HttpClient {
         server_id: &str,
         path: &str,
         custom_headers: Option<HashMap<String, String>>,
-        query_params: Option<HashMap<String, JsonValue>>, // Add query parameters
+        query_params: Option<Vec<String>>,
         body: Option<reqwest::Body>,
     ) -> Result<reqwest::Response, String> {
         HttpClient::send_request(
@@ -184,7 +243,7 @@ impl HttpClient {
             query_params,
             body,
         )
-            .await
+        .await
     }
 
     // Convenience method for PUT requests
@@ -193,7 +252,7 @@ impl HttpClient {
         server_id: &str,
         path: &str,
         custom_headers: Option<HashMap<String, String>>,
-        query_params: Option<HashMap<String, JsonValue>>, // Add query parameters
+        query_params: Option<Vec<String>>,
         body: Option<reqwest::Body>,
     ) -> Result<reqwest::Response, String> {
         HttpClient::send_request(
@@ -204,7 +263,7 @@ impl HttpClient {
             query_params,
             body,
         )
-            .await
+        .await
     }
 
     // Convenience method for DELETE requests
@@ -213,7 +272,7 @@ impl HttpClient {
         server_id: &str,
         path: &str,
         custom_headers: Option<HashMap<String, String>>,
-        query_params: Option<HashMap<String, JsonValue>>, // Add query parameters
+        query_params: Option<Vec<String>>,
     ) -> Result<reqwest::Response, String> {
         HttpClient::send_request(
             server_id,
@@ -223,6 +282,33 @@ impl HttpClient {
             query_params,
             None,
         )
-            .await
+        .await
+    }
+}
+
+/// Helper function to check status code.
+///
+/// If the status code is not in the `allowed_status_codes` list, return an error.
+pub(crate) fn status_code_check(
+    response: &reqwest::Response,
+    allowed_status_codes: &[StatusCode],
+) -> Result<(), String> {
+    let status_code = response.status();
+
+    if !allowed_status_codes.contains(&status_code) {
+        let msg = format!(
+            "Response of request [{}] status code failed: status code [{}], which is not in the 'allow' list {:?}",
+            response.url(),
+            status_code,
+            allowed_status_codes
+                .iter()
+                .map(|status| status.to_string())
+                .collect::<Vec<String>>()
+        );
+        log::warn!("{}", msg);
+
+        Err(msg)
+    } else {
+        Ok(())
     }
 }

src-tauri/src/server/mod.rs

@@ -8,6 +8,6 @@ pub mod http_client;
 pub mod profile;
 pub mod search;
 pub mod servers;
+pub mod synthesize;
 pub mod system_settings;
 pub mod transcription;
-pub mod websocket;

src-tauri/src/server/profile.rs

@@ -1,11 +1,11 @@
 use crate::common::http::get_response_body_text;
 use crate::common::profile::UserProfile;
 use crate::server::http_client::HttpClient;
-use tauri::{AppHandle, Runtime};
+use tauri::AppHandle;
 
 #[tauri::command]
-pub async fn get_user_profiles<R: Runtime>(
-    _app_handle: AppHandle<R>,
+pub async fn get_user_profiles(
+    _app_handle: AppHandle,
     server_id: String,
 ) -> Result<UserProfile, String> {
     // Use the generic GET method from HttpClient

src-tauri/src/server/search.rs

@@ -1,17 +1,15 @@
-use crate::common::document::Document;
+use crate::common::document::{Document, OnOpened};
 use crate::common::error::SearchError;
 use crate::common::http::get_response_body_text;
 use crate::common::search::{QueryHits, QueryResponse, QuerySource, SearchQuery, SearchResponse};
 use crate::common::server::Server;
 use crate::common::traits::SearchSource;
 use crate::server::http_client::HttpClient;
-use crate::server::servers::get_server_token;
 use async_trait::async_trait;
-// use futures::stream::StreamExt;
 use ordered_float::OrderedFloat;
-use reqwest::{Client, Method, RequestBuilder};
+use reqwest::StatusCode;
 use std::collections::HashMap;
-// use std::hash::Hash;
+use tauri::AppHandle;
 
 #[allow(dead_code)]
 pub(crate) struct DocumentsSizedCollector {
@@ -46,7 +44,7 @@ impl DocumentsSizedCollector {
         }
     }
 
-    fn documents(self) -> impl ExactSizeIterator<Item=Document> {
+    fn documents(self) -> impl ExactSizeIterator<Item = Document> {
         self.docs.into_iter().map(|(_, doc, _)| doc)
     }
 
@@ -74,45 +72,11 @@ const COCO_SERVERS: &str = "coco-servers";
 
 pub struct CocoSearchSource {
     server: Server,
-    client: Client,
 }
 
 impl CocoSearchSource {
-    pub fn new(server: Server, client: Client) -> Self {
-        CocoSearchSource { server, client }
-    }
-
-    async fn build_request_from_query(
-        &self,
-        query: &SearchQuery,
-    ) -> Result<RequestBuilder, String> {
-        self.build_request(query.from, query.size, &query.query_strings)
-            .await
-    }
-
-    async fn build_request(
-        &self,
-        from: u64,
-        size: u64,
-        query_strings: &HashMap<String, String>,
-    ) -> Result<RequestBuilder, String> {
-        let url = HttpClient::join_url(&self.server.endpoint, "/query/_search");
-        let mut request_builder = self.client.request(Method::GET, url);
-
-        if !self.server.public {
-            if let Some(token) = get_server_token(&self.server.id)
-                .await?
-                .map(|t| t.access_token)
-            {
-                request_builder = request_builder.header("X-API-TOKEN", token);
-            }
-        }
-
-        let result = request_builder
-            .query(&[("from", &from.to_string()), ("size", &size.to_string())])
-            .query(query_strings);
-
-        Ok(result)
+    pub fn new(server: Server) -> Self {
+        CocoSearchSource { server }
     }
 }
 
@@ -126,36 +90,74 @@ impl SearchSource for CocoSearchSource {
         }
     }
 
-    async fn search(&self, query: SearchQuery) -> Result<QueryResponse, SearchError> {
-        // Build the request from the provided query
-        let request_builder = self
-            .build_request_from_query(&query)
-            .await
-            .map_err(|e| SearchError::InternalError(e.to_string()))?;
+    async fn search(
+        &self,
+        _tauri_app_handle: AppHandle,
+        query: SearchQuery,
+    ) -> Result<QueryResponse, SearchError> {
+        let url = "/query/_search";
+        let mut total_hits = 0;
+        let mut hits: Vec<(Document, f64)> = Vec::new();
 
-        // Send the HTTP request and handle errors
-        let response = request_builder
-            .send()
+        let mut query_params = Vec::new();
+
+        // Add from/size as number values
+        query_params.push(format!("from={}", query.from));
+        query_params.push(format!("size={}", query.size));
+
+        // Add query strings
+        for (key, value) in query.query_strings {
+            query_params.push(format!("{}={}", key, value));
+        }
+
+        let response = HttpClient::get(&self.server.id, &url, Some(query_params))
             .await
-            .map_err(|e| SearchError::HttpError(format!("Failed to send search request: {}", e)))?;
+            .map_err(|e| SearchError::HttpError {
+                status_code: None,
+                msg: format!("{}", e),
+            })?;
+        let status_code = response.status();
+
+        if ![StatusCode::OK, StatusCode::CREATED].contains(&status_code) {
+            return Err(SearchError::HttpError {
+                status_code: Some(status_code),
+                msg: format!("Request failed with status code [{}]", status_code),
+            });
+        }
 
         // Use the helper function to parse the response body
         let response_body = get_response_body_text(response)
             .await
-            .map_err(|e| SearchError::ParseError(format!("Failed to read response body: {}", e)))?;
+            .map_err(|e| SearchError::ParseError(e))?;
 
-        // Parse the search response from the body text
-        let parsed: SearchResponse<Document> = serde_json::from_str(&response_body)
-            .map_err(|e| SearchError::ParseError(format!("Failed to parse search response: {}", e)))?;
+        // Check if the response body is empty
+        if !response_body.is_empty() {
+            // log::info!("Search response body: {}", &response_body);
 
-        // Process the parsed response
-        let total_hits = parsed.hits.total.value as usize;
-        let hits: Vec<(Document, f64)> = parsed
-            .hits
-            .hits
-            .into_iter()
-            .map(|hit| (hit._source, hit._score.unwrap_or(0.0))) // Default _score to 0.0 if None
-            .collect();
+            // Parse the search response from the body text
+            let parsed: SearchResponse<Document> = serde_json::from_str(&response_body)
+                .map_err(|e| SearchError::ParseError(format!("{}", e)))?;
+
+            // Process the parsed response
+            total_hits = parsed.hits.total.value as usize;
+
+            if let Some(items) = parsed.hits.hits {
+                for hit in items {
+                    let mut document = hit._source;
+                    // Default _score to 0.0 if None
+                    let score = hit._score.unwrap_or(0.0);
+
+                    let on_opened = document
+                        .url
+                        .as_ref()
+                        .map(|url| OnOpened::Document { url: url.clone() });
+                    // Set the `on_opened` field as it won't be returned from Coco server
+                    document.on_opened = on_opened;
+
+                    hits.push((document, score));
+                }
+            }
+        }
 
         // Return the final result
         Ok(QueryResponse {

src-tauri/src/server/servers.rs

@@ -1,3 +1,4 @@
+use crate::COCO_TAURI_STORE;
 use crate::common::http::get_response_body_text;
 use crate::common::register::SearchSourceRegistry;
 use crate::common::server::{AuthProvider, Provider, Server, ServerAccessToken, Sso, Version};
@@ -5,68 +6,71 @@ use crate::server::connector::fetch_connectors_by_server;
 use crate::server::datasource::datasource_search;
 use crate::server::http_client::HttpClient;
 use crate::server::search::CocoSearchSource;
-use crate::COCO_TAURI_STORE;
-use lazy_static::lazy_static;
-use reqwest::{Client, Method};
-use serde_json::from_value;
+use function_name;
+use http::StatusCode;
+use reqwest::Method;
 use serde_json::Value as JsonValue;
+use serde_json::from_value;
 use std::collections::HashMap;
-use std::sync::Arc;
-use std::sync::RwLock;
-use tauri::Runtime;
+use std::sync::LazyLock;
 use tauri::{AppHandle, Manager};
 use tauri_plugin_store::StoreExt;
-// Assuming you're using serde_json
+use tokio::sync::RwLock;
 
-lazy_static! {
-    static ref SERVER_CACHE: Arc<RwLock<HashMap<String, Server>>> =
-        Arc::new(RwLock::new(HashMap::new()));
-    static ref SERVER_TOKEN: Arc<RwLock<HashMap<String, ServerAccessToken>>> =
-        Arc::new(RwLock::new(HashMap::new()));
-}
+/// Coco sever list
+static SERVER_LIST_CACHE: LazyLock<RwLock<HashMap<String, Server>>> =
+    LazyLock::new(|| RwLock::new(HashMap::new()));
 
-#[allow(dead_code)]
-fn check_server_exists(id: &str) -> bool {
-    let cache = SERVER_CACHE.read().unwrap(); // Acquire read lock
-    cache.contains_key(id)
-}
+/// If a server has a token stored here that has not expired, it is considered logged in.
+///
+/// Since the `expire_at` field of `struct ServerAccessToken` is currently unused,
+/// all servers stored here are treated as logged in.
+static SERVER_TOKEN_LIST_CACHE: LazyLock<RwLock<HashMap<String, ServerAccessToken>>> =
+    LazyLock::new(|| RwLock::new(HashMap::new()));
 
-pub fn get_server_by_id(id: &str) -> Option<Server> {
-    let cache = SERVER_CACHE.read().unwrap(); // Acquire read lock
+/// `SERVER_LIST_CACHE` will be stored in KV store COCO_TAURI_STORE, under this key.
+pub const COCO_SERVERS: &str = "coco_servers";
+
+/// `SERVER_TOKEN_LIST_CACHE` will be stored in KV store COCO_TAURI_STORE, under this key.
+const COCO_SERVER_TOKENS: &str = "coco_server_tokens";
+
+pub async fn get_server_by_id(id: &str) -> Option<Server> {
+    let cache = SERVER_LIST_CACHE.read().await;
     cache.get(id).cloned()
 }
 
-#[tauri::command]
-pub async fn get_server_token(id: &str) -> Result<Option<ServerAccessToken>, String> {
-    let cache = SERVER_TOKEN.read().map_err(|err| err.to_string())?;
+pub async fn get_server_token(id: &str) -> Option<ServerAccessToken> {
+    let cache = SERVER_TOKEN_LIST_CACHE.read().await;
 
-    Ok(cache.get(id).cloned())
+    cache.get(id).cloned()
 }
 
-pub fn save_access_token(server_id: String, token: ServerAccessToken) -> bool {
-    let mut cache = SERVER_TOKEN.write().unwrap();
+pub async fn save_access_token(server_id: String, token: ServerAccessToken) -> bool {
+    let mut cache = SERVER_TOKEN_LIST_CACHE.write().await;
     cache.insert(server_id, token).is_none()
 }
 
-fn check_endpoint_exists(endpoint: &str) -> bool {
-    let cache = SERVER_CACHE.read().unwrap();
+async fn check_endpoint_exists(endpoint: &str) -> bool {
+    let cache = SERVER_LIST_CACHE.read().await;
     cache.values().any(|server| server.endpoint == endpoint)
 }
 
-pub fn save_server(server: &Server) -> bool {
-    let mut cache = SERVER_CACHE.write().unwrap();
-    cache.insert(server.id.clone(), server.clone()).is_none() // If the server id did not exist, `insert` will return `None`
+/// Return true if `server` does not exists in the server list, i.e., it is a newly-added
+/// server.
+pub async fn save_server(server: &Server) -> bool {
+    let mut cache = SERVER_LIST_CACHE.write().await;
+    cache.insert(server.id.clone(), server.clone()).is_none()
 }
 
-fn remove_server_by_id(id: String) -> bool {
-    dbg!("remove server by id:", &id);
-    let mut cache = SERVER_CACHE.write().unwrap();
-    let deleted = cache.remove(id.as_str());
-    deleted.is_some()
+/// Return the removed `Server` if it exists in the server list.
+async fn remove_server_by_id(id: &str) -> Option<Server> {
+    log::debug!("remove server by id: {}", &id);
+    let mut cache = SERVER_LIST_CACHE.write().await;
+    cache.remove(id)
 }
 
-pub async fn persist_servers<R: Runtime>(app_handle: &AppHandle<R>) -> Result<(), String> {
-    let cache = SERVER_CACHE.read().unwrap(); // Acquire a read lock, not a write lock, since you're not modifying the cache
+pub async fn persist_servers(app_handle: &AppHandle) -> Result<(), String> {
+    let cache = SERVER_LIST_CACHE.read().await;
 
     // Convert HashMap to Vec for serialization (iterating over values of HashMap)
     let servers: Vec<Server> = cache.values().cloned().collect();
@@ -86,14 +90,16 @@ pub async fn persist_servers<R: Runtime>(app_handle: &AppHandle<R>) -> Result<()
     Ok(())
 }
 
-pub fn remove_server_token(id: &str) -> bool {
-    dbg!("remove server token by id:", &id);
-    let mut cache = SERVER_TOKEN.write().unwrap();
+/// Return true if the server token of the server specified by `id` exists in
+/// the token list and gets deleted.
+pub async fn remove_server_token(id: &str) -> bool {
+    log::debug!("remove server token by id: {}", &id);
+    let mut cache = SERVER_TOKEN_LIST_CACHE.write().await;
     cache.remove(id).is_some()
 }
 
-pub fn persist_servers_token<R: Runtime>(app_handle: &AppHandle<R>) -> Result<(), String> {
-    let cache = SERVER_TOKEN.read().unwrap(); // Acquire a read lock, not a write lock, since you're not modifying the cache
+pub async fn persist_servers_token(app_handle: &AppHandle) -> Result<(), String> {
+    let cache = SERVER_TOKEN_LIST_CACHE.read().await;
 
     // Convert HashMap to Vec for serialization (iterating over values of HashMap)
     let servers: Vec<ServerAccessToken> = cache.values().cloned().collect();
@@ -104,7 +110,7 @@ pub fn persist_servers_token<R: Runtime>(app_handle: &AppHandle<R>) -> Result<()
         .map(|server| serde_json::to_value(server).expect("Failed to serialize access_tokens")) // Automatically serialize all fields
         .collect();
 
-    dbg!(format!("persist servers token: {:?}", &json_servers));
+    log::debug!("persist servers token: {:?}", &json_servers);
 
     // Save the serialized servers to Tauri's store
     app_handle
@@ -143,17 +149,16 @@ fn get_default_server() -> Server {
         profile: None,
         auth_provider: AuthProvider {
             sso: Sso {
-                url: "https://coco.infini.cloud/sso/login/".to_string(),
+                url: "https://coco.infini.cloud/sso/login/cloud?provider=coco-cloud&product=coco".to_string(),
             },
         },
         priority: 0,
+        stats: None,
     }
 }
 
-pub async fn load_servers_token<R: Runtime>(
-    app_handle: &AppHandle<R>,
-) -> Result<Vec<ServerAccessToken>, String> {
-    dbg!("Attempting to load servers token");
+pub async fn load_servers_token(app_handle: &AppHandle) -> Result<Vec<ServerAccessToken>, String> {
+    log::debug!("Attempting to load servers token");
 
     let store = app_handle
         .store(COCO_TAURI_STORE)
@@ -172,33 +177,46 @@ pub async fn load_servers_token<R: Runtime>(
         servers.ok_or_else(|| "Failed to read servers from store: No servers found".to_string())?;
 
     // Convert each item in the JsonValue array to a Server
-    if let JsonValue::Array(servers_array) = servers {
-        // Deserialize each JsonValue into Server, filtering out any errors
-        let deserialized_tokens: Vec<ServerAccessToken> = servers_array
-            .into_iter()
-            .filter_map(|server_json| from_value(server_json).ok()) // Only keep valid Server instances
-            .collect();
+    match servers {
+        JsonValue::Array(servers_array) => {
+            let mut deserialized_tokens: Vec<ServerAccessToken> =
+                Vec::with_capacity(servers_array.len());
+            for server_json in servers_array {
+                match from_value(server_json.clone()) {
+                    Ok(token) => {
+                        deserialized_tokens.push(token);
+                    }
+                    Err(e) => {
+                        panic!(
+                            "failed to deserialize JSON [{}] to [struct ServerAccessToken], error [{}], store [{}] key [{}] is possibly corrupted!",
+                            server_json, e, COCO_TAURI_STORE, COCO_SERVER_TOKENS
+                        );
+                    }
+                }
+            }
 
-        if deserialized_tokens.is_empty() {
-            return Err("Failed to deserialize any servers from the store.".to_string());
+            if deserialized_tokens.is_empty() {
+                return Err("Failed to deserialize any servers from the store.".to_string());
+            }
+
+            for server in deserialized_tokens.iter() {
+                save_access_token(server.id.clone(), server.clone()).await;
+            }
+
+            log::debug!("loaded {:?} servers's token", &deserialized_tokens.len());
+
+            Ok(deserialized_tokens)
         }
-
-        for server in deserialized_tokens.iter() {
-            save_access_token(server.id.clone(), server.clone());
+        _ => {
+            unreachable!(
+                "coco server tokens should be stored in an array under store [{}] key [{}], but it is not",
+                COCO_TAURI_STORE, COCO_SERVER_TOKENS
+            );
         }
-
-        dbg!(format!(
-            "loaded {:?} servers's token",
-            &deserialized_tokens.len()
-        ));
-
-        Ok(deserialized_tokens)
-    } else {
-        Err("Failed to read servers from store: Invalid format".to_string())
     }
 }
 
-pub async fn load_servers<R: Runtime>(app_handle: &AppHandle<R>) -> Result<Vec<Server>, String> {
+pub async fn load_servers(app_handle: &AppHandle) -> Result<Vec<Server>, String> {
     let store = app_handle
         .store(COCO_TAURI_STORE)
         .expect("create or load a store should not fail");
@@ -216,91 +234,89 @@ pub async fn load_servers<R: Runtime>(app_handle: &AppHandle<R>) -> Result<Vec<S
         servers.ok_or_else(|| "Failed to read servers from store: No servers found".to_string())?;
 
     // Convert each item in the JsonValue array to a Server
-    if let JsonValue::Array(servers_array) = servers {
-        // Deserialize each JsonValue into Server, filtering out any errors
-        let deserialized_servers: Vec<Server> = servers_array
-            .into_iter()
-            .filter_map(|server_json| from_value(server_json).ok()) // Only keep valid Server instances
-            .collect();
+    match servers {
+        JsonValue::Array(servers_array) => {
+            let mut deserialized_servers = Vec::with_capacity(servers_array.len());
+            for server_json in servers_array {
+                match from_value(server_json.clone()) {
+                    Ok(server) => {
+                        deserialized_servers.push(server);
+                    }
+                    Err(e) => {
+                        panic!(
+                            "failed to deserialize JSON [{}] to [struct Server], error [{}], store [{}] key [{}] is possibly corrupted!",
+                            server_json, e, COCO_TAURI_STORE, COCO_SERVERS
+                        );
+                    }
+                }
+            }
 
-        if deserialized_servers.is_empty() {
-            return Err("Failed to deserialize any servers from the store.".to_string());
+            if deserialized_servers.is_empty() {
+                return Err("Failed to deserialize any servers from the store.".to_string());
+            }
+
+            for server in deserialized_servers.iter() {
+                save_server(&server).await;
+            }
+
+            log::debug!("load servers: {:?}", &deserialized_servers);
+
+            Ok(deserialized_servers)
         }
-
-        for server in deserialized_servers.iter() {
-            save_server(&server);
+        _ => {
+            unreachable!(
+                "coco servers should be stored in an array under store [{}] key [{}], but it is not",
+                COCO_TAURI_STORE, COCO_SERVERS
+            );
         }
-
-        // dbg!(format!("load servers: {:?}", &deserialized_servers));
-
-        Ok(deserialized_servers)
-    } else {
-        Err("Failed to read servers from store: Invalid format".to_string())
     }
 }
 
 /// Function to load servers or insert a default one if none exist
-pub async fn load_or_insert_default_server<R: Runtime>(
-    app_handle: &AppHandle<R>,
-) -> Result<Vec<Server>, String> {
-    dbg!("Attempting to load or insert default server");
+pub async fn load_or_insert_default_server(app_handle: &AppHandle) -> Result<Vec<Server>, String> {
+    log::debug!("Attempting to load or insert default server");
 
     let exists_servers = load_servers(&app_handle).await;
     if exists_servers.is_ok() && !exists_servers.as_ref()?.is_empty() {
-        dbg!(format!("loaded {} servers", &exists_servers.clone()?.len()));
+        log::debug!("loaded {} servers", &exists_servers.clone()?.len());
         return exists_servers;
     }
 
     let default = get_default_server();
-    save_server(&default);
+    save_server(&default).await;
 
-    dbg!("loaded default servers");
+    log::debug!("loaded default servers");
 
     Ok(vec![default])
 }
 
 #[tauri::command]
-pub async fn list_coco_servers<R: Runtime>(
-    _app_handle: AppHandle<R>,
-) -> Result<Vec<Server>, String> {
+pub async fn list_coco_servers(app_handle: AppHandle) -> Result<Vec<Server>, String> {
     //hard fresh all server's info, in order to get the actual health
-    refresh_all_coco_server_info(_app_handle.clone()).await;
+    refresh_all_coco_server_info(app_handle.clone()).await;
+
+    let servers: Vec<Server> = get_all_servers().await;
 
-    let servers: Vec<Server> = get_all_servers();
     Ok(servers)
 }
 
-#[allow(dead_code)]
-pub fn get_servers_as_hashmap() -> HashMap<String, Server> {
-    let cache = SERVER_CACHE.read().unwrap();
-    cache.clone()
-}
-
-pub fn get_all_servers() -> Vec<Server> {
-    let cache = SERVER_CACHE.read().unwrap();
+pub async fn get_all_servers() -> Vec<Server> {
+    let cache = SERVER_LIST_CACHE.read().await;
     cache.values().cloned().collect()
 }
 
-/// We store added Coco servers in the Tauri store using this key.
-pub const COCO_SERVERS: &str = "coco_servers";
-
-const COCO_SERVER_TOKENS: &str = "coco_server_tokens";
-
-pub async fn refresh_all_coco_server_info<R: Runtime>(app_handle: AppHandle<R>) {
-    let servers = get_all_servers();
+pub async fn refresh_all_coco_server_info(app_handle: AppHandle) {
+    let servers = get_all_servers().await;
     for server in servers {
         let _ = refresh_coco_server_info(app_handle.clone(), server.id.clone()).await;
     }
 }
 
 #[tauri::command]
-pub async fn refresh_coco_server_info<R: Runtime>(
-    app_handle: AppHandle<R>,
-    id: String,
-) -> Result<Server, String> {
+pub async fn refresh_coco_server_info(app_handle: AppHandle, id: String) -> Result<Server, String> {
     // Retrieve the server from the cache
     let cached_server = {
-        let cache = SERVER_CACHE.read().unwrap();
+        let cache = SERVER_LIST_CACHE.read().await;
         cache.get(&id).cloned()
     };
 
@@ -315,12 +331,16 @@ pub async fn refresh_coco_server_info<R: Runtime>(
     let profile = server.profile;
 
     // Send request to fetch updated server info
-    let response = HttpClient::get(&id, "/provider/_info", None)
-        .await
-        .map_err(|e| format!("Failed to contact the server: {}", e))?;
+    let response = match HttpClient::get(&id, "/provider/_info", None).await {
+        Ok(response) => response,
+        Err(e) => {
+            mark_server_as_offline(app_handle, &id).await;
+            return Err(e);
+        }
+    };
 
     if !response.status().is_success() {
-        mark_server_as_offline(&id).await;
+        mark_server_as_offline(app_handle, &id).await;
         return Err(format!("Request failed with status: {}", response.status()));
     }
 
@@ -335,12 +355,22 @@ pub async fn refresh_coco_server_info<R: Runtime>(
     updated_server.id = id.clone();
     updated_server.builtin = is_builtin;
     updated_server.enabled = is_enabled;
-    updated_server.available = true;
+    updated_server.available = {
+        if server.public {
+            // Public Coco servers are available as long as they are online.
+            true
+        } else {
+            // For non-public Coco servers, we still need to check if it is
+            // logged in, i.e., has a token stored in `SERVER_TOKEN_LIST_CACHE`.
+            get_server_token(&id).await.is_some()
+        }
+    };
     updated_server.profile = profile;
     trim_endpoint_last_forward_slash(&mut updated_server);
 
     // Save and persist
-    save_server(&updated_server);
+    save_server(&updated_server).await;
+    try_register_server_to_search_source(app_handle.clone(), &updated_server).await;
     persist_servers(&app_handle)
         .await
         .map_err(|e| format!("Failed to persist servers: {}", e))?;
@@ -353,21 +383,18 @@ pub async fn refresh_coco_server_info<R: Runtime>(
 }
 
 #[tauri::command]
-pub async fn add_coco_server<R: Runtime>(
-    app_handle: AppHandle<R>,
-    endpoint: String,
-) -> Result<Server, String> {
+pub async fn add_coco_server(app_handle: AppHandle, endpoint: String) -> Result<Server, String> {
     load_or_insert_default_server(&app_handle)
         .await
         .map_err(|e| format!("Failed to load default servers: {}", e))?;
 
     let endpoint = endpoint.trim_end_matches('/');
 
-    if check_endpoint_exists(endpoint) {
-        dbg!(format!(
-            "This Coco server has already been registered: {:?}",
-            &endpoint
-        ));
+    if check_endpoint_exists(endpoint).await {
+        log::debug!(
+            "trying to register a Coco server [{}] that has already been registered",
+            endpoint
+        );
         return Err("This Coco server has already been registered.".into());
     }
 
@@ -376,7 +403,16 @@ pub async fn add_coco_server<R: Runtime>(
         .await
         .map_err(|e| format!("Failed to send request to the server: {}", e))?;
 
-    dbg!(format!("Get provider info response: {:?}", &response));
+    log::debug!("Get provider info response: {:?}", &response);
+
+    if response.status() != StatusCode::OK {
+        log::debug!(
+            "trying to register a Coco server [{}] that is possibly down",
+            endpoint
+        );
+
+        return Err("This Coco server is possibly down".into());
+    }
 
     let body = get_response_body_text(response).await?;
 
@@ -385,158 +421,255 @@ pub async fn add_coco_server<R: Runtime>(
 
     trim_endpoint_last_forward_slash(&mut server);
 
+    // The JSON returned from `provider/_info` won't have this field, serde will set
+    // it to an empty string during deserialization, we need to set a valid value here.
     if server.id.is_empty() {
         server.id = pizza_common::utils::uuid::Uuid::new().to_string();
     }
 
+    // Use the default name, if it is not set.
     if server.name.is_empty() {
         server.name = "Coco Server".to_string();
     }
 
-    save_server(&server);
+    // Update the `available` field
+    if server.public {
+        // Serde already sets this to true, but just to make the code clear, do it again.
+        server.available = true;
+    } else {
+        let opt_token = get_server_token(&server.id).await;
+        assert!(
+            opt_token.is_none(),
+            "this Coco server is newly-added, we should have no token stored for it!"
+        );
+        // This is a non-public Coco server, and it is not logged in, so it is unavailable.
+        server.available = false;
+    }
+
+    save_server(&server).await;
     try_register_server_to_search_source(app_handle.clone(), &server).await;
 
     persist_servers(&app_handle)
         .await
         .map_err(|e| format!("Failed to persist Coco servers: {}", e))?;
 
-    dbg!(format!("Successfully registered server: {:?}", &endpoint));
+    log::debug!("Successfully registered server: {:?}", &endpoint);
     Ok(server)
 }
 
 #[tauri::command]
-pub async fn remove_coco_server<R: Runtime>(
-    app_handle: AppHandle<R>,
-    id: String,
-) -> Result<(), ()> {
+#[function_name::named]
+pub async fn remove_coco_server(app_handle: AppHandle, id: String) -> Result<(), ()> {
     let registry = app_handle.state::<SearchSourceRegistry>();
     registry.remove_source(id.as_str()).await;
 
-    remove_server_token(id.as_str());
-    remove_server_by_id(id);
+    let opt_server = remove_server_by_id(id.as_str()).await;
+    let Some(server) = opt_server else {
+        panic!(
+            "[{}()] invoked with a server [{}] that does not exist! Mismatched states between frontend and backend!",
+            function_name!(),
+            id
+        );
+    };
+    persist_servers(&app_handle)
+        .await
+        .expect("failed to save servers");
+
+    // Only non-public Coco servers require tokens
+    if !server.public {
+        // If is logged in, clear the token as well.
+        let deleted = remove_server_token(id.as_str()).await;
+        if deleted {
+            persist_servers_token(&app_handle)
+                .await
+                .expect("failed to save server tokens");
+        }
+    }
+
+    Ok(())
+}
+
+#[tauri::command]
+#[function_name::named]
+pub async fn enable_server(app_handle: AppHandle, id: String) -> Result<(), ()> {
+    let opt_server = get_server_by_id(id.as_str()).await;
+
+    let Some(mut server) = opt_server else {
+        panic!(
+            "[{}()] invoked with a server [{}] that does not exist! Mismatched states between frontend and backend!",
+            function_name!(),
+            id
+        );
+    };
+
+    server.enabled = true;
+    save_server(&server).await;
+
+    // Register the server to the search source
+    try_register_server_to_search_source(app_handle.clone(), &server).await;
 
     persist_servers(&app_handle)
         .await
         .expect("failed to save servers");
-    persist_servers_token(&app_handle).expect("failed to save server tokens");
     Ok(())
 }
 
 #[tauri::command]
-pub async fn enable_server<R: Runtime>(app_handle: AppHandle<R>, id: String) -> Result<(), ()> {
-    println!("enable_server: {}", id);
+#[function_name::named]
+pub async fn disable_server(app_handle: AppHandle, id: String) -> Result<(), ()> {
+    let opt_server = get_server_by_id(id.as_str()).await;
 
-    let server = get_server_by_id(id.as_str());
-    if let Some(mut server) = server {
-        server.enabled = true;
-        save_server(&server);
+    let Some(mut server) = opt_server else {
+        panic!(
+            "[{}()] invoked with a server [{}] that does not exist! Mismatched states between frontend and backend!",
+            function_name!(),
+            id
+        );
+    };
 
-        // Register the server to the search source
-        try_register_server_to_search_source(app_handle.clone(), &server).await;
+    server.enabled = false;
+
+    let registry = app_handle.state::<SearchSourceRegistry>();
+    registry.remove_source(id.as_str()).await;
+
+    save_server(&server).await;
+    persist_servers(&app_handle)
+        .await
+        .expect("failed to save servers");
 
-        persist_servers(&app_handle)
-            .await
-            .expect("failed to save servers");
-    }
     Ok(())
 }
 
-pub async fn try_register_server_to_search_source(
-    app_handle: AppHandle<impl Runtime>,
-    server: &Server,
-) {
+/// For non-public Coco servers, we add it to the search source as long as it is
+/// enabled.
+///
+/// For public Coco server, an extra token is required.
+pub async fn try_register_server_to_search_source(app_handle: AppHandle, server: &Server) {
     if server.enabled {
+        log::trace!(
+            "Server [name: {}, id: {}] is public: {} and available: {}",
+            &server.name,
+            &server.id,
+            &server.public,
+            &server.available
+        );
+
+        if !server.public {
+            let opt_token = get_server_token(&server.id).await;
+
+            if opt_token.is_none() {
+                log::debug!("Server {} is not public and no token was found", &server.id);
+                return;
+            }
+        }
+
         let registry = app_handle.state::<SearchSourceRegistry>();
-        let source = CocoSearchSource::new(server.clone(), Client::new());
+        let source = CocoSearchSource::new(server.clone());
         registry.register_source(source).await;
     }
 }
 
-pub async fn mark_server_as_offline(id: &str) {
-    // println!("server_is_offline: {}", id);
-    let server = get_server_by_id(id);
+#[function_name::named]
+#[allow(unused)]
+async fn mark_server_as_online(app_handle: AppHandle, id: &str) {
+    let server = get_server_by_id(id).await;
+    if let Some(mut server) = server {
+        server.available = true;
+        server.health = None;
+        save_server(&server).await;
+
+        try_register_server_to_search_source(app_handle.clone(), &server).await;
+    } else {
+        log::warn!(
+            "[{}()] invoked with a server [{}] that does not exist!",
+            function_name!(),
+            id
+        );
+    }
+}
+
+#[function_name::named]
+pub(crate) async fn mark_server_as_offline(app_handle: AppHandle, id: &str) {
+    let server = get_server_by_id(id).await;
     if let Some(mut server) = server {
         server.available = false;
         server.health = None;
-        save_server(&server);
-    }
-}
-
-#[tauri::command]
-pub async fn disable_server<R: Runtime>(app_handle: AppHandle<R>, id: String) -> Result<(), ()> {
-    println!("disable_server: {}", id);
-
-    let server = get_server_by_id(id.as_str());
-    if let Some(mut server) = server {
-        server.enabled = false;
+        save_server(&server).await;
 
         let registry = app_handle.state::<SearchSourceRegistry>();
-        registry.remove_source(id.as_str()).await;
-
-        save_server(&server);
-        persist_servers(&app_handle)
-            .await
-            .expect("failed to save servers");
+        registry.remove_source(id).await;
+    } else {
+        log::warn!(
+            "[{}()] invoked with a server [{}] that does not exist!",
+            function_name!(),
+            id
+        );
     }
-    Ok(())
 }
 
 #[tauri::command]
-pub async fn logout_coco_server<R: Runtime>(
-    app_handle: AppHandle<R>,
-    id: String,
-) -> Result<(), String> {
-    dbg!("Attempting to log out server by id:", &id);
-
-    // Check if server token exists
-    if let Some(_token) = get_server_token(id.as_str()).await? {
-        dbg!("Found server token for id:", &id);
-
-        // Remove the server token from cache
-        remove_server_token(id.as_str());
-
-        // Persist the updated tokens
-        if let Err(e) = persist_servers_token(&app_handle) {
-            dbg!("Failed to save tokens for id: {}. Error: {:?}", &id, &e);
-            return Err(format!("Failed to save tokens: {}", &e));
-        }
-    } else {
-        // Log the case where server token is not found
-        dbg!("No server token found for id: {}", &id);
-    }
+#[function_name::named]
+pub async fn logout_coco_server(app_handle: AppHandle, id: String) -> Result<(), String> {
+    log::debug!("Attempting to log out server by id: {}", &id);
 
     // Check if the server exists
-    if let Some(mut server) = get_server_by_id(id.as_str()) {
-        dbg!("Found server for id:", &id);
+    let Some(mut server) = get_server_by_id(id.as_str()).await else {
+        panic!(
+            "[{}()] invoked with a server [{}] that does not exist! Mismatched states between frontend and backend!",
+            function_name!(),
+            id
+        );
+    };
 
-        // Clear server profile
-        server.profile = None;
-
-        // Save the updated server data
-        save_server(&server);
-
-        // Persist the updated server data
-        if let Err(e) = persist_servers(&app_handle).await {
-            dbg!("Failed to save server for id: {}. Error: {:?}", &id, &e);
-            return Err(format!("Failed to save server: {}", &e));
-        }
-    } else {
-        // Log the case where server is not found
-        dbg!("No server found for id: {}", &id);
-        return Err(format!("No server found for id: {}", id));
+    // Clear server profile
+    server.profile = None;
+    // Logging out from a non-public Coco server makes it unavailable
+    if !server.public {
+        server.available = false;
+    }
+    // Save the updated server data
+    save_server(&server).await;
+    // Persist the updated server data
+    if let Err(e) = persist_servers(&app_handle).await {
+        log::debug!("Failed to save server for id: {}. Error: {:?}", &id, &e);
+        return Err(format!("Failed to save server: {}", &e));
     }
 
-    dbg!("Successfully logged out server with id:", &id);
+    let has_token = get_server_token(id.as_str()).await.is_some();
+    if server.public {
+        if has_token {
+            panic!("Public Coco server won't have token")
+        }
+    } else {
+        assert!(
+            has_token,
+            "This is a non-public Coco server, and it is logged in, we should have a token"
+        );
+        // Remove the server token from cache
+        remove_server_token(id.as_str()).await;
+
+        // Persist the updated tokens
+        if let Err(e) = persist_servers_token(&app_handle).await {
+            log::debug!("Failed to save tokens for id: {}. Error: {:?}", &id, &e);
+            return Err(format!("Failed to save tokens: {}", &e));
+        }
+    }
+
+    // Remove it from the search source if it becomes unavailable
+    if !server.available {
+        let registry = app_handle.state::<SearchSourceRegistry>();
+        registry.remove_source(id.as_str()).await;
+    }
+
+    log::debug!("Successfully logged out server with id: {}", &id);
     Ok(())
 }
 
-/// Removes the trailing slash from the server's endpoint if present.
+/// Helper function to remove the trailing slash from the server's endpoint if present.
 fn trim_endpoint_last_forward_slash(server: &mut Server) {
-    if server.endpoint.ends_with('/') {
-        server.endpoint.pop(); // Remove the last character
-        while server.endpoint.ends_with('/') {
-            server.endpoint.pop();
-        }
+    let endpoint = &mut server.endpoint;
+    while endpoint.ends_with('/') {
+        endpoint.pop();
     }
 }
 
@@ -545,41 +678,47 @@ fn provider_info_url(endpoint: &str) -> String {
     format!("{endpoint}/provider/_info")
 }
 
-#[test]
-fn test_trim_endpoint_last_forward_slash() {
-    let mut server = Server {
-        id: "test".to_string(),
-        builtin: false,
-        enabled: true,
-        name: "".to_string(),
-        endpoint: "https://example.com///".to_string(),
-        provider: Provider {
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_trim_endpoint_last_forward_slash() {
+        let mut server = Server {
+            id: "test".to_string(),
+            builtin: false,
+            enabled: true,
             name: "".to_string(),
-            icon: "".to_string(),
-            website: "".to_string(),
-            eula: "".to_string(),
-            privacy_policy: "".to_string(),
-            banner: "".to_string(),
-            description: "".to_string(),
-        },
-        version: Version {
-            number: "".to_string(),
-        },
-        minimal_client_version: None,
-        updated: "".to_string(),
-        public: false,
-        available: false,
-        health: None,
-        profile: None,
-        auth_provider: AuthProvider {
-            sso: Sso {
-                url: "".to_string(),
+            endpoint: "https://example.com///".to_string(),
+            provider: Provider {
+                name: "".to_string(),
+                icon: "".to_string(),
+                website: "".to_string(),
+                eula: "".to_string(),
+                privacy_policy: "".to_string(),
+                banner: "".to_string(),
+                description: "".to_string(),
             },
-        },
-        priority: 0,
-    };
+            version: Version {
+                number: "".to_string(),
+            },
+            minimal_client_version: None,
+            updated: "".to_string(),
+            public: false,
+            available: false,
+            health: None,
+            profile: None,
+            auth_provider: AuthProvider {
+                sso: Sso {
+                    url: "".to_string(),
+                },
+            },
+            priority: 0,
+            stats: None,
+        };
 
-    trim_endpoint_last_forward_slash(&mut server);
+        trim_endpoint_last_forward_slash(&mut server);
 
-    assert_eq!(server.endpoint, "https://example.com");
+        assert_eq!(server.endpoint, "https://example.com");
+    }
 }

src-tauri/src/server/synthesize.rs

@@ -0,0 +1,57 @@
+use crate::server::http_client::HttpClient;
+use futures_util::StreamExt;
+use http::Method;
+use serde_json::json;
+use tauri::{AppHandle, Emitter, command};
+
+#[command]
+pub async fn synthesize(
+    app_handle: AppHandle,
+    client_id: String,
+    server_id: String,
+    voice: String,
+    content: String,
+) -> Result<(), String> {
+    let body = json!({
+        "voice": voice,
+        "content": content,
+    })
+    .to_string();
+
+    let response = HttpClient::send_request(
+        server_id.as_str(),
+        Method::POST,
+        "/services/audio/synthesize",
+        None,
+        None,
+        Some(reqwest::Body::from(body.to_string())),
+    )
+    .await?;
+
+    log::info!("Synthesize response status: {}", response.status());
+
+    if response.status() == 429 {
+        return Ok(());
+    }
+
+    if !response.status().is_success() {
+        return Err(format!("Request Failed: {}", response.status()));
+    }
+
+    let mut stream = response.bytes_stream();
+    while let Some(chunk) = stream.next().await {
+        match chunk {
+            Ok(bytes) => {
+                if let Err(err) = app_handle.emit(&client_id, bytes.to_vec()) {
+                    log::error!("Emit error: {:?}", err);
+                }
+            }
+            Err(e) => {
+                log::error!("Stream error: {:?}", e);
+                break;
+            }
+        }
+    }
+
+    Ok(())
+}

src-tauri/src/server/transcription.rs

@@ -1,43 +1,96 @@
 use crate::common::http::get_response_body_text;
 use crate::server::http_client::HttpClient;
 use serde::{Deserialize, Serialize};
-use serde_json::Value as JsonValue;
-use std::collections::HashMap;
+use serde_json::{Value, from_str};
 use tauri::command;
 
 #[derive(Debug, Serialize, Deserialize)]
 pub struct TranscriptionResponse {
-    pub text: String,
+    task_id: String,
+    results: Vec<Value>,
 }
 
 #[command]
 pub async fn transcription(
     server_id: String,
-    audio_type: String,
     audio_content: String,
 ) -> Result<TranscriptionResponse, String> {
-    let mut query_params = HashMap::new();
-    query_params.insert("type".to_string(), JsonValue::String(audio_type));
-    query_params.insert("content".to_string(), JsonValue::String(audio_content));
-
-    // Send the HTTP POST request
-    let response = HttpClient::post(
+    // Send request to initiate transcription task
+    let init_response = HttpClient::post(
         &server_id,
         "/services/audio/transcription",
-        Some(query_params),
         None,
+        Some(audio_content.into()),
     )
-        .await
-        .map_err(|e| format!("Error sending transcription request: {}", e))?;
+    .await
+    .map_err(|e| format!("Failed to initiate transcription: {}", e))?;
 
-    // Use get_response_body_text to extract the response body as text
-    let response_body = get_response_body_text(response)
+    // Extract response body as text
+    let init_response_text = get_response_body_text(init_response)
         .await
-        .map_err(|e| format!("Failed to read response body: {}", e))?;
+        .map_err(|e| format!("Failed to read initial response body: {}", e))?;
 
-    // Deserialize the response body into TranscriptionResponse
-    let transcription_response: TranscriptionResponse = serde_json::from_str(&response_body)
-        .map_err(|e| format!("Failed to parse transcription response: {}", e))?;
+    // Parse response JSON to extract task ID
+    let init_response_json: Value = from_str(&init_response_text).map_err(|e| {
+        format!(
+            "Failed to parse initial response JSON: {}. Raw response: {}",
+            e, init_response_text
+        )
+    })?;
+
+    let transcription_task_id = init_response_json["task_id"]
+        .as_str()
+        .ok_or_else(|| {
+            format!(
+                "Missing or invalid task_id in initial response: {}",
+                init_response_text
+            )
+        })?
+        .to_string();
+
+    // Set up polling with timeout
+    let polling_start = std::time::Instant::now();
+    const POLLING_TIMEOUT: std::time::Duration = std::time::Duration::from_secs(30);
+    const POLLING_INTERVAL: std::time::Duration = std::time::Duration::from_millis(200);
+
+    let mut transcription_response: TranscriptionResponse;
+
+    loop {
+        // Poll for transcription results
+        let poll_response = HttpClient::get(
+            &server_id,
+            &format!("/services/audio/task/{}", transcription_task_id),
+            None,
+        )
+        .await
+        .map_err(|e| format!("Failed to poll transcription task: {}", e))?;
+
+        // Extract poll response body
+        let poll_response_text = get_response_body_text(poll_response)
+            .await
+            .map_err(|e| format!("Failed to read poll response body: {}", e))?;
+
+        // Parse poll response JSON
+        transcription_response = from_str(&poll_response_text).map_err(|e| {
+            format!(
+                "Failed to parse poll response JSON: {}. Raw response: {}",
+                e, poll_response_text
+            )
+        })?;
+
+        // Check if transcription results are available
+        if !transcription_response.results.is_empty() {
+            break;
+        }
+
+        // Check for timeout
+        if polling_start.elapsed() >= POLLING_TIMEOUT {
+            return Err("Transcription task timed out after 30 seconds".to_string());
+        }
+
+        // Wait before next poll
+        tokio::time::sleep(POLLING_INTERVAL).await;
+    }
 
     Ok(transcription_response)
 }

src-tauri/src/server/websocket.rs

@@ -1,132 +0,0 @@
-use crate::server::servers::{get_server_by_id, get_server_token};
-use futures::StreamExt;
-use std::collections::HashMap;
-use std::sync::Arc;
-use tauri::{AppHandle, Emitter};
-use tokio::net::TcpStream;
-use tokio::sync::{mpsc, Mutex};
-use tokio_tungstenite::tungstenite::handshake::client::generate_key;
-use tokio_tungstenite::tungstenite::Message;
-use tokio_tungstenite::WebSocketStream;
-use tokio_tungstenite::{connect_async, MaybeTlsStream};
-
-#[derive(Default)]
-pub struct WebSocketManager {
-    connections: Arc<Mutex<HashMap<String, Arc<WebSocketInstance>>>>,
-}
-
-struct WebSocketInstance {
-    ws_connection: Mutex<WebSocketStream<MaybeTlsStream<TcpStream>>>, // No need to lock the entire map
-    cancel_tx: mpsc::Sender<()>,
-}
-
-fn convert_to_websocket(endpoint: &str) -> Result<String, String> {
-    let url = url::Url::parse(endpoint).map_err(|e| format!("Invalid URL: {}", e))?;
-    let ws_protocol = if url.scheme() == "https" { "wss://" } else { "ws://" };
-    let host = url.host_str().ok_or("No host found in URL")?;
-    let port = url.port_or_known_default().unwrap_or(if url.scheme() == "https" { 443 } else { 80 });
-
-    let ws_endpoint = if port == 80 || port == 443 {
-        format!("{}{}{}", ws_protocol, host, "/ws")
-    } else {
-        format!("{}{}:{}/ws", ws_protocol, host, port)
-    };
-    Ok(ws_endpoint)
-}
-
-#[tauri::command]
-pub async fn connect_to_server(
-    id: String,
-    client_id: String,
-    state: tauri::State<'_, WebSocketManager>,
-    app_handle: AppHandle,
-) -> Result<(), String> {
-    let connections_clone = state.connections.clone();
-
-    // Disconnect old connection first
-    disconnect(client_id.clone(), state.clone()).await.ok();
-
-    let server = get_server_by_id(&id).ok_or(format!("Server with ID {} not found", id))?;
-    let endpoint = convert_to_websocket(&server.endpoint)?;
-    let token = get_server_token(&id).await?.map(|t| t.access_token.clone());
-
-    let mut request =
-        tokio_tungstenite::tungstenite::client::IntoClientRequest::into_client_request(&endpoint)
-            .map_err(|e| format!("Failed to create WebSocket request: {}", e))?;
-
-    request.headers_mut().insert("Connection", "Upgrade".parse().unwrap());
-    request.headers_mut().insert("Upgrade", "websocket".parse().unwrap());
-    request.headers_mut().insert("Sec-WebSocket-Version", "13".parse().unwrap());
-    request.headers_mut().insert("Sec-WebSocket-Key", generate_key().parse().unwrap());
-
-    if let Some(token) = token {
-        request.headers_mut().insert("X-API-TOKEN", token.parse().unwrap());
-    }
-
-    let (ws_stream, _) = connect_async(request).await.map_err(|e| format!("WebSocket error: {:?}", e))?;
-    let (cancel_tx, mut cancel_rx) = mpsc::channel(1);
-
-    let instance = Arc::new(WebSocketInstance {
-        ws_connection: Mutex::new(ws_stream),
-        cancel_tx,
-    });
-
-    // Insert connection into the map (lock is held briefly)
-    {
-        let mut connections = connections_clone.lock().await;
-        connections.insert(client_id.clone(), instance.clone());
-    }
-
-    // Spawn WebSocket handler in a separate task
-    let app_handle_clone = app_handle.clone();
-    let client_id_clone = client_id.clone();
-    tokio::spawn(async move {
-        let ws = &mut *instance.ws_connection.lock().await;
-
-        loop {
-            tokio::select! {
-                msg = ws.next() => {
-                    match msg {
-                        Some(Ok(Message::Text(text))) => {
-                            let _ = app_handle_clone.emit(&format!("ws-message-{}", client_id_clone), text);
-                        },
-                        Some(Err(_)) | None => {
-                            let _ = app_handle_clone.emit(&format!("ws-error-{}", client_id_clone), id.clone());
-                            break;
-                        }
-                        _ => {}
-                    }
-                }
-                _ = cancel_rx.recv() => {
-                    let _ = app_handle_clone.emit(&format!("ws-error-{}", client_id_clone), id.clone());
-                    break;
-                }
-            }
-        }
-
-        // Remove connection after it closes
-        let mut connections = connections_clone.lock().await;
-        connections.remove(&client_id_clone);
-    });
-
-    Ok(())
-}
-
-
-#[tauri::command]
-pub async fn disconnect(client_id: String, state: tauri::State<'_, WebSocketManager>) -> Result<(), String> {
-    let instance = {
-        let mut connections = state.connections.lock().await;
-        connections.remove(&client_id)
-    };
-
-    if let Some(instance) = instance {
-        let _ = instance.cancel_tx.send(()).await;
-
-        // Close WebSocket (lock only the connection, not the whole map)
-        let mut ws = instance.ws_connection.lock().await;
-        let _ = ws.close(None).await;
-    }
-
-    Ok(())
-}

src-tauri/src/settings.rs

@@ -0,0 +1,72 @@
+use crate::COCO_TAURI_STORE;
+use serde_json::Value as Json;
+use tauri::AppHandle;
+use tauri_plugin_store::StoreExt;
+
+const SETTINGS_ALLOW_SELF_SIGNATURE: &str = "settings_allow_self_signature";
+
+#[tauri::command]
+pub async fn set_allow_self_signature(tauri_app_handle: AppHandle, value: bool) {
+    use crate::server::http_client;
+
+    let store = tauri_app_handle
+        .store(COCO_TAURI_STORE)
+        .unwrap_or_else(|e| {
+            panic!(
+                "store [{}] not found/loaded, error [{}]",
+                COCO_TAURI_STORE, e
+            )
+        });
+
+    let old_value = match store
+        .get(SETTINGS_ALLOW_SELF_SIGNATURE)
+        .expect("should be initialized upon first get call")
+    {
+        Json::Bool(b) => b,
+        _ => unreachable!(
+            "{} should be stored in a boolean",
+            SETTINGS_ALLOW_SELF_SIGNATURE
+        ),
+    };
+
+    if old_value == value {
+        return;
+    }
+
+    store.set(SETTINGS_ALLOW_SELF_SIGNATURE, value);
+
+    let mut guard = http_client::HTTP_CLIENT.lock().await;
+    *guard = http_client::new_reqwest_http_client(value)
+}
+
+/// Synchronous version of `async get_allow_self_signature()`.
+pub fn _get_allow_self_signature(tauri_app_handle: AppHandle) -> bool {
+    let store = tauri_app_handle
+        .store(COCO_TAURI_STORE)
+        .unwrap_or_else(|e| {
+            panic!(
+                "store [{}] not found/loaded, error [{}]",
+                COCO_TAURI_STORE, e
+            )
+        });
+    if !store.has(SETTINGS_ALLOW_SELF_SIGNATURE) {
+        // default to false
+        store.set(SETTINGS_ALLOW_SELF_SIGNATURE, false);
+    }
+
+    match store
+        .get(SETTINGS_ALLOW_SELF_SIGNATURE)
+        .expect("should be Some")
+    {
+        Json::Bool(b) => b,
+        _ => unreachable!(
+            "{} should be stored in a boolean",
+            SETTINGS_ALLOW_SELF_SIGNATURE
+        ),
+    }
+}
+
+#[tauri::command]
+pub async fn get_allow_self_signature(tauri_app_handle: AppHandle) -> bool {
+    _get_allow_self_signature(tauri_app_handle)
+}

src-tauri/src/setup/linux.rs

@@ -1,3 +1,9 @@
-use tauri::{App, WebviewWindow};
+use tauri::{AppHandle, WebviewWindow};
 
-pub fn platform(_app: &mut App, _main_window: WebviewWindow, _settings_window: WebviewWindow) {}
+pub fn platform(
+    _tauri_app_handle: &AppHandle,
+    _main_window: WebviewWindow,
+    _settings_window: WebviewWindow,
+    _check_window: WebviewWindow,
+) {
+}

src-tauri/src/setup/mac.rs

@@ -1,32 +1,39 @@
-//credits to: https://github.com/ayangweb/ayangweb-EcoPaste/blob/169323dbe6365ffe4abb64d867439ed2ea84c6d1/src-tauri/src/core/setup/mac.rs
-use tauri::{ActivationPolicy, App, Emitter, EventTarget, WebviewWindow};
-use tauri_nspanel::{cocoa::appkit::NSWindowCollectionBehavior, panel_delegate, WebviewWindowExt};
+//! credits to: https://github.com/ayangweb/ayangweb-EcoPaste/blob/169323dbe6365ffe4abb64d867439ed2ea84c6d1/src-tauri/src/core/setup/mac.rs
 
 use crate::common::MAIN_WINDOW_LABEL;
-
-#[allow(non_upper_case_globals)]
-const NSWindowStyleMaskNonActivatingPanel: i32 = 1 << 7;
+use objc2_app_kit::NSNonactivatingPanelMask;
+use tauri::{AppHandle, Emitter, EventTarget, WebviewWindow};
+use tauri_nspanel::{WebviewWindowExt, cocoa::appkit::NSWindowCollectionBehavior, panel_delegate};
 
 const WINDOW_FOCUS_EVENT: &str = "tauri://focus";
 const WINDOW_BLUR_EVENT: &str = "tauri://blur";
 const WINDOW_MOVED_EVENT: &str = "tauri://move";
 const WINDOW_RESIZED_EVENT: &str = "tauri://resize";
 
-pub fn platform(app: &mut App, main_window: WebviewWindow, _settings_window: WebviewWindow) {
-    app.set_activation_policy(ActivationPolicy::Accessory);
-
+pub fn platform(
+    _tauri_app_handle: &AppHandle,
+    main_window: WebviewWindow,
+    _settings_window: WebviewWindow,
+    _check_window: WebviewWindow,
+) {
     // Convert ns_window to ns_panel
     let panel = main_window.to_panel().unwrap();
 
-    // Make the window above the dock
-    panel.set_level(20);
-
     // Do not steal focus from other windows
-    panel.set_style_mask(NSWindowStyleMaskNonActivatingPanel);
+    //
+    // Cast is safe
+    panel.set_style_mask(NSNonactivatingPanelMask.0 as i32);
+    // Set its level to NSFloatingWindowLevel to ensure it appears in front of
+    // all normal-level windows
+    //
+    // NOTE: some Chinese input methods use a level between NSDockWindowLevel (20)
+    // and NSMainMenuWindowLevel (24), setting our level above NSDockWindowLevel
+    // would block their window
+    panel.set_floating_panel(true);
 
-    // Share the window across all desktop spaces and full screen
+    // Open the window in the active workspace and full screen
     panel.set_collection_behaviour(
-        NSWindowCollectionBehavior::NSWindowCollectionBehaviorCanJoinAllSpaces
+        NSWindowCollectionBehavior::NSWindowCollectionBehaviorMoveToActiveSpace
             | NSWindowCollectionBehavior::NSWindowCollectionBehaviorStationary
             | NSWindowCollectionBehavior::NSWindowCollectionBehaviorFullScreenAuxiliary,
     );