wrkflw/.github/workflows/release.yml

name: Release

on:
  push:
    tags:
      - "v*"
  workflow_dispatch:
    inputs:
      tag:
        description: "Tag to release (e.g., v1.0.0)"
        required: true

permissions:
  contents: write

env:
  CARGO_TERM_COLOR: always
  RELEASE_TAG: ${{ inputs.tag || github.ref_name }}

jobs:
  changelog:
    name: Generate Changelog
    runs-on: ubuntu-latest
    outputs:
      changelog: ${{ steps.changelog.outputs.changelog }}
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - name: Validate tag format
        run: |
          if [[ ! "${RELEASE_TAG}" =~ ^v[0-9]+\.[0-9]+\.[0-9]+(-[a-zA-Z0-9.]+)?$ ]]; then
            echo "::error::Tag '${RELEASE_TAG}' does not match expected format vX.Y.Z"
            exit 1
          fi
      - name: Validate tag exists
        run: |
          if ! git tag -l "${RELEASE_TAG}" | grep -q .; then
            echo "::error::Tag ${RELEASE_TAG} does not exist as a git tag"
            exit 1
          fi
      - name: Generate changelog
        id: changelog
        run: |
          # Get the previous tag
          all_tags=$(git tag --sort=-v:refname | grep "^v")
          if ! echo "$all_tags" | grep -F -x -q "${RELEASE_TAG}"; then
            echo "::warning::Tag ${RELEASE_TAG} not found in tag list; generating changelog from all commits"
          fi
          prev_tag=$(echo "$all_tags" | grep -F -x -A1 "${RELEASE_TAG}" | tail -1)
          [ "$prev_tag" = "${RELEASE_TAG}" ] && prev_tag=""  # No previous tag found
          if [ -z "$prev_tag" ]; then
            # First release: use all commits
            changelog=$(git log --pretty=format:"- %s (%h)" --no-merges --max-count=100)
          else
            changelog=$(git log "${prev_tag}..${RELEASE_TAG}" --pretty=format:"- %s (%h)" --no-merges)
          fi
          # Escape for GitHub Actions output
          {
            echo "changelog<<CHANGELOG_EOF"
            echo "$changelog"
            echo "CHANGELOG_EOF"
          } >> "$GITHUB_OUTPUT"

  build:
    name: Build (${{ matrix.target }})
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        include:
          - target: x86_64-unknown-linux-gnu
            os: ubuntu-latest
          - target: x86_64-unknown-linux-musl
            os: ubuntu-latest
          - target: aarch64-unknown-linux-gnu
            os: ubuntu-latest
          - target: x86_64-apple-darwin
            os: macos-latest
          - target: aarch64-apple-darwin
            os: macos-latest
          - target: x86_64-pc-windows-msvc
            os: windows-latest
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@stable
        with:
          targets: ${{ matrix.target }}
      - uses: Swatinem/rust-cache@v2

      - name: Install cross-compilation tools
        if: matrix.target == 'aarch64-unknown-linux-gnu'
        run: |
          sudo apt-get update
          sudo apt-get install -y gcc-aarch64-linux-gnu

      - name: Install musl tools
        if: matrix.target == 'x86_64-unknown-linux-musl'
        run: |
          sudo apt-get update
          sudo apt-get install -y musl-tools

      - name: Configure linker for aarch64-linux-gnu
        if: matrix.target == 'aarch64-unknown-linux-gnu'
        run: |
          mkdir -p .cargo
          echo '[target.aarch64-unknown-linux-gnu]' > .cargo/config.toml
          echo 'linker = "aarch64-linux-gnu-gcc"' >> .cargo/config.toml

      - name: Build
        run: cargo build --release --locked --target ${{ matrix.target }}

      - name: Package (Unix)
        if: runner.os != 'Windows'
        run: tar czf wrkflw-${{ matrix.target }}.tar.gz -C target/${{ matrix.target }}/release wrkflw

      - name: Package (Windows)
        if: runner.os == 'Windows'
        shell: pwsh
        run: |
          Compress-Archive -Path "target/${{ matrix.target }}/release/wrkflw.exe" -DestinationPath "wrkflw-${{ matrix.target }}.zip"

      - name: Upload artifact
        uses: actions/upload-artifact@v4
        with:
          name: wrkflw-${{ matrix.target }}
          path: wrkflw-${{ matrix.target }}.*

  publish:
    name: Publish to crates.io
    runs-on: ubuntu-latest
    needs: [build, changelog]
    # Only publish on tag push — manual dispatch uses a branch ref, intentionally excluded
    # because publishing to crates.io is irreversible
    if: startsWith(github.ref, 'refs/tags/v')
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@stable
      - uses: Swatinem/rust-cache@v2
      - name: Cache cargo-workspaces
        id: cache-cargo-ws
        uses: actions/cache@v4
        with:
          path: ~/.cargo/bin/cargo-workspaces
          key: cargo-workspaces-0.4.2
      - name: Install cargo-workspaces
        if: steps.cache-cargo-ws.outputs.cache-hit != 'true'
        run: cargo install cargo-workspaces@0.4.2
      - name: Publish all crates
        run: cargo workspaces publish --from-git --yes
        env:
          CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}

  release:
    name: Create GitHub Release
    runs-on: ubuntu-latest
    needs: [build, changelog]
    steps:
      - uses: actions/checkout@v4

      - name: Download all artifacts
        uses: actions/download-artifact@v4
        with:
          path: artifacts
          merge-multiple: true

      - name: Create release
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ env.RELEASE_TAG }}
          name: wrkflw ${{ env.RELEASE_TAG }}
          body: |
            ## What's Changed
            ${{ needs.changelog.outputs.changelog }}
          files: artifacts/*
          generate_release_notes: false