name: Notesnook Android Preview Publish

# TRUSTED stage. Runs via `workflow_run` after the build workflow finishes, so
# it has the base repo's secrets and a write-scoped token. It downloads the APK
# the build produced and distributes it + posts the PR comment. It never checks
# out or executes fork code.

on:
  workflow_run:
    workflows: ["Notesnook Android Preview Build"]
    types: [completed]

jobs:
  publish:
    if: github.event.workflow_run.conclusion == 'success'
    runs-on: ubuntu-latest
    timeout-minutes: 20

    steps:
      - name: Download build artifact
        uses: actions/download-artifact@v4
        with:
          name: android-preview-build
          path: ${{ runner.temp }}/artifact
          run-id: ${{ github.event.workflow_run.id }}
          github-token: ${{ secrets.GITHUB_TOKEN }}

      - name: Load PR metadata
        run: cat "$RUNNER_TEMP/artifact/pr-meta.env" >> "$GITHUB_ENV"

      - name: Publish to Firebase
        id: firebase-output
        uses: wzieba/Firebase-Distribution-Github-Action@v1
        with:
          appId: ${{ secrets.FIREBASE_APP_ID }}
          serviceCredentialsFileContent: ${{ secrets.QA_SERVICE_ACCOUNT }}
          groups: testers
          file: ${{ runner.temp }}/artifact/app-preview.apk
          releaseNotes: Preview for https://github.com/${{ github.repository }}/pull/${{ env.PR_NUMBER }}

      - name: Post or update PR comment
        uses: actions/github-script@v7
        env:
          preview_url: ${{ steps.firebase-output.outputs.TESTING_URI }}
        with:
          script: |
            const marker = '<!-- android-preview-comment -->';
            const prNumber = Number(process.env.PR_NUMBER);
            if (!prNumber) return;
            const previewUrl = process.env.preview_url || '';
            const body = `${marker}\n**Android App Preview**\n\n${previewUrl || 'Preview URL unavailable — check workflow logs.'}\n\nCommit: ${process.env.HEAD_SHA}\n`;
            const { data: comments } = await github.rest.issues.listComments({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: prNumber,
            });
            const existing = comments.find(c => c.body && c.body.includes(marker));
            if (existing) {
              await github.rest.issues.updateComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                comment_id: existing.id,
                body,
              });
            } else {
              await github.rest.issues.createComment({
                owner: context.repo.owner,
                repo: context.repo.repo,
                issue_number: prNumber,
                body,
              });
            }