release.yml

name: Release

on:
  push:
    tags:
      - "v*.*.*" # Triggers on version tags like v1.0.0, v0.1.0, etc.

permissions:
  contents: write
  packages: write
  id-token: write
  attestations: write

jobs:
  release:
    name: Build and Release
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Setup Go
        uses: actions/setup-go@v5
        with:
          go-version-file: go.mod

      - name: Cache Go modules
        uses: actions/cache@v4
        with:
          path: |
            ~/.cache/go-build
            ~/go/pkg/mod
          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
          restore-keys: |
            ${{ runner.os }}-go-

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Log in to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GHCR_TOKEN }}

      - name: Extract version from tag
        id: version
        run: |
          VERSION=${GITHUB_REF#refs/tags/}
          echo "version=$VERSION" >> $GITHUB_OUTPUT
          echo "Releasing version: $VERSION"

      - name: Build and push multi-platform container images
        run: |
          # Convert to lowercase (GHCR requirement)
          OWNER_LC=$(echo "${{ github.repository_owner }}" | tr '[:upper:]' '[:lower:]')
          export IMG=ghcr.io/${OWNER_LC}/folder-controller:${{ steps.version.outputs.version }}
          export IMG_LATEST=ghcr.io/${OWNER_LC}/folder-controller:latest

          # Build and push with version tag
          make docker-buildx IMG=$IMG

          # Also tag as latest
          docker buildx imagetools create $IMG --tag $IMG_LATEST

      - name: Generate installable manifest
        run: |
          # Convert to lowercase (GHCR requirement)
          OWNER_LC=$(echo "${{ github.repository_owner }}" | tr '[:upper:]' '[:lower:]')
          export IMG=ghcr.io/${OWNER_LC}/folder-controller:${{ steps.version.outputs.version }}
          make build-installer

      - name: Verify manifest was created
        run: |
          if [ ! -f dist/install.yaml ]; then
            echo "Error: dist/install.yaml was not created"
            exit 1
          fi
          echo "Manifest size: $(wc -c < dist/install.yaml) bytes"
          echo "Manifest preview (first 50 lines):"
          head -n 50 dist/install.yaml

      - name: Create Release Notes
        id: release_notes
        run: |
          # Convert to lowercase (GHCR requirement)
          OWNER_LC=$(echo "${{ github.repository_owner }}" | tr '[:upper:]' '[:lower:]')

          cat > release_notes.md << EOF
          ## Folder Controller ${{ steps.version.outputs.version }}

          ### Installation

          Install the Folder controller using the provided manifest:

          \`\`\`bash
          kubectl apply -f https://github.com/${{ github.repository }}/releases/download/${{ steps.version.outputs.version }}/install.yaml
          \`\`\`

          ### Container Images

          Multi-platform container images are available at:
          - \`ghcr.io/${OWNER_LC}/folder-controller:${{ steps.version.outputs.version }}\`
          - \`ghcr.io/${OWNER_LC}/folder-controller:latest\`

          Supported architectures:
          - linux/amd64
          - linux/arm64
          - linux/s390x
          - linux/ppc64le

          ### What's Changed

          <!-- Add your changelog here or auto-generate it -->

          **Full Changelog**: https://github.com/${{ github.repository }}/compare/v0.0.0...${{ steps.version.outputs.version }}
          EOF
          cat release_notes.md

      - name: Create GitHub Release
        uses: softprops/action-gh-release@v2
        with:
          files: |
            dist/install.yaml
          body_path: release_notes.md
          draft: false
          prerelease: false
          generate_release_notes: true
        env:
          GHCR_TOKEN: ${{ secrets.GHCR_TOKEN }}

      - name: Summary
        run: |
          # Convert to lowercase (GHCR requirement)
          OWNER_LC=$(echo "${{ github.repository_owner }}" | tr '[:upper:]' '[:lower:]')

          echo "## Release Summary" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "✅ **Version**: ${{ steps.version.outputs.version }}" >> $GITHUB_STEP_SUMMARY
          echo "✅ **Container Image**: ghcr.io/${OWNER_LC}/folder-controller:${{ steps.version.outputs.version }}" >> $GITHUB_STEP_SUMMARY
          echo "✅ **Installable Manifest**: Attached to release" >> $GITHUB_STEP_SUMMARY
          echo "" >> $GITHUB_STEP_SUMMARY
          echo "### Installation Command" >> $GITHUB_STEP_SUMMARY
          echo '```bash' >> $GITHUB_STEP_SUMMARY
          echo "kubectl apply -f https://github.com/${{ github.repository }}/releases/download/${{ steps.version.outputs.version }}/install.yaml" >> $GITHUB_STEP_SUMMARY
          echo '```' >> $GITHUB_STEP_SUMMARY