name: Build and Release on Tag

on:
  push:
    branches:
      - main

jobs:
  build-and-publish:
    runs-on: ubuntu-latest

    steps:
      # Checkout repository
      - name: Checkout repository
        uses: actions/checkout@v3

      - name: Extract Version
        id: extract_version
        run: |
          version=$(python3 -c "import version; print(version.__version__)")
          echo "VERSION=$version" >> $GITHUB_ENV

      # Set up Docker
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v2

      # Log in to GHCR
      - name: Log in to GHCR
        uses: docker/login-action@v2
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      # Build and push Docker image to GHCR with version tag
      - name: Build and Push Docker Image
        uses: docker/build-push-action@v4
        with:
          context: .
          push: true
          tags: |
            ghcr.io/${{ github.repository }}:${{ env.VERSION }}
            ghcr.io/${{ github.repository }}:latest

      # Read changelog for the current version
      - name: Read Changelog
        id: changelog
        run: |
          if [ -f changelogs/${{ env.VERSION }}.md ]; then
            changelog_content=$(cat changelogs/${{ env.VERSION }}.md)
            echo "CHANGELOG_CONTENT<<EOF" >> $GITHUB_ENV
            echo "$changelog_content" >> $GITHUB_ENV
            echo "EOF" >> $GITHUB_ENV
          else
            echo "CHANGELOG_CONTENT=No changelog available for this release." >> $GITHUB_ENV
          fi

      # Generate auto-generated release notes
      - name: Generate Auto Release Notes
        id: release_notes
        run: |
          auto_notes=$(gh release create ${{ env.VERSION }} --generate-notes --prerelease --json body --jq .body)
          echo "AUTO_RELEASE_NOTES<<EOF" >> $GITHUB_ENV
          echo "$auto_notes" >> $GITHUB_ENV
          echo "EOF" >> $GITHUB_ENV

      # Create a release on GitHub
      - name: Create GitHub Release
        uses: softprops/action-gh-release@v2
        with:
          tag_name: ${{ env.VERSION }}
          name: Release ${{ env.VERSION }}
          body: |
            ${{ env.CHANGELOG_CONTENT }}

            ## Auto-Generated Release Notes
            ${{ env.AUTO_RELEASE_NOTES }}
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
