shelfmark/.github/workflows/build-and-publish-docker-image.yml

name: Create and publish Docker images
on:
  push:
    branches:
      - 'main'
    tags:
      - 'v*'
  workflow_dispatch:
env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository_owner }}/shelfmark
jobs:
  build-and-push-images:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      attestations: write
      id-token: write
    strategy:
      matrix:
        include:
          - target: shelfmark
          - target: shelfmark-lite
            image_name_suffix: "-lite"
    steps:
      - name: Get current date
        id: date
        run: echo "date=$(date +'%Y-%m-%d')" >> $GITHUB_OUTPUT
      
      - name: Checkout repository
        uses: actions/checkout@v4
      
      - name: Log in to the Container registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      
      - name: Extract metadata for ${{ matrix.target }} image
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}${{ matrix.image_name_suffix }}
          tags: |
            type=raw,value=dev,enable={{is_default_branch}}
            type=raw,value=latest,enable=${{ startsWith(github.ref, 'refs/tags/') }}
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=sha
            type=ref,event=tag
      
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
      
      - name: Build and push ${{ matrix.target }} Docker image
        id: push
        uses: docker/build-push-action@v5
        with:
          platforms: linux/amd64,linux/arm64
          context: .
          target: ${{ matrix.target }}
          push: ${{ github.event_name != 'pull_request' }}
          build-args: |
            BUILD_VERSION=${{ steps.date.outputs.date }}-${{ github.sha }}
            RELEASE_VERSION=${{ github.ref_name }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
      
      - name: Generate artifact attestation for ${{ matrix.target }} image
        if: github.event_name != 'pull_request'
        uses: actions/attest-build-provenance@v2
        with:
          subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}${{ matrix.image_name_suffix }}
          subject-digest: ${{ steps.push.outputs.digest }}
          push-to-registry: true

  # Create aliases for backwards compatibility
  create-aliases:
    needs: build-and-push-images
    runs-on: ubuntu-latest
    if: github.event_name != 'pull_request'
    permissions:
      contents: read
      packages: write
    env:
      # Legacy name for backwards compatibility (hardcoded so it works after rename)
      LEGACY_NAME: calibre-web-automated-book-downloader
    steps:
      - name: Log in to registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

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

      - name: Create legacy aliases
        run: |
          # Current image names (follows repo name)
          STANDARD="${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}"
          LITE="${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}-lite"

          # Legacy image names (hardcoded for backwards compatibility)
          LEGACY="${{ env.REGISTRY }}/${{ github.repository_owner }}/${{ env.LEGACY_NAME }}"
          LEGACY_TOR="${LEGACY}-tor"
          LEGACY_EXTBP="${LEGACY}-extbp"

          SHA_SHORT=$(echo "${{ github.sha }}" | cut -c1-7)

          # Helper function to create alias with all standard tags
          create_alias() {
            local SOURCE=$1
            local ALIAS=$2

            # Always create SHA tag
            docker buildx imagetools create -t "${ALIAS}:sha-${SHA_SHORT}" "${SOURCE}:sha-${SHA_SHORT}"

            if [[ "${{ github.ref }}" == refs/tags/v* ]]; then
              VERSION="${{ github.ref_name }}"
              VERSION_NUM="${VERSION#v}"
              MINOR="${VERSION_NUM%.*}"

              docker buildx imagetools create -t "${ALIAS}:latest" "${SOURCE}:latest"
              docker buildx imagetools create -t "${ALIAS}:${VERSION_NUM}" "${SOURCE}:${VERSION_NUM}"
              docker buildx imagetools create -t "${ALIAS}:${MINOR}" "${SOURCE}:${MINOR}"
              docker buildx imagetools create -t "${ALIAS}:${VERSION}" "${SOURCE}:${VERSION}"
            else
              docker buildx imagetools create -t "${ALIAS}:dev" "${SOURCE}:dev"
            fi
          }

          # Create legacy aliases pointing to current images
          # calibre-web-automated-book-downloader → standard image
          create_alias "${STANDARD}" "${LEGACY}"

          # calibre-web-automated-book-downloader-tor → standard image
          create_alias "${STANDARD}" "${LEGACY_TOR}"

          # calibre-web-automated-book-downloader-extbp → lite image
          create_alias "${LITE}" "${LEGACY_EXTBP}"