name: Build and Push MetadataRelay Docker Image

on:
  push:
    branches:
      - master
    paths:
      - 'metadata_relay/**'
      - '.github/workflows/python-lint_metadata_relay.yaml'
  pull_request:
    paths:
      - 'metadata_relay/**'
      - '.github/workflows/python-lint_metadata_relay.yaml'
  release:
    types: [ published ]
  workflow_dispatch:

jobs:
  lint-code:
    name: Lint Python Code
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4
      - uses: astral-sh/ruff-action@v3
        with:
          src: "./metadata_relay"

  build-and-push:
    needs: lint-code
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

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

      - name: Log in to GitHub Container Registry
        uses: docker/login-action@v3
        if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Extract version
        id: version
        run: |
          if [[ "${{ github.event_name }}" == "release" ]]; then
            VERSION="${{ github.event.release.tag_name }}"
          elif [[ "${{ github.ref_type }}" == "tag" ]]; then
            VERSION="${{ github.ref_name }}"
          else
            DATE_STAMP=$(date -u +'%Y.%m.%d')
            VERSION="dev-${DATE_STAMP}-${{ github.run_number }}"
          fi
          echo "version=$VERSION" >> $GITHUB_OUTPUT

      - name: Extract metadata (tags, labels) for Docker
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ghcr.io/${{ github.repository_owner }}/${{ github.event.repository.name }}/metadata_relay
          tags: |
            type=raw,value=latest,enable=${{ github.event_name == 'release' }}
            type=raw,value=${{ steps.version.outputs.version }},enable=${{ github.event_name != 'release' }}
            type=ref,event=branch
            type=ref,event=pr
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}}
            type=sha

      - name: Build and push Docker image
        uses: docker/build-push-action@v6
        with:
          context: ./metadata_relay
          file: ./metadata_relay/Dockerfile
          platforms: linux/amd64,linux/arm64
          push: ${{ github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          build-args: |
            VERSION=${{ steps.meta.outputs.version }}