name: Publish Docker images

on:
  push:
    branches:
      - master
  release:
    types: [published]

jobs:
  build-and-push:
    name: Build and Push
    runs-on: ubuntu-latest
    strategy:
      matrix:
        platform: [linux/amd64, linux/arm64]
    permissions:
      contents: read
      packages: write

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

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v2

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

      - name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Extract version
        id: version
        run: |
          VERSION=$(grep '^version:' shard.yml | cut -d ' ' -f 2)
          echo "version=$VERSION" >> $GITHUB_OUTPUT

      - name: Build and push
        uses: docker/build-push-action@v5
        with:
          context: .
          platforms: ${{ matrix.platform }}
          push: true
          tags: |
            sjdonado/bit:latest-${{ contains(matrix.platform, 'amd64') && 'amd64' || 'arm64' }}
            ${{ github.event_name == 'release' && format('sjdonado/bit:{0}-{1}', steps.version.outputs.version, contains(matrix.platform, 'amd64') && 'amd64' || 'arm64') || '' }}
          cache-from: type=gha
          cache-to: type=gha,mode=max