name: docker-image

on:
  push:
    branches:
      - main
    tags:
      - '*.*.*'
  pull_request:

jobs:
  build-docker-image:
    runs-on: ubuntu-latest
    steps:
      -
        name: Checkout
        uses: actions/checkout@v3
        with:
          fetch-depth: 0
      -
        name: Prepare
        id: prep
        run: |
          DOCKER_IMAGE=${DOCKERHUB_ORGANIZATION:-vagrantlibvirt}/vagrant-libvirt
          VERSION=noop
          if [ "${{ github.event_name }}" = "schedule" ]; then
            VERSION=nightly
          elif [[ $GITHUB_REF == refs/tags/* ]]; then
            VERSION=${GITHUB_REF#refs/tags/}
          elif [[ $GITHUB_REF == refs/heads/* ]]; then
            VERSION=$(echo ${GITHUB_REF#refs/heads/} | sed -r 's#/+#-#g')
            if [ "${{ github.event.repository.default_branch }}" = "$VERSION" ]; then
              VERSION=edge
            fi
          elif [[ $GITHUB_REF == refs/pull/* ]]; then
            VERSION=pr-${{ github.event.number }}
          fi
          TAGS="${DOCKER_IMAGE}:${VERSION}"
          if [[ $VERSION =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
            MINOR=${VERSION%.*}
            MAJOR=v${MINOR%.*}
            TAGS="$TAGS,${DOCKER_IMAGE}:${MINOR},${DOCKER_IMAGE}:${MAJOR},${DOCKER_IMAGE}:latest"
          elif [ "${{ github.event_name }}" = "push" ]; then
            TAGS="$TAGS,${DOCKER_IMAGE}:sha-${GITHUB_SHA::8}"
          fi
          echo ::set-output name=version::${VERSION}
          echo ::set-output name=tags::${TAGS}
          echo ::set-output name=slim_tags::$(echo $TAGS | sed "s/,/-slim,/g")-slim
          echo ::set-output name=created::$(date -u +'%Y-%m-%dT%H:%M:%SZ')
        env:
          DOCKERHUB_ORGANIZATION: ${{ secrets.DOCKERHUB_ORGANIZATION }}
      -
        name: Set up QEMU
        uses: docker/setup-qemu-action@v2
      -
        name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v1
        with:
          driver-opts: image=moby/buildkit:master
      -
        name: Cache Docker layers
        uses: actions/cache@v2
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-buildx-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-buildx-
      -
        name: Check have credentials
        id: have_credentials
        run: |
          echo ::set-output name=access::${{ secrets.DOCKERHUB_USERNAME != '' && github.event_name != 'pull_request' }}
      -
        name: Login to DockerHub
        if: steps.have_credentials.outputs.access == 'true'
        uses: docker/login-action@v2
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
      -
        name: Build and push main image
        id: docker_build
        uses: docker/build-push-action@v3
        with:
          context: .
          platforms: linux/amd64
          push: ${{ steps.have_credentials.outputs.access }}
          tags: ${{ steps.prep.outputs.tags }}
          target: final
          labels: |
            org.opencontainers.image.title=${{ github.event.repository.name }}
            org.opencontainers.image.description=${{ github.event.repository.description }}
            org.opencontainers.image.url=${{ github.event.repository.html_url }}
            org.opencontainers.image.source=${{ github.event.repository.clone_url }}
            org.opencontainers.image.version=${{ steps.prep.outputs.version }}
            org.opencontainers.image.created=${{ steps.prep.outputs.created }}
            org.opencontainers.image.revision=${{ github.sha }}
            org.opencontainers.image.licenses=${{ github.event.repository.license.spdx_id }}
          cache-from: type=local,src=/tmp/.buildx-cache
          cache-to: type=local,dest=/tmp/.buildx-cache,mode=max
      -
        name: Build and push slim image
        id: docker_build_slim
        uses: docker/build-push-action@v3
        with:
          context: .
          platforms: linux/amd64
          push: ${{ steps.have_credentials.outputs.access }}
          tags: ${{ steps.prep.outputs.slim_tags }}
          target: slim
          labels: |
            org.opencontainers.image.title=${{ github.event.repository.name }}
            org.opencontainers.image.description=${{ github.event.repository.description }}
            org.opencontainers.image.url=${{ github.event.repository.html_url }}
            org.opencontainers.image.source=${{ github.event.repository.clone_url }}
            org.opencontainers.image.version=${{ steps.prep.outputs.version }}
            org.opencontainers.image.created=${{ steps.prep.outputs.created }}
            org.opencontainers.image.revision=${{ github.sha }}
            org.opencontainers.image.licenses=${{ github.event.repository.license.spdx_id }}
          cache-from: type=local,src=/tmp/.buildx-cache
          cache-to: type=local,dest=/tmp/.buildx-cache,mode=max
      -
        name: Image digest
        run: echo ${{ steps.docker_build.outputs.digest }}
      -
        name: Image digest Slim
        run: echo ${{ steps.docker_build_slim.outputs.digest }}