name: Publish

on:
  push:
    branches:
      - master
  release:
    types:
      - created

env:
  GITHUB_REF_NAME: ${{ github.event.release.tag_name }}
  IMAGE_NAME: cdalvaro/saltstack-master
  PLATFORMS: linux/amd64 linux/arm64
  DOCKER_CLI_EXPERIMENTAL: enabled

jobs:
  build-and-publish:
    name: Build and publish
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v2

      - name: Enable Docker experimental
        run: |
          # Enable docker daemon experimental support.
          echo '{"experimental": true}' | sudo tee /etc/docker/daemon.json
          sudo systemctl restart docker
          # Install QEMU multi-architecture support for docker buildx.
          docker run --rm --privileged multiarch/qemu-user-static --reset -p yes

      - name: Instantiate docker buildx builder
        run: |
          docker buildx create --use
          docker buildx inspect --bootstrap

      - name: Cache latest images
        run: |
          for PLATFORM in ${PLATFORMS}; do
            docker pull --platform "${PLATFORM}" "${IMAGE_NAME}:latest"
          done

      - name: Log in to Docker Hub
        run: |
          echo "${{ secrets.DOCKER_PASSWORD }}" | docker login -u="${{ secrets.DOCKER_USERNAME }}" --password-stdin

      - name: Build and push Docker image
        run: |
          docker buildx build \
            --platform "${PLATFORMS// /,}" \
            --cache-from "${IMAGE_NAME}:latest" \
            --push --progress plain \
            --build-arg=VCS_REF="${GITHUB_SHA::7}" \
            --build-arg=BUILD_DATE="$(date +"%Y-%m-%d %H:%M:%S%:z")" \
            --tag="${IMAGE_NAME}:${GITHUB_REF_NAME:-latest}" .

  test:
    name: Test
    runs-on: ubuntu-latest
    needs: build-and-publish
    steps:
      - name: Enable Docker experimental
        run: |
          # Enable docker daemon experimental support.
          echo '{"experimental": true}' | sudo tee /etc/docker/daemon.json
          sudo systemctl restart docker
          # Install QEMU multi-architecture support for docker buildx.
          docker run --rm --privileged multiarch/qemu-user-static --reset -p yes

      - name: Test images
        env:
          CONTAINER_NAME: salt_master_test
        run: |
          IMAGE_TAG="${GITHUB_REF_NAME:-latest}"
          DOCKER_IMAGE="${IMAGE_NAME}:${IMAGE_TAG}"
          for PLATFORM in ${PLATFORMS}; do
            echo "Testing docker image ${DOCKER_IMAGE} on platform ${PLATFORM} ..."
            # test
            docker pull -q --platform "${PLATFORM}" "${DOCKER_IMAGE}"
            docker run --rm -d --name "${CONTAINER_NAME}" "${DOCKER_IMAGE}"
            docker container ls
            sleep 20
            docker exec "${CONTAINER_NAME}" salt --versions
            echo "healthcheck"
            docker exec "${CONTAINER_NAME}" /usr/local/sbin/healthcheck
            # cleanup
            docker stop ${CONTAINER_NAME}
            docker image rm "${DOCKER_IMAGE}"
          done