name: Publish Docker image

on:
  push:
    branches:
      - main
    paths-ignore:
      - './**/*.md'
      - 'LICENSE'
  release:
    types:
      - published

env:
  IMAGE_NAME: cdalvaro/docker-salt-master
  PLATFORMS: linux/amd64,linux/arm64,linux/arm/v7
  CACHE_PATH: /tmp/.buildx-docker-salt-master-cache
  EXTRA_REGISTRIES: ghcr.io quay.io

jobs:
  metadata:
    name: Metadata
    runs-on: ubuntu-latest
    outputs:
      tags: ${{ steps.tags.outputs.tags }}
      vcs_ref: ${{ steps.vcs_ref.outputs.vcs_ref }}
      created_on: ${{ steps.created_on.outputs.created_on }}
    steps:
      - name: Image Tags
        id: tags
        run: |
          IMAGE_TAG="${{ github.event.release.tag_name }}"
          [ -z "${IMAGE_TAG}" ] && IMAGE_TAG='latest'

          DOCKER_IMAGE="${IMAGE_NAME}:${IMAGE_TAG}"
          TAGS="${DOCKER_IMAGE}"
          for registry in ${EXTRA_REGISTRIES}; do
            TAGS="${TAGS},${registry}/${DOCKER_IMAGE}"
          done

          echo "Image Tag: '${IMAGE_TAG}'"
          echo "Docker image: '${DOCKER_IMAGE}'"
          echo "Tags: ${TAGS}"

          echo ::set-output name=tags::${TAGS}

      - name: VCS ref
        id: vcs_ref
        run: |
          VCS_REF="${GITHUB_SHA::8}"
          echo "VCS ref: ${VCS_REF}"
          echo ::set-output name=vcs_ref::${VCS_REF}

      - name: Created On
        id: created_on
        run: |
          CREATED_ON="$(date -u +"%Y-%m-%dT%H:%M:%SZ")"
          echo "Created on: ${CREATED_ON}"
          echo ::set-output name=created_on::${CREATED_ON}

      - name: Dump environment
        if: contains(toJSON(github.event.commits.*.message), 'ci(debug)') == true
        run: env | sort
      - name: Dump GitHub context
        if: contains(toJSON(github.event.commits.*.message), 'ci(debug)') == true
        env:
          GITHUB_CONTEXT: ${{ toJson(github) }}
        run: echo "${GITHUB_CONTEXT}"

  publish:
    name: Publish
    runs-on: ubuntu-latest
    needs: metadata
    if: contains(toJSON(github.event.commits.*.message), 'ci(debug)') == false
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v1.2.0

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v1.6.0

      - name: Cache Docker layers
        uses: actions/cache@v2.1.7
        with:
          path: ${{ env.CACHE_PATH }}
          key: ${{ runner.os }}-buildx-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-buildx-

      - name: Login to Docker Container Registry
        uses: docker/login-action@v1.13.0
        with:
          username: ${{ github.repository_owner }}
          password: ${{ secrets.DOCKER_PASSWORD }}

      - name: Login to GitHub Container Registry
        uses: docker/login-action@v1.13.0
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.CR_PAT }}

      - name: Login to Quay.io Container Registry
        uses: docker/login-action@v1.13.0
        with:
          registry: quay.io
          username: ${{ secrets.QUAYIO_USERNAME }}
          password: ${{ secrets.QUAYIO_PASSWORD }}

      - name: Build
        uses: docker/build-push-action@v2.9.0
        with:
          context: .
          file: ./Dockerfile
          platforms: ${{ env.PLATFORMS }}
          build-args: |
            VCS_REF=${{ needs.metadata.outputs.vcs_ref }}
            BUILD_DATE=${{ needs.metadata.outputs.created_on }}
          cache-from: type=local,src=${{ env.CACHE_PATH }}
          cache-to: type=local,dest=${{ env.CACHE_PATH }}
          push: true
          tags: ${{ needs.metadata.outputs.tags }}