name: Publish Docker Container Images
on:
  push:
    branches: [main]

env:
  REGISTRY: ghcr.io
  REPO_NAME: ${{ github.repository }}

permissions:
  contents: read
  packages: write

jobs:

  # ------------------------------------------------------------------------------------------
  # To be decided: Script-Deploy or Dockerfile-Deploy:
  # Script:
  #   + Separates the golang build from the corso build.
  #   - Haven't figured out multiplatform builds yet.
  #   - Doesn't cache, always takes 10-15 minutes per build in the matrix.
  # Dockerfile:
  #   + Once cached, takes <1m to deploy.
  #   + Multiplatform.
  #   + Extended features (such as tagging) can be handled by more github actions.
  #   - When not cached, can take >2 hours to build (at least initially).
  #   - Currently includes the complete golang:1.18 image.
  # ------------------------------------------------------------------------------------------

  Script-Deploy:
    runs-on: ubuntu-latest
    defaults:
      run:
        working-directory: build
    strategy:
      matrix:
        BUILD_ARCH: [amd64, arm64]
        BUILD_OS: [linux]
    env:
      IMAGE_PREFIX: ghcr.io
      VERSION_SUFFIX: rolling
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3

      - name: Run build script
        run: >
          ./build-container.sh
          --arch ${{ matrix.BUILD_ARCH }}
          --prefix ${{ env.IMAGE_PREFIX }}
          --suffix ${{ env.VERSION_SUFFIX }}

      # login step boilerplate from:
      # https://docs.github.com/en/packages/managing-github-packages-using-github-actions-workflows/publishing-and-installing-a-package-with-github-actions#upgrading-a-workflow-that-accesses-ghcrio
      - name: Log in to registry
        run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u $ --password-stdin

      - name: Push image
        env:
          IMAGE_ID: ${{ env.IMAGE_PREFIX }}/alcionai/corso
          VERSION: ${{ matrix.BUILD_OS }}-${{ matrix.BUILD_ARCH }}-${{ env.VERSION_SUFFIX }}
        run: |
          docker images -a
          docker push ${{ env.IMAGE_ID }}:${{ env.VERSION }}

  Dockerfile-Deploy:
    runs-on: ubuntu-latest
    env:
      TARGETOS: linux
      TARGETARCH: arm64
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3
      
      # apparently everyone uses this step
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v2

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

      # In case we want to switch to dockerhub      
      # - name: Login to DockerHub
      #   uses: docker/login-action@v2
      #   with:
      #     username: ${{ secrets.DOCKERHUB_USERNAME }}
      #     password: ${{ secrets.DOCKERHUB_TOKEN }}

      # retrieve credentials for ghcr.io
      - name: Login to Github Packages
        uses: docker/login-action@v2
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      # build the image
      - name: Build image and push to Docker Hub and GitHub Container Registry
        uses: docker/build-push-action@v3
        with:
          context: .
          file: ./docker/Dockerfile
          platforms: linux/amd64,linux/arm64
          push: true
          tags: ghcr.io/alcionai/corso:rolling
          # use the github cache
          cache-from: type=gha
          cache-to: type=gha,mode=max

      # check the image digest
      - name: Image digest
        run: echo ${{ steps.docker_build.outputs.digest }}