name: Docker build and push

on:
  push:

jobs:
  build:
    name: Build Docker image
    runs-on: ubuntu-latest
    env:
      IMAGE_TAG: ghcr.io/${{ github.repository_owner }}/tdlightbotapi


    steps:
      - name: Checkout current repo
        uses: actions/checkout@v2
        with:
          submodules: "recursive"

      - name: Get version
        run: |
          # Get latest commit short hash
          HASH_VERSION=$(git rev-parse --short HEAD)

          # Strip git ref prefix from version
          VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')

          # Strip "v" prefix from tag name
          [[ "${{ github.ref }}" == "refs/tags/"* ]] && VERSION=$(echo $VERSION | sed -e 's/^v//')

          # Use Docker `latest` tag convention
          [ "$VERSION" == "master" ] && VERSION=latest

          # Convert IMAGE_TAG, HASH_VERSION and VERSION to lowercase (repository name must be lowercase)
          IMAGE_TAG=$(echo "$IMAGE_TAG" | awk '{print tolower($0)}')
          HASH_VERSION=$(echo "$HASH_VERSION" | awk '{print tolower($0)}')
          VERSION=$(echo "$VERSION" | awk '{print tolower($0)}')
          ARCH=${{ matrix.arch }}
          SAFE_ARCH=${ARCH///}  # linux/amd64 -> linuxamd64

          # Store variable for future use
          echo "IMAGE_TAG=$IMAGE_TAG" >> $GITHUB_ENV
          echo "HASH_VERSION=$HASH_VERSION" >> $GITHUB_ENV
          echo "VERSION=$VERSION" >> $GITHUB_ENV
          echo "SAFE_ARCH=$SAFE_ARCH" >> $GITHUB_ENV

          # Print debug info
          echo "hash version: $HASH_VERSION"
          echo "version: $VERSION"
          echo "safe arch: $SAFE_ARCH"

          # Save env to file
          cat $GITHUB_ENV > github.env

      - name: Login to ghcr registry
        uses: docker/login-action@v1
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GH_ACCESS_TOKEN }}


      - name: Build and push image
        run: |
            docker build . -t ${{ env.IMAGE_TAG }}:${{ env.HASH_VERSION }}
            docker push ${{ env.IMAGE_TAG }}:${{ env.HASH_VERSION }}