name: Build and Push Docker Image

on:
  push:
    branches:
      - docker_workflow

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v2

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

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

      - name: Set Repo Name to Lowercase
        run: echo "REPO_NAME_LOWER=$(echo ${{ github.event.repository.name }} | tr '[:upper:]' '[:lower:]')" >> $GITHUB_ENV

      - name: Build and Push Image
        uses: docker/build-push-action@v2
        with:
          context: .
          file: ./Dockerfile
          push: true
          tags: ghcr.io/${{ github.repository_owner }}/${{ env.REPO_NAME_LOWER }}/jobspy_api:latest

      - name: Fetch Latest Release Tag
        id: latest_version
        run: |
          LATEST_TAG=$(curl --silent "https://api.github.com/repos/${{ github.repository }}/releases/latest" \
          -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" | jq -r .tag_name)
          echo "::set-output name=version::${LATEST_TAG}"

      - name: Set Release Tag Name
        run: |
          CURRENT_VERSION=${{ steps.latest_version.outputs.version }}
          if [[ $CURRENT_VERSION == v0.*.0 ]]; then
            MINOR_VERSION=$(echo $CURRENT_VERSION | cut -d. -f2)
            NEW_MINOR_VERSION=$((MINOR_VERSION + 1))
            RELEASE_TAG="v0.${NEW_MINOR_VERSION}.0"
          else
            RELEASE_TAG="v0.1.0"
          fi
          echo "RELEASE_TAG=${RELEASE_TAG}" >> $GITHUB_ENV

      - name: Create Release
        id: create_release
        uses: actions/create-release@v1
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
          tag_name: ${{ env.RELEASE_TAG }}
          release_name: Docker ${{ env.RELEASE_TAG }}
          draft: false
          prerelease: false

      - name: Attach Docker Image to Release
        run: |
          echo "Image ghcr.io/${{ github.repository }}/jobspy_api:latest is available under assets in the release."