name: "Docker Image CI: crawlab"

on:
  push:
    branches: [ develop, main ]
  #pull_request:
  #  branches: [ main ]
  release:
    types: [ published ]

env:
  IMAGE_PATH_CRAWLAB_BACKEND: backend
  IMAGE_PATH_CRAWLAB_FRONTEND: frontend
  IMAGE_NAME_CRAWLAB: crawlabteam/crawlab
  IMAGE_NAME_CRAWLAB_BACKEND: crawlabteam/crawlab-backend
  IMAGE_NAME_CRAWLAB_FRONTEND: crawlabteam/crawlab-frontend

jobs:
  setup:
    runs-on: ubuntu-latest
    outputs:
      is_matched_backend: ${{ steps.changed_files_backend.outputs.matched }}
      is_matched_frontend: ${{ steps.changed_files_frontend.outputs.matched }}
      version: ${{ steps.version.outputs.version }}
    steps:
      - uses: actions/checkout@v2
      - name: Get changed files
        id: changed-files
        uses: tj-actions/changed-files@v18.7
      - id: changed_files_backend
        name: Check changed files for backend
        run: |
          for file in ${{ steps.changed-files.outputs.all_changed_files }}; do
            if [[ $file =~ ^${IMAGE_PATH_CRAWLAB_BACKEND}/.* ]]; then
              is_matched=1
              break
            fi
          done
          echo "::set-output name=matched::$is_matched"
      - id: changed_files_frontend
        name: Check changed files for frontend
        run: |
          for file in ${{ steps.changed-files.outputs.all_changed_files }}; do
            if [[ $file =~ ^${IMAGE_PATH_CRAWLAB_FRONTEND}/.* ]]; then
              is_matched=1
              break
            fi
          done
          echo "::set-output name=matched::$is_matched"
      - id: version
        name: Get version
        run: |
          # Strip git ref prefix from version
          VERSION=$(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" == "main" ] && VERSION=latest
          
          echo "::set-output name=version::$VERSION"

  build-backend:
    needs: [ setup ]
    if: needs.setup.outputs.is_matched_backend == '1'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - name: Get changed files
        id: changed-files
        uses: tj-actions/changed-files@v18.7
      - name: Build image
        run: |
          cd $IMAGE_PATH_CRAWLAB_BACKEND
          docker build . --file Dockerfile --tag image
      - name: Log into registry
        run: echo ${{ secrets.DOCKER_PASSWORD}} | docker login -u ${{ secrets.DOCKER_USERNAME }} --password-stdin
      - name: Push image
        run: |
          IMAGE_VERSION=${{needs.setup.outputs.version}}
          IMAGE_NAME=$IMAGE_NAME_CRAWLAB_BACKEND
          docker tag image $IMAGE_NAME:$IMAGE_VERSION
          docker push $IMAGE_NAME:$IMAGE_VERSION

  build-frontend:
    needs: [ setup ]
    if: needs.setup.outputs.is_matched_frontend == '1'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - name: Get changed files
        id: changed-files
        uses: tj-actions/changed-files@v18.7
      - name: Build image
        run: |
          cd $IMAGE_PATH_CRAWLAB_FRONTEND
          docker build . --file Dockerfile --tag image
      - name: Log into registry
        run: echo ${{ secrets.DOCKER_PASSWORD}} | docker login -u ${{ secrets.DOCKER_USERNAME }} --password-stdin
      - name: Push image
        run: |
          IMAGE_VERSION=${{needs.setup.outputs.version}}
          IMAGE_NAME=$IMAGE_NAME_CRAWLAB_FRONTEND
          docker tag image $IMAGE_NAME:$IMAGE_VERSION
          docker push $IMAGE_NAME:$IMAGE_VERSION

  build:
    needs: [ setup, build-backend, build-frontend ]
    if: needs.setup.outputs.is_matched_backend == '1' || needs.setup.outputs.is_matched_frontend == '1'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - name: Build image
        run: docker build . --file Dockerfile --tag image
      - name: Log into registry
        run: echo ${{ secrets.DOCKER_PASSWORD}} | docker login -u ${{ secrets.DOCKER_USERNAME }} --password-stdin
      - name: Push image
        run: |
          IMAGE_VERSION=${{needs.setup.outputs.version}}
          IMAGE_ID=$IMAGE_NAME_CRAWLAB
          docker tag image $IMAGE_ID:$VERSION
          docker push $IMAGE_ID:$VERSION