name: Test, build and push to Docker Hub

on:
  push:
    branches: [ master, arm-build ]

jobs:
  build:
    runs-on: ubuntu-latest
    steps:

      - uses: actions/checkout@v2
      - name: Set up Python 3.9
        uses: actions/setup-python@v2
        with:
          python-version: 3.9

      - name: Install dependencies
        run: |
          python -m pip install --upgrade pip
          pip install flake8 pytest
          if [ -f requirements.txt ]; then pip install -r requirements.txt; fi

      - name: Lint with flake8
        run: |
          # stop the build if there are Python syntax errors or undefined names
          flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
          # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
          flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics

      - name: Create release metadata
        run: |
          # COPY'ed by Dockerfile into backend/ of the image, then read by the server in store.py
          echo ${{ github.sha }} > backend/source.txt
          echo ${{ github.ref }} > backend/tag.txt

      - name: Test with pytest
        run: |
          # Each test is totally isolated and performs its own cleanup/reset
          cd backend; ./run_all_tests.sh

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v1
        with:
          image: tonistiigi/binfmt:latest
          platforms: all
      - name: Login to Docker Hub
        uses: docker/login-action@v1
        with:
          username: ${{ secrets.DOCKER_HUB_USERNAME }}
          password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}

      - name: Set up Docker Buildx
        id: buildx
        uses: docker/setup-buildx-action@v1
        with:
          install: true
          version: latest
          driver-opts: image=moby/buildkit:master

      - name: Build and push
        id: docker_build
        uses: docker/build-push-action@v2
        with:
          context: ./
          file: ./Dockerfile
          push: true
          tags: |
            ${{ secrets.DOCKER_HUB_USERNAME }}/changedetection.io:latest
          #                ${{ secrets.DOCKER_HUB_USERNAME }}:/changedetection.io:${{ env.RELEASE_VERSION }}
          platforms: linux/amd64,linux/arm64,linux/arm/v6,linux/arm/v7
#          platforms: linux/amd64
          cache-from: type=local,src=/tmp/.buildx-cache
          cache-to: type=local,dest=/tmp/.buildx-cache

      - name: Image digest
        run: echo step SHA ${{ steps.vars.outputs.sha_short }} tag ${{steps.vars.outputs.tag}} branch ${{steps.vars.outputs.branch}} digest ${{ steps.docker_build.outputs.digest }}

# failed: Cache service responded with 503
#      - name: Cache Docker layers
#        uses: actions/cache@v2
#        with:
#          path: /tmp/.buildx-cache
#          key: ${{ runner.os }}-buildx-${{ github.sha }}
#          restore-keys: |
#            ${{ runner.os }}-buildx-