name: Linter
on: pull_request
jobs:
  Black:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - id: files
        uses: jitterbit/get-changed-files@v1
        continue-on-error: true

      - name: Run checks
        env:
          PR_FILES_AM: ${{ steps.files.outputs.added_modified }}
          PR_FILES_RENAMED: ${{ steps.files.outputs.renamed }}
        run: |
          PR_FILES="$PR_FILES_AM $PR_FILES_RENAMED"
          for FILE in $PR_FILES; do
              EXTENSION="${FILE##*.}"
              DIRECTORY="${FILE%%/*}"
              if [[ "$EXTENSION" == "py" && "$DIRECTORY" == "cvat-cli" ]]; then
                  CHANGED_FILES+=" $FILE"
              fi
          done

          if [[ ! -z $CHANGED_FILES ]]; then
            sudo apt-get --no-install-recommends install -y build-essential curl python3-dev python3-pip python3-venv
            python3 -m venv .env
            . .env/bin/activate
            pip install -U pip wheel setuptools
            pip install $(egrep "black.*" ./cvat-cli/requirements/development.txt)
            mkdir -p black_report

            echo "Black version: "$(black --version)
            echo "The files will be checked: "$(echo $CHANGED_FILES)
            black --check --config ./cvat-cli/pyproject.toml $CHANGED_FILES > ./black_report/black_checks.txt || EXIT_CODE=$(echo $?) || true
            deactivate
            exit $EXIT_CODE
          else
            echo "No files with the \"py\" extension found"
          fi

      - name: Upload artifacts
        if: failure()
        uses: actions/upload-artifact@v2
        with:
          name: black_report
          path: black_report