name: Linter
on: pull_request
jobs:
  PyLint:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2

      - name: Run checks
        run: |
          URL="https://api.github.com/repos/${{ github.repository }}/pulls/${{ github.event.pull_request.number }}/files"
          PR_FILES=$(curl -s -X GET -G $URL | jq -r '.[] | select(.status != "removed") | .filename')
          for files in $PR_FILES; do
            extension="${files##*.}"
            if [[ $extension == 'py' ]]; then
              changed_files_pylint+=" ${files}"
            fi
          done

          if [[ ! -z ${changed_files_pylint} ]]; 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 pylint-json2html
            pip install $(egrep "pylint.*" ./cvat/requirements/development.txt)
            pip install $(egrep "Django.*" ./cvat/requirements/base.txt)
            mkdir -p pylint_report

            echo "Pylint version: "`pylint --version | head -1`
            echo "The files will be checked: "`echo ${changed_files_pylint}`
            pylint ${changed_files_pylint} --output-format=json > ./pylint_report/pylint_checks.json || exit_code=`echo $?` || true
            pylint-json2html -o ./pylint_report/pylint_checks.html ./pylint_report/pylint_checks.json
            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: pylint_report
          path: pylint_report