on: pull_request

name: Inspections
jobs:
  runPHPCSInspection:
    name: Run PHPCS inspection
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2

      - name: Setup PHP
        uses: shivammathur/setup-php@v2
        with:
          php-version: "7.3"
          coverage: none
          tools: composer, cs2pr

      - name: Get Composer cache directory
        id: composer-cache
        run: echo "::set-output name=dir::$(composer config cache-files-dir)"

      - name: Setup cache
        uses: pat-s/always-upload-cache@v1.1.4
        with:
          path: ${{ steps.composer-cache.outputs.dir }}
          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
          restore-keys: ${{ runner.os }}-composer-

      - name: Install dependencies
        run: composer install --prefer-dist --no-suggest --no-progress

      - id: changes
        run: |
          URL="https://api.github.com/repos/${{ github.repository }}/pulls/${{ github.event.pull_request.number }}/files"
          FILES=$(curl -s -X GET -G $URL | jq -r '.[] | .filename' | xargs)
          echo "::set-output name=files::$FILES"
      - name: Detect coding standard violations
        run: vendor/bin/phpcs ${{ steps.changes.outputs.files }} -q --report=checkstyle | cs2pr --graceful-warnings