name: format code
on:
  pull_request:

jobs:
  format-code:
    name: Format Code
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          submodules: 'recursive'

      - name: set up JDK 17
        uses: actions/setup-java@v4
        with:
          distribution: 'temurin'
          java-version: '17'

      - name: Cache Gradle packages
        uses: actions/cache@v4
        with:
          path: |
            ~/.gradle/caches
            ~/.gradle/wrapper
          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
          restore-keys: |
            ${{ runner.os }}-gradle-

      - name: Make format
        run: make format

      # actions/checkout fetches only a single commit in a detached HEAD state. Therefore
      # we need to pass the current branch, otherwise we can't commit the changes.
      # GITHUB_HEAD_REF is the name of the head branch. GitHub Actions only sets this for PRs.
      - name: Commit Formatted Code
        run: ./scripts/commit-formatted-code.sh $GITHUB_HEAD_REF