name: clang-format

on:
  push:
    branches: [ master ]
    paths:
      - 'android/app/src/**.java'
      - '.clang-format'
      - '.github/workflows/clang-format.yml'
  pull_request:
    branches: [ master ]
    paths:
      - 'android/app/src/**.java'
      - '.clang-format'
      - '.github/workflows/clang-format.yml'

jobs:
  check-formatting:
    runs-on: ubuntu-latest
    continue-on-error: true  # TODO(AB): Remove this line when ready to enforce formatting.

    steps:
      - uses: actions/checkout@v4

      - name: Install clang-format
        run: |
          sudo apt-get update
          sudo apt-get install -y clang-format-19
          clang-format-19 --version

      - name: Check Java formatting
        run: |
          JAVA_FILES=($(find android/app/src -name '*.java'))

          FORMATTING_ISSUES=$(clang-format-19 --dry-run --Werror $JAVA_FILES 2>&1 || true)

          if [ -n "$FORMATTING_ISSUES" ]; then
            echo "$FORMATTING_ISSUES"
            echo ""
            echo "To fix formatting, please run:"
            echo "  clang-format -i <file>"
            exit 1
          fi