name: Build and Test

on:
  pull_request:
    branches:
      - master
      - main
  push:
    branches:
      - master
      - main

jobs:
  verify:
    name: Maven verify (JDK 17)
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Set up JDK 17
        uses: actions/setup-java@v4
        with:
          distribution: temurin
          java-version: "17"
          cache: maven

      - name: Check Java source BOM
        shell: bash
        run: |
          python3 - <<'PY'
          from pathlib import Path
          files = [path for path in Path('.').rglob('*.java')
                   if path.read_bytes().startswith(b'\xef\xbb\xbf')]
          if files:
              raise SystemExit('UTF-8 BOM found:\n' + '\n'.join(map(str, files)))
          PY

      - name: Build and run existing tests
        run: mvn -B -s settings.xml verify