name: Java CI with Maven

on:
  push:
    branches: [ "main" ]
  pull_request:
    branches: [ "main" ]

jobs:
  build:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v3

      - name: Set up JDK 21
        run: |
          sudo apt-get update
          sudo apt-get install -y openjdk-21-jdk
          java -version

      - name: Set up Maven
        run: |
          sudo apt-get install -y maven
          mvn -version

      - name: Cache Maven packages
        uses: actions/cache@v3
        with:
          path: ~/.m2
          key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
          restore-keys: ${{ runner.os }}-m2

      - name: Build with Maven
        run: mvn -B compile

      - name: Run tests
        run: mvn -B test