name: PR-CI

on:
  pull_request:
    types: [opened, synchronize]
    branches: ["master"] 

jobs:
  build-test:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - name: Set up Java 8
        uses: actions/setup-java@v4
        with:
          distribution: temurin
          java-version: "8"

      - name: Cache Maven repo
        uses: actions/cache@v4
        with:
          path: ~/.m2
          key: m2-${{ runner.os }}-${{ hashFiles('**/pom.xml') }}
          restore-keys: |
            m2-${{ runner.os }}-

      - name: Maven Build
        run: mvn -B clean package -DskipTests