multi-maven.yml

name: Multi-Matrix Maven Build

on:
  push:
    branches: [ master ]
  pull_request:
    branches: [ master ]
  schedule:
    - cron: '0 2 * * *'  # Runs daily at 2 AM UTC

jobs:
  build:

    strategy:
      matrix:
        os: [ubuntu-latest, windows-latest, macos-latest]
        java: [8, 11, 17]
      fail-fast: false

    runs-on: ${{ matrix.os }}

    steps:
    - name: Checkout Repository
      uses: actions/checkout@v3

    - name: Set Up Java ${{ matrix.java }}
      uses: actions/setup-java@v3
      with:
        distribution: 'temurin'
        java-version: ${{ matrix.java }}
        cache: maven

    - name: Display Java Version
      run: java -version

    - name: Cache Maven Dependencies
      uses: actions/cache@v3
      with:
        path: |
          ~/.m2/repository
          !~/.m2/repository/org/apache/maven/plugins/maven-surefire-plugin
        key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}-java${{ matrix.java }}
        restore-keys: |
          ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}-java
          ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
          ${{ runner.os }}-m2-

    - name: Maven Build and Test
      run: mvn clean verify

    - name: Upload Test Results
      if: always() && matrix.os == 'ubuntu-latest'
      uses: actions/upload-artifact@v3
      with:
        name: test-results-${{ matrix.os }}-java${{ matrix.java }}
        path: target/surefire-reports/

    - name: Notify on Failure
      if: failure()
      uses: dawidd6/action-send-mail@v3
      with:
        server_address: smtp.example.com
        server_port: 587
        username: ${{ secrets.SMTP_USERNAME }}
        password: ${{ secrets.SMTP_PASSWORD }}
        subject: 'Build Failure in ${{ matrix.os }} - Java ${{ matrix.java }}'
        body: |
          The build has failed for OS: ${{ matrix.os }} and Java: ${{ matrix.java }}.
          Please check the workflow logs for details.
#        to: your-email@example.com
#        from: github-actions@example.com