maven.yml

# This workflow will build a Java project with Maven, and cache/restore any dependencies to improve the workflow execution time
# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-maven

name: Java CI with Maven

on:
  push:
    branches: [ main ]
  pull_request:
    branches: [ main ]
  workflow_dispatch:
  
env:
  EXERCISES_DIRECTORY: ./code

jobs:
  list-exercises:
    runs-on: ubuntu-latest
    outputs:
      exercises: ${{steps.list.outputs.exercises}}
    steps:
      - uses: actions/checkout@v2
      - id: list
        run: echo "::set-output name=exercises::$(ls $EXERCISES_DIRECTORY | jq -cnR '[inputs | select(length>0)]')"
  build:
    runs-on: ubuntu-latest
    needs: list-exercises
    strategy:
      fail-fast: false
      matrix:
        exercise: ${{fromJson(needs.list-exercises.outputs.exercises)}}    
    steps:
    - uses: actions/checkout@v3
    - name: Set up JDK
      uses: actions/setup-java@v3
      with:
        java-version: '17'
        distribution: 'temurin'
        cache: maven
    - name: Test with Maven
      run: ./mvnw -B verify --file pom.xml
      working-directory: ${{env.EXERCISES_DIRECTORY}}/${{matrix.exercise}}
  summary:
    if: ${{ always() }}
    runs-on: ubuntu-latest
    needs: build
    steps:
      - name: Check build matrix status
        if: ${{ needs.build.result != 'success' }}
        run: exit 1