name: Build PR snapshot

on:
  pull_request:
    paths:
      - '**.gradle'
      - '**.properties'
      - '**/src/**'
    types: [ opened, synchronize, reopened ]
jobs:
  validate-gradle:
    name: "Validate Gradle wrapper"
    runs-on: ubuntu-20.04
    steps:
      - uses: actions/checkout@v2
        with:
          fetch-depth: 0
          
      - uses: gradle/wrapper-validation-action@v1
  license:
    name: "Verify License integrity"
    runs-on: ubuntu-20.04
    if: |
      !contains(github.event.head_commit.message, '[ci skip]')
    steps:
      - uses: actions/checkout@v2
      
      - name: Set up JDK 8
        uses: actions/setup-java@v2
        with:
          java-version: 8
          distribution: 'adopt'
      
      - name: Cache Gradle wrapper
        uses: actions/cache@v2
        with:
          path: ~/.gradle/wrapper
          key: gradle-wrapper-${{ runner.os }}-${{ hashFiles('gradle/wrapper/**/*') }}
          restore-keys: gradle-wrapper-${{ runner.os }}-

      - name: Cache packages
        id: cache-packages
        uses: actions/cache@v2
        with:
          path: ~/.gradle/caches
          key: gradle-packages-${{ runner.os }}-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
          restore-keys: gradle-packages-${{ runner.os }}-
      
      - name: Make gradlew executable
        run: chmod +x ./gradlew
      
      - name: Build with Gradle
        run: |
          ./gradlew licenseCheck
          
      # Remove some potentially problematic files from the Gradle cache,
      # so that GitHub Actions doesn't cache them.
      - name: Cleanup Gradle Cache
        if: steps.cache-packages.outputs.cache-hit != 'true'
        run: |
          rm -f  $HOME/.gradle/caches/*/*.lock
          rm -rf $HOME/.gradle/caches/*/plugin-resolution/
          rm -rf $HOME/.gradle/caches/*/scripts/
          rm -rf $HOME/.gradle/caches/*/scripts-remapped/
          rm -rf $HOME/.gradle/caches/*/fileHashes/
          rm -f  $HOME/.gradle/caches/journal-1/file-access.bin  

  build:
    name: "Build"
    strategy:
      matrix:
        java: [ 8, 11, 15 ]
    runs-on: ubuntu-20.04
    if: |
      !contains(github.event.head_commit.message, '[ci skip]')
    steps:
      - uses: actions/checkout@v2
      
      - name: Set up JDK ${{ matrix.java }}
        uses: actions/setup-java@v2
        with:
          java-version: ${{ matrix.java }}
          distribution: 'adopt'
      
      - name: Cache Gradle wrapper
        uses: actions/cache@v2
        with:
          path: ~/.gradle/wrapper
          key: gradle-wrapper-${{ runner.os }}-${{ hashFiles('gradle/wrapper/**/*') }}
          restore-keys: gradle-wrapper-${{ runner.os }}-

      - name: Cache packages
        id: cache-packages
        uses: actions/cache@v2
        with:
          path: ~/.gradle/caches
          key: gradle-packages-${{ runner.os }}-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
          restore-keys: gradle-packages-${{ runner.os }}-
      
      - name: Make gradlew executable
        run: chmod +x ./gradlew
      
      - name: Build with Gradle
        run: |
          ./gradlew build --stacktrace --no-daemon
          
      # Remove some potentially problematic files from the Gradle cache,
      # so that GitHub Actions doesn't cache them.
      - name: Cleanup Gradle Cache
        if: steps.cache-packages.outputs.cache-hit != 'true'
        run: |
          rm -f  $HOME/.gradle/caches/*/*.lock
          rm -rf $HOME/.gradle/caches/*/plugin-resolution/
          rm -rf $HOME/.gradle/caches/*/scripts/
          rm -rf $HOME/.gradle/caches/*/scripts-remapped/
          rm -rf $HOME/.gradle/caches/*/fileHashes/
          rm -f  $HOME/.gradle/caches/journal-1/file-access.bin
      
      - name: Upload Artifacts
        uses: actions/upload-artifact@v2
        with:
          name: '${{ github.event.repository.name }} PR${{ github.event.number }} Snapshot #${{ github.run_number }}'
          path: |
            **/build/libs/
            !build/libs/
            !**/*-dev.jar
            !**/*-shadow.jar
            !**/*-transformProduction*.jar
            !**/testmod*/