on:
  pull_request:
    paths:
      - '.github/**'
      - 'app/**'
      - 'gradle/**'
      - '*.properties'
      - '*.gradle'
      - 'gradlew'
      - 'gradlew.bat'

name: Check pull request
jobs:
  test-pr:
    runs-on: macos-latest
    strategy:
      matrix:
        api-level: [23, 29]
        variant: [Debug, Release]
    steps:

    - uses: actions/checkout@master

    - name: Copy CI gradle.properties
      run: mkdir -p ~/.gradle ; cp .github/ci-gradle.properties ~/.gradle/gradle.properties

    - name: Generate cache key
      run: ./.github/checksum.sh checksum.txt

    - name: Cache gradle modules
      uses: actions/cache@v1
      with:
        path: ~/.gradle/caches/modules-2
        key: ${{ runner.os }}-gradlemodules-${{ hashFiles('checksum.txt') }}
        restore-keys: |
          ${{ runner.os }}-gradlemodules-

    - name: Cache gradle jars
      uses: actions/cache@v1
      with:
        path: ~/.gradle/caches/jars-3
        key: ${{ runner.os }}-gradlejars-${{ hashFiles('checksum.txt') }}
        restore-keys: |
          ${{ runner.os }}-gradlejars-

    - name: Cache gradle build
      uses: actions/cache@v1
      with:
        path: ~/.gradle/caches/build-cache-1
        key: ${{ runner.os }}-gradlebuildcache-${{ hashFiles('checksum.txt') }}
        restore-keys: |
          ${{ runner.os }}-gradlebuildcache-

    - name: Run unit tests
      run: ./gradlew test${{ matrix.variant }} lint${{ matrix.variant}} -Dpre-dex=false

    - name: Run instrumentation tests
      uses: reactivecircus/android-emulator-runner@v2
      with:
        api-level: ${{ matrix.api-level }}
        target: default
        script: ./gradlew connectedCheck