name: Android Emulator Tests
on: [ push, pull_request ]

jobs:
  check-if-tests-exist:
    runs-on: ubuntu-latest
    outputs:
      status: ${{ steps.check-androidTest.outputs.NOT_EMPTY }}
      min-sdk-version: ${{ steps.get-sdk-version.outputs.MIN_SDK_VERSION }}
      target-sdk-version: ${{ steps.get-sdk-version.outputs.TARGET_SDK_VERSION }}
      app-id: ${{ steps.get-app-id.outputs.APP_ID }}
    steps:
      - name: Checkout
        uses: actions/checkout@v3
        with:
          submodules: "recursive"
      - name: Check if androidTest folder is not empty
        run: |
          echo "NOT_EMPTY=$([ "$(ls -A app/src/androidTest)" ] && echo 'true' || echo 'false')"
          echo "NOT_EMPTY=$([ "$(ls -A app/src/androidTest)" ] && echo 'true' || echo 'false')" >> $GITHUB_OUTPUT
        id: check-androidTest
      - name: Get min and target sdk
        if: steps.check-androidTest.outputs.NOT_EMPTY == 'true'
        id: get-sdk-version
        run: |
            echo "MIN_SDK_VERSION=$(cat app/build.gradle | grep minSdkVersion | rev | cut -d' ' -f 1 | rev)" >> $GITHUB_OUTPUT
            echo "TARGET_SDK_VERSION=$(cat app/build.gradle | grep targetSdkVersion | rev | cut -d' ' -f 1 | rev)" >> $GITHUB_OUTPUT
      - name: Get app ID
        id: get-app-id
        run: |
            echo "APP_ID=$(cat app/build.gradle | grep applicationId | rev | cut -d' ' -f 1 | rev | tr -d '"')" >> $GITHUB_OUTPUT
      
  test:
    needs: check-if-tests-exist
    if: needs.check-if-tests-exist.outputs.status == 'true'
    runs-on: ubuntu-latest
    strategy:
      matrix:
        api-level: [34, "${{ needs.check-if-tests-exist.outputs.min-sdk-version }}", "${{ needs.check-if-tests-exist.outputs.target-sdk-version }}"]
    steps:
      - name: Checkout
        uses: actions/checkout@v3
        with:
          submodules: 'recursive'
    
      - name: Enable KVM group perms
        run: |
          echo 'KERNEL=="kvm", GROUP="kvm", MODE="0666", OPTIONS+="static_node=kvm"' | sudo tee /etc/udev/rules.d/99-kvm4all.rules
          sudo udevadm control --reload-rules
          sudo udevadm trigger --name-match=kvm

      - name: Gradle cache
        uses: gradle/gradle-build-action@v3

      - name: AVD cache
        uses: actions/cache@v4
        id: avd-cache
        with:
          path: |
            ~/.android/avd/*
            ~/.android/adb*
          key: avd-${{ matrix.api-level }}

      - name: Set up JDK environment
        uses: actions/setup-java@v3
        with:
          distribution: 'zulu'
          java-version: 17

      - name: create AVD and generate snapshot for caching
        if: steps.avd-cache.outputs.cache-hit != 'true'
        uses: reactivecircus/android-emulator-runner@v2
        with:
          api-level: ${{ matrix.api-level }}
          target: ${{ matrix.api-level >= 30 && 'google_apis' || 'default' }}
          arch: ${{ matrix.api-level < 21 && 'x86' || 'x86_64' }}
          force-avd-creation: false
          emulator-options: -no-window -gpu swiftshader_indirect -noaudio -no-boot-anim -camera-back none
          disable-animations: false
          script: echo "Generated AVD snapshot for caching."

      - name: Run connected tests
        uses: ReactiveCircus/android-emulator-runner@v2
        with:
          api-level: ${{ matrix.api-level }}
          target: ${{ matrix.api-level >= 30 && 'google_apis' || 'default' }}
          arch: ${{ matrix.api-level < 21 && 'x86' || 'x86_64' }}
          force-avd-creation: false
          emulator-options: -no-snapshot-save -no-window -gpu swiftshader_indirect -noaudio -no-boot-anim -camera-back none
          disable-animations: true
          script: |
            adb uninstall ${{needs.check-if-tests-exist.outputs.app-id}} || true
            adb uninstall ${{needs.check-if-tests-exist.outputs.app-id}}.test || true
            adb uninstall ${{needs.check-if-tests-exist.outputs.app-id}}.androidTest || true
            chmod +x gradlew
            ./gradlew :app:connectedCheck --stacktrace
            adb uninstall ${{needs.check-if-tests-exist.outputs.app-id}} || true
            adb uninstall ${{needs.check-if-tests-exist.outputs.app-id}}.test || true
            adb uninstall ${{needs.check-if-tests-exist.outputs.app-id}}.androidTest || true