on: [pull_request]

name: Check pull request
jobs:
  unit-tests:
    runs-on: ubuntu-latest
    steps:
    - name: Check if relevant files have changed
      uses: actions/github-script@a3e7071a34d7e1f219a8a4de9a5e0a34d1ee1293
      id: service-changed
      with:
        result-encoding: string
        script: |
          const result = await github.pulls.listFiles({
            owner: context.payload.repository.owner.login,
            repo: context.payload.repository.name,
            pull_number: context.payload.number,
            per_page: 100
          })
          const files = result.data.filter(file =>
            // We wanna run this if the PR workflow is modified
            (file.filename.endsWith(".yml") && !file.filename.endsWith("pull_request.yml")) ||
            // Changes in Markdown files don't need tests
            file.filename.endsWith(".md") ||
            // Changes to fastlane metadata aren't covered by tests
            file.filename.startsWith("fastlane/")
          )
          // If filtered file count and source file count is equal, it means all files
          // in this PR are skip-worthy.
          return files.length != result.data.length

    - uses: actions/setup-java@d202f5dbf7256730fb690ec59f6381650114feb2
      if: ${{ steps.service-changed.outputs.result == 'true' }}
      with:
        java-version: '11'

    - name: Checkout repository
      if: ${{ steps.service-changed.outputs.result == 'true' }}
      uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f
      with:
        fetch-depth: 0

    - name: Copy CI gradle.properties
      if: ${{ steps.service-changed.outputs.result == 'true' }}
      run: mkdir -p ~/.gradle ; cp .github/ci-gradle.properties ~/.gradle/gradle.properties

    - name: Run unit tests
      if: ${{ steps.service-changed.outputs.result == 'true' }}
      uses: burrunan/gradle-cache-action@03c71a8ba93d670980695505f48f49daf43704a6
      with:
        arguments: apiCheck test lintFreeDebug spotlessCheck -PslimTests

    - name: (Fail-only) upload test report
      if: failure()
      uses: actions/upload-artifact@27121b0bdffd731efa15d66772be8dc71245d074
      with:
          name: Test report
          path: app/build/reports

  run-screenshot-tests:
    runs-on: macOS-latest
    steps:
    - name: Check if relevant files have changed
      uses: actions/github-script@a3e7071a34d7e1f219a8a4de9a5e0a34d1ee1293
      id: service-changed
      with:
        result-encoding: string
        script: |
          const result = await github.pulls.listFiles({
            owner: context.payload.repository.owner.login,
            repo: context.payload.repository.name,
            pull_number: context.payload.number,
            per_page: 100
          })
          const files = result.data.filter(file =>
            // We wanna run this if the PR workflow is modified
            (file.filename.endsWith(".yml") && !file.filename.endsWith("pull_request.yml")) ||
            // Changes in Markdown files don't need tests
            file.filename.endsWith(".md") ||
            // Changes to fastlane metadata aren't covered by tests
            file.filename.startsWith("fastlane/")
          )
          // If filtered file count and source file count is equal, it means all files
          // in this PR are skip-worthy.
          return files.length != result.data.length

    - uses: actions/cache@c64c572235d810460d0d6876e9c705ad5002b353
      if: ${{ steps.service-changed.outputs.result == 'true' }}
      id: avd-cache
      with:
        path: |
          ~/.android/avd/*
          ~/.android/adb*
        key: avd-23

    - uses: actions/setup-java@d202f5dbf7256730fb690ec59f6381650114feb2
      if: ${{ steps.service-changed.outputs.result == 'true' }}
      with:
        java-version: '11'

    - name: Checkout repository
      if: ${{ steps.service-changed.outputs.result == 'true' }}
      uses: actions/checkout@5a4ac9002d0be2fb38bd78e4b4dbde5606d7042f
      with:
        fetch-depth: 0

    - name: Copy CI gradle.properties
      if: ${{ steps.service-changed.outputs.result == 'true' }}
      run: mkdir -p ~/.gradle ; cp .github/ci-gradle.properties ~/.gradle/gradle.properties

    - name: Create AVD and generate snapshot for caching
      uses: reactivecircus/android-emulator-runner@5de26e4bd23bf523e8a4b7f077df8bfb8e52b50e
      if: ${{ steps.avd-cache.outputs.cache-hit != 'true' }}
      with:
        api-level: 23
        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 screenshot tests
      uses: reactivecircus/android-emulator-runner@5de26e4bd23bf523e8a4b7f077df8bfb8e52b50e
      if: ${{ steps.service-changed.outputs.result == 'true' }}
      with:
        api-level: 23
        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: ./gradlew connectedCheck -PslimTests

    - name: (Fail-only) upload test report
      if: failure()
      uses: actions/upload-artifact@27121b0bdffd731efa15d66772be8dc71245d074
      with:
          name: Test report
          path: app/build/reports