circle.yml

version: 2
references:
  ## Cache
  cache_key: &cache_key
    key: cache-{{ checksum "gradle/wrapper/gradle-wrapper.properties" }}-{{ checksum "build.gradle.kts" }}-{{ checksum "app/build.gradle.kts" }}
  restore_cache: &restore_cache
    restore_cache:
      <<: *cache_key
  save_cache: &save_cache
    save_cache:
      <<: *cache_key
      paths:
        - ~/.gradle
        - ~/.m2
        - ~/.android

  ## Workspace
  workspace: &workspace
      ~/workspace
  attach_debug_workspace: &attach_debug_workspace
    attach_workspace:
      at: *workspace
  persist_debug_workspace: &persist_debug_workspace
    persist_to_workspace:
      root: *workspace
      paths:
        - app/build/outputs/androidTest-results
        - app/build/outputs/apk
        - app/build/outputs/code-coverage
        - app/build/test-results
  attach_firebase_workspace: &attach_firebase_workspace
    attach_workspace:
      at: *workspace
  persist_firebase_workspace: &persist_firebase_workspace
    persist_to_workspace:
      root: *workspace
      paths:
        - firebase
## Docker image configurations

  android_config: &android_config
    working_directory: *workspace
    docker:
      - image: circleci/android:api-28
    environment:
      TERM: dumb
      _JAVA_OPTIONS: "-Xmx2048m -XX:+UnlockExperimentalVMOptions"
      GRADLE_OPTS: '-Dorg.gradle.jvmargs="-Xmx2048m"'
  gcloud_config: &gcloud_config
    working_directory: *workspace
    docker:
      - image: google/cloud-sdk@sha256:e5e691e48b47a9976c2183edae53531b642ca59f93706c9ef1ff28ecb7e04022
    environment:
      TERM: dumb

  # Google Services

  export_gservices_key: &export_gservices_key
    run:
      name: Export Google Services key environment variable
      command: echo 'export $GOOGLE_SERVICES="$GOOGLE_SERVICES"' >> $BASH_ENV
  decode_gservices_key: &decode_gservices_key
    run:
      name: Decode Google Services key
      command: echo $GOOGLE_SERVICES | base64 -di > app/google-services.json

  # Google Cloud Service

  export_gcloud_key: &export_gcloud_key
    run:
      name: Export Google Cloud Service key environment variable
      command: echo 'export GCLOUD_SERVICE_KEY="$GCLOUD_SERVICE_KEY"' >> $BASH_ENV
  decode_gcloud_key: &decode_gcloud_key
    run:
      name: Decode Google Cloud credentials
      command: echo $GCLOUD_SERVICE_KEY | base64 -di > ${HOME}/client-secret.json


jobs:

  ## Build debug APK and instrumented test APK

  build_debug:
    <<: *android_config
    steps:
      - checkout
      - *restore_cache
      - run:
          name: Download dependencies
          command: chmod a+x gradlew; ./gradlew androidDependencies
      - *save_cache
      - *export_gservices_key
      - *decode_gservices_key
      - run:
          name: Gradle build (debug)
          command: ./gradlew -PdisablePreDex :app:assembleDebug :app:assembleAndroidTest
      - *persist_debug_workspace
      - store_artifacts:
          path: app/build/outputs/apk/
          destination: /apk/
  ## Run unit tests

  test_unit:
    <<: *android_config
    steps:
      - checkout
      - *restore_cache
      - run:
          name: Download dependencies
          command: chmod a+x gradlew;./gradlew androidDependencies
      - *save_cache
      - *export_gservices_key
      - *decode_gservices_key
      - run:
          name: Run unit tests
          command: ./gradlew -PdisablePreDex :app:testDebugUnitTest
      - *persist_debug_workspace
      - store_artifacts:
          path: app/build/reports/
          destination: /reports/
      - store_test_results:
          path: app/build/test-results/
          destination: /test-results/

  ## Run instrumented tests
  test_instrumented:
    <<: *gcloud_config
    steps:
      - *attach_debug_workspace
      - *export_gcloud_key
      - *decode_gcloud_key
      - run:
          name: Set Google Cloud target project
          command: gcloud config set project comicsdbclient-a3fa8
      - run:
          name: Authenticate with Google Cloud
          command: gcloud auth activate-service-account firebase-adminsdk-0x8cx@comicsdbclient-a3fa8.iam.gserviceaccount.com --key-file ${HOME}/client-secret.json
      - run:
          name: Run instrumented test on Firebase Test Lab
          command: gcloud firebase test android run --type instrumentation --app app/build/outputs/apk/debug/app-debug.apk --test app/build/outputs/apk/androidTest/debug/app-debug-androidTest.apk --device model=Nexus5X,version=26,locale=en_US,orientation=portrait --environment-variables coverage=true,coverageFile=/sdcard/tmp/code-coverage/connected/coverage.ec --directories-to-pull=/sdcard/tmp --timeout 20m
      - run:
          name: Create directory to store test results
          command: mkdir firebase
      - run:
          name: Download instrumented test results from Firebase Test Lab
          command: gsutil -m cp -r -U "`gsutil ls gs://test-lab-pdswcvjnp16f2-y37xzrtumnd6x | tail -1`*" /root/workspace/firebase/
      - *persist_firebase_workspace
      - store_artifacts:
          path: firebase/

destination: /firebase/
workflows:
  version: 2
  workflow:
     jobs:
      - build_debug
      #- test_unit
      - test_instrumented:
          requires:
            - build_debug