---
name: Android - Build and test
on:
  pull_request:
    paths:
      - '**'
      - '!.github/workflows/**'
      - '.github/workflows/android-app.yml'
      - '!.github/CODEOWNERS'
      - '!audits/**'
      - '!build.sh'
      - '!build-windows-modules.sh'
      - '!ci/**'
      - '!code-owners.json'
      - '!dist-assets/**'
      - '!docs/**'
      - '!graphics/**'
      - '!desktop/**'
      - '!ios/**'
      - '!mullvad-cli/**'
      - '!mullvad-exclude/**'
      - '!mullvad-ios/**'
      - '!mullvad-nsis/**'
      - '!mullvad-setup/**'
      - '!mullvad-update/**'
      - '!scripts/**'
      - '!talpid-dbus/**'
      - '!talpid-macos/**'
      - '!talpid-windows/**'
      - '!test/**'
      - '!windows/**'
      - '!windows-installer/**'
      - '!**/**.md'
      - '!**/osv-scanner.toml'
  schedule:
    # At 00:00 UTC every day.
    # Notifications for scheduled workflows are sent to the user who last modified the cron
    # syntax in the workflow file. If you update this you must have notifications for
    # Github Actions enabled, so these don't go unnoticed.
    # https://docs.github.com/en/actions/monitoring-and-troubleshooting-workflows/notifications-for-workflow-runs
    - cron: '0 0 * * *'
  workflow_dispatch:
    inputs:
      override_container_image:
        description: Override container image
        type: string
        required: false
      run_firebase_tests:
        description: Run firebase tests
        type: boolean
        required: false
      mockapi_test_repeat:
        description: Mockapi test repeat (self hosted)
        default: '1'
        required: true
        type: string
      e2e_test_repeat:
        description: e2e test repeat (self hosted)
        default: '0'
        required: true
        type: string
      e2e_tests_infra_flavor:
        description: >
          Infra environment to run e2e tests on (prod/stagemole).
          If set to 'stagemole' test-related artefacts will be uploaded.
        default: 'stagemole'
        required: true
        type: string
      android_build_runner:
        description: 'Choose which runner to use'
        required: true
        default: 'android-build'
        type: choice
        options:
          - android-build
          - android-bender-01
          - android-bender-02
          - android-bender-03
          - android-bender-04
          - android-bender-05
      clean:
        description: Clean before building.
        type: boolean
        required: false
  # Build if main is updated to ensure up-to-date caches are available
  push:
    branches: [main]

permissions: {}

env:
  DEFAULT_E2E_REPEAT: 0
  SCHEDULE_E2E_REPEAT: 10

jobs:
  prepare:
    name: Prepare
    runs-on: ["${{ inputs.android_build_runner || 'android-build' }}"]
    steps:
      - name: Checkout repository
        uses: actions/checkout@v6.0.1
        with:
          submodules: true

      - name: Use custom container image if specified
        if: ${{ github.event.inputs.override_container_image != '' }}
        run: echo "inner_container_image=${{ github.event.inputs.override_container_image }}"
          >> $GITHUB_ENV

      - name: Use default container image and resolve digest
        if: ${{ github.event.inputs.override_container_image == '' }}
        run: |
          echo "inner_container_image=$(cat ./building/android-container-image.txt)" >> $GITHUB_ENV

      # Preparing variables this way instead of using `env.*` due to:
      # https://github.com/orgs/community/discussions/26388
      - name: Prepare environment variables
        run: |
          echo "INNER_E2E_TEST_INFRA_FLAVOR=${{ github.event.inputs.e2e_tests_infra_flavor || 'stagemole' }}" \
          >> $GITHUB_ENV
          echo "INNER_E2E_TEST_REPEAT=${{ github.event.inputs.e2e_test_repeat ||
          (github.event_name == 'schedule' && env.SCHEDULE_E2E_REPEAT) ||
          env.DEFAULT_E2E_REPEAT }}" \
          >> $GITHUB_ENV
    outputs:
      container_image: ${{ env.inner_container_image }}
      E2E_TEST_INFRA_FLAVOR: ${{ env.INNER_E2E_TEST_INFRA_FLAVOR }}
      E2E_TEST_REPEAT: ${{ env.INNER_E2E_TEST_REPEAT }}

  build-app:
    name: Build app
    needs: [prepare]
    runs-on: ["${{ inputs.android_build_runner || 'android-build' }}"]
    steps:
      - name: Checkout repository
        uses: actions/checkout@v6.0.1

      - name: Fetch submodules
        run: |
          git submodule update --init android/rust-android-gradle-plugin

      - name: Ensure correct container image is used
        run: echo "${{ needs.prepare.outputs.container_image }}" > ./building/android-container-image.txt

      - name: Clean gradle
        if: github.event.inputs.clean == 'true'
        run: >
          ./building/container-run.sh android android/gradlew -p android --console plain --stacktrace --no-daemon
          clean

      - name: Prepare build tasks
        id: build-tasks
        run: |
          tasks=":app:assembleOssProdDebug assembleOssProdAndroidTest :test:mockapi:assemble"
          if [[ "${{ needs.prepare.outputs.E2E_TEST_REPEAT }}" != '0' ]]; then
            tasks+=" :app:assemblePlayStagemoleDebug :test:e2e:assemble"
          fi
          echo "tasks=$tasks" >> $GITHUB_OUTPUT

      - name: Build apks
        run: >
          ./building/container-run.sh android android/gradlew -p android --console plain --stacktrace --no-daemon
          "${{ steps.build-tasks.outputs.tasks }}"

      - name: Upload apks
        uses: actions/upload-artifact@v4
        with:
          name: apks
          path: android/**/*.apk
          if-no-files-found: error
          retention-days: 7

  run-lint-and-tests:
    name: Run lint and test tasks
    needs: [prepare]
    runs-on: ["${{ inputs.android_build_runner || 'android-build' }}"]
    container:
      image: ${{ needs.prepare.outputs.container_image }}
      volumes:
        # node is symlinked in, w/o mounting it, when using a image node won't be found for the
        # checkout action
        # https://github.com/NixOS/nixpkgs/issues/306373
        - /nix:/nix
        - gradle-cache:/root/.gradle
    strategy:
      fail-fast: false
      matrix:
        include:
          - gradle-task: testAllUnitTests
          - gradle-task: :test:arch:test --rerun-tasks
          - gradle-task: detekt
          - gradle-task: lint
    steps:
      - name: Checkout repository
        uses: actions/checkout@v6.0.1
        with:
          submodules: true

      - name: Run gradle task
        run: android/gradlew -p android --stacktrace --no-daemon ${{ matrix.gradle-task }}

  instrumented-tests:
    name: Run instrumented tests
    runs-on: [self-hosted, android-device]
    needs: [build-app]
    strategy:
      fail-fast: false
      matrix:
        include:
          - test-type: app
            path: android/app/build/outputs/apk
            test-repeat: 1
          - test-type: mockapi
            path: android/test/mockapi/build/outputs/apk
            test-repeat: ${{ github.event_name == 'schedule' && 40 || github.event.inputs.mockapi_test_repeat || 1 }}
    steps:
      - name: Prepare report dir
        if: ${{ matrix.test-repeat != 0 }}
        id: prepare-report-dir
        env:
          INNER_REPORT_DIR: /tmp/${{ matrix.test-type }}-${{ github.run_id }}-${{ github.run_attempt }}
        run: |
          mkdir -p $INNER_REPORT_DIR
          echo "report_dir=$INNER_REPORT_DIR" >> $GITHUB_OUTPUT

      - name: Checkout repository
        if: ${{ matrix.test-repeat != 0 }}
        uses: actions/checkout@v6.0.1
        with:
          submodules: true

      - uses: actions/download-artifact@v4
        if: ${{ matrix.test-repeat != 0 }}
        with:
          name: apks
          path: android

      - name: Calculate timeout
        id: calculate-timeout
        run: echo "timeout=$(( ${{ matrix.test-repeat }} * 10 ))" >> $GITHUB_OUTPUT
        shell: bash

      - name: Run instrumented test script
        if: ${{ matrix.test-repeat != 0 }}
        timeout-minutes: ${{ fromJSON(steps.calculate-timeout.outputs.timeout) }}
        shell: bash -ieo pipefail {0}
        env:
          AUTO_FETCH_TEST_HELPER_APKS: true
          TEST_TYPE: ${{ matrix.test-type }}
          BILLING_FLAVOR: oss
          INFRA_FLAVOR: prod
          REPORT_DIR: ${{ steps.prepare-report-dir.outputs.report_dir }}
        run: ./android/scripts/run-instrumented-tests-repeat.sh ${{ matrix.test-repeat }}

      - name: Upload instrumentation report (${{ matrix.test-type }})
        uses: actions/upload-artifact@v4
        if: always() && matrix.test-repeat != 0
        with:
          name: ${{ matrix.test-type }}-instrumentation-report
          path: ${{ steps.prepare-report-dir.outputs.report_dir }}
          if-no-files-found: ignore
          retention-days: 7

  instrumented-e2e-tests:
    name: Run instrumented e2e tests
    runs-on: [self-hosted, android-device]
    needs: [prepare, build-app]
    if: needs.prepare.outputs.E2E_TEST_REPEAT != '0'
    steps:
      - name: Resolve unique runner test account secret name
        if: needs.prepare.outputs.E2E_TEST_INFRA_FLAVOR == 'prod'
        run: |
          echo "RUNNER_SECRET_NAME=ANDROID_PROD_TEST_ACCOUNT_$(echo $RUNNER_NAME | tr '[:lower:]-' '[:upper:]_')" \
          >> $GITHUB_ENV

      - name: Resolve runner test account
        if: needs.prepare.outputs.E2E_TEST_INFRA_FLAVOR == 'prod'
        run: echo "RESOLVED_TEST_ACCOUNT=${{ secrets[env.RUNNER_SECRET_NAME] }}" >> $GITHUB_ENV

      - name: Prepare report dir
        id: prepare-report-dir
        env:
          INNER_REPORT_DIR: /tmp/${{ github.run_id }}-${{ github.run_attempt }}
        run: |
          mkdir -p $INNER_REPORT_DIR
          echo "report_dir=$INNER_REPORT_DIR" >> $GITHUB_OUTPUT

      - name: Checkout repository
        uses: actions/checkout@v6.0.1
        with:
          submodules: true

      - uses: actions/download-artifact@v4
        with:
          name: apks
          path: android

      - name: Calculate timeout
        id: calculate-timeout
        run: echo "timeout=$(( ${{ needs.prepare.outputs.E2E_TEST_REPEAT }} * 20 ))" >> $GITHUB_OUTPUT
        shell: bash

      - name: Run instrumented test script
        timeout-minutes: ${{ fromJSON(steps.calculate-timeout.outputs.timeout) }}
        shell: bash -ieo pipefail {0}
        env:
          AUTO_FETCH_TEST_HELPER_APKS: true
          TEST_TYPE: e2e
          BILLING_FLAVOR: ${{ needs.prepare.outputs.E2E_TEST_INFRA_FLAVOR == 'prod' && 'oss' || 'play' }}
          INFRA_FLAVOR: "${{ needs.prepare.outputs.E2E_TEST_INFRA_FLAVOR }}"
          PARTNER_AUTH: |-
            ${{ needs.prepare.outputs.E2E_TEST_INFRA_FLAVOR == 'stagemole' && secrets.STAGEMOLE_PARTNER_AUTH || '' }}
          VALID_TEST_ACCOUNT_NUMBER: ${{ env.RESOLVED_TEST_ACCOUNT }}
          INVALID_TEST_ACCOUNT_NUMBER: '0000000000000000'
          ENABLE_BILLING_TESTS: true
          ENABLE_HIGHLY_RATE_LIMITED_TESTS: ${{ github.event_name == 'schedule' && 'true' || 'false' }}
          ENABLE_RAAS_TESTS: true
          RAAS_HOST: '192.168.105.1'
          RAAS_TRAFFIC_GENERATOR_TARGET_HOST: '45.83.223.209'
          RAAS_TRAFFIC_GENERATOR_TARGET_PORT: '80'
          REPORT_DIR: ${{ steps.prepare-report-dir.outputs.report_dir }}
        run: ./android/scripts/run-instrumented-tests-repeat.sh ${{ needs.prepare.outputs.E2E_TEST_REPEAT }}

      - name: Upload e2e instrumentation report
        uses: actions/upload-artifact@v4
        if: >
          always() && needs.prepare.outputs.E2E_TEST_INFRA_FLAVOR == 'stagemole'
        with:
          name: e2e-instrumentation-report
          path: ${{ steps.prepare-report-dir.outputs.report_dir }}

  firebase-tests:
    name: Run firebase tests
    if: github.event.inputs.run_firebase_tests == 'true'
    runs-on: ubuntu-latest
    timeout-minutes: 30
    needs: [build-app]
    env:
      FIREBASE_ENVIRONMENT_VARIABLES: "\
        clearPackageData=true,\
        runnerBuilder=de.mannodermaus.junit5.AndroidJUnit5Builder,\
        invalid_test_account_number=0000000000000000,\
        ENABLE_HIGHLY_RATE_LIMITED_TESTS=${{ github.event_name == 'schedule' && 'true' || 'false' }},\
        partner_auth=${{ secrets.STAGEMOLE_PARTNER_AUTH }},\
        ENABLE_RAAS_TESTS=false"
    strategy:
      fail-fast: false
      matrix:
        include:
          - test-type: mockapi
            arg-spec-file: mockapi-oss.yml
            path: android/test/mockapi/build/outputs/apk
          - test-type: e2e
            arg-spec-file: e2e-play-stagemole.yml
            path: android/test/e2e/build/outputs/apk
    steps:
      - name: Checkout repository
        uses: actions/checkout@v6.0.1
        with:
          submodules: true

      - uses: actions/download-artifact@v4
        with:
          name: apks
          path: android

      - name: Run tests on Firebase Test Lab
        uses: asadmansr/Firebase-Test-Lab-Action@v1.0
        env:
          SERVICE_ACCOUNT: ${{ secrets.FIREBASE_SERVICE_ACCOUNT }}
        with:
          arg-spec: |
            android/test/firebase/${{ matrix.arg-spec-file }}:default
            --environment-variables ${{ env.FIREBASE_ENVIRONMENT_VARIABLES }}