name: Android - Build and test
on:
    # Build whenever a file that affects Android is changed in a pull request
    pull_request:
        paths:
            - .github/workflows/android-app.yml
            - android/**
            - mullvad-api/**
            - mullvad-daemon/**
            - mullvad-jni/**
            - mullvad-paths/**
            - mullvad-problem-report/**
            - mullvad-types/**
            - talpid-core/**
            - talpid-platform-metadata/**
            - talpid-types/**
            - talpid-types/**
            - wireguard/**
            - Cargo.toml
            - build-apk.sh
            - update-api-metadata.sh
            - update-version-metadata.sh
            - version-metadata.sh
    # Build if requested manually from the Actions tab
    workflow_dispatch:
jobs:
    build:
        runs-on: ubuntu-latest
        steps:
            - name: Checkout repository
              uses: actions/checkout@v2

            - name: Calculate native lib cache hash
              id: native-lib-cache-hash
              shell: bash
              run: |
                non_android_hash="$(git grep --cached -l '' -- ':!android/' | xargs -d '\n' sha1sum | sha1sum | awk '{print $1}')"
                echo "::set-output name=native_lib_hash::$non_android_hash"

            - name: Cache native libraries
              uses: actions/cache@v2
              id: cache-native-libs
              with:
                path: |
                  ./android/app/build/extraJni
                  ./dist-assets/relays.json
                  ./dist-assets/api-ip-address.txt
                key: android-native-libs-${{ runner.os }}-x86_64-${{ steps.native-lib-cache-hash.outputs.native_lib_hash }}

            - name: Configure Rust
              if: steps.cache-native-libs.outputs.cache-hit != 'true'
              uses: actions-rs/toolchain@v1.0.6
              with:
                  toolchain: stable
                  target: x86_64-linux-android
                  default: true

            - name: Configure Go
              if: steps.cache-native-libs.outputs.cache-hit != 'true'
              uses: actions/setup-go@v2.1.3
              with:
                  go-version: 1.16

            - name: Configure Android NDK
              if: steps.cache-native-libs.outputs.cache-hit != 'true'
              id: install-android-ndk
              uses: nttld/setup-ndk@v1
              with:
                  ndk-version: r20b

            - name: Bind Cargo with NDK
              if: steps.cache-native-libs.outputs.cache-hit != 'true'
              run: |
                cat >> $HOME/.cargo/config << EOF
                [target.x86_64-linux-android]
                ar = "${{ steps.install-android-ndk.outputs.ndk-path }}/toolchains/llvm/prebuilt/linux-x86_64/bin/x86_64-linux-android-ar"
                linker = "${{ steps.install-android-ndk.outputs.ndk-path }}/toolchains/llvm/prebuilt/linux-x86_64/bin/x86_64-linux-android21-clang"
                EOF

            - name: Build native libraries
              if: steps.cache-native-libs.outputs.cache-hit != 'true'
              env:
                RUSTFLAGS: --deny warnings
                NDK_TOOLCHAIN_DIR: ${{ steps.install-android-ndk.outputs.ndk-path }}/toolchains/llvm/prebuilt/linux-x86_64/bin
                AR_x86_64_linux_android: ${{ steps.install-android-ndk.outputs.ndk-path }}/toolchains/llvm/prebuilt/linux-x86_64/bin/x86_64-linux-android-ar
                CC_x86_64_linux_android: ${{ steps.install-android-ndk.outputs.ndk-path }}/toolchains/llvm/prebuilt/linux-x86_64/bin/x86_64-linux-android21-clang
                ABI: x86_64
                TARGET: x86_64-linux-android
                BUILD_TYPE: debug
              run: |
                ARCHITECTURES="$ABI"
                UNSTRIPPED_LIB_PATH="./target/$TARGET/$BUILD_TYPE/libmullvad_jni.so"
                STRIPPED_LIB_PATH="./android/app/build/extraJni/$ABI/libmullvad_jni.so"
                NDK_TOOLCHAIN_STRIP_TOOL="$NDK_TOOLCHAIN_DIR/x86_64-linux-android-strip"
                ./wireguard/build-wireguard-go.sh --android --no-docker
                source env.sh $TARGET
                cargo build --target $TARGET --verbose --package mullvad-jni
                cargo run --bin relay_list > dist-assets/relays.json
                $NDK_TOOLCHAIN_STRIP_TOOL --strip-debug --strip-unneeded -o "$STRIPPED_LIB_PATH" "$UNSTRIPPED_LIB_PATH"

            - name: Configure Android SDK
              uses: maxim-lobanov/setup-android-tools@v1
              with:
                  packages: |
                      platforms;android-30
                      build-tools;30.0.3
                  cache: true

            - name: Build Android app
              uses: burrunan/gradle-cache-action@v1
              with:
                job-id: jdk8
                arguments: assembleDebug
                gradle-version: wrapper
                build-root-directory: android

            - name: Run unit tests
              uses: burrunan/gradle-cache-action@v1
              with:
                job-id: jdk8
                arguments: testDebugUnitTest
                gradle-version: wrapper
                build-root-directory: android
                execution-only-caches: true

            - name: Assemble instrumented test apk
              uses: burrunan/gradle-cache-action@v1
              with:
                job-id: jdk8
                arguments: assembleAndroidTest
                gradle-version: wrapper
                build-root-directory: android
                execution-only-caches: true

            - name: Upload apks
              uses: actions/upload-artifact@v2
              with:
                name: apks
                path: android/app/build/outputs/apk
                if-no-files-found: error
                retention-days: 1

    instrumented-tests:
        name: Instrumented tests
        runs-on: macos-latest
        timeout-minutes: 30
        needs:
          - build
        strategy:
            fail-fast: false
        steps:
            - name: Checkout repository
              uses: actions/checkout@v2

            - uses: actions/download-artifact@v2
              with:
                name: apks

            - name: AVD cache
              uses: actions/cache@v2
              id: avd-cache
              with:
                path: |
                  ~/.android/avd/*
                  ~/.android/adb*
                key: emulator-api-29

            - name: Create avd and generate snapshot
              uses: reactivecircus/android-emulator-runner@v2
              if: steps.avd-cache.outputs.cache-hit != 'true'
              with:
                force-avd-creation: false
                api-level: 29
                arch: x86_64
                emulator-options: -no-window -gpu swiftshader_indirect -noaudio -no-boot-anim -camera-back none
                disable-animations: true
                profile: pixel
                script: echo "Generated AVD snapshot for caching."
              env:
                API_LEVEL: 29

            - name: Run Android instrumented tests
              uses: reactivecircus/android-emulator-runner@v2
              with:
                force-avd-creation: false
                api-level: 29
                arch: x86_64
                emulator-options: -no-snapshot-save -no-window -gpu swiftshader_indirect -noaudio -no-boot-anim -camera-back none
                disable-animations: true
                profile: pixel
                script: ./ci/run-android-instrumented-tests.sh $(pwd)
              env:
                API_LEVEL: 29