#!/usr/bin/env bash
# Originally written by Maurice McCabe <[email protected]>, but placed in the public domain.

# Run Flutter integration tests on android device (or emulator)

show_help() {
    printf "\n\nusage: $0 package test

Utility for running integration tests for pre-installed flutter app on android device.
(app must be built in debug mode with 'enableFlutterDriverExtension()')

where:
    package
        name of package to run, eg, com.example.flutterapp
    test
        path of test to run, eg, test_driver/main_test.dart
"
    exit 1
}

run_test() {
    # note: assumes debug apk installed on device
    package_name=$1
    test_path=$2

    echo Starting Flutter app $package_name in debug mode...

    # stop app on device
    # (if running locally or started incorrectly by CI/CD)
    adb shell am force-stop $package_name

    # clear log (to avoid picking up any earlier observatory announcements on local re-runs)
    # (could comment out if running in CI/CD)
    adb logcat -c

    # start app on device
    adb shell am start -a android.intent.action.RUN -f 0x20000000 --ez enable-background-compilation true --ez enable-dart-profiling true --ez enable-checked-mode true $package_name/$package_name.MainActivity

    # wait for observatory startup on device and get port number
    obs_str=`adb logcat -e "Observatory listening on" -m 1`
    obs_port=`echo $obs_str | grep -Eo '([0-9]+)/$'`
    obs_port=${obs_port%?}
    echo Observatory on port $obs_port

    # forward a local port to observatory port on device
    forwarded_port=`adb forward tcp:0 tcp:$obs_port`
#    forwarded_port=4723 # re-use appium server port for now
#    adb forward tcp:$forwarded_port tcp:$obs_port
    echo Local port $forwarded_port forwarded to observatory port $obs_port

    # run test
    echo Running integration test $test_path on app $package_name ...
    pub get # may be required when running in CI/CD
    export VM_SERVICE_URL=http://127.0.0.1:$forwarded_port
    dart $test_path
#    flutter driver --use-existing-app=http://127.0.0.1:$forwarded_port --no-keep-app-running lib/main.dart

}

# if no arguments passed
if [[ -z $1  || -z $2 ]]; then show_help; fi

run_test $1 $2