import 'package:cardash_launcher/data/models/bluetooth_device_info.dart';
import 'package:cardash_launcher/data/models/bluetooth_power_state.dart';
import 'package:cardash_launcher/data/models/gps_speed.dart';
import 'package:cardash_launcher/data/models/location_reading.dart';
import 'package:cardash_launcher/data/models/obd_state.dart';
import 'package:cardash_launcher/data/repositories/settings_repository.dart';
import 'package:cardash_launcher/data/services/telemetry_bridge.dart';
import 'package:cardash_launcher/data/services/weather_service.dart';
import 'package:cardash_launcher/features/home/gps_speed_controller.dart';
import 'package:cardash_launcher/features/home/telemetry_settings_controller.dart';
import 'package:cardash_launcher/features/home/weather_controller.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:shared_preferences/shared_preferences.dart';

class _TelemetryPlatform implements TelemetryPlatform {
  _TelemetryPlatform({this.locationGranted = true});

  bool locationGranted;
  int locationRequests = 0;

  @override
  Future<bool> ensureLocationPermission() async {
    locationRequests++;
    return locationGranted;
  }

  @override
  Future<LocationReading> getLocation() async =>
      const LocationReading(latitude: 1, longitude: 2, place: 'Sofia');

  @override
  Future<List<BluetoothDeviceInfo>> listBondedDevices() async => const [];

  @override
  Future<BluetoothPowerState> bluetoothState() async => BluetoothPowerState.on;

  @override
  Future<bool> ensureBluetoothPermission() async => true;

  @override
  Future<bool> openBluetoothSettings() async => true;

  @override
  Future<void> connectObd(String address) async {}

  @override
  Future<void> disconnectObd() async {}

  @override
  Future<ObdState> getObdState() async => const ObdState();

  @override
  Future<bool> startGpsSpeed() async => false;

  @override
  Future<void> stopGpsSpeed() async {}

  @override
  Future<GpsSpeed> getGpsSpeed() async => const GpsSpeed();
}

class _WeatherService extends WeatherService {
  @override
  Future<double?> temperatureCelsius({
    required double latitude,
    required double longitude,
  }) async => 12;
}

void main() {
  TestWidgetsFlutterBinding.ensureInitialized();

  test('persists source choices and starts weather when needed', () async {
    SharedPreferences.setMockInitialValues({});
    final prefs = await SharedPreferences.getInstance();
    final settings = SettingsRepository(prefs);
    await settings.setTemperatureEnabled(true);
    final weather = WeatherController(
      _TelemetryPlatform(),
      weatherService: _WeatherService(),
    );
    final gps = GpsSpeedController(_TelemetryPlatform());
    final controller = TelemetrySettingsController(settings, weather, gps)
      ..initialize();
    addTearDown(controller.dispose);
    addTearDown(gps.dispose);
    addTearDown(weather.dispose);

    expect(controller.speedEnabled, isTrue);
    expect(controller.speedUseObd, isTrue);
    expect(controller.temperatureEnabled, isTrue);
    expect(controller.temperatureUseObd, isTrue);

    await controller.setSpeedEnabled(false);
    await controller.setSpeedUseObd(false);
    await controller.setTemperatureUseObd(false);

    expect(settings.speedEnabled, isFalse);
    expect(settings.speedUseObd, isFalse);
    expect(settings.temperatureUseObd, isFalse);
    expect(weather.enabled, isTrue);
    expect(weather.hasTemperature, isTrue);
    expect(settings.weatherLocationTemperature, isTrue);
  });

  test('turning temperature off stops and clears the weather poller', () async {
    SharedPreferences.setMockInitialValues({});
    final prefs = await SharedPreferences.getInstance();
    final settings = SettingsRepository(prefs);
    await settings.setTemperatureEnabled(true);
    final weather = WeatherController(
      _TelemetryPlatform(),
      weatherService: _WeatherService(),
    );
    final gps = GpsSpeedController(_TelemetryPlatform());
    final controller = TelemetrySettingsController(settings, weather, gps)
      ..initialize();
    addTearDown(controller.dispose);
    addTearDown(gps.dispose);
    addTearDown(weather.dispose);

    await controller.setTemperatureUseObd(false);
    expect(weather.hasTemperature, isTrue);

    await controller.setTemperatureEnabled(false);

    expect(controller.temperatureEnabled, isFalse);
    expect(settings.temperatureEnabled, isFalse);
    expect(weather.enabled, isFalse);
    expect(weather.hasTemperature, isFalse);
    expect(settings.weatherLocationTemperature, isFalse);
  });

  test(
    'denied location leaves the switch on but reports weather failure',
    () async {
      SharedPreferences.setMockInitialValues({});
      final prefs = await SharedPreferences.getInstance();
      final settings = SettingsRepository(prefs);
      await settings.setTemperatureEnabled(true);
      final weather = WeatherController(
        _TelemetryPlatform(locationGranted: false),
        weatherService: _WeatherService(),
      );
      final gps = GpsSpeedController(_TelemetryPlatform());
      final controller = TelemetrySettingsController(settings, weather, gps)
        ..initialize();
      addTearDown(controller.dispose);
      addTearDown(gps.dispose);
      addTearDown(weather.dispose);

      final granted = await controller.setTemperatureUseObd(false);

      expect(granted, isFalse);
      expect(controller.temperatureUseObd, isFalse);
      expect(weather.enabled, isFalse);
      expect(controller.weatherError, isNotNull);
    },
  );

  test('enabling speed asks for location without an OBD adapter', () async {
    SharedPreferences.setMockInitialValues({});
    final prefs = await SharedPreferences.getInstance();
    final settings = SettingsRepository(prefs);
    await settings.setSpeedEnabled(false);
    final platform = _TelemetryPlatform();
    final weather = WeatherController(platform);
    final gps = GpsSpeedController(platform);
    final controller = TelemetrySettingsController(settings, weather, gps)
      ..initialize();
    addTearDown(controller.dispose);
    addTearDown(gps.dispose);
    addTearDown(weather.dispose);

    final granted = await controller.setSpeedEnabled(true);

    expect(granted, isTrue);
    expect(platform.locationRequests, 1);
    expect(controller.speedEnabled, isTrue);
    expect(settings.speedEnabled, isTrue);
  });

  test('enabling speed does not ask when OBD speed is selected', () async {
    SharedPreferences.setMockInitialValues({});
    final prefs = await SharedPreferences.getInstance();
    final settings = SettingsRepository(prefs);
    await settings.setSpeedEnabled(false);
    await settings.setObdAdapterAddress('AA:BB:CC:DD:EE:FF');
    final platform = _TelemetryPlatform();
    final weather = WeatherController(platform);
    final gps = GpsSpeedController(platform);
    final controller = TelemetrySettingsController(settings, weather, gps)
      ..initialize();
    addTearDown(controller.dispose);
    addTearDown(gps.dispose);
    addTearDown(weather.dispose);

    final granted = await controller.setSpeedEnabled(true);

    expect(granted, isTrue);
    expect(platform.locationRequests, 0);
    expect(controller.speedEnabled, isTrue);
  });

  test('denied location keeps speed on and reports the failure', () async {
    SharedPreferences.setMockInitialValues({});
    final prefs = await SharedPreferences.getInstance();
    final settings = SettingsRepository(prefs);
    await settings.setSpeedEnabled(false);
    final platform = _TelemetryPlatform(locationGranted: false);
    final weather = WeatherController(platform);
    final gps = GpsSpeedController(platform);
    final controller = TelemetrySettingsController(settings, weather, gps)
      ..initialize();
    addTearDown(controller.dispose);
    addTearDown(gps.dispose);
    addTearDown(weather.dispose);

    final granted = await controller.setSpeedEnabled(true);

    expect(granted, isFalse);
    expect(platform.locationRequests, 1);
    expect(controller.speedEnabled, isTrue);
    expect(settings.speedEnabled, isTrue);
  });

  test('choosing GPS speed asks for location while speed is on', () async {
    SharedPreferences.setMockInitialValues({});
    final prefs = await SharedPreferences.getInstance();
    final settings = SettingsRepository(prefs);
    await settings.setObdAdapterAddress('AA:BB:CC:DD:EE:FF');
    final platform = _TelemetryPlatform();
    final weather = WeatherController(platform);
    final gps = GpsSpeedController(platform);
    final controller = TelemetrySettingsController(settings, weather, gps)
      ..initialize();
    addTearDown(controller.dispose);
    addTearDown(gps.dispose);
    addTearDown(weather.dispose);

    final granted = await controller.setSpeedUseObd(false);

    expect(granted, isTrue);
    expect(platform.locationRequests, 1);
    expect(controller.speedUseObd, isFalse);

    expect(await controller.setSpeedUseObd(true), isTrue);
    expect(platform.locationRequests, 1);
  });
}