import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:geolocator/geolocator.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:motorcycle_dash/core/theme/theme_extensions.dart';
import 'package:motorcycle_dash/features/map/map_screen.dart';
import 'package:motorcycle_dash/services/location_service.dart';
import 'package:motorcycle_dash/services/map/map_provider_interface.dart';
import 'package:motorcycle_dash/services/routes/route_models.dart';
import 'package:motorcycle_dash/services/routes/route_provider.dart';
import 'package:motorcycle_dash/services/routes/route_providers.dart';

class _FakeRouteProvider implements RouteProvider {
  @override
  String get name => 'Fake AWS Provider';

  @override
  Future<List<PlaceSearchResult>> searchPlaces(
    String query, {
    AppLatLng? nearLocation,
  }) async {
    if (query.toLowerCase().contains('blood mountain')) {
      return const [
        PlaceSearchResult(
          providerId: 'place_blood_mtn',
          primaryText: 'Blood Mountain Gap',
          secondaryText: 'US-19 / GA-11, Blairsville, GA',
          latitude: 34.7330,
          longitude: -83.9180,
          formattedAddress: 'Blood Mountain Gap, GA',
        ),
      ];
    }
    return [
      PlaceSearchResult(
        providerId: 'place_gas',
        primaryText: 'Shell Gas Station',
        secondaryText: 'Main St',
        latitude: 34.7200,
        longitude: -83.9100,
        formattedAddress: 'Shell Gas Station, Main St',
      ),
    ];
  }

  @override
  Future<ResolvedPlace> resolvePlace(String placeId) async {
    return const ResolvedPlace(
      providerId: 'place_blood_mtn',
      displayName: 'Blood Mountain Gap',
      formattedAddress: 'Blood Mountain Gap, GA',
      latitude: 34.7330,
      longitude: -83.9180,
    );
  }

  @override
  Future<RouteCalculationResult> calculateRoute(
    List<RouteStop> stops, {
    bool avoidHighways = false,
    bool avoidTolls = false,
    bool avoidFerries = false,
    RoutingOptions? options,
  }) async {
    final geom = [
      AppLatLng(stops.first.latitude, stops.first.longitude),
      const AppLatLng(34.7250, -83.9150),
      AppLatLng(stops.last.latitude, stops.last.longitude),
    ];
    return RouteCalculationResult(
      straightLineDistanceMeters: 12000.0,
      estimatedDistanceMeters: 14500.0,
      estimatedDurationSeconds: 1080,
      geometry: geom,
      isStraightLine: false,
      providerName: name,
      options: options,
      curvatureMetric: 85.0, // Twisty curves
      maneuvers: const [
        RouteManeuver(
          index: 0,
          instruction: 'Depart on GA-60',
          type: ManeuverType.depart,
          distanceMeters: 4500.0,
          durationSeconds: 360,
          location: AppLatLng(34.7200, -83.9100),
        ),
        RouteManeuver(
          index: 1,
          instruction: 'Turn right on US-19 N',
          type: ManeuverType.turnRight,
          distanceMeters: 10000.0,
          durationSeconds: 720,
          location: AppLatLng(34.7250, -83.9150),
        ),
        RouteManeuver(
          index: 2,
          instruction: 'Arrive at Blood Mountain Gap',
          type: ManeuverType.arrive,
          distanceMeters: 0.0,
          durationSeconds: 0,
          location: AppLatLng(34.7330, -83.9180),
        ),
      ],
    );
  }
}

void main() {
  TestWidgetsFlutterBinding.ensureInitialized();

  setUp(() {
    SharedPreferences.setMockInitialValues({});
  });

  Widget buildSubject() {
    return ProviderScope(
      overrides: [
        activeRouteCalculationProvider.overrideWithValue(_FakeRouteProvider()),
        locationStreamProvider.overrideWith((ref) => Stream.value(
              Position(
                latitude: 34.7200,
                longitude: -83.9100,
                timestamp: DateTime.now(),
                accuracy: 5.0,
                altitude: 300.0,
                altitudeAccuracy: 1.0,
                heading: 45.0,
                headingAccuracy: 1.0,
                speed: 15.0,
                speedAccuracy: 0.5,
              ),
            )),
      ],
      child: MaterialApp(
        theme: ThemeData.dark().copyWith(
          extensions: const [MotorSignalThemeColors.dark],
        ),
        home: const MapScreen(),
      ),
    );
  }

  testWidgets('MapScreen destination search autocomplete and route preview flow', (tester) async {
    await tester.binding.setSurfaceSize(const Size(412, 915)); // Google Pixel 8a portrait size
    await tester.pumpWidget(buildSubject());
    await tester.pumpAndSettle();

    // Verify search input is displayed
    final searchField = find.byType(TextField);
    expect(searchField, findsOneWidget);

    // Enter search query
    await tester.enterText(searchField, 'Blood Mountain');
    await tester.pump(const Duration(milliseconds: 400));
    await tester.pumpAndSettle();

    // Verify search results overlay rendered
    expect(find.byKey(const ValueKey('search_results_overlay')), findsOneWidget);
    expect(find.text('Blood Mountain Gap'), findsOneWidget);

    // Tap on search result item
    await tester.tap(find.text('Blood Mountain Gap'));
    await tester.pumpAndSettle();

    // Verify route preview card appears
    expect(find.byKey(const ValueKey('route_preview_card')), findsOneWidget);
    expect(find.textContaining('Twisty Curves'), findsOneWidget);
    expect(find.byKey(const ValueKey('start_navigation_button')), findsOneWidget);

    // Tap "START NAVIGATION"
    await tester.tap(find.byKey(const ValueKey('start_navigation_button')));
    await tester.pumpAndSettle();

    // Verify navigation maneuver card appears on map
    expect(find.byKey(const ValueKey('navigation_maneuver_card')), findsOneWidget);
    expect(find.text('Depart on GA-60'), findsOneWidget);

    // Exit navigation
    await tester.tap(find.byKey(const ValueKey('nav_stop_button')));
    await tester.pumpAndSettle();

    expect(find.byKey(const ValueKey('navigation_maneuver_card')), findsNothing);
  });
}