import 'package:flutter/foundation.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'road_alert_models.dart';
import 'road_alert_provider_interface.dart';
import 'tomtom_road_alert_provider.dart';
import 'community_traffic_provider.dart';
import 'mock_road_alert_provider.dart';

final tomtomProviderInstance = Provider<TomTomRoadAlertProvider>((ref) {
  return TomTomRoadAlertProvider();
});

final communityProviderInstance = Provider<CommunityTrafficRoadAlertProvider>((ref) {
  final endpoint = ref.watch(communityEndpointUrlProvider);
  return CommunityTrafficRoadAlertProvider(endpointUrl: endpoint);
});

final mockProviderInstance = Provider<MockRoadAlertProvider>((ref) {
  return MockRoadAlertProvider();
});

// Master Enable
class RoadAlertsEnabledNotifier extends StateNotifier<bool> {
  static const _key = 'road_alerts_enabled';
  RoadAlertsEnabledNotifier() : super(true) {
    _load();
  }
  Future<void> _load() async {
    final prefs = await SharedPreferences.getInstance();
    if (!mounted) return;
    state = prefs.getBool(_key) ?? true;
  }
  Future<void> setEnabled(bool enabled) async {
    state = enabled;
    final prefs = await SharedPreferences.getInstance();
    await prefs.setBool(_key, enabled);
  }
}
final roadAlertsEnabledProvider =
    StateNotifierProvider<RoadAlertsEnabledNotifier, bool>((ref) {
  return RoadAlertsEnabledNotifier();
});

// Audio Alerts Toggle
class AudioAlertsEnabledNotifier extends StateNotifier<bool> {
  static const _key = 'audio_alerts_enabled';
  AudioAlertsEnabledNotifier() : super(true) {
    _load();
  }
  Future<void> _load() async {
    final prefs = await SharedPreferences.getInstance();
    if (!mounted) return;
    state = prefs.getBool(_key) ?? true;
  }
  Future<void> setEnabled(bool enabled) async {
    state = enabled;
    final prefs = await SharedPreferences.getInstance();
    await prefs.setBool(_key, enabled);
  }
}
final audioAlertsEnabledProvider =
    StateNotifierProvider<AudioAlertsEnabledNotifier, bool>((ref) {
  return AudioAlertsEnabledNotifier();
});

// Alert Radius in Meters
class AlertRadiusMetersNotifier extends StateNotifier<double> {
  static const _key = 'alert_radius_meters';
  AlertRadiusMetersNotifier() : super(804.7) {
    _load();
  }
  Future<void> _load() async {
    final prefs = await SharedPreferences.getInstance();
    if (!mounted) return;
    state = prefs.getDouble(_key) ?? 804.7;
  }
  Future<void> setRadius(double radiusMeters) async {
    state = radiusMeters;
    final prefs = await SharedPreferences.getInstance();
    await prefs.setDouble(_key, radiusMeters);
  }
}
final alertRadiusMetersProvider =
    StateNotifierProvider<AlertRadiusMetersNotifier, double>((ref) {
  return AlertRadiusMetersNotifier();
});

// Category Filtering Notifier
class EnabledCategoriesNotifier extends StateNotifier<Set<RoadAlertCategory>> {
  EnabledCategoriesNotifier()
      : super({
          RoadAlertCategory.police,
          RoadAlertCategory.speedCamera,
          RoadAlertCategory.accident,
          RoadAlertCategory.hazard,
          RoadAlertCategory.roadClosure,
          RoadAlertCategory.construction,
          RoadAlertCategory.traffic,
          RoadAlertCategory.other,
        });

  void toggleCategory(RoadAlertCategory category, bool enabled) {
    final current = Set<RoadAlertCategory>.from(state);
    if (enabled) {
      current.add(category);
    } else {
      current.remove(category);
    }
    state = current;
  }
}
final enabledCategoriesProvider =
    StateNotifierProvider<EnabledCategoriesNotifier, Set<RoadAlertCategory>>((ref) {
  return EnabledCategoriesNotifier();
});

// TomTom API Key
class TomTomApiKeyNotifier extends StateNotifier<String> {
  static const _key = 'tomtom_api_key';
  TomTomApiKeyNotifier() : super('') {
    _load();
  }
  Future<void> _load() async {
    final prefs = await SharedPreferences.getInstance();
    if (!mounted) return;
    state = prefs.getString(_key) ?? '';
  }
  Future<void> setApiKey(String apiKey) async {
    state = apiKey.trim();
    final prefs = await SharedPreferences.getInstance();
    await prefs.setString(_key, state);
  }
}
final tomtomApiKeyProvider =
    StateNotifierProvider<TomTomApiKeyNotifier, String>((ref) {
  return TomTomApiKeyNotifier();
});

// Community Traffic API Key
class CommunityApiKeyNotifier extends StateNotifier<String> {
  static const _key = 'community_api_key';
  static const String defaultKey = 'wz_live_RqKTtZ10oK3db9hH-ypQhD0tOTLn199q';

  CommunityApiKeyNotifier() : super(defaultKey) {
    _load();
  }
  Future<void> _load() async {
    final prefs = await SharedPreferences.getInstance();
    if (!mounted) return;
    state = prefs.getString(_key) ?? defaultKey;
  }
  Future<void> setApiKey(String apiKey) async {
    state = apiKey.trim().isEmpty ? defaultKey : apiKey.trim();
    final prefs = await SharedPreferences.getInstance();
    await prefs.setString(_key, state);
  }
}
final communityApiKeyProvider =
    StateNotifierProvider<CommunityApiKeyNotifier, String>((ref) {
  return CommunityApiKeyNotifier();
});

// Custom Community Endpoint URL
class CommunityEndpointUrlNotifier extends StateNotifier<String> {
  static const _key = 'community_endpoint_url';
  CommunityEndpointUrlNotifier() : super('') {
    _load();
  }
  Future<void> _load() async {
    final prefs = await SharedPreferences.getInstance();
    if (!mounted) return;
    state = prefs.getString(_key) ?? '';
  }
  Future<void> setEndpoint(String url) async {
    state = url.trim();
    final prefs = await SharedPreferences.getInstance();
    await prefs.setString(_key, state);
  }
}
final communityEndpointUrlProvider =
    StateNotifierProvider<CommunityEndpointUrlNotifier, String>((ref) {
  return CommunityEndpointUrlNotifier();
});

final tomtomStatusProvider = StateProvider<RoadAlertProviderStatus>((ref) {
  final key = ref.watch(tomtomApiKeyProvider);
  return key.isEmpty ? RoadAlertProviderStatus.notConfigured : RoadAlertProviderStatus.configured;
});

final communityStatusProvider = StateProvider<RoadAlertProviderStatus>((ref) {
  final key = ref.watch(communityApiKeyProvider);
  return key.isEmpty ? RoadAlertProviderStatus.notConfigured : RoadAlertProviderStatus.configured;
});

// Active Providers List
final activeRoadAlertProviders = Provider<List<RoadAlertProvider>>((ref) {
  final tomtomKey = ref.watch(tomtomApiKeyProvider);
  final communityKey = ref.watch(communityApiKeyProvider);
  final list = <RoadAlertProvider>[];

  if (tomtomKey.isNotEmpty) {
    list.add(ref.watch(tomtomProviderInstance));
  }
  if (communityKey.isNotEmpty) {
    list.add(ref.watch(communityProviderInstance));
  }

  // Include Debug Mock Provider only in debug mode
  if (kDebugMode) {
    list.add(ref.watch(mockProviderInstance));
  }

  return list;
});