import 'package:flutter_riverpod/flutter_riverpod.dart';
import '../api/types.dart';
import '../api/client.dart';
import '../api/openapi_config.dart';
import '../services/auth_service.dart';
import '../models/user_profile.dart';
import '../models/delivery_route.dart';
import '../models/delivery.dart';
import '../models/delivery_order.dart';
import '../models/delivery_address.dart';
import '../models/delivery_contact.dart';

final authServiceProvider = Provider<AuthService>((ref) {
  return AuthService();
});

final apiClientProvider = Provider<CqrsApiClient>((ref) {
  return CqrsApiClient(config: ApiClientConfig.production);
});

final isAuthenticatedProvider = FutureProvider<bool>((ref) async {
  final authService = ref.watch(authServiceProvider);
  return await authService.isAuthenticated();
});

final userProfileProvider = FutureProvider<UserProfile?>((ref) async {
  final authService = ref.watch(authServiceProvider);
  final token = await authService.getToken();
  if (token == null) return null;
  return authService.decodeToken(token);
});

final authTokenProvider = FutureProvider<String?>((ref) async {
  final authService = ref.watch(authServiceProvider);
  return await authService.getToken();
});

final deliveryRoutesProvider = FutureProvider<List<DeliveryRoute>>((ref) async {
  // ignore: unused_local_variable
  final client = ref.watch(apiClientProvider);
  final token = ref.watch(authTokenProvider).valueOrNull;

  // TODO: Remove mock data when Keycloak is configured
  if (token == null) {
    return [
      DeliveryRoute(
        id: 1,
        name: 'Route A - Downtown',
        routeFragmentId: 1,
        totalDeliveries: 12,
        completedDeliveries: 5,
        skippedDeliveries: 0,
        createdAt: DateTime.now().subtract(const Duration(days: 1)).toIso8601String(),
      ),
      DeliveryRoute(
        id: 2,
        name: 'Route B - Suburbs',
        routeFragmentId: 2,
        totalDeliveries: 8,
        completedDeliveries: 8,
        skippedDeliveries: 0,
        createdAt: DateTime.now().subtract(const Duration(days: 2)).toIso8601String(),
      ),
      DeliveryRoute(
        id: 3,
        name: 'Route C - Industrial Zone',
        routeFragmentId: 3,
        totalDeliveries: 15,
        completedDeliveries: 3,
        skippedDeliveries: 2,
        createdAt: DateTime.now().subtract(const Duration(days: 3)).toIso8601String(),
      ),
    ];
  }

  // Create a new client with auth token
  final authClient = CqrsApiClient(
    config: ApiClientConfig(
      baseUrl: ApiClientConfig.production.baseUrl,
      defaultHeaders: {'Authorization': 'Bearer $token'},
    ),
  );

  final result = await authClient.executeQuery<List<DeliveryRoute>>(
    endpoint: 'simpleDeliveryRouteQueryItems',
    query: _EmptyQuery(),
    fromJson: (json) {
      final routes = json['items'] as List?;
      return routes?.map((r) => DeliveryRoute.fromJson(r as Map<String, dynamic>)).toList() ?? [];
    },
  );

  return result.whenSuccess((routes) => routes) ?? [];
});

final deliveriesProvider = FutureProvider.family<List<Delivery>, int>((ref, routeFragmentId) async {
  // ignore: unused_local_variable
  final client = ref.watch(apiClientProvider);
  final token = ref.watch(authTokenProvider).valueOrNull;

  // TODO: Remove mock data when Keycloak is configured
  if (token == null) {
    return _getMockDeliveries(routeFragmentId);
  }

  final authClient = CqrsApiClient(
    config: ApiClientConfig(
      baseUrl: ApiClientConfig.production.baseUrl,
      defaultHeaders: {'Authorization': 'Bearer $token'},
    ),
  );

  final result = await authClient.executeQuery<List<Delivery>>(
    endpoint: 'simpleDeliveriesQueryItems',
    query: _DeliveriesQuery(routeFragmentId: routeFragmentId),
    fromJson: (json) {
      final items = json['items'] as List?;
      return items?.map((d) => Delivery.fromJson(d as Map<String, dynamic>)).toList() ?? [];
    },
  );

  return result.whenSuccess((deliveries) => deliveries) ?? [];
});

final languageProvider = StateProvider<String>((ref) {
  return 'fr';
});

// Mock data generator for testing without authentication
List<Delivery> _getMockDeliveries(int routeFragmentId) {
  final mockDeliveries = <Delivery>[];

  for (int i = 1; i <= 6; i++) {
    final isDelivered = i <= 2;
    mockDeliveries.add(
      Delivery(
        id: i,
        routeFragmentId: routeFragmentId,
        deliveryIndex: i,
        orders: [
          DeliveryOrder(
            id: i * 100,
            isNewCustomer: i == 3,
            totalAmount: 150.0 + (i * 10),
            totalItems: 3 + i,
            contacts: [
              DeliveryContact(
                firstName: 'Client',
                lastName: 'Name$i',
                fullName: 'Client Name $i',
                phoneNumber: '+212${i}23456789',
              ),
            ],
            contact: DeliveryContact(
              firstName: 'Client',
              lastName: 'Name$i',
              fullName: 'Client Name $i',
              phoneNumber: '+212${i}23456789',
            ),
          ),
        ],
        deliveryAddress: DeliveryAddress(
          id: i,
          line1: 'Street $i',
          line2: 'Building ${i * 10}',
          postalCode: '3000${i.toString().padLeft(2, '0')}',
          city: 'Casablanca',
          subdivision: 'Casablanca-Settat',
          countryCode: 'MA',
          latitude: 33.5731 + (i * 0.01),
          longitude: -7.5898 + (i * 0.01),
          formattedAddress: 'Street $i, Building ${i * 10}, Casablanca, Morocco',
        ),
        delivered: isDelivered,
        isSkipped: false,
        hasBeenSkipped: false,
        deliveredAt: isDelivered ? DateTime.now().subtract(Duration(hours: i)).toIso8601String() : null,
        name: 'Delivery #${routeFragmentId}-$i',
        createdAt: DateTime.now().subtract(Duration(days: 1)).toIso8601String(),
        updatedAt: DateTime.now().toIso8601String(),
      ),
    );
  }

  return mockDeliveries;
}

class _EmptyQuery implements Serializable {
  @override
  Map<String, Object?> toJson() => {};
}

class _DeliveriesQuery implements Serializable {
  final int routeFragmentId;

  _DeliveriesQuery({required this.routeFragmentId});

  @override
  Map<String, Object?> toJson() => {
    'params': {
      'routeFragmentId': routeFragmentId,
    },
  };
}