import 'package:finlytic_app/core/network/api_client.dart';
import 'package:finlytic_app/features/admin/models/admin_user_model.dart';
import 'package:finlytic_app/features/admin/models/admin_create_user_request_dto.dart';
import 'package:finlytic_app/features/admin/models/admin_update_user_request_dto.dart';
import 'package:finlytic_app/features/admin/models/service_setting_dto.dart';

class AdminRepository {
  final ApiClient apiClient;

  const AdminRepository({required this.apiClient});

  Future<List<AdminUserModel>> fetchUsers() async {
    try {
      final res = await apiClient.get('/api/v1/admin/users');
      if (res.statusCode == 200 && res.data != null) {
        final List<dynamic> data = res.data;
        return data.map((json) => AdminUserModel.fromJson(json)).toList();
      }
      return [];
    } catch (e) {
      throw Exception('Nutzer konnten nicht geladen werden: $e');
    }
  }

  Future<void> createUser(AdminCreateUserRequestDto dto) async {
    final res = await apiClient.post('/api/v1/admin/users', data: dto.toJson());
    if (res.statusCode != 200 && res.statusCode != 201) {
      throw Exception('Erstellen fehlgeschlagen');
    }
  }

  Future<void> updateUser(String id, AdminUpdateUserRequestDto dto) async {
    final res = await apiClient.put('/api/v1/admin/users/$id', data: dto.toJson());
    if (res.statusCode != 200) {
      throw Exception('Aktualisieren fehlgeschlagen');
    }
  }

  Future<Map<String, List<ServiceSettingDto>>> fetchSettings() async {
    final res = await apiClient.get('/api/v1/admin/settings');
    if (res.statusCode == 200 && res.data != null && res.data is Map<String, dynamic>) {
      final map = res.data as Map<String, dynamic>;
      final result = <String, List<ServiceSettingDto>>{};
      map.forEach((k, v) {
        if (v is List) {
          result[k] = v
              .whereType<Map<String, dynamic>>()
              .map((item) => ServiceSettingDto.fromJson(item))
              .toList();
        }
      });
      return result;
    }
    return {};
  }

  Future<void> updateServiceSettings(String serviceName, Map<String, dynamic> settings) async {
    final res = await apiClient.put('/api/v1/admin/settings/$serviceName', data: settings);
    if (res.statusCode != 200 && res.statusCode != 204) {
      throw Exception('Einstellungen konnten nicht gespeichert werden');
    }
  }
}