import 'dart:developer';

import 'package:dio/dio.dart';
import '../../features/auth/models/auth_token.dart';
import '../../features/auth/models/auth_credentials.dart';
import '../../data/models/user.dart';
import '../../core/errors/exceptions.dart';

class AuthService {
  final Dio _dio;

  AuthService(this._dio);

  Future<AuthToken> login(AuthCredentials credentials) async {
    try {
      final response = await _dio.post(
        '/auth/login',
        data: credentials.toJson(),
      );
      
      if (response.statusCode == 200) {
        return AuthToken.fromJson(response.data);
      } else {
        throw AuthException('Login failed');
      }
    } on DioException catch (e) {
      if (e.response?.statusCode == 401) {
        throw AuthException('Invalid credentials');
      }
      throw NetworkException('Network error during login');
    } catch (e) {
      throw UnexpectedException('Unexpected error during login: ${e.toString()}');
    }
  }

  Future<AuthToken> refreshToken(String refreshToken) async {
    try {
      final response = await _dio.post(
        '/auth/refresh',
        data: {'refresh_token': refreshToken},
      );
      
      if (response.statusCode == 200) {
        return AuthToken.fromJson(response.data);
      } else {
        throw AuthException('Token refresh failed');
      }
    } catch (e) {
      throw AuthException('Failed to refresh token: ${e.toString()}');
    }
  }

  Future<void> logout(String refreshToken) async {
    try {
      await _dio.post(
        '/auth/logout',
        data: {'refresh_token': refreshToken},
      );
    } catch (e) {
      // We might want to just log this error rather than throwing,
      // as logout should succeed even if the server call fails
      log('Logout error: ${e.toString()}');
    }
  }

  Future<User> getUserProfile() async {
    try {
      final response = await _dio.get('/auth/profile');
      
      if (response.statusCode == 200) {
        return User.fromJson(response.data);
      } else {
        throw AuthException('Failed to get user profile');
      }
    } catch (e) {
      throw AuthException('Error fetching user profile: ${e.toString()}');
    }
  }
}