import 'dart:convert';
import 'package:dio/dio.dart';
import '../../../core/api/api_client.dart';
import '../../../core/storage/token_store.dart';

class AppUser {
  final String id;
  final String phone;
  final String? name;
  final String role;

  AppUser({required this.id, required this.phone, this.name, required this.role});

  factory AppUser.fromJson(Map<String, dynamic> j) => AppUser(
        id: j['id'] as String,
        phone: (j['phone'] ?? '') as String,
        name: j['name'] as String?,
        role: (j['role'] ?? 'rider') as String,
      );

  Map<String, dynamic> toJson() => {
        'id': id,
        'phone': phone,
        'name': name,
        'role': role,
      };
}

class AuthRepository {
  final ApiClient _api;
  final TokenStore _store;

  AuthRepository(this._api, this._store);

  Future<void> sendOtp(String phone) async {
    await _api.dio.post('/auth/send-otp', data: {'phone': phone});
  }

  Future<AppUser> verify(String phone, String code) async {
    final r = await _api.dio.post(
      '/auth/verify-otp',
      data: {'phone': phone, 'code': code},
    );
    await _store.save(
      r.data['access_token'] as String,
      r.data['refresh_token'] as String,
    );
    final user = AppUser.fromJson(Map<String, dynamic>.from(r.data['user'] as Map));
    await _store.saveUser(jsonEncode(user.toJson()));
    return user;
  }

  Future<AppUser?> getCachedUser() async {
    final raw = await _store.readUser();
    if (raw == null || raw.isEmpty) return null;
    try {
      final map = jsonDecode(raw) as Map<String, dynamic>;
      return AppUser.fromJson(map);
    } catch (_) {
      return null;
    }
  }

  Future<bool> hasSavedToken() => _store.hasToken();

  Future<AppUser?> me() async {
    try {
      final r = await _api.dio.get('/users/me');
      final user = AppUser.fromJson(Map<String, dynamic>.from(r.data as Map));
      await _store.saveUser(jsonEncode(user.toJson()));
      return user;
    } on DioException {
      return getCachedUser();
    }
  }

  Future<void> logout() => _store.clear();

  Future<AppUser> updateName(String name) async {
    final r = await _api.dio.patch('/users/me', data: {'name': name});
    final user = AppUser.fromJson(Map<String, dynamic>.from(r.data as Map));
    await _store.saveUser(jsonEncode(user.toJson()));
    return user;
  }
}