import 'package:get_storage/get_storage.dart';
import '../../../core/utils/logger.dart';

class User {
  // 单例实例
  static User? _instance;

  /// 安全地检查用户是否已经登录（即单例是否已初始化）
  static bool isLoggedIn() {
    return _instance != null;
  }

  // 单例访问器（增加空安全保护）
  static User get instance {
    if (_instance == null) {
      throw Exception("User must be initialized first");
    }
    return _instance!;
  }

  // --- 新增 ---
  /// 清理所有与用户会话相关的数据
  static Future<void> clearUserSession() async {
    final GetStorage storage = GetStorage();
    // 1. 清理本地存储
    await storage.remove('logintoken');
    await storage.remove('user_info');
    // 2. 清理内存中的单例
    _instance = null;
    Logger.i("User", "用户会话数据已安全清理。");
  }

  // 最终属性（不可变）
  String name;
  String uid;
  String avatar;
  String language;
  String token;
  String mail;
  String phone;
  String phonemac;
  String password;
  int viplv = 0; //添加会员等级字段,0表示普通用户

  List<UserDevice> devices;

  // 私有构造函数
  User._({
    required this.name,
    required this.uid,
    required this.avatar,
    required this.language,
    required this.token,
    required this.mail,
    required this.phone,
    required this.phonemac,
    required this.password,
    required this.viplv,
    required this.devices,
  });

  factory User.fromJson(Map<String, dynamic> json) {
    // 修复1：安全获取嵌套的 user 字段
    final userData = json['user'] as Map<String, dynamic>?; // 允许空值
    final devicesData = json['devices'] as List<dynamic>?; // 允许空值
    //final token = json['data']['token'] as String? ?? '';
    //final token = '';
    // 更新单例实例
    return _instance = User._(
      token: '',
      //token: token as String? ?? '',
      name: (userData?['name'] as String?) ?? '默认名称', // 提供默认值
      uid: (userData?['uid'] as String?) ?? '',
      avatar: (userData?['avatar'] as String?) ?? '',

      language: (userData?['language'] as String?) ?? 'en',

      mail: (userData?['mail'] as String?) ?? '',
      phone: (userData?['phone'] as String?) ?? '',
      phonemac: (userData?['phonemac'] as String?) ?? '',
      password: (userData?['password'] as String?) ?? '',
      viplv: (userData?['viplv'] as int?) ?? 0, // 提供默认值
      devices: devicesData
              ?.map((e) => UserDevice.fromJson(e as Map<String, dynamic>))
              .toList() ??
          [], // 处理设备列表
    );
  }
  factory User.fronTokenJson(Map<String, dynamic> json) {
    // 修复1：安全获取嵌套的 user 字段
    final userData = json['user'] as Map<String, dynamic>?; // 允许空值
    final devicesData = json['devices'] as List<dynamic>?; // 允许空值
    print("数据获取fronTokenJson$userData $devicesData");
    // 更新单例实例
    return _instance = User._(
      token: '',
      name: (userData?['name'] as String?) ?? '默认名称', // 提供默认值
      uid: (userData?['uid'] as String?) ?? '',
      avatar: (userData?['avatar'] as String?) ?? '',
      language: (userData?['language'] as String?) ?? 'en',

      mail: (userData?['mail'] as String?) ?? '',
      phone: (userData?['phone'] as String?) ?? '',
      phonemac: (userData?['phonemac'] as String?) ?? '',
      password: (userData?['password'] as String?) ?? '',
      viplv: (userData?['viplv'] as int?) ?? 0, // 提供默认值
      devices: devicesData != null
          ? (devicesData)
              .map((e) => UserDevice.fromJson(e as Map<String, dynamic>))
              .toList()
          : [], // 处理设备列表
    );
  }

  // 完整的JSON序列化
  Map<String, dynamic> toJson() => {
        'user': {
          'name': name,
          'uid': uid,
          'avatar': avatar,
          'language': language,
          'token': token,
          'mail': mail,
          'phone': phone,
          'phonemac': phonemac,
          'password': password,
          'viplv': viplv,
          'devices': devices.map((device) => device.toJson()).toList(),
        },
      };

  // 添加设备
  addUserDevice(UserDevice device) {
    devices.add(device);
  }

  // 查找设备
  removeUserDevice(int id) {
    devices.removeWhere((device) => device.id == id);
  }
}

class UserDevice {
  int id;
  String uid;
  int devicetype;
  String devicename;
  String devicemac;
  String license;
  UserDevice({
    required this.id,
    required this.uid,
    required this.devicetype,
    required this.devicename,
    required this.devicemac,
    required this.license,
  });

  factory UserDevice.fromJson(Map<String, dynamic> json) => UserDevice(
        id: json['id'] as int,
        uid: json['uid'] as String,
        devicetype: (json['devicetype'] as num).toInt(),
        devicename: json['devicename'] as String,
        devicemac: json['devicemac'] as String,
        license: json['license'] as String,
      );

  toJson() => {
        'id': id,
        'uid': uid,
        'devicetype': devicetype,
        'devicename': devicename,
        'devicemac': devicemac,
        'license': license,
      };
}