import 'dart:convert';
import 'package:flutter/material.dart';
import 'package:shared_preferences/shared_preferences.dart';

class BizAttr {
  final String? mobileRedirectUrl;
  final String? webRedirectUrl;

  BizAttr({this.mobileRedirectUrl, this.webRedirectUrl});

  factory BizAttr.fromJson(Map<String, dynamic>? json) {
    if (json == null) return BizAttr();
    return BizAttr(
      mobileRedirectUrl: json['mobileRedirectUrl'] as String?,
      webRedirectUrl: json['webRedirectUrl'] as String?,
    );
  }

  Map<String, dynamic> toJson() => {
    'mobileRedirectUrl': mobileRedirectUrl,
    'webRedirectUrl': webRedirectUrl,
  };
}

class UserData {
  final String? id;
  final String? userId;
  final String? username;
  final String? name;
  final String? corpinfoId;
  final String? corpinfoName;
  final int? mainCorpFlag;
  final int? userType;
  final String? departmentId;
  final String? departmentName;
  final String? postId;
  final String? postName;
  final String? roleId;
  final String? email;
  final String? personnelType;
  final String? personnelTypeName;
  final String? nation;
  final String? nationName;
  final String? userIdCard;
  final String? userAvatarUrl;
  final String? currentAddress;
  final String? locationAddress;
  final dynamic rankLevel;
  final String? rankLevelName;
  final String? phone;
  final int? sort;
  final int? version;
  final String? createId;
  final String? createName;
  final String? createTime;
  final String? updateId;
  final String? updateName;
  final String? updateTime;
  final String? remarks;
  final String? deleteEnum;
  final String? tenantId;
  final String? orgId;
  final String? env;
  final int? departmentLeaderFlag;
  final int? deputyLeaderFlag;
  final String? culturalLevel;
  final String? culturalLevelName;
  final String? maritalStatus;
  final String? maritalStatusName;
  final String? politicalAffiliation;
  final String? politicalAffiliationName;
  final String? mappingName;
  final String? mappingUserName;
  final String? mappingPostName;
  final String? mappingDeptName;
  final dynamic employmentFlag;

  UserData({
    this.id,
    this.userId,
    this.username,
    this.name,
    this.corpinfoId,
    this.corpinfoName,
    this.mainCorpFlag,
    this.userType,
    this.departmentId,
    this.departmentName,
    this.postId,
    this.postName,
    this.roleId,
    this.email,
    this.personnelType,
    this.personnelTypeName,
    this.nation,
    this.nationName,
    this.userIdCard,
    this.userAvatarUrl,
    this.currentAddress,
    this.locationAddress,
    this.rankLevel,
    this.rankLevelName,
    this.phone,
    this.sort,
    this.version,
    this.createId,
    this.createName,
    this.createTime,
    this.updateId,
    this.updateName,
    this.updateTime,
    this.remarks,
    this.deleteEnum,
    this.tenantId,
    this.orgId,
    this.env,
    this.departmentLeaderFlag,
    this.deputyLeaderFlag,
    this.culturalLevel,
    this.culturalLevelName,
    this.maritalStatus,
    this.maritalStatusName,
    this.politicalAffiliation,
    this.politicalAffiliationName,
    this.mappingName,
    this.mappingUserName,
    this.mappingPostName,
    this.mappingDeptName,
    this.employmentFlag,
  });

  factory UserData.fromJson(Map<String, dynamic> json) {
    return UserData(
      id: json['id']?.toString(),
      userId: json['userId']?.toString(),
      username: json['username'] as String?,
      name: json['name'] as String?,
      corpinfoId: json['corpinfoId']?.toString(),
      corpinfoName: json['corpinfoName'] as String?,
      mainCorpFlag: json['mainCorpFlag'] as int?,
      userType: json['userType'] as int?,
      departmentId: json['departmentId']?.toString(),
      departmentName: json['departmentName'] as String?,
      postId: json['postId']?.toString(),
      postName: json['postName'] as String?,
      roleId: json['roleId']?.toString(),
      email: json['email'] as String?,
      personnelType: json['personnelType'] as String?,
      personnelTypeName: json['personnelTypeName'] as String?,
      nation: json['nation'] as String?,
      nationName: json['nationName'] as String?,
      userIdCard: json['userIdCard'] as String?,
      userAvatarUrl: json['userAvatarUrl'] as String?,
      currentAddress: json['currentAddress'] as String?,
      locationAddress: json['locationAddress'] as String?,
      rankLevel: json['rankLevel'],
      rankLevelName: json['rankLevelName'] as String?,
      phone: json['phone'] as String?,
      sort: json['sort'] as int?,
      version: json['version'] as int?,
      createId: json['createId']?.toString(),
      createName: json['createName'] as String?,
      createTime: json['createTime'] as String?,
      updateId: json['updateId']?.toString(),
      updateName: json['updateName'] as String?,
      updateTime: json['updateTime'] as String?,
      remarks: json['remarks'] as String?,
      deleteEnum: json['deleteEnum'] as String?,
      tenantId: json['tenantId']?.toString(),
      orgId: json['orgId']?.toString(),
      env: json['env'] as String?,
      departmentLeaderFlag: json['departmentLeaderFlag'] as int?,
      deputyLeaderFlag: json['deputyLeaderFlag'] as int?,
      culturalLevel: json['culturalLevel'] as String?,
      culturalLevelName: json['culturalLevelName'] as String?,
      maritalStatus: json['maritalStatus'] as String?,
      maritalStatusName: json['maritalStatusName'] as String?,
      politicalAffiliation: json['politicalAffiliation'] as String?,
      politicalAffiliationName: json['politicalAffiliationName'] as String?,
      mappingName: json['mappingName'] as String?,
      mappingUserName: json['mappingUserName'] as String?,
      mappingPostName: json['mappingPostName'] as String?,
      mappingDeptName: json['mappingDeptName'] as String?,
      employmentFlag: json['employmentFlag'],
    );
  }

  Map<String, dynamic> toJson() {
    return {
      'id': id,
      'userId': userId,
      'username': username,
      'name': name,
      'corpinfoId': corpinfoId,
      'corpinfoName': corpinfoName,
      'mainCorpFlag': mainCorpFlag,
      'userType': userType,
      'departmentId': departmentId,
      'departmentName': departmentName,
      'postId': postId,
      'postName': postName,
      'roleId': roleId,
      'email': email,
      'personnelType': personnelType,
      'personnelTypeName': personnelTypeName,
      'nation': nation,
      'nationName': nationName,
      'userIdCard': userIdCard,
      'userAvatarUrl': userAvatarUrl,
      'currentAddress': currentAddress,
      'locationAddress': locationAddress,
      'rankLevel': rankLevel,
      'rankLevelName': rankLevelName,
      'phone': phone,
      'sort': sort,
      'version': version,
      'createId': createId,
      'createName': createName,
      'createTime': createTime,
      'updateId': updateId,
      'updateName': updateName,
      'updateTime': updateTime,
      'remarks': remarks,
      'deleteEnum': deleteEnum,
      'tenantId': tenantId,
      'orgId': orgId,
      'env': env,
      'departmentLeaderFlag': departmentLeaderFlag,
      'deputyLeaderFlag': deputyLeaderFlag,
      'culturalLevel': culturalLevel,
      'culturalLevelName': culturalLevelName,
      'maritalStatus': maritalStatus,
      'maritalStatusName': maritalStatusName,
      'politicalAffiliation': politicalAffiliation,
      'politicalAffiliationName': politicalAffiliationName,
      'mappingName': mappingName,
      'mappingUserName': mappingUserName,
      'mappingPostName': mappingPostName,
      'mappingDeptName': mappingDeptName,
      'employmentFlag': employmentFlag,
    };
  }
}

class SessionService {
  SessionService._();

  static final SessionService instance = SessionService._();

  // 新接口返回的用户数据
  UserData? userData;

  // 原有的认证相关字段（保留用于兼容性）
  String? token;
  String? accessTicket;
  String? refreshTicket;
  String? expireIn;
  String? refreshExpiresIn;

  // 自加字段
  String? loginPhone;
  String? loginPass;

  // 内部：Prefs key
  static const String _prefsKey = 'session_service_v2';

  // ---------- helpers ----------
  bool get isLoggedIn => token != null && userData?.userId != null && token!.isNotEmpty;

  // 兼容性getter - 映射到新字段
  String? get userId => userData?.userId;
  String? get accountId => userData?.id;
  String? get name => userData?.name;
  String? get userName => userData?.username;
  String? get phone => userData?.phone;
  String? get email => userData?.email;
  String? get tenantId => userData?.tenantId;
  String? get orgId => userData?.orgId;
  String? get departmentId => userData?.departmentId;
  String? get departmentName => userData?.departmentName;
  String? get roleId => userData?.roleId;
  String? get userTypeEnum => userData?.userType?.toString();

  /// 如果未登录则跳转登录页
  void loginSession(BuildContext context) {
    if (!isLoggedIn) {
      Navigator.pushReplacementNamed(context, '/login');
    }
  }

  /// 清空内存并清除本地存储
  Future<void> clear({bool clearPrefs = true}) async {
    userData = null;
    token = null;
    accessTicket = null;
    refreshTicket = null;
    expireIn = null;
    refreshExpiresIn = null;
    loginPhone = null;
    loginPass = null;

    if (clearPrefs) {
      await clearPrefsData();
    }
  }

  // ---------- json serialization ----------
  factory SessionService.fromJson(Map<String, dynamic> json) {
    final s = SessionService._();

    // 解析用户数据
    if (json['userData'] != null) {
      s.userData = UserData.fromJson(json['userData'] as Map<String, dynamic>);
    }

    // 解析认证字段
    s.token = json['token'] as String?;
    s.accessTicket = json['accessTicket'] as String?;
    s.refreshTicket = json['refreshTicket'] as String?;
    s.expireIn = json['expireIn'] as String?;
    s.refreshExpiresIn = json['refreshExpiresIn'] as String?;
    s.loginPhone = json['loginPhone'] as String?;
    s.loginPass = json['loginPass'] as String?;

    return s;
  }

  Map<String, dynamic> toJson() {
    return {
      'userData': userData?.toJson(),
      'token': token,
      'accessTicket': accessTicket,
      'refreshTicket': refreshTicket,
      'expireIn': expireIn,
      'refreshExpiresIn': refreshExpiresIn,
      'loginPhone': loginPhone,
      'loginPass': loginPass,
    };
  }

  // ---------- update helpers ----------

  /// 从完整的API响应更新会话数据
  void updateFromApiResponse(Map<String, dynamic> responseJson) {
    if (responseJson['data'] != null) {
      userData = UserData.fromJson(responseJson['data'] as Map<String, dynamic>);
    }
    // 注意：token可能需要从响应头或其他地方单独设置
  }

  /// 从JSON更新会话数据（兼容旧版本）
  void updateFromJson(Map<String, dynamic> json) {
    final newSession = SessionService.fromJson(json);
    // 将 newSession 的值复制到单例 instance
    final i = SessionService.instance;
    i.userData = newSession.userData;
    i.token = newSession.token;
    i.accessTicket = newSession.accessTicket;
    i.refreshTicket = newSession.refreshTicket;
    i.expireIn = newSession.expireIn;
    i.refreshExpiresIn = newSession.refreshExpiresIn;
    i.loginPhone = newSession.loginPhone;
    i.loginPass = newSession.loginPass;
  }

  // ---------- persistence ----------
  Future<void> saveToPrefs() async {
    final prefs = await SharedPreferences.getInstance();
    final jsonStr = jsonEncode(toJson());
    await prefs.setString(_prefsKey, jsonStr);
  }

  Future<bool> loadFromPrefs() async {
    final prefs = await SharedPreferences.getInstance();
    final jsonStr = prefs.getString(_prefsKey);
    if (jsonStr == null || jsonStr.isEmpty) return false;
    try {
      final Map<String, dynamic> map = jsonDecode(jsonStr) as Map<String, dynamic>;
      updateFromJson(map);
      return true;
    } catch (_) {
      return false;
    }
  }

  Future<void> clearPrefsData() async {
    final prefs = await SharedPreferences.getInstance();
    await prefs.remove(_prefsKey);
  }

  // ---------- convenience setters ----------
  void setToken(String t) => token = t;
  void setLoginPhone(String phone) => loginPhone = phone;
  void setLoginPass(String pass) => loginPass = pass;

  // ---------- 打印用户信息（调试用） ----------
  void printUserInfo() {
    if (userData != null) {
      print('用户ID: ${userData!.userId}');
      print('用户名: ${userData!.username}');
      print('姓名: ${userData!.name}');
      print('部门: ${userData!.departmentName}');
      print('租户ID: ${userData!.tenantId}');
    }
  }
}

// ---------- example usage ----------
// 在登录成功后：
//   SessionService.instance.updateFromApiResponse(responseJson);
//   SessionService.instance.setToken('从响应头获取的token'); // 如果需要
//   await SessionService.instance.saveToPrefs();
//
// 程序启动时尝试恢复：
//   await SessionService.instance.loadFromPrefs();