/// ============================================================
/// 【UserModel】用户相关模型
///
/// CurrentUserExtension：GET /api/v1/User/GetCurrentUserExtension 的响应体，
/// 对齐 Vue 端 api/user/type.ts 的 CurrentUserExtension 全部字段（17 个）。
///
/// 一、为什么字段全都要：
///   登录后要缓存这套信息（user_storage.dart 里存 JSON），
///   "我的"页 / 任务页都可能用到，缺一个就得多调一次接口。
///
/// 二、高频坑：
///   1. fromJson 全部 ?? 兜底，服务端缺字段/类型漂移不会闪崩；
///   2. 数字统一 (json['x'] as num?)?.toInt()，防 int/double 不一致；
///   3. toJson 与 fromJson 必须成对，否则缓存/回填会丢字段。
/// ============================================================
class CurrentUserExtension {
  const CurrentUserExtension({
    this.userId = 0,
    this.userName = '',
    this.userPoints = 0.0,
    this.levelName = '',
    this.avatar = '',
    this.className = '',
    this.classId = 0,
    this.gradeLevel = '',
    this.graduationYear = 0,
    this.targetConfigId = 0,
    this.targetConfigName = '',
    this.userAvatarStatus = 0,
    this.userAvatarReason = '',
    this.isShowGuide = false,
    this.isShowReport = false,
    this.isShowAfterReport = false,
    this.id = 0,
  });

  final int userId;
  final String userName;
  final double userPoints;
  final String levelName;
  final String avatar;
  final String className;
  final int classId;
  final String gradeLevel;
  final int graduationYear;
  final int targetConfigId;
  final String targetConfigName;
  final int userAvatarStatus;
  final String userAvatarReason;
  final bool isShowGuide;
  final bool isShowReport;

  /// 是否显示出门测试报告（默认 false，后端置 true 后，用户完成报告查看后置回 false）
  final bool isShowAfterReport;
  final int id;

  /// JSON → 对象（服务器响应）
  ///
  /// 两个兼容点（对齐接口真实返回 {code, message, data: {...}}）：
  ///   1. data 包装：data 存在就取 data，直接返回 {userId,...} 也支持；
  ///   2. 字符串数字：后端 userId/classId 返回的是字符串
  ///      （"820466383020136"），不能直接 as num，用 _toInt 统一转换。
  factory CurrentUserExtension.fromJson(Map<String, dynamic> json) {
    final payload = (json['data'] as Map<String, dynamic>?) ?? json;
    return CurrentUserExtension(
      userId: _toInt(payload['userId']),
      userName: payload['userName'] as String? ?? '',
      userPoints: _toDouble(payload['userPoints']),
      levelName: payload['levelName'] as String? ?? '',
      avatar: payload['avatar'] as String? ?? '',
      className: payload['className'] as String? ?? '',
      classId: _toInt(payload['classId']),
      gradeLevel: payload['gradeLevel'] as String? ?? '',
      graduationYear: _toInt(payload['graduationYear']),
      targetConfigId: _toInt(payload['targetConfigId']),
      targetConfigName: payload['targetConfigName'] as String? ?? '',
      userAvatarStatus: _toInt(payload['userAvatarStatus']),
      userAvatarReason: payload['userAvatarReason'] as String? ?? '',
      isShowGuide: payload['isShowGuide'] as bool? ?? false,
      isShowReport: payload['isShowReport'] as bool? ?? false,
      isShowAfterReport: payload['isShowAfterReport'] as bool? ?? false,
      id: _toInt(payload['id']),
    );
  }

  /// 对象 → JSON（写入本地缓存）
  Map<String, dynamic> toJson() {
    return {
      'userId': userId,
      'userName': userName,
      'userPoints': userPoints,
      'levelName': levelName,
      'avatar': avatar,
      'className': className,
      'classId': classId,
      'gradeLevel': gradeLevel,
      'graduationYear': graduationYear,
      'targetConfigId': targetConfigId,
      'targetConfigName': targetConfigName,
      'userAvatarStatus': userAvatarStatus,
      'userAvatarReason': userAvatarReason,
      'isShowGuide': isShowGuide,
      'isShowReport': isShowReport,
      'isShowAfterReport': isShowAfterReport,
      'id': id,
    };
  }

  /// 局部更新（目前只用得上 avatar / isShowReport / isShowAfterReport）
  CurrentUserExtension copyWith({
    String? avatar,
    bool? isShowReport,
    bool? isShowAfterReport,
  }) {
    return CurrentUserExtension(
      userId: userId,
      userName: userName,
      userPoints: userPoints,
      levelName: levelName,
      avatar: avatar ?? this.avatar,
      className: className,
      classId: classId,
      gradeLevel: gradeLevel,
      graduationYear: graduationYear,
      targetConfigId: targetConfigId,
      targetConfigName: targetConfigName,
      userAvatarStatus: userAvatarStatus,
      userAvatarReason: userAvatarReason,
      isShowGuide: isShowGuide,
      isShowReport: isShowReport ?? this.isShowReport,
      isShowAfterReport: isShowAfterReport ?? this.isShowAfterReport,
      id: id,
    );
  }
}

/// 用户积分等级（GET /api/v1/User/GetUserPointLevel，备用）
class UserPointLevel {
  const UserPointLevel({
    this.userId = 0,
    this.totalPoints = 0,
    this.level = 0,
    this.levelPoints = 0,
    this.levelMaxPoints = 0,
    this.levelUpPoints = 0,
  });

  final int userId;
  final int totalPoints;
  final int level;
  final int levelPoints;
  final int levelMaxPoints;
  final int levelUpPoints;

  factory UserPointLevel.fromJson(Map<String, dynamic> json) {
    return UserPointLevel(
      userId: (json['userId'] as num?)?.toInt() ?? 0,
      totalPoints: (json['totalPoints'] as num?)?.toInt() ?? 0,
      level: (json['level'] as num?)?.toInt() ?? 0,
      levelPoints: (json['levelPoints'] as num?)?.toInt() ?? 0,
      levelMaxPoints: (json['levelMaxPoints'] as num?)?.toInt() ?? 0,
      levelUpPoints: (json['levelUpPoints'] as num?)?.toInt() ?? 0,
    );
  }
}

/// 兼容"字符串数字"（后端 userId/classId 返回 "820466383020136"）
int _toInt(dynamic v) {
  if (v is num) return v.toInt();
  if (v is String) return int.tryParse(v) ?? 0;
  return 0;
}

/// 兼容小数积分（后端 userPoints 返回 105.5）
double _toDouble(dynamic v) {
  if (v is num) return v.toDouble();
  if (v is String) return double.tryParse(v) ?? 0;
  return 0;
}