初始化

lib/hj_model/user/wallet_model.dart

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+/// 钱包信息，来自 /mine/wallet
+class WalletModel {
+  // ===== 收益 =====
+  int? income; //收益金币的整数部分
+  double? incomePot; //收益金币的零头，和 income 一起算总收益
+  num? vidIncome; //视频收益
+
+  // ===== 余额 =====
+  int? amount; //充值金币余额，购买后会被写回
+  int? integral; //积分
+
+  // ===== 剩余次数 =====
+  int? downloadCount; //视频下载次数
+  int? aiUndressFreeTimes; //AI 脱衣免费次数
+  int? todayAiFreeTimes; //今日 AI 免费次数
+
+  //字段顺序与上方声明一致，便于比对
+  WalletModel.fromJson(Map<String, dynamic>? json) {
+    json ??= {};
+    income = json['income'];
+    //后端可能下发 double / int / 数字字符串，统一按字符串解析。
+    //解析不了、或拿到 NaN/Infinity 都留 null 当没零头——balance 的 `~/` 吃到它们会抛 UnsupportedError
+    final pot = double.tryParse('${json['incomePot'] ?? 0}');
+    incomePot = pot != null && pot.isFinite ? pot : null;
+    vidIncome = json['vidIncome'];
+    amount = json['amount'];
+    integral = json['integral'];
+    downloadCount = json['downloadCount'];
+    aiUndressFreeTimes = json['aiUndressFreeTimes'];
+    todayAiFreeTimes = json['todayAiFreeTimes'];
+  }
+
+  //收益总额：先放大 100 倍算再取整，避免 double 直接相加的精度误差
+  int get balance => ((income ?? 0) * 100.0 + (incomePot ?? 0) * 100) ~/ 100;
+}