优化

client/flutter/lib/models/user.dart

@@ -0,0 +1,118 @@
+class User {
+  final String id;
+  final String? email;
+  final String? username;
+  final String? nickname;
+  final String? avatar;
+  final String? discriminator;
+  final bool? temporary;
+  final String? type;
+  final bool? emailVerified;
+  final bool? banned;
+  final Map<String, dynamic>? extra;
+  final DateTime? createdAt;
+
+  User({
+    required this.id,
+    this.email,
+    this.username,
+    this.nickname,
+    this.avatar,
+    this.discriminator,
+    this.temporary,
+    this.type,
+    this.emailVerified,
+    this.banned,
+    this.extra,
+    this.createdAt,
+  });
+
+  factory User.fromJson(Map<String, dynamic> json) {
+    return User(
+      id: (json['_id'] ?? json['id'] ?? '').toString(),
+      email: json['email'],
+      username: json['username'],
+      nickname: json['nickname'],
+      avatar: json['avatar'],
+      discriminator: json['discriminator']?.toString(),
+      temporary: json['temporary'],
+      type: json['type'],
+      emailVerified: json['emailVerified'],
+      banned: json['banned'],
+      extra: json['extra'],
+      createdAt: json['createdAt'] != null
+          ? DateTime.parse(json['createdAt'].toString())
+          : null,
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      '_id': id,
+      'email': email,
+      'username': username,
+      'nickname': nickname,
+      'avatar': avatar,
+      'discriminator': discriminator,
+      'temporary': temporary,
+      'type': type,
+      'emailVerified': emailVerified,
+      'banned': banned,
+      'extra': extra,
+      'createdAt': createdAt?.toIso8601String(),
+    };
+  }
+
+  /// Display name: nickname first, then username, then email prefix
+  String get displayName {
+    if (nickname != null && nickname!.isNotEmpty) return nickname!;
+    if (username != null && username!.isNotEmpty) return username!;
+    if (email != null && email!.isNotEmpty) return email!.split('@').first;
+    return 'User';
+  }
+
+  /// Check if user is a guest/temporary user
+  bool get isGuest => temporary == true;
+
+  /// Role checks - these may come from extra fields or custom logic
+  /// In Tailchat, roles are not built-in; they are managed by the plugin
+  bool get isAdmin {
+    final role = extra?['role'];
+    return role == 'admin' || role == 'super_admin';
+  }
+
+  bool get isSuperAdmin {
+    final role = extra?['role'];
+    return role == 'super_admin';
+  }
+
+  bool get isSales {
+    final role = extra?['role'];
+    return role == 'sales' || role == null;
+  }
+}
+
+/// Tailchat login/register response wraps the user info with a token.
+/// The backend returns the user object directly with a `token` field appended.
+/// The gateway wraps all responses as `{ code, data }`.
+class AuthResponse {
+  final User user;
+  final String token;
+
+  AuthResponse({required this.user, required this.token});
+
+  /// Parse from the gateway response.
+  /// Gateway returns: { "code": 200, "data": { ...userFields..., "token": "jwt..." } }
+  factory AuthResponse.fromJson(Map<String, dynamic> json) {
+    // The gateway wraps response in { code, data }
+    final data = json['data'] ?? json;
+
+    final token = data['token'] ?? '';
+    final user = User.fromJson(data);
+
+    return AuthResponse(
+      user: user,
+      token: token,
+    );
+  }
+}