fill

lib/features/auth/data/models/user_model.dart

@@ -0,0 +1,81 @@
+import '../../domain/entities/user_entity.dart';
+
+/// User model that extends UserEntity for data layer
+///
+/// Handles JSON serialization/deserialization for API responses
+class UserModel extends UserEntity {
+  const UserModel({
+    required super.userId,
+    required super.username,
+    required super.accessToken,
+    super.refreshToken,
+  });
+
+  /// Create UserModel from JSON response
+  ///
+  /// Expected JSON format from API:
+  /// ```json
+  /// {
+  ///   "AccessToken": "string"
+  /// }
+  /// ```
+  factory UserModel.fromJson(Map<String, dynamic> json, {String? username}) {
+    return UserModel(
+      userId: username ?? 'user', // Use username as userId or default
+      username: username ?? 'user',
+      accessToken: json['AccessToken'] as String,
+      refreshToken: null, // API doesn't provide refresh token
+    );
+  }
+
+  /// Convert UserModel to JSON
+  Map<String, dynamic> toJson() {
+    return {
+      'userId': userId,
+      'username': username,
+      'accessToken': accessToken,
+      'refreshToken': refreshToken,
+    };
+  }
+
+  /// Create UserModel from UserEntity
+  factory UserModel.fromEntity(UserEntity entity) {
+    return UserModel(
+      userId: entity.userId,
+      username: entity.username,
+      accessToken: entity.accessToken,
+      refreshToken: entity.refreshToken,
+    );
+  }
+
+  /// Convert to UserEntity
+  UserEntity toEntity() {
+    return UserEntity(
+      userId: userId,
+      username: username,
+      accessToken: accessToken,
+      refreshToken: refreshToken,
+    );
+  }
+
+  /// Create a copy with modified fields
+  @override
+  UserModel copyWith({
+    String? userId,
+    String? username,
+    String? accessToken,
+    String? refreshToken,
+  }) {
+    return UserModel(
+      userId: userId ?? this.userId,
+      username: username ?? this.username,
+      accessToken: accessToken ?? this.accessToken,
+      refreshToken: refreshToken ?? this.refreshToken,
+    );
+  }
+
+  @override
+  String toString() {
+    return 'UserModel(userId: $userId, username: $username, hasRefreshToken: ${refreshToken != null})';
+  }
+}