111

flutter_monisuo/lib/data/services/user_service.dart

@@ -22,14 +22,24 @@ class UserService {
     );
   }
 
-  /// 用户注册
+  /// 用户注册（multipart：含身份证图片和可选推广码）
   Future<ApiResponse<Map<String, dynamic>>> register(
     String username,
-    String password,
-  ) async {
-    return _client.post<Map<String, dynamic>>(
+    String password, {
+    String? referralCode,
+    required Uint8List frontBytes,
+    required Uint8List backBytes,
+  }) async {
+    final formData = FormData.fromMap({
+      'username': username,
+      'password': password,
+      if (referralCode != null && referralCode.isNotEmpty) 'referralCode': referralCode,
+      'front': MultipartFile.fromBytes(frontBytes, filename: 'front.jpg'),
+      'back': MultipartFile.fromBytes(backBytes, filename: 'back.jpg'),
+    });
+    return _client.upload<Map<String, dynamic>>(
       ApiEndpoints.register,
-      data: {'username': username, 'password': password},
+      formData: formData,
     );
   }