fix: collect imports for enums in separate files

pubspec.lock

@@ -125,10 +125,10 @@ packages:
     dependency: transitive
     description:
       name: characters
-      sha256: f71061c654a3380576a52b451dd5532377954cf9dbd272a78fc8479606670803
+      sha256: faf38497bda5ead2a8c7615f4f7939df04333478bf32e4173fcb06d428b5716b
       url: "https://pub.dev"
     source: hosted
-    version: "1.4.0"
+    version: "1.4.1"
   charcode:
     dependency: transitive
     description:
@@ -205,10 +205,10 @@ packages:
     dependency: transitive
     description:
       name: coverage
-      sha256: "9086475ef2da7102a0c0a4e37e1e30707e7fb7b6d28c209f559a9c5f8ce42016"
+      sha256: "5da775aa218eaf2151c721b16c01c7676fbfdd99cebba2bf64e8b807a28ff94d"
       url: "https://pub.dev"
     source: hosted
-    version: "1.12.0"
+    version: "1.15.0"
   crypto:
     dependency: transitive
     description:
@@ -445,14 +445,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.0.5"
-  js:
-    dependency: transitive
-    description:
-      name: js
-      sha256: "53385261521cc4a0c4658fd0ad07a7d14591cf8fc33abbceae306ddb974888dc"
-      url: "https://pub.dev"
-    source: hosted
-    version: "0.7.2"
   json_annotation:
     dependency: transitive
     description:
@@ -529,18 +521,18 @@ packages:
     dependency: transitive
     description:
       name: matcher
-      sha256: dc58c723c3c24bf8d3e2d3ad3f2f9d7bd9cf43ec6feaa64181775e60190153f2
+      sha256: "12956d0ad8390bbcc63ca2e1469c0619946ccb52809807067a7020d57e647aa6"
       url: "https://pub.dev"
     source: hosted
-    version: "0.12.17"
+    version: "0.12.18"
   material_color_utilities:
     dependency: transitive
     description:
       name: material_color_utilities
-      sha256: f7142bb1154231d7ea5f96bc7bde4bda2a0945d2806bb11670e30b850d56bdec
+      sha256: "9c337007e82b1889149c82ed242ed1cb24a66044e30979c44912381e9be4c48b"
       url: "https://pub.dev"
     source: hosted
-    version: "0.11.1"
+    version: "0.13.0"
   meta:
     dependency: transitive
     description:
@@ -918,26 +910,26 @@ packages:
     dependency: transitive
     description:
       name: test
-      sha256: "75906bf273541b676716d1ca7627a17e4c4070a3a16272b7a3dc7da3b9f3f6b7"
+      sha256: "54c516bbb7cee2754d327ad4fca637f78abfc3cbcc5ace83b3eda117e42cd71a"
       url: "https://pub.dev"
     source: hosted
-    version: "1.26.3"
+    version: "1.29.0"
   test_api:
     dependency: transitive
     description:
       name: test_api
-      sha256: ab2726c1a94d3176a45960b6234466ec367179b87dd74f1611adb1f3b5fb9d55
+      sha256: "93167629bfc610f71560ab9312acdda4959de4df6fac7492c89ff0d3886f6636"
       url: "https://pub.dev"
     source: hosted
-    version: "0.7.7"
+    version: "0.7.9"
   test_core:
     dependency: transitive
     description:
       name: test_core
-      sha256: "0cc24b5ff94b38d2ae73e1eb43cc302b77964fbf67abad1e296025b78deb53d0"
+      sha256: "394f07d21f0f2255ec9e3989f21e54d3c7dc0e6e9dbce160e5a9c1a6be0e2943"
       url: "https://pub.dev"
     source: hosted
-    version: "0.6.12"
+    version: "0.6.15"
   typed_data:
     dependency: transitive
     description:

vaden/example/lib/src/controllers/order_controller.dart

@@ -0,0 +1,28 @@
+import 'package:example/src/dtos/order_dto.dart';
+import 'package:example/src/enums/order_status.dart';
+import 'package:vaden/vaden.dart';
+
+@Api(tag: 'orders', description: 'Order operations')
+@Controller('/orders')
+class OrderController {
+  @Get('/')
+  List<OrderDto> getAll() {
+    return [
+      OrderDto(
+        id: '1',
+        status: OrderStatus.pending,
+        history: [OrderStatus.pending],
+      ),
+    ];
+  }
+
+  @Get('/by-status/<status>')
+  List<OrderDto> getByStatus(@Param() String status) {
+    return [];
+  }
+
+  @Post('/')
+  OrderDto create(@Body() OrderDto order) {
+    return order;
+  }
+}

vaden/example/lib/src/dtos/order_dto.dart

@@ -0,0 +1,15 @@
+import 'package:example/src/enums/order_status.dart';
+import 'package:vaden/vaden.dart';
+
+@DTO()
+class OrderDto {
+  final String id;
+  final OrderStatus status;
+  final List<OrderStatus> history;
+
+  OrderDto({
+    required this.id,
+    required this.status,
+    required this.history,
+  });
+}

vaden/example/lib/src/enums/order_status.dart

@@ -0,0 +1,7 @@
+enum OrderStatus {
+  pending,
+  processing,
+  shipped,
+  delivered,
+  cancelled,
+}

vaden/example/lib/src/enums/product_category.dart

@@ -0,0 +1,6 @@
+enum ProductCategory {
+  electronics,
+  clothing,
+  food,
+  books,
+}

vaden/example/lib/src/hello_controller.dart

@@ -1,5 +1,6 @@
 import 'dart:io';
 
+import 'package:example/src/enums/product_category.dart';
 import 'package:example/src/product_dto.dart';
 import 'package:vaden/vaden.dart';
 
@@ -33,9 +34,9 @@ class HelloController {
   @Get('/object')
   List<ProductDto> object() {
     return [
-      ProductDto(name: 'Product 1', price: 100.0),
-      ProductDto(name: 'Product 2', price: 200.0),
-      ProductDto(name: 'Product 3', price: 300.0),
+      ProductDto(name: 'Product 1', price: 100.0, category: ProductCategory.electronics),
+      ProductDto(name: 'Product 2', price: 200.0, category: ProductCategory.clothing),
+      ProductDto(name: 'Product 3', price: 300.0, category: ProductCategory.food),
     ];
   }
 

vaden/example/lib/src/product_dto.dart

@@ -1,9 +1,15 @@
+import 'package:example/src/enums/product_category.dart';
 import 'package:vaden/vaden.dart';
 
 @DTO()
 class ProductDto {
   final String name;
   final double price;
+  final ProductCategory category;
 
-  ProductDto({required this.name, required this.price});
+  ProductDto({
+    required this.name,
+    required this.price,
+    required this.category,
+  });
 }

vaden_class_scanner/lib/src/setups/initial.dart

@@ -1,4 +1,5 @@
 import 'package:analyzer/dart/element/element.dart';
+import 'package:analyzer/dart/element/type.dart';
 import 'package:build/build.dart';
 import 'package:dart_style/dart_style.dart';
 import 'package:path/path.dart' as p;
@@ -191,6 +192,8 @@ ComponentRegistration _selectComponent({
     priority = ComponentPriority.configuration;
   } else if (controllerChecker.hasAnnotationOf(classElement)) {
     bodyBuffer.writeln(controllerSetup(classElement));
+    _collectFieldTypeImports(classElement, importSet);
+    _collectMethodParamTypeImports(classElement, importSet);
     priority = ComponentPriority.controller;
   } else if (apiClientBuffer != null &&
       apiClientChecker.hasAnnotationOf(classElement)) {
@@ -204,6 +207,7 @@ ComponentRegistration _selectComponent({
     priority = ComponentPriority.component;
   } else if (dtoChecker.hasAnnotationOf(classElement)) {
     dtoBuffer.writeln(dtoSetup(classElement));
+    _collectFieldTypeImports(classElement, importSet);
     priority = ComponentPriority.other;
   } else if (controllerAdviceChecker.hasAnnotationOf(classElement)) {
     final (adviceBody, imports) = controllerAdviceSetup(classElement);
@@ -344,3 +348,81 @@ Future<void> writeAndFormatApplication(String text, BuildStep buildStep) async {
     await buildStep.writeAsString(outputId, text);
   }
 }
+
+/// Adds import URIs for non-primitive types referenced by the fields of
+/// [classElement] (and its supertypes) that are not already covered by
+/// annotation-based scanning. This handles enums and other types defined
+/// in separate files.
+void _collectFieldTypeImports(
+  ClassElement classElement,
+  Set<String> importSet,
+) {
+  ClassElement? current = classElement;
+  while (current != null) {
+    for (final field in current.fields) {
+      if (field.isSynthetic || field.isStatic || field.isPrivate) continue;
+      _addTypeImport(field.type, importSet);
+    }
+    final superType = current.supertype;
+    if (superType == null || superType.isDartCoreObject) break;
+    current = superType.element as ClassElement?;
+  }
+}
+
+/// Adds import URIs for non-primitive types referenced by method parameters
+/// of [classElement], covering @Param, @Query and @Body enum types in
+/// controllers. Traverses supertypes to match the same method resolution
+/// used by [controllerSetup].
+void _collectMethodParamTypeImports(
+  ClassElement classElement,
+  Set<String> importSet,
+) {
+  final visited = <String>{};
+
+  void collectFromMethods(InterfaceElement element) {
+    for (final method in element.methods) {
+      if (method.isStatic || method.isPrivate) continue;
+      final name = method.name;
+      if (name == null || !visited.add(name)) continue;
+      for (final param in method.formalParameters) {
+        _addTypeImport(param.type, importSet);
+      }
+      _addTypeImport(method.returnType, importSet);
+    }
+  }
+
+  collectFromMethods(classElement);
+
+  for (final supertype in classElement.allSupertypes) {
+    if (supertype.element.name == 'Object') continue;
+    collectFromMethods(supertype.element);
+  }
+}
+
+/// Resolves the library URI for [type] and adds it to [importSet] if it is
+/// a non-core type (enum, class, etc.) defined outside of dart:core.
+void _addTypeImport(DartType type, Set<String> importSet) {
+  // Unwrap Future / FutureOr
+  if (type.isDartAsyncFuture || type.isDartAsyncFutureOr) {
+    if (type is ParameterizedType && type.typeArguments.isNotEmpty) {
+      _addTypeImport(type.typeArguments.first, importSet);
+    }
+    return;
+  }
+
+  // Unwrap List / Set / Map type arguments
+  if (type is ParameterizedType && type.typeArguments.isNotEmpty) {
+    for (final arg in type.typeArguments) {
+      _addTypeImport(arg, importSet);
+    }
+  }
+
+  final element = type.element;
+  if (element == null) return;
+
+  // Skip dart:core types (int, String, bool, etc.)
+  final uri = element.library?.uri.toString() ?? '';
+  if (uri.isEmpty || uri.startsWith('dart:')) return;
+
+  importSet.add("'$uri';");
+}