dynamite: add contentString serialization

Signed-off-by: Nikolas Rimikis <rimikis.nikolas@gmail.com>

packages/dynamite/dynamite/lib/src/openapi_builder.dart

@@ -1018,7 +1018,7 @@ class OpenAPIBuilder implements Builder {
           '])',
           r'final Serializers serializers = _$serializers;',
           '',
-          'final Serializers jsonSerializers = (serializers.toBuilder()..addPlugin(StandardJsonPlugin())).build();',
+          'final Serializers jsonSerializers = (serializers.toBuilder()..addPlugin(StandardJsonPlugin())..addPlugin(const ContentStringPlugin())).build();',
           '',
           '// coverage:ignore-start',
           'T deserialize$prefix<T>(final Object data) => serializers.deserialize(data, specifiedType: FullType(T))! as T;',
@@ -1228,7 +1228,6 @@ class State {
   final resolvedTypes = <String>[];
   final registeredJsonObjects = <String>[];
   final output = <Spec>[];
-  bool hasContentString = false;
 }
 
 TypeResult resolveObject(
@@ -1675,7 +1674,6 @@ TypeResult resolveType(
       identifier,
       schema.contentSchema!,
     );
-    state.hasContentString = true;
 
     result = TypeResultObject('ContentString', generics: [subResult]);
   } else {

packages/dynamite/dynamite/lib/src/type_result/object.dart

@@ -1,5 +1,7 @@
 part of '../../dynamite.dart';
 
+const _contentString = 'ContentString';
+
 class TypeResultObject extends TypeResult {
   TypeResultObject(
     super.className, {
@@ -10,7 +12,13 @@ class TypeResultObject extends TypeResult {
         );
 
   @override
-  String serialize(final String object) => '$object.toJson()';
+  String serialize(final String object) {
+    if (className == _contentString) {
+      return 'jsonSerializers.serialize(messages, specifiedType: const $fullType)';
+    }
+
+    return '$object.toJson()';
+  }
 
   @override
   String encode(
@@ -18,6 +26,11 @@ class TypeResultObject extends TypeResult {
     final bool onlyChildren = false,
     final String? mimeType,
   }) {
+    if (className == _contentString) {
+      assert(mimeType == 'application/json', '$_contentString should have a mimeType of application/json');
+      return object;
+    }
+
     switch (mimeType) {
       case 'application/json':
         return 'json.encode($object)';
@@ -29,8 +42,13 @@ class TypeResultObject extends TypeResult {
   }
 
   @override
-  String deserialize(final String object, {final bool toBuilder = false}) =>
-      '$name.fromJson($object as Object)${toBuilder ? '.toBuilder()' : ''}';
+  String deserialize(final String object, {final bool toBuilder = false}) {
+    if (className == 'ContentString') {
+      return 'jsonSerializers.deserialize(messages, specifiedType: const $fullType)! as $name';
+    }
+
+    return '$name.fromJson($object as Object)${toBuilder ? '.toBuilder()' : ''}';
+  }
 
   @override
   String decode(final String object) => 'json.decode($object as String)';

packages/dynamite/dynamite/lib/src/type_result/type_result.dart

@@ -20,6 +20,18 @@ abstract class TypeResult {
     return className;
   }
 
+  String get fullType {
+    if (generics.isNotEmpty) {
+      final buffer = StringBuffer('FullType($className, [')
+        ..writeAll(generics.map((final c) => c.fullType).intersperse(', '))
+        ..write('])');
+
+      return buffer.toString();
+    }
+
+    return 'FullType($className)';
+  }
+
   String serialize(final String object);
 
   String deserialize(final String object, {final bool toBuilder = false});

packages/dynamite/dynamite/test/type_result_test.dart

@@ -5,27 +5,30 @@ void main() {
   group(TypeResultList, () {
     test('name', () {
       final subType = TypeResultBase('String');
-      final listType = TypeResultList('BuiltList', subType);
+      final type = TypeResultList('BuiltList', subType);
 
-      expect(listType.name, 'BuiltList<String>');
+      expect(type.name, 'BuiltList<String>');
+      expect(type.fullType, 'FullType(BuiltList, [FullType(String)])');
     });
   });
 
   group(TypeResultMap, () {
     test('name', () {
       final subType = TypeResultBase('int');
-      final listType = TypeResultMap('BuiltMap', subType);
+      final type = TypeResultMap('BuiltMap', subType);
 
-      expect(listType.name, 'BuiltMap<String, int>');
+      expect(type.name, 'BuiltMap<String, int>');
+      expect(type.fullType, 'FullType(BuiltMap, [FullType(String), FullType(int)])');
     });
   });
 
   group(TypeResultObject, () {
     test('name', () {
       final subType = TypeResultBase('String');
-      final listType = TypeResultObject('CustomType', generics: [subType]);
+      final type = TypeResultObject('CustomType', generics: [subType]);
 
-      expect(listType.name, 'CustomType<String>');
+      expect(type.name, 'CustomType<String>');
+      expect(type.fullType, 'FullType(CustomType, [FullType(String)])');
     });
   });
 
@@ -34,6 +37,7 @@ void main() {
       final type = TypeResultBase('String');
 
       expect(type.name, 'String');
+      expect(type.fullType, 'FullType(String)');
     });
   });
 }