dynamite: Implement required object properties

packages/dynamite/lib/src/models/schema.dart

@@ -16,6 +16,7 @@ class Schema {
     required this.default_,
     required this.enum_,
     required this.properties,
+    required this.required,
     required this.items,
   });
 
@@ -49,5 +50,7 @@ class Schema {
 
   final Map<String, Schema>? properties;
 
+  final List<String>? required;
+
   final Schema? items;
 }

packages/dynamite/lib/src/models/schema.g.dart

@@ -21,6 +21,7 @@ Schema _$SchemaFromJson(Map<String, dynamic> json) {
       'default',
       'enum',
       'properties',
+      'required',
       'items'
     ],
   );
@@ -38,6 +39,7 @@ Schema _$SchemaFromJson(Map<String, dynamic> json) {
     properties: (json['properties'] as Map<String, dynamic>?)?.map(
       (k, e) => MapEntry(k, Schema.fromJson(e as Map<String, dynamic>)),
     ),
+    required: (json['required'] as List<dynamic>?)?.map((e) => e as String).toList(),
     items: json['items'] == null ? null : Schema.fromJson(json['items'] as Map<String, dynamic>),
   );
 }
@@ -62,6 +64,7 @@ Map<String, dynamic> _$SchemaToJson(Schema instance) {
   writeNotNull('default', instance.default_);
   writeNotNull('enum', instance.enum_);
   writeNotNull('properties', instance.properties?.map((k, e) => MapEntry(k, e.toJson())));
+  writeNotNull('required', instance.required);
   writeNotNull('items', instance.items?.toJson());
   return val;
 }

packages/dynamite/lib/src/openapi_builder.dart

@@ -462,7 +462,8 @@ class OpenAPIBuilder implements Builder {
                                       (final b) => b
                                         ..name = _toDartName(propertyName)
                                         ..toThis = true
-                                        ..named = true,
+                                        ..named = true
+                                        ..required = (schema.required ?? []).contains(propertyName),
                                     ),
                                   ),
                                 ),
@@ -497,10 +498,7 @@ class OpenAPIBuilder implements Builder {
                             Field(
                               (final b) {
                                 final result = resolveType(
-                                  _toDartName(
+                                  '${identifier}_${_toDartName(propertyName, uppercaseFirstCharacter: true)}',
-                                    '$identifier${_toDartName(propertyName, uppercaseFirstCharacter: true)}',
-                                    uppercaseFirstCharacter: true,
-                                  ),
                                   schema.properties![propertyName]!,
                                   extraJsonSerializableValues: extraJsonSerializableValues,
                                 );
@@ -509,7 +507,12 @@ class OpenAPIBuilder implements Builder {
 
                                 b
                                   ..name = _toDartName(propertyName)
-                                  ..type = refer(_makeNullable(result.typeName, true))
+                                  ..type = refer(
+                                    _makeNullable(
+                                      result.typeName,
+                                      !(schema.required ?? []).contains(propertyName),
+                                    ),
+                                  )
                                   ..modifier = FieldModifier.final$
                                   ..docs.addAll([
                                     if (propertySchema.description != null &&