Initial draft

lib/dto/discount_add.dart

@@ -0,0 +1,18 @@
+import 'package:json_annotation/json_annotation.dart';
+
+part 'discount_add.g.dart';
+
+@JsonSerializable(fieldRename: FieldRename.snake)
+class DiscountAddDTO {
+  DiscountAddDTO(
+      {required this.note, required this.deliveryId, required this.discount});
+
+  String note;
+  String deliveryId;
+  int discount;
+
+  factory DiscountAddDTO.fromJson(Map<String, dynamic> json) =>
+      _$DiscountAddDTOFromJson(json);
+
+  Map<dynamic, dynamic> toJson() => _$DiscountAddDTOToJson(this);
+}