init

src/modules/coupons/dto/validate-coupon.dto.ts

@@ -0,0 +1,21 @@
+import { IsNotEmpty, IsString, IsNumber, IsOptional } from 'class-validator';
+import { ApiProperty, ApiPropertyOptional } from '@nestjs/swagger';
+import { Type } from 'class-transformer';
+
+export class ValidateCouponDto {
+  @IsNotEmpty()
+  @IsString()
+  @ApiProperty({ example: 'DISCOUNT10', description: 'Coupon code to validate' })
+  code!: string;
+
+  @IsOptional()
+  @IsNumber()
+  @Type(() => Number)
+  @ApiPropertyOptional({ example: 150000, description: 'Order total amount for validation' })
+  orderAmount?: number;
+
+  @IsOptional()
+  @IsString()
+  @ApiPropertyOptional({ example: 'user-id', description: 'User ID for per-user usage limits' })
+  userId?: string;
+}