cart

src/modules/cart/dto/create-cart.dto.ts

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+import { ApiProperty } from '@nestjs/swagger';
+import { IsNotEmpty, IsString, IsArray, ValidateNested, IsNumber, Min } from 'class-validator';
+import { Type } from 'class-transformer';
+
+export class CartItemDto {
+  @ApiProperty({ description: 'Food ID', example: '01KA9Q52JSWFY98TW3HZY6XEVZ' })
+  @IsNotEmpty()
+  @IsString()
+  foodId!: string;
+
+  @ApiProperty({ description: 'Quantity of the food item', example: 2, minimum: 1 })
+  @IsNotEmpty()
+  @IsNumber()
+  @Min(1)
+  quantity!: number;
+}
+
+export class CreateCartDto {
+  @ApiProperty({
+    description: 'List of cart items',
+    type: [CartItemDto],
+    example: [{ foodId: '01KA9Q52JSWFY98TW3HZY6XEVZ', quantity: 2 }],
+  })
+  @IsNotEmpty()
+  @IsArray()
+  @ValidateNested({ each: true })
+  @Type(() => CartItemDto)
+  items!: CartItemDto[];
+}

src/modules/cart/dto/update-cart.dto.ts

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+import { PartialType, ApiProperty } from '@nestjs/swagger';
+import { CreateCartDto, CartItemDto } from './create-cart.dto';
+
+export class UpdateCartItemDto extends PartialType(CartItemDto) {}
+
+export class UpdateCartDto {
+  @ApiProperty({ description: 'List of cart items to update', type: [UpdateCartItemDto], required: false })
+  items?: UpdateCartItemDto[];
+}