Feat/e commerce

package.json

@@ -13,7 +13,7 @@
         "start:debug": "nest start --debug --watch",
         "start:prod": "node dist/main",
         "lint": "eslint \"{src,apps,libs,test}/**/*.ts\" --fix",
-        "test": "dotenv -e .env.test -- jest",
+        "test": "jest",
         "test:watch": "jest --watch",
         "test:cov": "jest --coverage",
         "test:debug": "node --inspect-brk -r tsconfig-paths/register -r ts-node/register node_modules/.bin/jest --runInBand",
@@ -23,7 +23,7 @@
         "docker:up": "docker-compose -f docker-compose.yaml up -d",
         "docker:down": "docker-compose -f docker-compose.yaml down -v",
         "migrate:test": "dotenv -e .env.test -- npx prisma migrate deploy",
-        "seed:test": "dotenv -e .env.test -- npx prisma db seed"
+        "seed:test": "npx prisma db seed"
     },
     "dependencies": {
         "@nestjs/common": "^10.0.0",
@@ -33,6 +33,8 @@
         "@nestjs/swagger": "^8.1.0",
         "@nestjs/typeorm": "^10.0.2",
         "@prisma/client": "^6.1.0",
+        "class-transformer": "^0.5.1",
+        "class-validator": "^0.14.1",
         "cross-env": "^7.0.3",
         "dotenv": "^16.4.7",
         "mysql2": "^3.9.2",

prisma/migrations/20250104170541_init/migration.sql → prisma/migrations/20250106102002_initial/migration.sql

@@ -34,7 +34,6 @@ CREATE TABLE `order_item` (
     `created_at` TIMESTAMP(0) NOT NULL DEFAULT CURRENT_TIMESTAMP(0),
     `updated_at` TIMESTAMP(0) NOT NULL,
 
-    UNIQUE INDEX `order_item_product_id_key`(`product_id`),
     PRIMARY KEY (`id`)
 ) DEFAULT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
 
@@ -70,6 +69,7 @@ CREATE TABLE `product` (
     `id` INTEGER NOT NULL AUTO_INCREMENT,
     `name` VARCHAR(50) NOT NULL,
     `price` INTEGER NOT NULL,
+    `status` BOOLEAN NOT NULL DEFAULT true,
     `created_at` TIMESTAMP(0) NOT NULL DEFAULT CURRENT_TIMESTAMP(0),
     `updated_at` TIMESTAMP(0) NOT NULL,
 

prisma/schema/coupon.prisma

@@ -3,13 +3,13 @@ model Coupon {
   name           String          @db.VarChar(50)
   discountType   String          @map("discount_type") @db.VarChar(10)
   discountValue  Int             @map("discount_value") @db.Int
-  status         Boolean         @default(true)
+  status         String          @default("AVAILABLE")
   startAt        DateTime        @map("start_at") @db.Timestamp(0)
   endAt          DateTime        @map("end_at") @db.Timestamp(0)
   createdAt      DateTime        @default(now()) @map("created_at") @db.Timestamp(0)
   updatedAt      DateTime        @updatedAt @map("updated_at") @db.Timestamp(0)
   couponQuantity CouponQuantity?
-  UserCoupon     UserCoupon?
+  userCoupon     UserCoupon?
 
   @@map("coupon")
 }

prisma/schema/order-item.prisma

@@ -3,7 +3,7 @@ model OrderItem {
   order     Order    @relation(fields: [orderId], references: [id])
   orderId   Int      @map("order_id")
   product   Product  @relation(fields: [productId], references: [id])
-  productId Int      @unique @map("product_id")
+  productId Int      @map("product_id")
   quantity  Int
   price     Int
   createdAt DateTime @default(now()) @map("created_at") @db.Timestamp(0)

prisma/schema/product.prisma

@@ -2,10 +2,11 @@ model Product {
   id              Int              @id @default(autoincrement())
   name            String           @db.VarChar(50)
   price           Int              @db.Int
+  status          String           @default("IN_STOCK")
   createdAt       DateTime         @default(now()) @map("created_at") @db.Timestamp(0)
   updatedAt       DateTime         @updatedAt @map("updated_at") @db.Timestamp(0)
-  orderItem       OrderItem?
-  ProductQuantity ProductQuantity?
+  orderItem       OrderItem[]
+  productQuantity ProductQuantity?
 
   @@map("product")
 }

prisma/schema/user-coupon.prisma

@@ -8,7 +8,7 @@ model UserCoupon {
   usedAt    DateTime @map("used_at") @db.Timestamp(0)
   createdAt DateTime @default(now()) @map("created_at") @db.Timestamp(0)
   updatedAt DateTime @updatedAt @map("updated_at") @db.Timestamp(0)
-  Order     Order?
+  order     Order?
 
   @@map("user_coupon")
 }

prisma/schema/user.prisma

@@ -4,7 +4,7 @@ model User {
   createdAt  DateTime    @default(now()) @map("created_at") @db.Timestamp(0)
   updatedAt  DateTime    @updatedAt @map("updated_at") @db.Timestamp(0)
   order      Order[]
-  UserCoupon UserCoupon?
+  userCoupon UserCoupon?
 
   @@map("user")
 }

prisma/seed.ts

@@ -19,14 +19,53 @@ async function initTable() {
 }
 
 async function createMockData() {
-    await prisma.user.create({
-        data: { balance: 10000 },
-    });
+    await Promise.all(
+        Array.from({ length: 10 }, () =>
+            prisma.user.create({
+                data: { balance: 10000 },
+            }),
+        ),
+    );
+
+    //사용자 생성
+    await Promise.all(
+        Array.from({ length: 10 }, () =>
+            prisma.user.create({
+                data: { balance: 10000 },
+            }),
+        ),
+    );
+
+    //상품 생성 및 재고 생성
+    for (const index of [...Array(30).keys()]) {
+        await prisma.product.create({
+            data: {
+                name: `테스트상품${index + 1}`,
+                price: Math.floor(Math.random() * 90001) + 10000, // 10000 ~ 100000 사이 랜덤 가격
+                ProductQuantity: {
+                    create: {
+                        quantity: 10,
+                        remainingQuantity: 10,
+                    },
+                },
+            },
+        });
+    }
 
-    await prisma.product.create({
+    //쿠폰 생성 및 재고 생성
+    await prisma.coupon.create({
         data: {
-            name: '테스트 상품2',
-            price: 50000,
+            name: '테스트쿠폰',
+            discountType: 'PERCENT',
+            discountValue: 10,
+            startAt: new Date(),
+            endAt: new Date(new Date().getTime() + 1000 * 60 * 60 * 24 * 1),
+            couponQuantity: {
+                create: {
+                    quantity: 10,
+                    remainingQuantity: 10,
+                },
+            },
         },
     });
 }

src/database/prisma/prisma.service.ts

@@ -23,7 +23,7 @@ export class PrismaService extends PrismaClient implements OnModuleInit {
     }
 
     prismaLog() {
-        if (this.configService.get('NODE_ENV') === 'dev') {
+        if (this.configService.get('NODE_ENV') !== 'prod') {
             (this.$on as any)('query', (e: Prisma.QueryEvent) => {
                 this.logger.debug(`Query: ${e.query}`);
                 this.logger.debug(`Duration: ${e.duration}ms`);

src/main.ts

@@ -2,10 +2,13 @@ import { NestFactory } from '@nestjs/core';
 import { AppModule } from './app.module';
 import { DocumentBuilder, SwaggerModule } from '@nestjs/swagger';
 import { PrismaService } from './database/prisma/prisma.service';
+import { ValidationPipe } from '@nestjs/common';
 
 async function bootstrap() {
     const app = await NestFactory.create(AppModule);
 
+    app.useGlobalPipes(new ValidationPipe({ transform: true }));
+
     const prismaService = app.get(PrismaService);
     await prismaService.enableShutdownHooks();
 

src/product/application/product.repository.ts

@@ -0,0 +1,8 @@
+import { Product } from '../domain/product';
+import { GetProductsQueryDTO } from '../presentation/dto/product.request.dto';
+
+export interface ProductRepository {
+    getProducts(query: GetProductsQueryDTO): Promise<Product[]>;
+}
+
+export const PRODUCT_REPOSITORY = Symbol('PRODUCT_REPOSITORY');

src/product/application/product.service.ts

@@ -1,4 +1,16 @@
-import { Injectable } from '@nestjs/common';
+import { Inject, Injectable } from '@nestjs/common';
+import { PRODUCT_REPOSITORY, ProductRepository } from './product.repository';
+import { GetProductsQueryDTO } from '../presentation/dto/product.request.dto';
+import { ProductResponseDto } from '../presentation/dto/product.response.dto';
 
 @Injectable()
-export class ProductService {}
+export class ProductService {
+    constructor(
+        @Inject(PRODUCT_REPOSITORY) private readonly productRepository: ProductRepository,
+    ) {}
+
+    async getProducts(query: GetProductsQueryDTO): Promise<ProductResponseDto[]> {
+        const products = await this.productRepository.getProducts(query);
+        return products.map((product) => ProductResponseDto.of(product));
+    }
+}

src/product/domain/product.ts

@@ -1,4 +1,5 @@
 import { ApiProperty } from '@nestjs/swagger';
+import { ProductQuantity } from './product-quantity';
 
 export class Product {
     @ApiProperty({ example: 1, description: '상품 ID' })
@@ -18,4 +19,7 @@ export class Product {
 
     @ApiProperty({ example: '2025-01-01', description: '수정일' })
     updatedAt: Date;
+
+    @ApiProperty({ type: ProductQuantity, description: '상품 수량' })
+    ProductQuantity: ProductQuantity;
 }

src/product/infrastructure/product.typeorm.repository.ts

@@ -0,0 +1,20 @@
+import { PrismaService } from 'src/database/prisma/prisma.service';
+import { GetProductsQueryDTO } from '../presentation/dto/product.request.dto';
+import { Injectable } from '@nestjs/common';
+import { ProductRepository } from '../application/product.repository';
+import { Product } from '../domain/product';
+
+@Injectable()
+export class ProductTypeOrmRepository implements ProductRepository {
+    constructor(private readonly prisma: PrismaService) {}
+
+    async getProducts(query: GetProductsQueryDTO): Promise<Product[]> {
+        return await this.prisma.product.findMany({
+            include: {
+                ProductQuantity: true,
+            },
+            skip: query.offset,
+            take: query.size,
+        });
+    }
+}

src/product/presentation/dto/product.request.dto.ts

@@ -0,0 +1,21 @@
+import { ApiProperty } from '@nestjs/swagger';
+import { Transform } from 'class-transformer';
+import { IsNumber, Min } from 'class-validator';
+
+export class GetProductsQueryDTO {
+    @ApiProperty({ example: 1, description: '페이지 번호' })
+    @IsNumber()
+    @Transform(({ value }) => parseInt(value))
+    @Min(1)
+    page: number = 1;
+
+    @ApiProperty({ example: 10, description: '페이지 크기' })
+    @Transform(({ value }) => parseInt(value))
+    @IsNumber()
+    @Min(10)
+    size: number = 10;
+
+    get offset() {
+        return (this.page - 1) * this.size;
+    }
+}