feat: add generated code

backend/src/product/product.service.ts

@@ -0,0 +1,74 @@
+import { Injectable } from '@nestjs/common';
+import { PrismaService } from '../prisma/prisma.service';
+import { Product, Prisma } from '@prisma/client';
+
+@Injectable()
+export class ProductService {
+  constructor(private prisma: PrismaService) {}
+
+  async findAll(params: {
+    skip?: number;
+    take?: number;
+    where?: Prisma.ProductWhereInput;
+    orderBy?: Prisma.ProductOrderByWithRelationInput;
+  }): Promise<{ data: Product[]; total: number }> {
+    const { skip, take, where, orderBy } = params;
+    const [data, total] = await this.prisma.$transaction([
+      this.prisma.product.findMany({ 
+        skip, 
+        take, 
+        where, 
+        orderBy,
+        include: {
+          productType: true,
+          parent: true,
+        },
+      }),
+      this.prisma.product.count({ where }),
+    ]);
+    return { data, total };
+  }
+
+  async findOne(where: Prisma.ProductWhereUniqueInput): Promise<Product | null> {
+    return this.prisma.product.findUnique({ 
+      where,
+      include: {
+        productType: true,
+        parent: true,
+      },
+    });
+  }
+
+  async create(data: Prisma.ProductCreateInput): Promise<Product> {
+    return this.prisma.product.create({ 
+      data,
+      include: {
+        productType: true,
+        parent: true,
+      },
+    });
+  }
+
+  async update(params: {
+    where: Prisma.ProductWhereUniqueInput;
+    data: Prisma.ProductUpdateInput;
+  }): Promise<Product> {
+    return this.prisma.product.update({
+      ...params,
+      include: {
+        productType: true,
+        parent: true,
+      },
+    });
+  }
+
+  async remove(where: Prisma.ProductWhereUniqueInput): Promise<Product> {
+    return this.prisma.product.delete({ 
+      where,
+      include: {
+        productType: true,
+        parent: true,
+      },
+    });
+  }
+}