For Frontend practice

Frontend/1 het/backend/prisma/schema.prisma

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+generator client {
+  provider = "prisma-client-js"
+}
+
+datasource db {
+  provider = "postgresql"
+  url      = env("DATABASE_URL")
+}
+
+model User {
+  id           Int      @id @default(autoincrement())
+  name         String
+  email        String   @unique
+  passwordHash String
+  createdAt    DateTime @default(now())
+}
+
+model Category {
+  id        Int       @id @default(autoincrement())
+  name      String    @unique
+  slug      String    @unique
+  createdAt DateTime  @default(now())
+  products  Product[]
+}
+
+model Product {
+  id          Int         @id @default(autoincrement())
+  categoryId  Int
+  name        String      @unique
+  description String?
+  price       Decimal     @db.Decimal(10, 2)
+  imageUrl    String?
+  stock       Int         @default(0)
+  createdAt   DateTime    @default(now())
+  category    Category    @relation(fields: [categoryId], references: [id], onDelete: Restrict)
+  orderItems  OrderItem[]
+}
+
+model Order {
+  id            Int         @id @default(autoincrement())
+  customerName  String
+  customerEmail String
+  totalPrice    Decimal     @db.Decimal(10, 2)
+  createdAt     DateTime    @default(now())
+  items         OrderItem[]
+}
+
+model OrderItem {
+  id        Int     @id @default(autoincrement())
+  orderId   Int
+  productId Int
+  quantity  Int
+  unitPrice Decimal @db.Decimal(10, 2)
+  order     Order   @relation(fields: [orderId], references: [id], onDelete: Cascade)
+  product   Product @relation(fields: [productId], references: [id], onDelete: Restrict)
+}

Frontend/1 het/backend/prisma/seed.js

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+const { PrismaClient } = require("@prisma/client");
+
+const prisma = new PrismaClient();
+
+async function main() {
+  const categories = [
+    { name: "Shoes", slug: "shoes" },
+    { name: "Bags", slug: "bags" },
+    { name: "Accessories", slug: "accessories" }
+  ];
+
+  for (const category of categories) {
+    await prisma.category.upsert({
+      where: { slug: category.slug },
+      update: {},
+      create: category
+    });
+  }
+
+  const shoes = await prisma.category.findUnique({ where: { slug: "shoes" } });
+  const bags = await prisma.category.findUnique({ where: { slug: "bags" } });
+  const accessories = await prisma.category.findUnique({ where: { slug: "accessories" } });
+
+  const products = [
+    {
+      categoryId: shoes.id,
+      name: "Street Runner",
+      description: "Lightweight city sneaker.",
+      price: "18990.00",
+      imageUrl: "/images/street-runner.jpg",
+      stock: 24
+    },
+    {
+      categoryId: shoes.id,
+      name: "Trail Edge",
+      description: "Stable shoe for outdoor tracks.",
+      price: "24990.00",
+      imageUrl: "/images/trail-edge.jpg",
+      stock: 13
+    },
+    {
+      categoryId: bags.id,
+      name: "Urban Tote",
+      description: "Everyday tote with zipper top.",
+      price: "14990.00",
+      imageUrl: "/images/urban-tote.jpg",
+      stock: 30
+    },
+    {
+      categoryId: accessories.id,
+      name: "Classic Cap",
+      description: "Adjustable cotton cap.",
+      price: "6990.00",
+      imageUrl: "/images/classic-cap.jpg",
+      stock: 42
+    }
+  ];
+
+  for (const product of products) {
+    await prisma.product.upsert({
+      where: { name: product.name },
+      update: {},
+      create: product
+    });
+  }
+}
+
+main()
+  .then(async () => {
+    await prisma.$disconnect();
+    console.log("Prisma seed completed.");
+  })
+  .catch(async (error) => {
+    console.error(error);
+    await prisma.$disconnect();
+    process.exit(1);
+  });