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prisma/schema.prisma

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+generator client {
+  provider = "prisma-client-js"
+}
+
+datasource db {
+  provider = "postgresql"
+  url      = env("DATABASE_URL")
+}
+
+// ─── Auth (NextAuth v5) ────────────────────────────────────────────────────
+
+model User {
+  id            String    @id @default(cuid())
+  name          String?
+  email         String    @unique
+  emailVerified DateTime?
+  image         String?
+  role          Role      @default(CUSTOMER)
+  password      String?
+
+  accounts Account[]
+  sessions Session[]
+  orders   Order[]
+
+  createdAt DateTime @default(now())
+  updatedAt DateTime @updatedAt
+}
+
+model Account {
+  id                String  @id @default(cuid())
+  userId            String
+  type              String
+  provider          String
+  providerAccountId String
+  refresh_token     String?
+  access_token      String?
+  expires_at        Int?
+  token_type        String?
+  scope             String?
+  id_token          String?
+  session_state     String?
+
+  user User @relation(fields: [userId], references: [id], onDelete: Cascade)
+
+  @@unique([provider, providerAccountId])
+}
+
+model Session {
+  id           String   @id @default(cuid())
+  sessionToken String   @unique
+  userId       String
+  expires      DateTime
+
+  user User @relation(fields: [userId], references: [id], onDelete: Cascade)
+}
+
+model VerificationToken {
+  identifier String
+  token      String
+  expires    DateTime
+
+  @@unique([identifier, token])
+}
+
+enum Role {
+  CUSTOMER
+  ADMIN
+}
+
+// ─── Katalog ──────────────────────────────────────────────────────────────
+
+model Category {
+  id          String    @id @default(cuid())
+  name        String
+  slug        String    @unique
+  description String?
+  image       String?
+  products    Product[]
+
+  createdAt DateTime @default(now())
+  updatedAt DateTime @updatedAt
+}
+
+model Product {
+  id          String   @id @default(cuid())
+  name        String
+  slug        String   @unique
+  description String?
+  image       String?
+  published   Boolean  @default(false)
+  categoryId  String
+
+  category   Category         @relation(fields: [categoryId], references: [id])
+  variants   ProductVariant[]
+  orderItems OrderItem[]
+
+  createdAt DateTime @default(now())
+  updatedAt DateTime @updatedAt
+}
+
+model ProductVariant {
+  id        String  @id @default(cuid())
+  name      String
+  price     Int     // cena v haléřích (CZK)
+  stock     Int     @default(0)
+  sku       String? @unique
+  productId String
+
+  product    Product     @relation(fields: [productId], references: [id], onDelete: Cascade)
+  cartItems  CartItem[]
+  orderItems OrderItem[]
+
+  createdAt DateTime @default(now())
+  updatedAt DateTime @updatedAt
+}
+
+// ─── Košík ────────────────────────────────────────────────────────────────
+
+model Cart {
+  id        String     @id @default(cuid())
+  sessionId String?    @unique // pro guest uživatele
+  userId    String?    @unique // pro přihlášené
+  items     CartItem[]
+
+  createdAt DateTime @default(now())
+  updatedAt DateTime @updatedAt
+}
+
+model CartItem {
+  id        String @id @default(cuid())
+  cartId    String
+  variantId String
+  quantity  Int
+
+  cart    Cart           @relation(fields: [cartId], references: [id], onDelete: Cascade)
+  variant ProductVariant @relation(fields: [variantId], references: [id])
+
+  @@unique([cartId, variantId])
+}
+
+// ─── Objednávky ───────────────────────────────────────────────────────────
+
+model Order {
+  id              String      @id @default(cuid())
+  userId          String?
+  guestEmail      String?
+  status          OrderStatus @default(PENDING)
+  totalAmount     Int         // v haléřích
+  stripeSessionId String?     @unique
+
+  shippingName    String
+  shippingEmail   String
+  shippingPhone   String?
+  shippingStreet  String
+  shippingCity    String
+  shippingZip     String
+  shippingCountry String      @default("CZ")
+
+  user  User?       @relation(fields: [userId], references: [id])
+  items OrderItem[]
+
+  createdAt DateTime @default(now())
+  updatedAt DateTime @updatedAt
+}
+
+model OrderItem {
+  id        String @id @default(cuid())
+  orderId   String
+  productId String
+  variantId String
+  quantity  Int
+  unitPrice Int    // cena v době objednávky (snapshot)
+
+  order   Order          @relation(fields: [orderId], references: [id], onDelete: Cascade)
+  product Product        @relation(fields: [productId], references: [id])
+  variant ProductVariant @relation(fields: [variantId], references: [id])
+}
+
+enum OrderStatus {
+  PENDING
+  PAID
+  PROCESSING
+  SHIPPED
+  DELIVERED
+  CANCELLED
+  REFUNDED
+}