model ProductVariant {
  id            Int       @id @default(autoincrement())
  name          String    @db.VarChar(255)
  basePrice     Decimal   @db.Decimal(15, 2)
  salePrice     Decimal   @db.Decimal(15, 2)
  description   String?   @db.Text
  barcode       String?   @unique() @db.VarChar(100)
  imageUrl      String?   @db.VarChar(255)
  unit          String?   @db.VarChar(10)
  quantity      Decimal?  @default(0.00) @db.Decimal(10, 0)
  alertQuantity Decimal?  @default(5.00) @db.Decimal(10, 0)
  isActive      Boolean   @default(true)
  isFeatured    Boolean   @default(false)
  createdAt     DateTime  @default(now()) @db.Timestamp(0)
  updatedAt     DateTime  @updatedAt @db.Timestamp(0)
  deletedAt     DateTime? @db.Timestamp(0)
  productId     Int
  product       Product   @relation("Product_Variant", fields: [productId], references: [id], onUpdate: NoAction)

  @@index([productId], map: "Product_Variants_productId_fkey")
  @@map("Product_Variants")
}

model Product {
  id                     Int                     @id @default(autoincrement())
  name                   String                  @db.VarChar(255)
  description            String?                 @db.Text
  sku                    String?                 @unique() @db.VarChar(100)
  barcode                String?                 @unique() @db.VarChar(100)
  createdAt              DateTime                @default(now()) @db.Timestamp(0)
  updatedAt              DateTime                @updatedAt @db.Timestamp(0)
  deletedAt              DateTime?               @db.Timestamp(0)
  brandId                Int?
  categoryId             Int?
  salePrice              Decimal                 @default(0.00) @db.Decimal(15, 0)
  minimumStockAlertLevel Decimal                 @default(1.00) @db.Decimal(10, 0)
  inventoryTransferItems InventoryTransferItem[] @relation("InventoryTransferItem_Product")
  variants               ProductVariant[]        @relation("Product_Variant")
  brand                  ProductBrand?           @relation("Product_Brand", fields: [brandId], references: [id], onUpdate: NoAction)
  category               ProductCategory?        @relation("Product_Category", fields: [categoryId], references: [id], onUpdate: NoAction)
  purchaseReceiptItems   PurchaseReceiptItem[]   @relation("Product_PurchaseReceiptItems")
  stockAdjustments       StockAdjustment[]       @relation("Product_Stock_Adjustments")
  stockBalances          StockBalance[]          @relation("StockBalance_Product")
  stockMovements         StockMovement[]         @relation("StockMovement_Product")
  salesInvoiceItems      SalesInvoiceItem[]

  @@index([brandId], map: "Products_brandId_fkey")
  @@index([categoryId], map: "Products_categoryId_fkey")
  @@map("Products")
}

model ProductBrand {
  id          Int       @id @default(autoincrement())
  name        String    @db.VarChar(100)
  description String?   @db.Text
  imageUrl    String?   @db.VarChar(255)
  createdAt   DateTime  @default(now()) @db.Timestamp(0)
  updatedAt   DateTime  @updatedAt @db.Timestamp(0)
  deletedAt   DateTime? @db.Timestamp(0)
  products    Product[] @relation("Product_Brand")

  @@map("Product_brands")
}

model ProductCategory {
  id          Int       @id @default(autoincrement())
  name        String    @db.VarChar(100)
  description String?   @db.Text
  imageUrl    String?   @db.VarChar(255)
  createdAt   DateTime  @default(now()) @db.Timestamp(0)
  updatedAt   DateTime  @updatedAt @db.Timestamp(0)
  deletedAt   DateTime? @db.Timestamp(0)
  products    Product[] @relation("Product_Category")

  @@map("Product_categories")
}