enum ReservationStatus {
  ACTIVE
  RELEASED
  COMMITTED
}
model Warehouse {
  id String @id @default(uuid()) @db.Uuid
  organizationId String @map("organization_id") @db.Uuid
  name String @db.VarChar(100)
  organization Organization @relation(fields: [organizationId], references: [id], onDelete: Restrict)
  items StockItem[]
  @@unique([organizationId, name])
  @@unique([id, organizationId])
  @@map("warehouses")
}
model StockItem {
  id String @id @default(uuid()) @db.Uuid
  organizationId String @map("organization_id") @db.Uuid
  variantId String @map("variant_id") @db.Uuid
  warehouseId String @map("warehouse_id") @db.Uuid
  onHand Int @default(0) @map("on_hand")
  variant ProductVariant @relation(fields: [variantId, organizationId], references: [id, organizationId], onDelete: Restrict)
  warehouse Warehouse @relation(fields: [warehouseId, organizationId], references: [id, organizationId], onDelete: Restrict)
  entries StockLedger[]
  reservations StockReservation[]
  @@unique([variantId, warehouseId])
  @@unique([id, organizationId])
  @@index([organizationId, id])
  @@map("stock_items")
}
model StockLedger {
  id String @id @default(uuid()) @db.Uuid
  stockItemId String @map("stock_item_id") @db.Uuid
  organizationId String @map("organization_id") @db.Uuid
  actorId String @map("actor_id") @db.Uuid
  actor User @relation(fields: [actorId, organizationId], references: [id, organizationId], onDelete: Restrict)
  delta Int
  reason String @db.VarChar(200)
  idempotencyKey String @map("idempotency_key") @db.Uuid
  requestHash String @map("request_hash") @db.Char(64)
  createdAt DateTime @default(now()) @map("created_at") @db.Timestamptz(3)
  stockItem StockItem @relation(fields: [stockItemId, organizationId], references: [id, organizationId], onDelete: Restrict)
  @@unique([organizationId, idempotencyKey])
  @@index([stockItemId, createdAt, id])
  @@map("stock_ledger")
}
model StockReservation {
  id String @id @default(uuid()) @db.Uuid
  stockItemId String @map("stock_item_id") @db.Uuid
  organizationId String @map("organization_id") @db.Uuid
  userId String @map("user_id") @db.Uuid
  user User @relation(fields: [userId, organizationId], references: [id, organizationId], onDelete: Restrict)
  quantity Int
  status ReservationStatus @default(ACTIVE)
  idempotencyKey String @map("idempotency_key") @db.Uuid
  requestHash String @map("request_hash") @db.Char(64)
  expiresAt DateTime @map("expires_at") @db.Timestamptz(3)
  createdAt DateTime @default(now()) @map("created_at") @db.Timestamptz(3)
  stockItem StockItem @relation(fields: [stockItemId, organizationId], references: [id, organizationId], onDelete: Restrict)
  @@unique([organizationId, idempotencyKey])
  @@index([stockItemId, status, expiresAt])
  @@index([userId, organizationId])
  @@map("stock_reservations")
}