import { HttpTypes } from "@medusajs/types"

export function isProductVariant(
  row:
    | HttpTypes.AdminProductVariant
    | HttpTypes.AdminProductVariantInventoryItemLink
): row is HttpTypes.AdminProductVariant {
  return row.id.startsWith("variant_")
}

export function isProductVariantWithInventoryPivot(
  row:
    | HttpTypes.AdminProductVariant
    | HttpTypes.AdminProductVariantInventoryItemLink
): row is HttpTypes.AdminProductVariant & {
  inventory_items: HttpTypes.AdminProductVariantInventoryItemLink[]
} {
  return (row as any).inventory_items && (row as any).inventory_items.length > 0
}

export function getDisabledInventoryRows(
  variants: HttpTypes.AdminProductVariant[]
) {
  const seen: Record<string, HttpTypes.AdminProductVariant> = {}
  const disabled: Record<string, { id: string; title: string; sku: string }> =
    {}

  variants.forEach((variant) => {
    const inventoryItems = variant.inventory_items

    if (!inventoryItems) {
      return
    }

    inventoryItems.forEach((item) => {
      const existing = seen[item.inventory_item_id]

      if (existing) {
        disabled[item.inventory_item_id] = {
          id: existing.id,
          title: existing.title || "",
          sku: existing.sku || "",
        }

        return
      }

      seen[item.inventory_item_id] = variant
    })
  })

  return disabled
}