import type { ProductFilterParams, ProductListItemFragment } from '@graphcommerce/magento-product'
import { nonNullable } from '@graphcommerce/next-ui'
import type { GoogleDatalayerItem } from '../productToDatalayerItem/productToDatalayerItem'
import { productToDatalayerItem } from '../productToDatalayerItem/productToDatalayerItem'

export type ViewItemList = {
  item_list_id: string
  item_list_name: string
  items: GoogleDatalayerItem[]
  filter_params?: ProductFilterParams | null
}

export type SelectItem = {
  item_list_id: string
  item_list_name: string
  items: GoogleDatalayerItem[]
  filter_params?: ProductFilterParams | null
}

export function productItemsToViewItemList<P extends ProductListItemFragment>(
  item_list_id: string,
  item_list_name: string,
  items: Array<P | null | undefined> | null | undefined,
  filter_params: ProductFilterParams | null | undefined,
): ViewItemList {
  return {
    item_list_id,
    item_list_name,
    items: (items ?? [])?.filter(nonNullable)?.map(productToDatalayerItem),
    filter_params,
  }
}

export function viewItemListToSelectItem(
  viewItemList: ReturnType<typeof productItemsToViewItemList>,
  itemId: string,
): SelectItem {
  return {
    ...viewItemList,
    items: viewItemList.items.filter((i) => i.item_id === itemId),
  }
}