Merge pull request #28 from MakairaIO/feat/add-is-product-part-of-wis…

…hlist

feat(useShopWishlist): add isProductInWishlist to check if product is…

packages/storefront-react/src/hooks/use-shop-wishlist.hook.ts

@@ -1,15 +1,34 @@
-import { useContext } from 'react'
+import { MakairaResponse } from '@makaira/storefront-types'
+import { useCallback, useContext } from 'react'
 import { ShopContext, ShopContextData } from '../context'
 
 export type UseShopWishlistData = {
   /**
    * The current wishlist with the products
    */
   wishlist: ShopContextData['wishlist']
+  /**
+   *
+   */
+  isProductInWishlist: (id: string) => MakairaResponse<boolean, Error>
 }
 
 export function useShopWishlist(): UseShopWishlistData {
   const { wishlist } = useContext(ShopContext)
 
-  return { wishlist }
+  const isProductInWishlist = useCallback(
+    (id: string): MakairaResponse<boolean, Error> => {
+      if (wishlist?.items) {
+        return {
+          data: wishlist.items.some(({ product }) => product.id === id),
+          error: undefined,
+        }
+      }
+
+      return { data: undefined, error: new Error('Wishlist is not loaded') }
+    },
+    [wishlist]
+  )
+
+  return { wishlist, isProductInWishlist }
 }