Merge pull request #2055 from graphcommerce-org/fix/GCOM-1065

chore(GCOM-1065): Refetch cart data after useMergeCustomerCart to ensure cart data availability.

.changeset/ten-suns-obey.md

@@ -0,0 +1,5 @@
+---
+'@graphcommerce/magento-cart': patch
+---
+
+Refetch cart data after useMergeCustomerCart to ensure cart data availability.

packages/magento-cart/graphql/CartRestore.graphql

@@ -0,0 +1,17 @@
+query CartRestore($cartId: String!) {
+  cart(cart_id: $cartId) {
+    id
+    __typename
+    items {
+      __typename
+      ...CartItem
+    }
+    prices {
+      grand_total {
+        currency
+        value
+      }
+    }
+    ...CartTotalQuantity
+  }
+}

packages/magento-cart/hooks/useMergeCustomerCart.ts

@@ -1,9 +1,11 @@
 import { useMutation } from '@graphcommerce/graphql'
 import { useCustomerQuery } from '@graphcommerce/magento-customer'
 import { useEffect } from 'react'
+import { CartRestoreDocument } from '../graphql/CartRestore.gql'
 import { CustomerCartDocument } from './CustomerCart.gql'
 import { UseMergeCustomerCartDocument } from './UseMergeCustomerCart.gql'
 import { useAssignCurrentCartId } from './useAssignCurrentCartId'
+import { useCartQuery } from './useCartQuery'
 import { useCurrentCartId } from './useCurrentCartId'
 
 /**
@@ -13,7 +15,11 @@ import { useCurrentCartId } from './useCurrentCartId'
 export function useMergeCustomerCart() {
   const { currentCartId } = useCurrentCartId()
   const assignCurrentCartId = useAssignCurrentCartId()
-  const [merge] = useMutation(UseMergeCustomerCartDocument, { errorPolicy: 'all' })
+  const { refetch } = useCartQuery(CartRestoreDocument)
+  const [merge] = useMutation(UseMergeCustomerCartDocument, {
+    errorPolicy: 'all',
+    onCompleted: () => refetch(),
+  })
 
   const destinationCartId = useCustomerQuery(CustomerCartDocument)?.data?.customerCart.id