add add-item hook

packages/sylius/src/cart/use-add-item.tsx

@@ -1,17 +1,47 @@
 import useAddItem, { UseAddItem } from '@vercel/commerce/cart/use-add-item'
 import { MutationHook } from '@vercel/commerce/utils/types'
+import { useCallback } from 'react'
+import { getCartToken, setCartToken } from '../utils/token/cart-token'
+import useCart from './use-cart'
 
 export default useAddItem as UseAddItem<typeof handler>
 export const handler: MutationHook<any> = {
   fetchOptions: {
-    query: '',
+    url: '/api/v2/shop/orders',
+    method: 'POST',
+  },
+  fetcher: async ({ input: { productId, variantId }, options, fetch }) => {
+    if (!getCartToken()) {
+      const syliusOrder = await fetch({
+        url: options.url,
+        method: 'POST',
+        body: {
+          localeCode: 'fr_FR',
+        },
+      })
+      setCartToken(syliusOrder.tokenValue)
+    }
+    await fetch({
+      url: `${options.url}/${getCartToken()}/items`,
+      method: options.method,
+      body: {
+        productVariant: variantId,
+        quantity: 1,
+      },
+    })
   },
-  async fetcher({ input, options, fetch }) {},
   useHook:
     ({ fetch }) =>
     () => {
-      return async function addItem() {
-        return {}
-      }
+      const { mutate } = useCart()
+
+      return useCallback(
+        async function addItem(input) {
+          const data = await fetch({ input })
+          await mutate(data, false)
+          return data
+        },
+        [fetch, mutate]
+      )
     },
 }