UpdateCartLineItem

import { getNormalizers } from "@alokai/connect/integration-kit";
import { HttpStatusCode } from "@alokai/connect/middleware";

import { defineApi, getCartId, query } from "@vsf-enterprise/unified-api-magento";
import type { Cart } from "@vsf-enterprise/unified-api-magento/ecommerceTypes";

export const updateCartLineItem = defineApi.updateCartLineItem(async (context, args) => {
  const { api } = await context.getApiClient();
  if (args?.cartId != null) {
    throw context.createHttpError({
      message: "Multiple carts feature is not available.",
      statusCode: HttpStatusCode.FORBIDDEN,
    });
  }
  const cartId = getCartId(context);
  const { lineItemId, quantity } = args;
  const { normalizeCart } = getNormalizers(context);

  const data = await query(
    api.updateCartItems({
      cart_id: cartId,
      cart_items: [{ cart_item_uid: lineItemId, quantity }],
    }),
  );

  const isItemExists = data?.updateCartItems?.cart?.items?.some((item) => item?.uid === lineItemId);
  if (!isItemExists) {
    throw context.createHttpError({
      message: "Line item not found",
      statusCode: HttpStatusCode.NOT_FOUND,
    });
  }

  return normalizeCart(data?.updateCartItems?.cart as Cart);
});