in progress: connecting new service providers to express api

services/CartService.js

@@ -7,4 +7,13 @@ module.exports = class CartService {
         const result = await CartInstance.create(userid);
         if (!result) throw createError();
     }
+
+    async getCart(userid) {
+        const result = await CartInstance.findOneByUserId(userid);
+    }
+
+    async addItem(userid, item) {
+        const cart = await CartInstance.findOneByUserId(userid);
+        const item = "await CartProductInstance.create(item)";
+    }
 }