create new middleware

@@ -16,6 +16,13 @@ export const getUserId = (context) => {
   throw new Error("There is no vaild user");
 };
 
+export const isAuthenticated = (request) => {
+  if (!request.user) {
+    throw new Error("You need to login First");
+  }
+  return;
+};
+
 export const generateSecret = () => {
   const randomNumber = Math.floor(Math.random() * adjectives.length);
   return `${adjectives[randomNumber]} ${nouns[randomNumber]}`;