Update UserContext to use util parseJwt

Author: jmsandiegoo

frontend/src/contexts/UserContext.tsx

@@ -1,5 +1,6 @@
 "use client";
 
+import { parseJwt } from "@/lib/auth";
 import {
   AccessToken,
   AccessTokenPayload,
@@ -34,17 +35,3 @@ export function UserProvider({ children }: PropsWithChildren) {
 export function useUser() {
   return useContext(UserContext);
 }
-
-function parseJwt(token: AccessToken): AccessTokenPayload {
-  const base64Url = token.split(".")[1];
-  const base64 = base64Url.replace(/-/g, "+").replace(/_/g, "/");
-  const jsonPayload = decodeURIComponent(
-    atob(base64)
-      .split("")
-      .map((c) => {
-        return "%" + ("00" + c.charCodeAt(0).toString(16)).slice(-2);
-      })
-      .join("")
-  );
-  return AccessTokenPayloadSchema.parse(JSON.parse(jsonPayload));
-}