Adding page to view currently uploaded members, as well as verifying admin is logged in

client/src/pages/AdminMembers.js

@@ -1,10 +1,22 @@
-import React, { useState } from "react";
+import React, { useState, useEffect } from "react";
+import { useNavigate } from 'react-router';
 
 export default function AdminMembers() {
   const [year, setYear] = useState("");
   const [file, setFile] = useState(null);
   const [status, setStatus] = useState("");
 
+  const navigate = useNavigate();
+  
+  const isAdmin = () => {
+    return localStorage.getItem('adminToken') !== null;
+  };
+
+  if (!isAdmin()) {
+    navigate('/admin-login');
+    return <div>Redirecting...</div>;
+  }
+
   const handleSubmit = async (e) => {
     e.preventDefault();