added server auth and protected routes

src/components/ProtectedRoute/ProtectedRoute.js

@@ -0,0 +1,23 @@
+import React from 'react';
+import { useSelector } from 'react-redux'
+import { Route, Redirect } from 'react-router-dom';
+import { selectAuth } from '../../redux/outstaffingSlice';
+
+export const ProtectedRoute = ({ component: Component, ...rest }) => {
+    const isAuth = useSelector(selectAuth)
+    const existingToken = localStorage.getItem('auth_token')
+    const expiresAt = localStorage.getItem('access_token_expired_at')
+
+    const isTokenAlive = (existingToken && expiresAt && new Date(expiresAt).getTime() > (new Date()).getTime());
+    
+    return (
+        <Route
+            {...rest}
+            render={props =>
+            ( isAuth || isTokenAlive) ? (
+                <Component {...props} />
+            ) : <Redirect to='/auth' />
+            }
+        />
+    );
+  }