Facebook-Clone/frontend/util/route_util.jsx

import React from 'react';
import { connect } from 'react-redux';
import { Redirect, Route, withRouter } from 'react-router-dom';

const Auth = ({component: Component, path, loggedIn, exact}) => (
  <Route path={path} exact={exact} render={(props) => (
    !loggedIn ? (
      <Component {...props} />
    ) : (
      <Redirect to="/" />
    )
  )}/>
);

const Protected = ({ component: Component, path, loggedIn, exact }) => {
  return (
    <Route path={path} exact={exact} render={(props) => {
        return ((loggedIn) ? (
          <Component {...props} />
          ) : (
            <Redirect to='/session' />
          )
        );
      }} />
  );
};
const mapStateToProps = state => {
  return {loggedIn: Boolean(state.session.id)};
};

export const AuthRoute = withRouter(connect(mapStateToProps)(Auth));
export const ProtectedRoute = withRouter(connect(mapStateToProps)(Protected));