index.js

/* eslint-disable no-undef */
const path = require('path');
var cas = require('connect-cas');
const express = require('express');
const cookieParser = require('cookie-parser');
const cookieSession = require('cookie-session');

var url = require('url');

const app = express();

// Serve the static files from the React app
app.use(express.static(path.join(__dirname, 'build')));
cas.configure({ 'host': 'login.marist.edu' });

app.use(cookieParser('this should be random and secure'));
app.use(cookieSession({
  name: 'session',
  secret: 'osnonsco'
}));


app.get('/login', cas.serviceValidate(), cas.authenticate(), (req, res) => {
  // Great, we logged in, now redirect back to the home page.
  res.cookie('cwid', req.session.cas.user.split('@')[0])
  return res.redirect('/');
});

app.get('/logout', (req, res) => {
    res.clearCookie('cwid');
    if (!req.session) {
        return res.redirect('/');
    }
    
    // Forget our own login session
    if (req.session.destroy) {
            req.session.destroy()
    } else {
        // Cookie-based sessions have no destroy()
        req.session = null;
    }
    // Send the user to the official campus-wide logout URL
    var options = cas.configure();
    options.pathname = options.paths.logout;
    return res.redirect(url.format(options));
});  

// Handles any requests
app.get('*', (req, res) => {
  if (req.session.cas && req.session.cas.user) {
    res.cookie('cwid', req.session.cas.user.split('@')[0])
    
    res.sendFile(path.join(__dirname+'/build/index.html'));
  } else {
    return res.redirect('/login');
  }
});

const http_port = 3000;
app.listen(http_port);

console.log(`App is listening on port ${http_port}`);