server.js

const express = require('express');
const next = require('next');
let session = require('cookie-session')
    
const dev = process.env.NODE_ENV !== 'production';
const app = next({ dev });
const handle = app.getRequestHandler();
var CentralAuthenticationService = require('cas');


app.prepare()
    .then(() => {
        const server = express();
        var casURL = 'https://fed.princeton.edu/cas/'
        var cas = new CentralAuthenticationService({
          base_url: casURL,
          service: "http://ec2-18-224-19-243.us-east-2.compute.amazonaws.com" + "/verify"
        })
        server.use(session({
          secret: 'abcdefghijklmnop',
          maxAge: 24 * 60 * 60 * 1000 * 365, 
          cookie: { secure: false }
        }))
        server.set('json spaces', 2);
                    
        server.get('/login', function (req, res) {
          // Save the user's redirection destination to a cookie
          if (typeof (req.query.redirect) === 'string') {
                req.session.redirect = req.query.redirect
              }
          // Redirect the user to the CAS server
          res.redirect(casURL + 'login?service=' + "http://ec2-18-224-19-243.us-east-2.compute.amazonaws.com/verify")

        })
        server.get('/logout', function (req, res) {
          req.session = null
          res.cookie('netid', null)
          res.redirect(casURL + 'logout?url=http://ec2-18-224-19-243.us-east-2.compute.amazonaws.com')
        })
        server.get('/verify', function(req, res) {
          // Check if the user has a redirection destination
          let redirectDestination = req.session.redirect || '/'
          // If the user already has a valid CAS session then send them to their destination
          if (req.session.cas) {
            res.redirect(redirectDestination)
            return
          }
          var ticket = req.query.ticket

          // If the user does not have a ticket then send them to the homepage
          if (typeof (ticket) === 'undefined') {
            res.redirect('/')
            return
          }
          // Check if the user's ticket is valid
          cas.validate(ticket, function (err, status, netid) {
            if (err) {
              console.log(err)
              res.sendStatus(500)
              return
            }
              req.session.cas = {
                    status: status,
                    netid: netid
              }; 
              res.cookie('netid', netid)
              //req.session.cookie.netid = netid;
              res.redirect(redirectDestination);
         }) });
        server.get('/eventOrganizerRegister', function(req, res){
          return handle(req, res);
        });
        server.get('/test', function (req, res) {
          res.send({yo: req.session.cas.netid});
        });

        server.get('/netid', function (req, res) {
          // Save the user's redirection destination to a cookie
          if (req.session.cas) {
            res.send({netid: req.session.cas.netid});
            //console.log("yeeeeeeeeeeeet");
          }
          else res.redirect("/login?redirect=/")
        })        
        server.get('/', function (req, res) {
            res.redirect("http://ec2-18-218-99-159.us-east-2.compute.amazonaws.com")
        })

        server.get('*/bootstrap.css', 
            function (req, res) {
                return handle(req, res);
            }
        )
        server.get('/static/background.jpg', 
            function (req, res) {
                return handle(req, res);
            }
        )
        server.get('*', function (req, res) {
            if (req.session.cas){
                return handle(req, res);
            }
            res.redirect("/login?redirect=/")            
        }) 

        server.set('views', '/views');
        server.set('view engine', 'js');
        server.engine('js', require('express-react-views').createEngine()); 

            
        server.listen(process.env.PORT || 3000, (err) => {
            if (err) {
                throw err;
            }
            //console.log('> Ready on http://localhost:3000');
        });

    })
    .catch((ex) => {
        console.error(ex.stack);
        process.exit(1);
    });