server.js

const express       = require('express');
const cookieSession = require('cookie-session');
const passport      = require('passport');
const authRoutes    = require('./routes/authRoutes');
const notesRoutes   = require('./routes/notesRoutes');
const profileRoutes = require('./routes/profileRoutes');
const practiseRoutes= require('./routes/practiseRoutes');
const contestRoutes = require('./routes/contestRoutes');
const followingRoutes = require('./routes/followingRoutes');
const articlesRoutes= require('./routes/articlesRoutes');
const passportSetup = require('./config/passportSetup');
const mongoose      = require('mongoose');
const keys          = require('./config/keys');

mongoose.promise = global.promise;

const app = express();

app.use(express.static('public'));

// set view engine
app.set('view engine', 'ejs');

// set up session cookies
app.use(cookieSession({
    maxAge: 30 * 24 * 60 * 60 * 1000, // Cookie for 30 days
    keys: [keys.session.cookieKey]
}));

// initialize passport
app.use(passport.initialize());
app.use(passport.session());

// connect to mongodb
mongoose.connect(keys.mongodb.dbURI,{ useNewUrlParser: true }, function(err) {
  if(err)
  {
    throw err;
    process.exit(0);
  }

  console.log('connected to mongodb');
});

// set up routes
app.use('/auth', authRoutes);
app.use('/profile', profileRoutes);
app.use('/notes', notesRoutes);
app.use('/contests',contestRoutes);
app.use('/practise',practiseRoutes);
app.use('/following',followingRoutes);
app.use('/articles',articlesRoutes);

app.get('/', function(req, res){
  if(req.user)
  {
      res.redirect('/practise/');
  }
  else
  {
      res.sendFile(__dirname + '/public/html/index.html');
  }
});

app.get('/error.html', function(req, res){
  res.status(400);
  res.sendFile(__dirname + '/public/html/error.html');
});

const port = process.env.port || 80;

app.listen(port, function(){
  console.log("App listening on port " + port);
})