Advanced Node and Express - Set up the Environment

client.js

// This file's full path is /public/client.js
$(document).ready(function () {
  /* Global io */
  let socket = io();

  // Form submittion with new message in field with id 'm'
  $('form').submit(function () {
    let messageToSend = $('#m').val();
    // Send message to server here?
    $('#m').val('');
    return false; // Prevent form submit from refreshing page
  });
});

routes.js

const passport = require('passport');
const bcrypt = require('bcrypt');

module.exports = function (app, myDataBase) {
  app.route('/').get((req, res) => {
    // Change the response to render the Pug template
    res.render('pug', { title: 'Connected to Database', message: 'Please login', showLogin: true, showRegistration: true, showSocialAuth: true });
  });
  app.route('/login').post(passport.authenticate('local', { failureRedirect: '/' }), (req, res) => {
    res.redirect('/profile');
  });
  app.route('/profile').get(ensureAuthenticated, (req, res) => {
    res.render('pug/profile', { username: req.user.username });
  });
  app.route('/chat').get(ensureAuthenticated, (req, res) => {
    res.render('pug/chat', { user: req.user });
  });
  app.route('/logout').get((req, res) => {
    req.logout();
    res.redirect('/');
  });
  app.route('/register').post(
    (req, res, next) => {
      const hash = bcrypt.hashSync(req.body.password, 12);
      myDataBase.findOne({ username: req.body.username }, function (err, user) {
        if (err) {
          next(err);
        } else if (user) {
          res.redirect('/');
        } else {
          myDataBase.insertOne({ username: req.body.username, password: hash }, (err, doc) => {
            if (err) {
              res.redirect('/');
            } else {
              next(null, doc.ops[0]);
            }
          });
        }
      });
    },
    passport.authenticate('local', { failureRedirect: '/' }),
    (req, res, next) => {
      res.redirect('/profile');
    }
  );

  app.route('/auth/github').get(passport.authenticate('github'));
  app.route('/auth/github/callback').get(passport.authenticate('github', { failureRedirect: '/' }), (req, res) => {
    req.session.user_id = req.user.id;
    res.redirect('/chat');
  });

  app.use((req, res, next) => {
    res.status(404).type('text').send('Not Found');
  });
};

function ensureAuthenticated(req, res, next) {
  if (req.isAuthenticated()) {
    return next();
  }
  res.redirect('/');
}

server.js

'use strict';
require('dotenv').config();
const express = require('express');
const myDB = require('./connection');
const fccTesting = require('./freeCodeCamp/fcctesting.js');
const session = require('express-session');
const passport = require('passport');
const routes = require('./routes');
const auth = require('./auth.js');

const app = express();
const http = require('http').createServer(app);
const io = require('socket.io')(http);

app.set('view engine', 'pug');

fccTesting(app); // For fCC testing purposes
app.use('/public', express.static(process.cwd() + '/public'));
app.use(express.json());
app.use(express.urlencoded({ extended: true }));

app.use(session({
  secret: process.env.SESSION_SECRET,
  resave: true,
  saveUninitialized: true,
  cookie: { secure: false },
}));

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

myDB(async (client) => {
  const myDataBase = await client.db('database').collection('users');

  routes(app, myDataBase);
  auth(app, myDataBase);

  io.on('connection', (socket) => {
    console.log('A user has connected');
  });
}).catch((e) => {
  app.route('/').get((req, res) => {
    res.render('pug', { title: e, message: 'Unable to login' });
  });
});

http.listen(process.env.PORT || 3000, () => {
  console.log('Listening on port ' + process.env.PORT);
});