server.js

const path = require('path');
const express = require('express');
const session = require('express-session');
const exphbs = require('express-handlebars');
const routes = require('./controllers');
const helpers = require('./utils/helpers');

const sequelize = require('./config/connection');
const SequelizeStore = require('connect-session-sequelize')(session.Store);

const app = express();
const PORT = process.env.PORT || 3001;

// Set up Handlebars.js engine with custom helpers
const hbs = exphbs.create({ helpers });

const sess = {
  secret: 'Super secret secret',
  cookie: {},
  resave: false,
  saveUninitialized: true,
  store: new SequelizeStore({
    db: sequelize
  })
};

app.use(session(sess));

// Inform Express.js on which template engine to use
app.engine('handlebars', hbs.engine);
app.set('view engine', 'handlebars');

app.use(express.json());
app.use(express.urlencoded({ extended: true }));
app.use(express.static(path.join(__dirname, 'public')));

app.use(routes);

// sequelize.sync({ force: false }).then(() => {
//   app.listen(PORT, () => console.log('Now listening'));
// });

const http = require('http');
const server = http.createServer(app);
const { Server } = require("socket.io");
const { getHeapSpaceStatistics } = require('v8');
const io = new Server(server);

io.on('connection', (socket) => {
  socket.on('chat message', (msg) => {
    io.emit('chat message', msg);
  });
});

io.emit('some event', { someProperty: 'some value', otherProperty: 'other value' });

server.listen(PORT, () => {
  console.log(`listening on ${PORT}`);
});