app.js

var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
const io = require('socket.io')();
var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');

var app = express();




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

const port = 8000;
io.listen(port);
console.log('listening on port ', port);

app.set( 'port', ( process.env.PORT || 5000 ));

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

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

if (process.env.NODE_ENV === 'production') {
  app.use(express.static('client/build'));
}

app.use('/', indexRouter);
app.use('/users', usersRouter);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;