Remove 'var' keyword from server code

[vchess.git] / server / bin / www

#!/usr/bin/env node

/**
 * Module dependencies.
 */

let app = require('../app');
const debug = require('debug')('vc:server');
const http = require('http');

/**
 * Get port from environment and store in Express.
 */

const port = normalizePort(process.env.PORT || '3000');
app.set('port', port);

/**
 * Create HTTP server.
 */

let server = http.createServer(app);

/*
 * CRON tasks
 */

let cron = require('node-cron');
const UserModel = require("../models/User");
const GameModel = require("../models/Game");
cron.schedule('0 0 0 * * *', function() {
  // Remove unlogged users and unstarted games every 24h
  UserModel.cleanUsersDb();
  GameModel.cleanGamesDb();
});

/**
 * Listen on provided port, on all network interfaces.
 */

server.listen(port);
server.on('error', onError);
server.on('listening', onListening);

/*
 * Sockets handling
 */

const WebSocket = require('ws');
const wss = new WebSocket.Server({ server: server });
require('../sockets')(wss);

/**
 * Normalize a port into a number, string, or false.
 */

function normalizePort(val) {
  const parsedPort = parseInt(val, 10);

  if (isNaN(parsedPort)) {
    // named pipe
    return val;
  }

  if (parsedPort >= 0) {
    // port number
    return parsedPort;
  }

  return false;
}

/**
 * Event listener for HTTP server "error" event.
 */

function onError(error) {
  if (error.syscall !== 'listen') {
    throw error;
  }

  const bind = typeof port === 'string'
    ? 'Pipe ' + port
    : 'Port ' + port;

  // handle specific listen errors with friendly messages
  switch (error.code) {
    case 'EACCES':
      console.error(bind + ' requires elevated privileges');
      process.exit(1);
      break;
    case 'EADDRINUSE':
      console.error(bind + ' is already in use');
      process.exit(1);
      break;
    default:
      throw error;
  }
}

/**
 * Event listener for HTTP server "listening" event.
 */

function onListening() {
  const addr = server.address();
  const bind = typeof addr === 'string'
    ? 'pipe ' + addr
    : 'port ' + addr.port;
  debug('Listening on ' + bind);
}