server.js

/* eslint-disable no-console */

'use strict';

/** *********************************
**** node module defined here *****
********************************** */
require('dotenv').config();
const EXPRESS = require('express');
const http = require('http');
const process = require('process');
const { SERVER } = require('./config');

/** creating express server app for server. */
const app = EXPRESS();

/** ******************************
***** Server Configuration *****
******************************* */
const server = http.Server(app);
global.io = require('socket.io')(server, {
  cors: {
    origin: '*',
    methods: ['GET', 'POST'],
  },
});

/** Server is running here */
const startNodeserver = async () => {
  // initialize mongo
  await require('./app/startup/db_mongo')();

  // initialize redis
  await require('./app/startup/db_redis')();

  // initialize daemons(cronjobs)
  // await require('./app/startup/daemon').start();

  await require('./app/startup/socket').connect(global.io);

  await require('./app/startup/expressStartup')(app); // express startup.
  return new Promise((resolve, reject) => {
    server.listen(SERVER.PORT, (err) => {
      if (err) reject(err);
      resolve();
    });
  });
};

startNodeserver().then(() => {
  console.log(`Worker thread ${process.pid} is running`);
  console.log('Node server running on', SERVER.URL);
}).catch((err) => {
  console.log('Error in starting server', err);
  process.exit(1);
});