app.js

/**
 * Module dependencies.
 */
const express = require('express');
const compression = require('compression');
const session = require('express-session');
const bodyParser = require('body-parser');
const logger = require('morgan');
const chalk = require('chalk');
const errorHandler = require('errorhandler');
const lusca = require('lusca');
const dotenv = require('dotenv');
const MongoStore = require('connect-mongo')(session);
const flash = require('express-flash');
const path = require('path');
const mongoose = require('mongoose');
const expressValidator = require('express-validator');
const expressStatusMonitor = require('express-status-monitor');
const sass = require('node-sass-middleware');
const multer = require('multer');
const cookieParser = require('cookie-parser');
const browserify = require('browserify-middleware');
const http = require('http');
const socketio = require('socket.io');

/**
 * Load environment variables from .env file, where API keys and passwords are configured.
 */
dotenv.load({ path: '.env' });

/**
 * Controllers (route handlers).
 */
const homeController = require('./controllers/home');
const gameController = require('./controllers/game');
const answerController = require('./controllers/answer');

/**
 * Create Express server.
 */
const app = express();
const server = http.Server(app);
const io = socketio(server);

/**
 * Socket IO setup
 */
io.on('connection', gameController.handleSocket(io));

/**
 * Connect to MongoDB.
 */
mongoose.Promise = global.Promise;
mongoose.connect(process.env.MONGODB_URI || process.env.MONGOLAB_URI, { useMongoClient: true });
mongoose.connection.on('error', (err) => {
  console.error(err);
  console.log('%s MongoDB connection error. Please make sure MongoDB is running.', chalk.red('✗'));
  process.exit();
});

/**
 * Express configuration.
 */
app.set('host', process.env.OPENSHIFT_NODEJS_IP || '0.0.0.0');
app.set('port', process.env.PORT || process.env.OPENSHIFT_NODEJS_PORT || 8080);
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'pug');
app.use(expressStatusMonitor({ websocket: io, port: app.get('port') }));
app.use(compression());
app.use(sass({
  src: path.join(__dirname, 'public'),
  dest: path.join(__dirname, 'public')
}));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));
app.use(expressValidator());
app.use(session({
  resave: true,
  saveUninitialized: true,
  secret: process.env.SESSION_SECRET,
  store: new MongoStore({
    url: process.env.MONGODB_URI || process.env.MONGOLAB_URI,
    autoReconnect: true,
    clear_interval: 3600
  })
}));
app.use(flash());
app.use((req, res, next) => {
  if (req.path === '/intent') {
    next();
  } else {
    lusca.csrf()(req, res, next);
  }
});
app.use(lusca.xframe('SAMEORIGIN'));
app.use(lusca.xssProtection(true));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public'), { maxAge: 31557600000 }));
app.set('socketio', io);

/**
 * Primary app routes.
 */
app.get('/', homeController.index);
app.get('/new', gameController.getNew);
app.post('/new', gameController.postNew);
app.get('/join', gameController.getJoin);
app.post('/join', gameController.postJoin);
app.get('/game/:party', gameController.index);
app.get('/connect', gameController.connect);
app.get('/connected', gameController.connected);
app.post('/intent', answerController.getIntent);

/**
 * Error Handler.
 */
app.use(errorHandler());

/**
 * Start Express server.
 */
server.listen(app.get('port'), () => {
  console.log('%s App is running at http://localhost:%d in %s mode', chalk.green('✓'), app.get('port'), app.get('env'));
  console.log('  Press CTRL-C to stop\n');
});

module.exports = app;