{
  "name": "***",
  "version": "0.0.0",
  "private": true,
  "scripts": {
    "start": "node app.js",
    "monitor": "nodemon app.js",
    "deploy": "gcloud app deploy app.yaml"
  },
  "dependencies": {
    "async": "^2.1.5",
    "body-parser": "^1.13.3",
    "cookie-parser": "^1.3.5",
    "crypto": "0.0.3",
    "debug": "~2.2.0",
    "express": "^4.13.4",
    "express-mysql-session": "^1.2.0",
    "express-session": "^1.15.1",
    "helmet": "^3.5.0",
    "moment": "^2.18.1",
    "morgan": "~1.6.1",
    "mysql": "^2.13.0",
    "nconf": "^0.8.4",
    "password-hash": "^1.2.2",
    "prompt": "^1.0.0",
    "pug": "^2.0.0-beta11",
    "serve-favicon": "~2.3.0",
    "socket.io": "^1.7.3"
  }
}

service: default
env: flex
runtime: nodejs
env_variables:
  NODE_ENV: production
  MYSQL_USER: ***
  MYSQL_PASSWORD: ***
  INSTANCE_CONNECTION_NAME: ***:us-central1:***
beta_settings:
  cloud_sql_instances: ***:us-central1:***

var nconf = module.exports = require('nconf');
var path = require('path');

nconf.argv().env([
    'NODE_ENV',
    'DATA_BACKEND',
    'GCLOUD_PROJECT',
    'MYSQL_USER',
    'MYSQL_PASSWORD',
    'INSTANCE_CONNECTION_NAME',
    'PORT'
])
.file({ file: path.join(__dirname, 'config.json')})
.defaults({
    DATA_BACKEND: 'cloudsql',
    GCLOUD_PROJECT: '***',
    MYSQL_USER: '***',
    MYSQL_PASSWORD: '***',
    INSTANCE_CONNECTION_NAME: '***:us-central1:***',
    PORT: 8080
});

checkConfig('GCLOUD_PROJECT');

if (nconf.get('DATA_BACKEND') === 'cloudsql') {
    checkConfig('MYSQL_USER');
    checkConfig('MYSQL_PASSWORD');
    if (nconf.get('NODE_ENV') === 'production') {
        checkConfig('INSTANCE_CONNECTION_NAME');
    }
}

function checkConfig (setting) {
  if (!nconf.get(setting)) {
      throw new Error('You must set ' + setting + 'as an environment variable or in config.json!');
  }
}

var express = require('express');
var session = require('express-session');
var MySQLStore = require('express-mysql-session')(session);
...
var helmet = require('helmet');

var routes = require('./routes/index');
...

var app = express();

var config = require('./config');
...

var port = process.env.PORT || 8080;


app.set('port', port);
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'pug');
app.set('trust proxy', true);
// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));

app.use(express.static(path.join(__dirname, 'public')));

app.use(helmet());
...

var options = {
    user: config.get('MYSQL_USER'),
    password: config.get('MYSQL_PASSWORD'),
    database: ''***',',
    checkExpirationInterval: 900000,
    expiration: 186400 * 365
};
if (config.get('NODE_ENV') === "production") {
    options.socketPath = '/cloudsql/' + config.get('INSTANCE_CONNECTION_NAME');
} else {
    options.host = ''***',';
}

var sessionStore = new MySQLStore(options);
app.use(session({
    key: '***', // 세션키
    secret: ''***',', // 비밀키
    saveUninitialized: false,
    resave: true,
    store: sessionStore,
    cookie: {
        expires: new Date() + 186400 * 365,
        maxAge: 186400 * 365 // 쿠키 유효기간 1년
    }
}));

app.use('/', routes);
...

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  var err = new Error('Not Found');
  err.status = 404;
  next(err);
});

// error handlers

// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
  app.use(function(err, req, res, next) {
    res.status(err.status || 500);
    res.render('error', {
      message: err.message,
      error: err
    });
  });
}

// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
  res.status(err.status || 500);
  res.render('error', {
    message: err.message,
    error: {}
  });
});

// Socket.io
var server = require('http').createServer(app);
var io = require('socket.io').listen(server);
server.listen(3000);

io.sockets.on('connection', function(socket) {
    ...
});

app.listen(port);