server.js

///////////////////////////////////////////////////////////
//  Import modules
///////////////////////////////////////////////////////////
const express = require('express')
const cors = require('cors')
const path = require('path')
const bodyParser = require('body-parser')
const mongoose = require('mongoose')
const passport = require('passport')
const session = require('express-session')
const MongoStore = require('connect-mongo')(session)
const logger = require('morgan')
const favicon = require('serve-favicon')
require('dotenv').config({path: path.resolve(__dirname, '.env'), })

///////////////////////////////////////////////////////////
//  Configure and connect to MongoDB database
///////////////////////////////////////////////////////////
const dbconf = require('./db.js')
mongoose.Promise = global.Promise
mongoose.connect(dbconf.url, dbconf.options)

// The connection used by default for every model created using mongoose.model
const db = mongoose.connection
db.on('error', err => {
  console.error(`Mongoose default connection error: ${err}`) 
})
db.once('open', () => {
  console.info(`Mongoose default connection opened [${dbconf.db}]`)
})

const models = {
  User: require('./models/user')(mongoose),
  Poll: require('./models/poll')(mongoose),
}

///////////////////////////////////////////////////////////
//  Initialize Express and configure Middleware
///////////////////////////////////////////////////////////
const app = express()
app.set('port', process.env.PORT || 3000)

// Serve static files
app.use(express.static(path.join(__dirname, 'public')))
app.use(favicon(path.resolve(__dirname, 'public', 'images', 'favicon.ico')))

// Body parsing - parse application/x-www-form-urlencoded
app.use(bodyParser.urlencoded({ extended: false, }))

// Body parsing - parse json
app.use(bodyParser.json())

// Handle cross-site request
app.use(cors())

app.use(logger('dev'))

// Initialize Passport and enable persistent login sessions stored in mongodb
const sessionOptions = {
  secret: 'cmccormack-voting-app',
  resave: false,
  saveUninitialized: true,
  cookie: { secure: false, },
  store: new MongoStore({ mongooseConnection: db, }),
}
app.use(session(sessionOptions))
app.use(passport.initialize())
app.use(passport.session())

require('./passport/init')(passport, models)


///////////////////////////////////////////////////////////
//  Import Express Routes and call with Express app
///////////////////////////////////////////////////////////
const routes = require('./routes/routes.js')
routes(app, passport, models)


///////////////////////////////////////////////////////////
//  Start Express Server
///////////////////////////////////////////////////////////
const server = app.listen(app.get('port'), () => {
  const {port, address, } = server.address()
  console.info(`Express server started on ${address}:${port}`)
})