app.js

const express = require('express')
const path = require('path')
const favicon = require('serve-favicon')
const logger = require('morgan')
const cookieParser = require('cookie-parser')
const bodyParser = require('body-parser')
const config = require('./config')
const mongoose = require('mongoose');

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

var app = express()

// Connect mongoDB with mongoose
mongoose.connect(config.db.mongoDB, { useMongoClient: true })
var db = mongoose.connection;
db.on('error', console.error.bind(console, 'Connect mongoDB error'))
db.once('open', function () {
    console.log('Connect mongoDB is successfully')
})

// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'))
app.use(bodyParser.json())
app.use(bodyParser.urlencoded({ extended: false }))
app.use(cookieParser())
app.use(express.static(path.join(__dirname, 'public')))

app.use('/api/v1/', index)
app.use('/api/v1/auth/', auth)

// 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 handler
app.use(function (err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message
  res.locals.error = req.app.get('env') === 'development' ? err : {}

  // render the error page
  res.status(err.status || 500)
  res.render('error')
})

module.exports = app