app.js

var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');

var index = require('./routes/index');
var admin = require('./routes/admin');
//var users = require('./routes/users');
var mongoose = require('mongoose');

var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'hbs');

// 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')));

if (app.get('env') == 'development') {
    var browserSync = require('browser-sync');
    var config = {
        files: ["public/**/*.{js,css}", "client/*.js", "sass/**/*.scss", "views/**/*.hbs"],
        logLevel: 'debug',
        logSnippet: false,
        reloadDelay: 3000,
        reloadOnRestart: true
    };
    var bs = browserSync(config);
    var cbs = require('connect-browser-sync');
    app.use(cbs(bs));
}

mongoose.connect('mongodb://127.0.0.1:27017/ecotour', { useMongoClient: true });
mongoose.Promise = global.Promise;

app.use('/', index);
app.use('/admin', admin);
//app.use('/users', users);

// 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;