app.js

var express = require('express');
var path = require('path');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var mongoose = require('mongoose');
mongoose.connect("mongodb://uwtextbooks:caliorbust2018@ds039155.mlab.com:39155/uwtextbooks", {
      useMongoClient: true
});
var db = mongoose.connection;
var passport = require('passport');
var LocalStrategy = require('passport-local').Strategy;
var expressValidator = require('express-validator');
var expressSession = require('express-session');
var flash = require('connect-flash');
var index = require('./routes/index');
var submit = require('./routes/submit');
var users = require('./routes/users');
var sell = require('./routes/sell');
var messages = require('./routes/messages');
var app = express();

// MongoDB
var mongo = require('mongodb');

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');
// 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(expressValidator());
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

// Express Session Middleware
app.use(expressSession({secret: 'Conrad', saveUninitialized: false, resave: false}));

// Passport init
app.use(passport.initialize());
app.use(passport.session());

// Connect Flash Middleware
app.use(flash());

// Global Vars
app.use(function(req, res, next){
    res.locals.success_msg = req.flash('success_msg');
    res.locals.error_msg = req.flash('error_msg');
    res.locals.error = req.flash('error');
    res.locals.user = req.user || null;
    next();
});

// Routes
app.use('/', index);
app.use('/submit', submit);
app.use('/users', users);
app.use('/sell', sell);
app.use('/messages', messages);

// 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', {
        title: "Error"
    });
});

module.exports = app;