app.js file

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 session = require("express-session");
var multer = require("multer");
var flash = require("connect-flash");
var hbs = require("express-handlebars");
var passport = require("passport");
var LocalStrategy = require("passport-local").Strategy;
var expressValidator = require("express-validator");
var mongodb = require("mongodb");
var mongoose = require("mongoose");
mongoose.connect("mongodb://localhost/store2");
var db = mongoose.connection;
require("./config/users/passport");
require("./secrets/secret");
var index = require('./routes/index');
var buyer = require('./routes/users/buyers/buyer');

var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.engine("hbs", hbs({defaultLayout: "layout", extname: "hbs"}));
app.set('view engine', 'hbs');
// handle multer
var upload = multer({dest: "uploads/"});
// 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 }));
// handle express session and passport
app.use(session({secret: "max", saveUninitialized: true, resave: true}));
app.use(passport.initialize());
app.use(passport.session());
//express validator
app.use(expressValidator({
  errorFormatter: function(param, msg, value) {
      var namespace = param.split('.')
      , root    = namespace.shift()
      , formParam = root;

    while(namespace.length) {
      formParam += '[' + namespace.shift() + ']';
    }
    return {
      param : formParam,
      msg   : msg,
      value : value
    };
  }
}));
// cookie parser
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use(flash());
app.use(function (req, res, next) {
    "use strict";
    res.locals.message = require("express-messages")(req, res);
    next();
});
/*app.use(function (req, res, next) {
    "use strict";
    res.locals.success_msg = req.flash("success_msg");
    res.locals.error_msg = req.flash("error_msg");
    res.locals.error = req.flash("error");
    return next();
});*/
app.use('/', index);
app.use('/buyer', buyer);

// 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;