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 session = require('express-session');
var multer = require('multer');
var mongoose = require('mongoose');
var upload = multer({ dest: 'uploads/' })
var moment = require('moment');
var expressValidator = require('express-validator');
var flash = require('connect-flash');
var messages = require("express-messages");
var passport = require('passport');
var LocalStrategy = require('passport-local').Strategy;
var mongo = require('mongodb');
mongoose.connect('localhost:27017/discussionforum');
var db = mongoose.connection;



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

var app = express();

// 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(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

//express session
app.use(session({
	secret: 'secret',
	saveUninitialized: true,
	resave: true
}));

// Passport init
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
    };
  }
}));

//connect flash
app.use(flash());
app.use(function (req, res, next) {
  res.locals.messages = messages(req, res);
  next();
});



// Make db accessible to our router
app.use(function(req,res,next){
	req.db = db;
	next();
});

// 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;
  res.locals.isauth = 0;
  res.locals.str = "";
  res.locals.arr = [];
  res.locals.l = 0;
  res.locals.flag = -1;



  next();
});

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