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 uuid = require('uuid');
var expressValidator = require('express-validator');
var passport = require('passport'); // to use open id features

// here we are adding some routes (path to them in project's directory), if we want to use them as separate files
var routes = require('./routes/index');
var survey = require('./routes/survey'); // this file should exist
var maintaining = require('./routes/maintaining');
var student = require('./routes/student');

var app = express();

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

// uncomment after placing your favicon in /public
// app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(passport.initialize()); // initializing passport to use open id
app.use(passport.session());    // passport also requires sessions
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(require('less-middleware')(path.join(__dirname, 'public')));
app.use(express.static(path.join(__dirname, 'public')));
app.use(expressValidator());
app.use(session({
    secret: uuid.v1(),
    resave: false,
    saveUninitialized: true
}));
app.use(function(req, res, next) { // to make session variable available in jade
    res.locals.session = req.session;
    next();
});
// here are some modules which available globally in our app

// and here we are stating our paths to routes in url access
app.use('/', routes);
app.use('/survey', survey);
app.use('/maintaining', maintaining);
app.use('/student', student);

// 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 handlers

// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
  app.use(function(err, req, res, next) {
    res.status(err.status || 500);
    res.render('error', {
      message: err.message,
      error: err
    });
  });
}

// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
  res.status(err.status || 500);
  res.render('error', {
    message: err.message,
    error: {}
  });
});


module.exports = app;