Untitled

var express = require('express');
var bodyParser = require('body-parser');
var sessions = require('client-sessions');
var app = express();
var calcVal;

app.use(express.static(__dirname + '/www/views'));

app.set('views', __dirname + '/www/views');
app.engine('html', require('ejs').renderFile);
app.set('view engine', 'html');

app.use(bodyParser.urlencoded({ extended: true}));
app.use(sessions({
    cookieName: 'session',
    path    : '/',
    secret: 'sadsadcdmasmkvmdsa',
    duration: 30*60*1000,
    activeDuration: 5*60*1000
}));

app.get('/', function(req, res){
    res.render('index.html');
});

app.post('/', function(req, res){
    if(req.body.user === 'admin' && req.body.pass === 'admin'){
        req.session.user = req.body.user;
        req.session.pass = req.body.pass;
    } else {
        req.session.reset();
        calcVal = null;
    }
    res.render('index.html');
});

app.get('/isLogedIn', function(req, res){
    if(req.session && req.session.user === 'admin' && req.session.pass ===      'admin'){
        res.send('logedIn');
    }
});

app.get('/calculator', function(req, res){
    res.send(calcVal);
});

app.post('/calculator', function(req, res) {
    calcVal = req.body.display;
});

app.listen(8080, function(){
        console.log('Server running on 8080...');
});

<!DOCTYPE html>
<html ng-app="scotchApp">

<head>
  <link rel="stylesheet"     href="//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css" />
  <link rel="stylesheet" href="//netdna.bootstrapcdn.com/font-    awesome/4.0.0/css/font-awesome.css" />
  <script src="//ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js">    </script>
  <script     src="//netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>
  <script      src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.10/angular.min.js">     </script>
   <script      src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.10/angular-  route.min.js"></script>

</head>

<body ng-controller="profileController">

  <nav class="navbar navbar-default">
      <div class="container">
          <ul class="nav navbar-nav navbar-center-left">
            <li><a href="#"><i class="fa fa-home"></i> Profile</a></li>
            <li><a href="#calculator"><i class="fa fa-shield"></i>      Calculator</a></li>
            <li><a href="#readme"><i class="fa fa-comment"></i> Readme</a>     </li>
          </ul>
          <ul class="nav navbar-nav navbar-right">
           <form method="post" action="/" id="loginForm">
              <label for="user">Username: </label>
              <input type="text" name="user"/>
              <label for="pass">Password: </label>
              <input type="pass" name="pass"/>
              <input type="submit" id="loginButton" value="Login"/>
            </form>
           </ul>
        </div>
   </nav>

   <div id="main">
      <div ng-view></div>
  </div>

  <script>
    var scotchApp = angular.module('scotchApp', ['ngRoute']);
    scotchApp.config(function($routeProvider) {
        $.get('/isLogedIn', function(res) {
            if(res === 'logedIn'){
                 $('#loginForm').replaceWith('<form method="post" action="/"      id="logoutForm"><input type="submit" id="logoutButton" value="logout"/>     </form>');
                $routeProvider.when('/', {
                    templateUrl : 'pages/profile.html',
                    controller  : 'profileController'
                })
                .when('/calculator', {
                    templateUrl :  'pages/calculator.html',
                    controller  : 'calculatorController'
                })
                .when('/readme', {
                    templateUrl : 'pages/readme.html',
                    controller  : 'readmeController'
                });
            } else {
                 $routeProvider.when('/', {
                     templateUrl : 'pages/profile.html',
                     controller  : 'profileController'
                })
                .when('/calculator', {
                    templateUrl :  'pages/profile.html',
                    controller  : 'calculatorController'
                 })
                .when('/readme', {
                    templateUrl : 'pages/readme.html',
                    controller  : 'readmeController'
                 });
            }
        });
    });
    scotchApp.controller('profileController', function($scope) {});
    scotchApp.controller('calculatorController', function($scope) {});
    scotchApp.controller('readmeController', function($scope) {});
    </script>
    </body>
 </html>