text: ﻿(function () {
      'use strict';
  
      angular
          .module('app')
          .factory('AuthenticationService', AuthenticationService);
  
      AuthenticationService.$inject = ['$http', '$cookieStore', '$rootScope', '$timeout', 'UserService', '$log'];
      function AuthenticationService($http, $cookieStore, $rootScope, $timeout, UserService, $log) {
          var service = {};
          $rootScope.userLogged = [];
          service.Login = Login;
          service.SetCredentials = SetCredentials;
          service.ClearCredentials = ClearCredentials;
  
          return service;
  
          function Login(username, password, callback) {
  
              /* Dummy authentication for testing, uses $timeout to simulate api call
               ----------------------------------------------*/
              /*$timeout(function () {
                  var response;
                  UserService.GetByUsername(username)
                      .then(function (user) {
                          if (user !== null && user.password === password) {
                              response = { success: true };
                          } else {
                              response = { success: false, message: 'Username or password is incorrect' };
                          }
                          callback(response);
                      });
              }, 1000);*/
  
              /* Use this for real authentication
               ----------------------------------------------*/
                        
              $http.post('/api/authenticate', { username: username, password: password })
                  .success(function (response) {
                       if (response !== null) {
                              response = { success: true };
                          } else {
                              response = { success: false, message: 'Username or password is incorrect' };
                          }
                      callback(response);
                  }).error(function(response){
                      //if(response.status == 404){
                          response = { success: false, message: 'Username or password is incorrect' };
                          callback(response);
                     //  }
                  });
  
          }
  
          function SetCredentials(username, password) {
              var authdata = Base64.encode(username + ':' + password);
              
              $rootScope.globals = {
                  currentUser: {
                      username: username,
                      authdata: authdata
                  }
              };
              $rootScope.userLogged.push(username);
  
              $http.defaults.headers.common['Authorization'] = 'Basic ' + authdata; // jshint ignore:line
              $cookieStore.put('globals', $rootScope.globals);
          }
  
          function ClearCredentials() {
              $rootScope.globals = {};
              $cookieStore.remove('globals');
              $http.defaults.headers.common.Authorization = 'Basic';
          }
      }
  
      // Base64 encoding service used by AuthenticationService
      var Base64 = {
  
          keyStr: 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=',
  
          encode: function (input) {
              var output = "";
              var chr1, chr2, chr3 = "";
              var enc1, enc2, enc3, enc4 = "";
              var i = 0;
  
              do {
                  chr1 = input.charCodeAt(i++);
                  chr2 = input.charCodeAt(i++);
                  chr3 = input.charCodeAt(i++);
  
                  enc1 = chr1 >> 2;
                  enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);
                  enc3 = ((chr2 & 15) << 2) | (chr3 >> 6);
                  enc4 = chr3 & 63;
  
                  if (isNaN(chr2)) {
                      enc3 = enc4 = 64;
                  } else if (isNaN(chr3)) {
                      enc4 = 64;
                  }
  
                  output = output +
                      this.keyStr.charAt(enc1) +
                      this.keyStr.charAt(enc2) +
                      this.keyStr.charAt(enc3) +
                      this.keyStr.charAt(enc4);
                  chr1 = chr2 = chr3 = "";
                  enc1 = enc2 = enc3 = enc4 = "";
              } while (i < input.length);
  
              return output;
          },
  
          decode: function (input) {
              var output = "";
              var chr1, chr2, chr3 = "";
              var enc1, enc2, enc3, enc4 = "";
              var i = 0;
  
              // remove all characters that are not A-Z, a-z, 0-9, +, /, or =
              var base64test = /[^A-Za-z0-9\+\/\=]/g;
              if (base64test.exec(input)) {
                  window.alert("There were invalid base64 characters in the input text.\n" +
                      "Valid base64 characters are A-Z, a-z, 0-9, '+', '/',and '='\n" +
                      "Expect errors in decoding.");
              }
              input = input.replace(/[^A-Za-z0-9\+\/\=]/g, "");
  
              do {
                  enc1 = this.keyStr.indexOf(input.charAt(i++));
                  enc2 = this.keyStr.indexOf(input.charAt(i++));
                  enc3 = this.keyStr.indexOf(input.charAt(i++));
                  enc4 = this.keyStr.indexOf(input.charAt(i++));
  
                  chr1 = (enc1 << 2) | (enc2 >> 4);
                  chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
                  chr3 = ((enc3 & 3) << 6) | enc4;
  
                  output = output + String.fromCharCode(chr1);
  
                  if (enc3 != 64) {
                      output = output + String.fromCharCode(chr2);
                  }
                  if (enc4 != 64) {
                      output = output + String.fromCharCode(chr3);
                  }
  
                  chr1 = chr2 = chr3 = "";
                  enc1 = enc2 = enc3 = enc4 = "";
  
              } while (i < input.length);
  
              return output;
          }
      };
  
  })();