Upgrade Login service.

src/login/login.service.ts

@@ -1,45 +1,10 @@
-var base64 = require('base64util');
+import { Injectable } from '@angular/core';
 
-var loginTmpl = require('./login.tmpl.html');
+import * as base64 from 'base64util';
 
-module.exports = function($storage, $http, authService, $modal) {
-    var login = function(email, password) {
-        // Encode authentication data.
-        var authdata = base64.encode(email + ':' + password);
-
-        return $http.post('/api/user/login', {}, {
-            ignoreAuthModule: true,
-            headers: {
-                'authorization': 'Basic ' + authdata
-            }
-        }).then(function (result) {
-            $storage.session.set('refresh_token', result.data.refresh_token);
-            $storage.session.set('access_token', result.data.access_token);
-
-            authService.loginConfirmed();
-        }, function(result) {
-            loginModal();
-        });
-    };
-
-    var loginModal = function () {
-        $storage.session.clear();
-
-        $modal({
-            templateUrl: loginTmpl,
-            controller: function($scope, $login) {
-                $scope.$login = function() {
-                    $scope.$hide();
-                    $login($scope.email, $scope.password);
-                };
-            },
-            locals: {
-                $login: login,
-            }
-        });
-    };
-
-    return {
-        'loginModal': loginModal,
-    };
+@Injectable()
+export class LoginService {
+    accessToken() {
+        return sessionStorage.getItem('access_token');
+    }
 };