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define(['angular', 'services'], function (angular) {
    'use strict';

    return angular.module('myApp.controllers', ['myApp.services'])
        .controller('IndexCtrl', ['$scope', 'googleService', function ($scope, googleService) {

            $scope.login = function () {
                googleService.login().then(function (data) {
                    // do something with returned data
                    console.log(data.email);
                }, function (err) {
                    console.log('Failed: ' + err);
                });
            };


        }]);
});

define(['angular'], function (angular) {
    'use strict';

    angular.module('myApp.services', [])
        .service('googleService', ['$http', '$rootScope', '$q', function ($http, $rootScope, $q) {
            var clientId = '{CLIENT_ID}',
                apiKey = '{API_KEY}',
                scopes = '{SCOPES}',
                domain = '{OPTIONAL DOMAIN}',
                deferred = $q.defer();

            this.login = function () {
                gapi.auth.authorize({ 
                    client_id: clientId, 
                    scope: scopes, 
                    immediate: false, 
                    hd: domain 
                }, this.handleAuthResult);

                return deferred.promise;
            }

            this.handleClientLoad = function () {
                gapi.client.setApiKey(apiKey);
                gapi.auth.init(function () { });
                window.setTimeout(checkAuth, 1);
            };

            this.checkAuth = function() {
                gapi.auth.authorize({ 
                    client_id: clientId, 
                    scope: scopes, 
                    immediate: true, 
                    hd: domain 
                }, this.handleAuthResult);
            };

            this.handleAuthResult = function(authResult) {
                if (authResult && !authResult.error) {
                    var data = {};
                    gapi.client.load('oauth2', 'v2', function () {
                        var request = gapi.client.oauth2.userinfo.get();
                        request.execute(function (resp) {
                            data.email = resp.email;
                        });
                    });
                    deferred.resolve(data);
                } else {
                    deferred.reject('error');
                }
            };

            this.handleAuthClick = function(event) {
                gapi.auth.authorize({ 
                    client_id: clientId, 
                    scope: scopes, 
                    immediate: false, 
                    hd: domain 
                }, this.handleAuthResult);
                return false;
            };

        }]);
});