登入 Google 帳號的 AngularJS directive。 HackNTU 的產出之一，未完成

ng-google-auth.js

'use strict';

angular.module('calenshareApp')
.factory('GoogleAuth', function () {
    (function() {
      var po = document.createElement('script');
      po.type = 'text/javascript'; po.async = true;
      po.src = 'https://apis.google.com/js/client:plusone.js?onload=render';
      var s = document.getElementsByTagName('script')[0];
      s.parentNode.insertBefore(po, s);
    })();

    /* Executed when the APIs finish loading */
    function render() {
      // Additional params including the callback, the rest of the params will
      // come from the page-level configuration.
      var additionalParams = {
        'callback': function (authResult){
          if (authResult['status']['signed_in']) {
            // Update the app to reflect a signed in user
            // Hide the sign-in button now that the user is authorized, for example:
            document.getElementById('signinButton').setAttribute('style', 'display: none');
          } else {
            // Update the app to reflect a signed out user
            // Possible error values:
            //   "user_signed_out" - User is signed-out
            //   "access_denied" - User denied access to your app
            //   "immediate_failed" - Could not automatically log in the user
            console.log('Sign-in state: ' + authResult['error']);
          }
        }
      };

      // Attach a click listener to a button to trigger the flow.
      var signinButton = document.getElementById('signinButton');
      signinButton.addEventListener('click', function() {
        gapi.auth.signIn(additionalParams); // Will use page level configuration
      });
    }

    return {
      signIn: function(){

      }
    };
  });