Javascript module for shortening URLs using Google (goo.gl)

pdogs-urlshortener-google.js

(function($,window) {
"use strict";

window.pdogs = window.pdogs || {};
pdogs.urlshortener = function() {
   var
      _googlAPIKey = '<YOUR GOOGLE APIKey HERE>',
      _module = { shorten: shorten };
   return _module;

   function shorten(longUrl, sync) {
      var p = $.Deferred();
      if (typeof longUrl === 'undefined' || !longUrl || !longUrl.length) { 
         p.reject({ error: 'Invalid/Empty URI' }); 
         return p.promise();
      }

      var
         decodedLongUrl = decodeURIComponent(longUrl),
         params = 'key='+_googlAPIKey,
         r = {
            type: 'POST',
            url: 'https://www.googleapis.com/urlshortener/v1/url?' + params,
            headers: {
               'Accept': 'application/json',
               'Content-Type': 'application/json'
            },
            data: "{ longUrl: '" + decodedLongUrl + "' }",
            async: !sync
         };
      jQuery.support.cors = true;
      $.ajax(r)
         .done(function(response) {
            if (response.error) p.reject({ error: '[' + response.error.code+'] ' + response.error.message }); 
            else 
               p.resolve({ shortUrl: response.id, shortUrlImg: response.id + '.qr', longUrl: response.longUrl }); 
         })
         .fail(function(xhr,textStatus, error) { 
            var m = error.message ? error.message : error;
            p.reject({ error: 'goo.gl] ' + textStatus + ': ' + m }); 
         });
      return p.promise();
   }
}();

})(jQuery,window);