chrome.runtime.onMessage.addListener(function(request, sender, sendResponse) {
  var website = location.protocol + '//' + location.host;
  switch (request.method) {
    case 'setData':
      var syncdata = {};
      syncdata[website] = request.customjs;
      chrome.storage.sync.set(syncdata);
      break;
    case 'getData':
      chrome.storage.sync.get(website, function(obj) {
        var customjs = obj[website] || JSON.parse('false');
        sendResponse({customjs: customjs, host: location.host, protocol: location.protocol});
      });
      break;
    case 'removeData':
      chrome.storage.sync.remove(website, function() {
      });
      break;
    case 'goTo':
      window.location = request.link;
      break;
    default:
      sendResponse({src: '', config: {}});
  }
  if (request.reload) {
    window.location.reload();
  }
  return true;
});