Monitor Quora questions

monitor.js

(function(){
  //Initialize counts of how many are already monitored,
  //how many we're newly monitoring, how many we failed to monitor
  var already = 0;
  var succeeded = 0;
  var failed = 0;
  
  var interrupt = false;
  
  $(document).keyup(function(e){if(e.keyCode==27){interrupt = true;}});
  
  $("body").append("<div id='monitor_counts' style='position:fixed; top:100px; left: 5px;'></div>");
  $("#monitor_counts").append("<p class='already'>Already monitoring: <span class='num'>0</span></p>")
                  .append("<p class='succeeded'>Newly monitoring: <span class='num'>0</span></p>")
                  .append("<p class='failed'>Failed to monitor: <span class='num'>0</span></p>");
  
  //function to monitor questions from links wrapped in a jQuery object
  function monitorSelection(links) {
    links.each(function(index){
      var container = $(this).parents(".UserContentListItem");
      var url = $(this).attr("href");
      container.append("<iframe height='100px'></iframe>");
      container.append("<span class='monitor'></span>");
      var monitorStatus=$(".monitor", container);
      var iframe = $("iframe", container);
      var selector = ".hover_menu_contents a.checkable_item span:contains('Monitor')";
      iframe.load(function(){
        var iframe=$(this);
        var ijQuery=iframe.get(0).contentWindow.jQuery;
        var label = ijQuery(selector);
        var checkbox = label.siblings("input");
        if(checkbox.is(":checked")){
          monitorStatus.text("Already monitoring.").addClass("completed");
          already++;
          $(".already .num").text(already.toString());
          iframe.remove();
        } 
        else{
          function checkMonitorStatus(time) {
            var checkbox = ijQuery(selector).siblings("input");
            if(checkbox.is(":checked")) {
              iframe.remove();
              monitorStatus.text("Now monitoring!").addClass("completed");
              succeeded ++;
              $(".succeeded .num").text(succeeded.toString());
            }
            else if(time>0){
              setTimeout(function(){checkMonitorStatus(time-1)}, 1000);
              monitorStatus.text("Attempting to monitor: " + (time-1).toString() + "s remaining");
            }
            else {
              iframe.remove();
              monitorStatus.text("Failed to monitor!").addClass("completed");
              failed ++;
              $(".failed .num").text(failed.toString());
            }
          }
          label.click();
          //We'll give it 20 seconds before giving up. The number is arbitrary.
          checkMonitorStatus(20);
        }
      });
      iframe.attr("src", url);
    });
  }

  //Monitor all questions on the page.
  function monitorAll() {
    if($(".UserContentListItem:has(.monitor:not(.completed))").length>0){
      setTimeout(monitorAll, 1000);
    }
    else {
      monitorSelection($(".UserContentListItem:not(:has(.monitor)) a.question_link"));
      if(!interrupt) {
        window.scrollTo(0, document.body.scrollHeight);
        setTimeout(monitorAll, 3000);
      }
    }
  }

  monitorAll();
})();