(function() {

  var VOTE_DELAY = 1500; // Wait 1.5 seconds before voting again
  var VOTE_YES_FOR = ['Julian Assange', 'Nigel Farage', 'Donald Trump'];


  function buildVoteBatch(slides,  candidatesToVoteFor) {
    return _.map(slides, function(slide) {
      var titleHtml = slide.title.value;
      var title = titleHtml.match(/">(.*?)</)[1].trim();
      var shouldVoteYes = _.some(candidatesToVoteFor, function(target) { return title.match(target) });
      var answerOption =  slide.options[1 - shouldVoteYes | 0];

      return { title: title, slideId: slide.id, answer: answerOption }
    });
  }

  function submitInteraction(interactionId, result, successCallback) {
    var payload = JSON.stringify({ interactionId: interactionId, result: result });

    var xhr = new XMLHttpRequest();
    xhr.open("POST", "http://interaction.apester.com/interaction-submission", true);
    xhr.onload = function() {
        if(xhr.status === 204) {
          successCallback();
        }
    }
    xhr.setRequestHeader("Content-Type", "application/json;charset=UTF-8");
    xhr.send(payload);
  }

  function gethInteractionWidgetData(interactionId) {
    return JSON.parse($('script[data-payload-url="/api/interaction/' + interactionId + '"]').text()).payload;
  }

  var interactionWidget = gethInteractionWidgetData(window.interactionId);
  var slides = interactionWidget.data.slides;
  var batch = buildVoteBatch(slides, VOTE_YES_FOR);

  var result = _.map(batch, function(vote) { return  { slideId: vote.slideId, result: vote.answer.id }; });
  var resultFriendly = _.map(batch, function(vote) { return  '' + vote.title + ': ' + vote.answer.value; });

  console.log(resultFriendly);

  setInterval(function() {
    submitInteraction(interactionWidget.interactionId, result, function() { console.log('voted'); });
  }, VOTE_DELAY);

})();