Winning Auctions

winner.js

(function() {
  var checkBid = true;
  
  // run a function if the bid button is 
  var isButtonEnabled = function(callback) {
    console.log('checking for new bids');
    // if the place bid button is not disabled and we are ok to check a bid
    if (!$('.place-bid').hasClass('disabled') && checkBid) {
      // make it so we won't place a bid twice
      checkBid = false;
      // output debug information
      console.log('placing bid');
      
      // place the bid
      callback();
    }
  };
  
  var placeBid = function() {
    // wait somewhere between 1 and 4 seconds, so its not obvious we are automating this
    var wait = (Math.random() * 3 + 1)*1000;

    setTimeout(function() {
      // click the button
      $('.place-bid').click();
      // output debug information
      console.log('placed bid');
      // and set our race condition preventer that its ok to check the button now
      checkBid = true;
    }, wait);
  };

  // check the button to see if its been enabled every 5 seconds
  setInterval(function() {
  	isButtonEnabled(placeBid);
  }, 5000);
})();