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/**
 * Do the clicking stuff
 *
 */

(function() {
  var cards = document.querySelectorAll(".card.effect__click");
  for ( var i  = 0, len = cards.length; i < len; i++ ) {
    var card = cards[i];
    clickListener( card );
  }

function clickListener(card) {
    card.addEventListener( "click", function() {
      var c = this.classList;
      c.contains("flipped") === true ? c.remove("flipped") : c.add("flipped");
    });
  }
})();

/**
 * Do the random stuff
 *
 */

(function() {

// cache vars
  var cards = document.querySelectorAll(".card.effect__random");
  var timeMin = 1;
  var timeMax = 3;
  var timeouts = [];

// loop through cards
  for ( var i = 0, len = cards.length; i < len; i++ ) {
    var card = cards[i];
    var cardID = card.getAttribute("data-id");
    var id = "timeoutID" + cardID;
    var time = randomNum( timeMin, timeMax ) * 1000;
    cardsTimeout( id, time, card );
  }

// timeout listener
  function cardsTimeout( id, time, card ) {
    if (id in timeouts) {
      clearTimeout(timeouts[id]);
    }
    timeouts[id] = setTimeout( function() {
      var c = card.classList;
      var newTime = randomNum( timeMin, timeMax ) * 1000;
      c.contains("flipped") === true ? c.remove("flipped") : c.add("flipped");
      cardsTimeout( id, newTime, card );
    }, time );
  }

// random number generator given min and max
  function randomNum( min, max ) {
    return Math.random() * (max - min) + min;
  }

})();