var Card = require("./Card");
/*var CardManager = require("./CardManager");*/

var Deck = (function(){
  var Deck = function(deck){
    if(!(this instanceof Deck)){
      return (new Deck(deck));
    }
    /**
     * constructor here
     */
    this._deck = [];

    this._originalDeck = [];
    this.setDeck(deck);
  };
  var r = Deck.prototype;
  /**
   * methods && properties here
   * r.property = null;
   * r.getProperty = function() {...}
   */
  r._deck = null;
  r._owner = null;
  r._originalDeck = null;

  r.setDeck = function(deckData){
    this._originalDeck = deckData.slice();
    this._deck = deckData.slice();

    this._loadCards();
    this.shuffle();
  }

  r.getLength = function(){
    return this._deck.length;
  }

  r.length = function() {
    return this.getLength();
  }

  r.getDeck = function(){
    return this._deck;
  }

  r.draw = function(times){
    if(!this._deck.length) return 0;
    var card = this.pop();
    return card;
  }

/*
  r._loadCards = function(){
    var n = this._originalDeck.length;
    for(var i = 0; i < n; i++) {
      this._deck.push(CardManager().add(this._originalDeck[i], this._owner));
    }
  }*/

  r._loadCards = function() {
    this._deck = this.getDeck().map(function(cardkey) {
      return Card(cardkey);
    });
  }

  r.pop = function(){
    var id = this._deck.pop();/*
    var card = CardManager().getCardById(id);*/
    return id;
  }

  /*r.find = function(key, val){
    var res = [];
    this.getDeck().forEach(function(id){
      var card = CardManager().getCardById(id);
      if(card.getProperty(key) == val){
        res.push(card);
      }
    });
    return res;
  }*/

  r.removeFromDeck = function(id){
    var n = this.length();

    for(var i = 0; i < n; i++) {
      var cardID = this.getDeck()[i];
      if(id == cardID){
        this.getDeck().splice(i, 1);
        return id;
      }
    }
    return -1;
  }

  r.shuffle = function(){
    var deck = this.getDeck();

    var n = this.length();
    for(var i = n - 1; i > 0; i--) {
      var j = (Math.random() * i) | 0;
      var tmp;

      tmp = deck[j];
      deck[j] = deck[i];
      deck[i] = tmp;
    }
  }

  return Deck;
})();

module.exports = Deck;