"use strict";

myMain();

function myMain() {
  var ncards=52;
  var deck = makeDeckObj(ncards);
  deck.show();
  deck.shuffle(1000);
  deck.show();
  var h = deck.deal(5);
  h.show();
  deck.show();
  h.shuffle(25);
  h.show();
}

function makeCard (cn) {
  var suits=["D","C","H","S"];
  var faces=["2","3","4","5","6","7","8","9","X","J","Q","K","A"];
  var card={
    num: cn,
    face: faces[cn%13],
    suit: suits[Math.floor(cn/13)],
    show: function() {alert(this.num+":"+this.getName());},
    getName: function() {return this.face+this.suit;},
  };
  return card;
}   

function makeDeckObj(nCards) {
  var deck= {
    cards: [],
    numCards: nCards,
    shuffle: function(times) {
      var slot1, slot2, temp;
      for(var i=1; i<=times; i=i+1) {
        slot1 = genRandomInt(0, this.numCards-1);
    	slot2 = genRandomInt(0, this.numCards-1);
    	temp = this.cards[slot1];
        this.cards[slot1]=this.cards[slot2];
        this.cards[slot2]=temp;
      }
    },
    
    addCard: function(card) {
      this.cards[this.numCards] = card;
      this.numCards++;
    },
    
    deal:function(num) {
      var hand = makeDeckObj(0);
      for (var c=0; c<num; c++) {
        hand.addCard(this.cards[c]);
      }
      //var hand=this.cards.slice(0,num);
      this.cards=this.cards.slice(num);
      this.numCards -=num;
      return hand;
    },
    
    show:function() {
      var nameStr="";
      for(var c=0; c<this.numCards; c++) {
        nameStr += this.cards[c].getName() + ",";}
      alert(this.numCards + " cards: "+nameStr);
    },
    
    init: function() {
      for (var c=0; c<this.numCards; c=c+1) {
        this.cards[c]=makeCard(c);
      }
    },
    
    getCard: function(n) {
      if (n>=1 && n<=this.numCards) { 
        return this.cards[n-1];
      } 
      return null;
    },
    
    size: function() { return this.numCards; },
  };

  deck.init();
  return(deck);
}

function genRandomInt(min,max) {
  return Math.floor(Math.random()*((max-min)+1))+min;
}