//BlackJack.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;



public class BlackJack extends JApplet {

    private JTextArea myCardsArea;
    private JLabel myTotalLabel;
    private JButton hitmeButton;
    private JButton holdButton;
    private JTextArea dealerCardsArea;
    private JLabel dealerTotalLabel;
    private LinkedList deck;    
    private LinkedList myCardsImage;
    private LinkedList dealerCardsImage;
    private Card dealerDownCard;
    private int myTotal;
    private int dealerTotal;
    private int myTotalAce;  //a 11 ace
    private int dealerTotalAce;


    public void init()
    {
	Container container = getContentPane();
	container.setLayout( new FlowLayout() );

	myCardsImage = new LinkedList();
	dealerCardsImage = new LinkedList();

	myCardsArea = new JTextArea( 6, 12 );
	myCardsArea.setEditable( false );
	//container.add( myCardsArea );

	hitmeButton = new JButton( "Deal" );
	container.add( hitmeButton );
	hitmeButton.addActionListener(
	      new ActionListener() {
		  public void actionPerformed( ActionEvent event ) {

		      Card tempCard;
		      int fValue;

		      if (hitmeButton.getText().equals("Deal")) {

			  myCardsImage.clear();
			  myCardsArea.setText( "" );
			  tempCard =  (Card)deck.removeFirst();
			  fValue = tempCard.getFaceValue();
			  myTotal = fValue;
			  if ( fValue == 1 )   //ace
			      myTotalAce = 11;
			  else
			      myTotalAce = fValue;

			  myCardsImage.add( tempCard.getImageIcon(BlackJack.this) );
			  myCardsArea.append( "" + tempCard + "  " + tempCard.getFaceValue() + "\n");
			  tempCard =  (Card)deck.removeFirst();
			  fValue = tempCard.getFaceValue();
			  if ( fValue==1 )   //ace
			      if ( myTotal!=myTotalAce )   //2nd ace
				  myTotalAce += 1;           //must be 1
			      else                         //first ace
				  myTotalAce += 11;
			  else                         //not ace
			      myTotalAce += fValue;
			  myTotal += fValue;

			  myCardsImage.add( tempCard.getImageIcon(BlackJack.this) );
			  myCardsArea.append( "" + tempCard + "  " + tempCard.getFaceValue() + "\n");
			  if ( myTotalAce != myTotal )
			      myTotalLabel.setText( "" + myTotal + 
						    " or " + myTotalAce );
			  else
			      myTotalLabel.setText( "" + myTotal );


			  dealerCardsImage.clear();
			  dealerCardsArea.setText( "" );

			  dealerDownCard =  (Card)deck.removeFirst();
			  fValue = dealerDownCard.getFaceValue();
			  dealerTotal = fValue;
			  if ( fValue == 1 )   //ace
			      dealerTotalAce = 11;
			  else
			      dealerTotalAce = fValue;  
	 
			  //dealerCardsImage.add( new ImageIcon( 
			  //    getImage(getCodeBase(), "Cards/down.gif" ) ));
			  dealerCardsImage.add( new ImageIcon( getClass().getResource( "Cards/down.gif" ) ) );

			  //dealerCardsImage.add( dealerDownCard.getImageIcon(BlackJack.this) );
			  dealerCardsArea.append( "" + dealerDownCard + "  " + 
						  dealerDownCard.getFaceValue() + "\n");
			  tempCard =  (Card)deck.removeFirst();
			  fValue = tempCard.getFaceValue();
			  if ( fValue==1 )    //ace
			      if ( dealerTotalAce!=dealerTotal ) //2nd ace
				  dealerTotalAce += 1;
			      else                              //first ace
				  dealerTotalAce += 11;
			  else    //not ace
			      dealerTotalAce += fValue;
			  dealerTotal += fValue;

			  dealerCardsImage.add( tempCard.getImageIcon(BlackJack.this) );
			  dealerCardsArea.append( "" + tempCard + "  " + tempCard.getFaceValue() + "\n");

			  if ( dealerTotalAce != dealerTotal )
			      dealerTotalLabel.setText( "" + dealerTotal + 
							" or " + 
							dealerTotalAce );
			  else
			      dealerTotalLabel.setText( "" + dealerTotal );

			  
			  hitmeButton.setText( "Hit me" );
			  holdButton.setEnabled( true );

			  if ( myTotalAce == 21 ) {
			      myTotalLabel.setText( "BlackJack!  You win!" );
			      hitmeButton.setText( "Deal" );
			      holdButton.setEnabled( false );
			  }
		      }
		      else {
			  tempCard =  (Card)deck.removeFirst();
			  //System.out.println(tempCard.toGifFilename());
			  fValue = tempCard.getFaceValue();
			  if ( fValue==1 )   //ace
			      if ( myTotal!=myTotalAce )   //ace already played
				  myTotalAce += 1;
			      else                         //first ace
				  myTotalAce += 11;
			  else                         //not ace
			      myTotalAce += fValue;
			  myTotal += fValue;

			  myCardsImage.add( tempCard.getImageIcon(BlackJack.this) );
			  myCardsArea.append( "" + tempCard + "  " + tempCard.getFaceValue() + "\n");
			  if ( myTotal > 21 ) {  //ace high will be busted too
			      myTotalLabel.setText( "Busted" );
			      holdButton.setEnabled( false );
			      hitmeButton.setText( "Deal" );
			  }
			  else
			      if ( myTotalAce != myTotal && myTotalAce<=21 )
				  myTotalLabel.setText( "" + myTotal + 
						    " or " + myTotalAce );
			      else
				  myTotalLabel.setText( "" + myTotal );

		      }
		      repaint();

		      //syntax error: cannot reference non-static from static context:
		      //if ( deck.size() < 20 ) BlackJack.start();    //ok?
		  }
	      }
	);

	holdButton = new JButton( "Hold" );
	holdButton.setEnabled( false );
	container.add( holdButton );
	holdButton.addActionListener(
	      new ActionListener() {
		  public void actionPerformed( ActionEvent event ) {

		      Card tempCard;
		      int fValue;

		      if ( ! hitmeButton.getText().equals("Deal") ) {
			  dealerCardsImage.removeFirst();  //down card
			  dealerCardsImage.addFirst( dealerDownCard.getImageIcon(BlackJack.this) );
			  repaint();

			  //sleep in loop is accumulative???
			  //try{    //slow him down
			  //  Thread.sleep( 1000 );
			  //} catch (InterruptedException e) {}

			  while (dealerTotal<21 && 
				 max21( dealerTotal, dealerTotalAce ) < 
				 max21( myTotal, myTotalAce ) ) {

			      tempCard =  (Card)deck.removeFirst();
			      fValue = tempCard.getFaceValue();
			      if ( fValue==1 )    //ace
				  if ( dealerTotalAce!=dealerTotal )//2+ ace
				      dealerTotalAce += 1;
				  else                              //first ace
				      dealerTotalAce += 11;
			      else    //not ace
				  dealerTotalAce += fValue;
			      dealerTotal += fValue;

			      dealerCardsImage.add( tempCard.getImageIcon(BlackJack.this) );
			      dealerCardsArea.append( "" + tempCard + "  " + tempCard.getFaceValue() + "\n");

			      if ( dealerTotalAce!=dealerTotal && 
				   dealerTotalAce<=21 )
				  dealerTotalLabel.setText( "" + dealerTotal + 
							    " or " + 
							    dealerTotalAce );
			      else
				  dealerTotalLabel.setText( "" + dealerTotal );

			      repaint();
			  }
			  if (dealerTotal > 21)
			      myTotalLabel.setText( "You win!" );
			  else
			      myTotalLabel.setText( "You lose!" );
			  hitmeButton.setText( "Deal" );
			  holdButton.setEnabled( false );
		      }
		  }
	      }
       );

	myTotalLabel = new JLabel( "" );
	container.add( myTotalLabel );

	dealerCardsArea = new JTextArea( 6, 12 );
	dealerCardsArea.setEditable( false );
	//container.add( dealerCardsArea );

	dealerTotalLabel = new JLabel( "");
	container.add( dealerTotalLabel );

    }


    public void start() {

	deck = new LinkedList();
	
	//initialize the deck of Cards
	//make it a 6 deck pack
	for (int d=1; d<=6; d++)
	    for ( int i=0; i<52; i++ )
		deck.add( new Card( Card.FACES[i%13], Card.SUITS[i/13] ) );
	
	Collections.shuffle( deck );    // shuffle deck
    }
    

    public void paint( Graphics g )
    {
	super.paint( g );
	int x, y;

	g.drawString( "YOU", 0, getHeight()/4-20 );
		      
	Iterator iter = myCardsImage.iterator();
	x = 0;
	y = getHeight()/4;
	while (iter.hasNext()) {
	    ((ImageIcon)(iter.next())).paintIcon( this, g, x, y);
	    x += 100;
	}

	g.drawString( "DEALER", 0, getHeight()/2-20 );

	iter = dealerCardsImage.iterator();
	x = 0;
	y = getHeight()/2;
	while (iter.hasNext()) {
	    ((ImageIcon)(iter.next())).paintIcon( this, g, x, y);
	    x += 100;
	}

    }
    
    
    //max of two ints but not over 21
    private int max21( int i, int j ) {
	if ( i <= 21 )
	    if ( j <= 21 )
		if ( i >= j )
		    return i;
	        else
		    return j;
	    else
		return i;
	else 
	    if ( j <= 21 )
		return j;
	    else
		return 22;  //both over 21
    }
}


// class to represent a Card in a deck of cards
//modified from Deitel's Cards.java
class Card {
    public static final String SUITS[] =  { "Hearts", "Clubs", "Diamonds", "Spades" };
    public static final String FACES[] = { "Ace", "Deuce", "Three", "Four", "Five", 
					    "Six", "Seven", "Eight", "Nine", "Ten",
					    "Jack", "Queen", "King" };
    private String face;
    //    private int face;
    private String suit;

   // initialize a Card
   public Card( String initialface, String initialSuit )
   {
      face = initialface;
      suit = initialSuit;
   }

    /*
   public Card( int initialface, String initialSuit )
   {
      face = initialface;
      suit = initialSuit;
   }
    */
   // return face of Card
   public String getFace() 
   { 
      return face; 
   }

   // return face value of Card
   public int getFaceValue() 
   { 
       int i=0;
       while ( ! face.equals(FACES[i]) )
	   i++;
      return i<10 ? i+1 : 10; 
   }

   // return suit of Card
   public String getSuit() 
   { 
      return suit; 
   }

   // return String representation of Card
   public String toString()
   {
      StringBuffer buffer = new StringBuffer( face + " of " + suit );
      buffer.setLength( 20 );

      return buffer.toString();
   }

    public String toGifFilename() {
	String f;
	if (getFaceValue() >= 10) {
	    if (face.equals("Ten"))
		f = "10";
	    else if (face.equals("Jack"))
		f = "j";
	    else if (face.equals("Queen"))
		f = "q";
	    else  // if (face.equals("King"))
		f = "k";
	}
	else if (getFaceValue() == 1)
	    f = "a";
	else
	    f = "" + getFaceValue();

	return 	"Cards/" + f + suit.substring(0,1).toLowerCase() + ".gif";
    }

    //needs the arg so can access getCodeBase...
    public ImageIcon getImageIcon( JApplet app ) {
	//System.out.print(""+app.getCodeBase() );  //jar?
	//System.out.println(""+toGifFilename() );  

	//browser:
	//return new ImageIcon( app.getCodeBase() + toGifFilename() );
	return new ImageIcon( getClass().getResource( toGifFilename() ) );
	//	return new ImageIcon( app.getImage( app.getCodeBase(), toGifFilename() ) );
	//appletviewer
	//	return new ImageIcon(  toGifFilename() );
    }
}