import java.awt.*;
import java.io.*;
import java.net.*;

public class TTT extends Frame
{  
  public TTT(String[] args)
    { 

      init(args);

      setTitle("TicTacToe: "+user);
      
      Panel p = new Panel();
      
      p.setLayout(new GridLayout(3,3));
      
      for (int i = 0; i < 9; i++)
	{ 
	  p.add(But[i]= new Button());
	}      
      
      add("Center", p);
 
      cleanup();
      
    }
  

 
  public void insensitive()
    {
      for (int i=0; i<9; i++)
	{
	  But[i].disable();
	}
    }

  public void sensitive()
    {
      for (int i=0; i<9; i++)
	{
	  if(owner[i].equals("NONE"))
	     {
	       But[i].enable();
	     }
	}
    }

  public String other(String x)
    {
      if (x.equals("USER1"))
	return("USER2");
      else
	return("USER1");
    }

  public void cleanup()
    {
      for (int i=0; i<9;i++)
	{
	  But[i].setLabel(" ");
	  
	  owner[i]="NONE";
	}
      numselected=0;

      if (turn.equals(user))
	sensitive();
      else 
	insensitive();
      
      turn=other(turn);

      mon = new Monitor(this);
      mon.start();
      
    }
  

  public void callback(int i)
    {
      if (user.equals("USER2"))
	{
	  But[i].setLabel(user1sym);
	  owner[i] = "USER1";
	  
	}
      else
	{
	  But[i].setLabel(user2sym);
	  owner[i] = "USER2";
	  
	}
      numselected++;
      checkstate(true);
    }


public void gameover(String win)
  {
    String str = "";

    if(win.equals("NONE"))
      str="No winner, It is a tie!";
    else
      if(win.equals(user))
	str="You are the winner!";
      else
	str="You are the loser!";

    OverDialog d = new OverDialog(this,this,str);
    d.show();
  }




  public void checkstate(boolean makesense)
    {
      String winner ="NONE";

      int TOP_LT = 0;
      int TOP_MD = 1;
      int TOP_RT = 2;
      int MID_LT = 3;
      int MID_MD = 4;
      int MID_RT = 5;
      int BUT_LT = 6;
      int BUT_MD = 7;
      int BUT_RT = 8;

      if((owner[TOP_LT]==owner[TOP_MD])&&(owner[TOP_MD]==owner[TOP_RT])||
       (owner[TOP_LT]==owner[MID_LT])&&(owner[MID_LT]==owner[BUT_LT]))
      if (!owner[TOP_LT].equals("NONE")) 
        winner=owner[TOP_LT];

      if((owner[BUT_RT]==owner[BUT_MD])&&(owner[BUT_MD]==owner[BUT_LT])||
	 (owner[BUT_RT]==owner[MID_RT])&&(owner[MID_RT]==owner[TOP_RT]))
	if(!owner[BUT_RT].equals("NONE"))
	  winner=owner[BUT_RT];


      if((owner[MID_MD]==owner[TOP_LT])&&(owner[TOP_LT]==owner[BUT_RT])||
	 (owner[MID_MD]==owner[TOP_RT])&&(owner[TOP_RT]==owner[BUT_LT])||
	 (owner[MID_MD]==owner[TOP_MD])&&(owner[TOP_MD]==owner[BUT_MD])||
	 (owner[MID_MD]==owner[MID_LT])&&(owner[MID_LT]==owner[MID_RT]))
	if(!owner[MID_MD].equals("NONE"))
	  winner=owner[MID_MD];


      if (!winner.equals("NONE")) 
	gameover(winner);     
      else
	if (numselected==9) gameover("NONE");
	else
	  if (makesense==true)
	    {
	      sensitive();
	      mon.stop();
	    }
	  else
	    {
	      insensitive();
	      mon = new Monitor(this);
	      mon.start();
	    }
}



  public boolean handleEvent(Event evt)
    {  
      if (evt.id == Event.WINDOW_DESTROY) System.exit(0);
      return super.handleEvent(evt);
    }


  public boolean action(Event evt, Object arg)
    {  
      for (int i = 0; i<9; i++)
	{
	  if (evt.target==(But[i]))
	    {
	      if (user.equals("USER1"))
		{
		  But[i].setLabel(user1sym);
		  owner[i] = "USER1";
		}
	      else
		{
		  But[i].setLabel(user2sym);
		  owner[i] = "USER2";
		}

	      insensitive();
	     
	      numselected++;

	      out.println(" "+i+" \r");

	      checkstate(false);

	    }
	}

      return true;
    }
  
  private  void init_server()
    {  
     
      user = "USER1";
	  
      try 
	{
	  ServerSocket s = new ServerSocket(0);

	  String hostname =s.getInetAddress().getLocalHost().toString();
	  hostname= hostname.substring(0,hostname.indexOf('/'));

	  System.out.println("The other player should type: java TTT "+hostname+" "+s.getLocalPort());

	  Socket incoming = s.accept();
	  
	  in = new DataInputStream(incoming.getInputStream());
	
	  out = new PrintStream(incoming.getOutputStream());

	}
      catch (Exception e)
	{
	  System.out.println(e);
	}
    }

  private void init_client(String host, String strport)
    {
      int port = Integer.parseInt(strport.trim());
      user="USER2";
   
      try
	{
	  incoming = new Socket(host,port);
	  in = new DataInputStream(incoming.getInputStream());
	
	  out = new PrintStream(incoming.getOutputStream());
	}
      catch (Exception e)
	{
	  System.out.println(e);
	}
     
    }
  

  public void init(String[] args)
    {
      if (args.length==0)
	init_server();
      else
	if (args.length==2)
	  init_client(args[0],args[1]);
      else
	{
	  System.out.println("TicTacToe for Java v.1.0\nError:Wrong Number of Arguments\nTTT [hostname portnumber]");
	  System.exit(0);
	}
   
      turn = "USER2";
      user1sym = "X       X\n X   X \n  X  \n X   X \nX       X";
      user2sym = "   OOO   \n O      O \n O      O \n O      O \n   OOO   ";
     
    }


  public static void main(String[] args)
    {  
      Frame f = new TTT(args);
      f.resize(300, 300);
      f.show();  
    }

  public Button[] But = new Button[9];
  public String user;
  public String[] owner = new String[9];
  public Socket incoming;
  public ServerSocket s;
  public int port;
  public DataInputStream in;
  public PrintStream out;
  public Monitor mon;
  public String user1sym;
  public String user2sym;
  public int numselected=0;
  public String turn;


}

class Monitor extends Thread
{
  
  public Monitor(TTT t)
    {
      ttt = t;
    }

  public void run()
    {
      try
	{
       
	  String str = ttt.in.readLine();
	  
	  int i =Integer.parseInt(str.trim()); 
	  
   	  ttt.callback(i);
	  
	 }
      catch(Exception e)
	{
	  System.out.println(e);
	}
    }


  public TTT ttt;

}


class OverDialog extends Dialog
{
  public OverDialog(TTT t, Frame f, String strlabel)
    {
     
      super(f,"Game Over!", true);
     
      Panel p1 = new Panel();
      p1.add("North",new Label(strlabel));
      p1.add("South",new Label("Would you like to play another game?"));

      Panel p2 = new Panel();
      p2.add(new Button("YES"));
      p2.add(new Button("NO"));

      add("Center",p1);
      add("South",p2);
      resize(300,120);

      ttt=t;

    }
  

  public void checkagain(int respond)
    {
      int i=0;

      try
	{
	  String str = ttt.in.readLine();
	  i =Integer.parseInt(str.trim()); 
	  
	  if ((respond==1)&&(i==1))
	    {
	      ttt.cleanup();
	    }
	  else
	    {
	      System.exit(0);
	    }
	}
      catch(Exception e)
	{
	  System.out.println(e);
	}
    }


  public boolean handleEvent(Event evt)
    {  
      if (evt.id == Event.WINDOW_DESTROY) dispose();
      else 
	return super.handleEvent(evt);
      return true;
    }

  
  public boolean action(Event evt, Object arg)
    {
      if (arg.equals("YES"))
	{
	  ttt.out.println(" 1 \r");
	  dispose();
	  checkagain(1);
	 
	}
      else 
	if(arg.equals("NO"))
	{
	  ttt.out.println(" 0 \r");
	  dispose();
	  checkagain(0);
	 
	}
      else 
	return false;
      return true;
    }

 
  private TTT ttt;

    
}