import java.applet.Applet;
import java.awt.Button;
import java.awt.GridLayout;
import java.awt.Label;
import java.awt.TextField;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.net.MalformedURLException;
import java.net.URL;
import lava.net.common.UNA;
import lava.net.common.UNL;
import lava.net.mmp.MMPMessageCenter;
import lava.net.psyc.PSYCMessageCenter;
import lava.net.psyc.UNI;
import lava.net.psyc.packages.Authentication;
import lava.net.psyc.packages.Biff;
import lava.net.psyc.packages.Echo;
import lava.net.psyc.packages.Trace;
import lava.net.psyc.packages.LinkPeer;
import lava.net.psyc.packages.Statistics;

/**
 *
 **/
public class PSYCBiffApplet extends Applet implements ActionListener
{
   /**
    *
    **/
   private String base = null;

   /**
    *
    **/
   private UNA proxy = null;

   /**
    *
    **/
   private TextField userProgram = null;

   /**
    *
    **/
   public final static String userProgramTag = "User Program";

   /**
    *
    **/
   public final static String userProgramDefault = "psyc://";

   /**
    *
    **/
   private TextField password = null;

   /**
    *
    **/
   public final static String passwordTag = "Password";

   /**
    *
    **/
   public final static String passwordDefault = null;

   /**
    *
    **/
   public final static int width = 60;

   /**
    *
    **/
   private Button start = null;

   /**
    *
    **/
   public final static String startButton = "Start PSYCBiff";

   /**
    *
    **/
   private Button reset = null;

   /**
    *
    **/
   public final static String resetButton = "Reset Entries";

   /**
    *
    **/
   public void init()
   {
      base = "http://141.24.32.50/~holbe/lava/";
      String codeBase = getCodeBase().getHost();
      if(codeBase == null || codeBase.length() <= 0)
         codeBase = "localhost";
      UNA.addAppletHost(codeBase);
      PSYCMessageCenter.setDefaults();
      proxy = new UNA(null,codeBase,MMPMessageCenter.defaultPort,//
      MMPMessageCenter.defaultProtocol,null);
      setLayout(new GridLayout(3,2));
      add(new Label(userProgramTag,Label.RIGHT));
      add(userProgram = new TextField(width));
      userProgram.addActionListener(this);
      add(new Label(passwordTag,Label.RIGHT));
      add(password = new TextField(width));
      password.setEchoChar('*');
      add(start = new Button(startButton));
      start.addActionListener(this);
      add(reset = new Button(resetButton));
      reset.addActionListener(this);
      setDefaults();
   }

   /**
    *
    **/
   private void setDefaults()
   {
      userProgram.setText(userProgramDefault);
      password.setText(passwordDefault);
   }

   /**
    *
    **/
   public void actionPerformed(ActionEvent e)
   {
      Object source = e.getSource();
      String command = e.getActionCommand();
      if(source == userProgram)
      {
         UNL test = new UNL(command);
         userProgram.setText(test.toString());
      }
      else
         if(source == start)
         {
            PSYCBiff biff = new PSYCBiff(base);
            biff.password = password.getText();
            biff.center = new PSYCMessageCenter(null,false);
            System.out.println("proxy: " + proxy);
            ((MMPMessageCenter)biff.center.getMMPCenter()).setProxy(null,proxy);
            biff.center.setIdentification(null,//
            new UNI(userProgram.getText()));
            biff.center.setContentType(null,"text/plain");
            biff.center.setGreeting("_notice_session_start",//
            "Hello.\n\nWelcome to the wonderful world of PSYC!");
            biff.center.addPackage(biff.biff_backend = new Biff(biff));
            biff.center.addPackage(biff.auth_backend = //
            new Authentication(biff));
            System.out.println("connecting to " + //
            biff.center.getIdentification(null));
            biff.center.addPackage(biff.user_backend = new LinkPeer(biff));
            biff.center.addPackage(new Echo());
            biff.center.addPackage(new Trace());
            biff.center.addPackage(new Statistics());
         }
         else
            if(source == reset)
            {
               setDefaults();
            }
   }

}