/*
 * Created on 15-Sep-2005
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
package org.vamsas.client.simpleclient;

import java.beans.EventHandler;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.io.BufferedReader;
import java.io.File;
import java.util.Hashtable;
import java.util.Vector;

import org.vamsas.client.ClientHandle;
import org.vamsas.client.Events;
import org.vamsas.client.IClient;
import org.vamsas.client.IClientDocument;
import org.vamsas.client.SessionHandle;
import org.vamsas.client.UserHandle;

/**
 * @author jimp
 */
public class SimpleClient implements IClient {

  UserHandle user = null;

  SessionHandle session = null;

  ClientHandle client = null;
  
  /*
   * (non-Javadoc)
   * TODO: check that build substitution variables are correct
   * @see org.vamsas.client.IClient#getAbout()
   */
  public String getAbout() {
    return new String("VORBA SimpleClient version $version$ build $build$");
  }

  /*
   * (non-Javadoc)
   * 
   * @see org.vamsas.client.IClient#getSessionUrn()
   */
  public String getSessionUrn() {
    return session.getSessionUrn();
  }

  /*
   * (non-Javadoc)
   * 
   * @see org.vamsas.client.IClient#getSessionHandle()
   */
  public SessionHandle getSessionHandle() {
    return session;
  }

  /*
   * (non-Javadoc)
   * 
   * @see org.vamsas.client.IClient#getClientHandle()
   */
  public ClientHandle getClientHandle() {
    return client;
  }

  /*
   * (non-Javadoc)
   * 
   * @see org.vamsas.client.IClient#getUserHandle()
   */
  public UserHandle getUserHandle() {
    return user;
  }

  private Hashtable handlers = initHandlers();

  private Vector listeners = new Vector();

  /**
   * make all the PropertyChangeSupport objects for the
   * events described in org.vamsas.client.Event
   * @return
   */
  private static Hashtable initHandlers() {
    Hashtable events = new Hashtable();
    java.util.Iterator evt = Events.EventList.iterator();
    while (evt.hasNext()) {
      Object ths = evt.next();
      events.put(ths, (Object) new PropertyChangeSupport(ths));
    }
    return events;
  }

  /*
   * (non-Javadoc)
   * 
   * @see org.vamsas.client.IClient#addDocumentUpdateHandler(java.util.EventListener)
   */
  public void addDocumentUpdateHandler(PropertyChangeListener evt) {
    if (handlers.containsKey(Events.DOCUMENT_UPDATE)) {
      Object handler;
      ((PropertyChangeSupport) (handler = handlers.get(Events.DOCUMENT_UPDATE)))
          .addPropertyChangeListener(evt);
      listeners.add(handler);
      listeners.add((Object) evt);
    }
  }

  /*
   * (non-Javadoc)
   * 
   * @see org.vamsas.client.IClient#finalizeClient()
   */
  public void finalizeClient() {
    // TODO: determine if this is last client in session
    // TODO: raise events like : ((lst_client && document.request.to.close), (client_finalization), (
    
    // if (handlers.containsKey(Events.))
    // if (handlers.containsKey(Events.CLIENT_FINALIZATION))
    // deregister listeners.
    // mark this instance as finalized
  }

  /**
   * extract data appropriate for client, session and user
   * from vamsas document.
   * @return application's byte array
   */
  private byte[] getApplicationData() {
    // TODO: extract correct byte object from Jar and return it to application.
    return null;
  }

  /*
   * (non-Javadoc)
   * 
   * @see org.vamsas.client.IClient#getClientDocument()
   */
  public IClientDocument getClientDocument() {
    Object[] vdoc;//  TODO: = getVamsasDocument(new Reader());
    // ClientDocument cdoc = new ClientDocument(getApplicationData(),
        // ((VamsasDocument) vdoc[0]).getVAMSAS(), (Hashtable) vdoc[1], this);
    // 
    return null;
  }

  /*
   * (non-Javadoc)
   * 
   * @see org.vamsas.client.IClient#updateDocument(org.vamsas.client.IClientDocument)
   */
  public void updateDocument(IClientDocument newdoc) {
    // TODO Auto-generated method stub
    // 
  }

  /*
   * (non-Javadoc)
   * 
   * @see org.vamsas.client.IClient#storeDocument(java.io.File)
   */
  public void storeDocument(File location) {
    // TODO Auto-generated method stub

  }

  /*
   * (non-Javadoc)
   * 
   * @see org.vamsas.client.IClient#addVorbaEventHandler(java.lang.String,
   *      java.beans.PropertyChangeListener)
   */
  public void addVorbaEventHandler(String EventChain, PropertyChangeListener evt) {
    if (handlers.containsKey(EventChain)) {
      Object handler;
      ((PropertyChangeSupport) (handler = handlers.get(EventChain)))
          .addPropertyChangeListener(evt);
      listeners.add(handler);
      listeners.add((Object) evt);
    }
  }

  /* (non-Javadoc)
   * @see org.vamsas.client.IClient#pollUpdate()
   */
  public void pollUpdate() {
    // TODO wake up UpdateWatcher thread to check for updates.

  }

  public static void main(String[] args) {
  }

  /* (non-Javadoc)
   * @see org.vamsas.client.IClient#joinSession()
   */
  public void joinSession() throws Exception {
    // TODO Auto-generated method stub
    
  }
}