/*
 * Copyright (c) 2010, Manuel Mausz. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - The names of the authors may not be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
import java.rmi.server.UnicastRemoteObject;
import java.rmi.RemoteException;
import java.util.Date;
 
/*
 * client --> server interface implementation
 *
 * @author Manuel Mausz (0728348)
 */
public class C2SInterfaceImpl
  extends UnicastRemoteObject
  implements C2SInterface
{
  private Server server;
  private Server.UserRecord user = null;
 
  /*--------------------------------------------------------------------------*/
 
  C2SInterfaceImpl(Server server)
    throws RemoteException
  {
    this.server = server;
  }
 
  /*--------------------------------------------------------------------------*/
 
  public boolean register(String username, String pass)
    throws RemoteException
  {
    if (user != null)
      throw new RemoteException("Unable to register. Already logged in.");
    return server.users.register(username, pass);
  }
 
  /*--------------------------------------------------------------------------*/
 
  public boolean login(String username, String pass, S2CInterface s2ciface)
    throws RemoteException
  {
    if (user != null)
      throw new RemoteException("Unable to log in. Already logged in.");
    user = server.users.login(username, pass, s2ciface);
    if (user == null)
      return false;
    return true;
  }
 
  /*--------------------------------------------------------------------------*/
 
  public void checkLoggedIn()
    throws RemoteException
  {
    if (user == null)
      throw new RemoteException("Not logged in.");
  }
 
  /*--------------------------------------------------------------------------*/
 
  public boolean create(String event, String location, int duration)
    throws RemoteException
  {
    checkLoggedIn();
    return server.events.create(user, event, location, duration);
  }
 
  /*--------------------------------------------------------------------------*/
 
  public void invite(String event, String invitee)
    throws RemoteException
  {
    checkLoggedIn();
    server.events.invite(user, event, invitee);
  }
 
  /*--------------------------------------------------------------------------*/
 
  public void addDate(String event, Date date)
    throws RemoteException
  {
    checkLoggedIn();
    server.events.addDate(user, event, date);
  }
 
  /*--------------------------------------------------------------------------*/
 
  public String event2String(String event)
    throws RemoteException
  {
    checkLoggedIn();
    return server.events.toString(event);
  }
 
  /*--------------------------------------------------------------------------*/
 
  public void vote(String event, Date[] dates)
    throws RemoteException
  {
    checkLoggedIn();
    synchronized(user)
    {
      server.events.vote(event, user.name, dates);
    }
  }
 
  /*--------------------------------------------------------------------------*/
 
  public void finalize(String event)
    throws RemoteException
  {
    checkLoggedIn();
    server.events.finalize(user, event);
  }
 
  /*--------------------------------------------------------------------------*/
 
  public boolean logout()
    throws RemoteException
  {
    checkLoggedIn();
    server.users.logout(user);
    user = null;
    return true;
  }
}