/*
* Copyright 2010 BetaSteward_at_googlemail.com. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
*    1. Redistributions of source code must retain the above copyright notice, this list of
*       conditions and the following disclaimer.
*
*    2. 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.
*
* THIS SOFTWARE IS PROVIDED BY BetaSteward_at_googlemail.com ``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 BetaSteward_at_googlemail.com 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.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of BetaSteward_at_googlemail.com.
*/

package mage.server;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.GregorianCalendar;
import java.util.UUID;
import java.util.concurrent.ConcurrentHashMap;
import mage.interfaces.callback.ClientCallback;
import mage.view.ChatMessage;
import mage.view.ChatMessage.MessageColor;
import org.apache.log4j.Logger;

/**
 *
 * @author BetaSteward_at_googlemail.com
 */
public class ChatSession {

	private final static Logger logger = Logger.getLogger(ChatSession.class);
	private ConcurrentHashMap<UUID, String> clients = new ConcurrentHashMap<UUID, String>();
	private UUID chatId;
	private DateFormat timeFormatter = SimpleDateFormat.getTimeInstance(SimpleDateFormat.SHORT);

	public ChatSession() {
		chatId = UUID.randomUUID();
	}

	public void join(UUID userId) {
		User user = UserManager.getInstance().getUser(userId);
		if (user != null) {
			String userName = user.getName();
			clients.put(userId, userName);
			broadcast(userName, " has joined", MessageColor.BLACK);
			logger.info(userName + " joined chat " + chatId);
		}
	}

	public void kill(UUID userId) {
		if (clients.containsKey(userId)) {
			String userName = clients.get(userId);
			clients.remove(userId);
			broadcast(userName, " has left", MessageColor.BLACK);
			logger.info(userName + " has left chat " + chatId);
		}
	}

	public void broadcast(String userName, String message, MessageColor color) {
		Calendar cal = new GregorianCalendar();
		final String msg = message;
		final String time = timeFormatter.format(cal.getTime());
		final String username = userName;
		logger.debug("Broadcasting '" + msg + "' for " + chatId);
		for (UUID userId: clients.keySet()) {
			User user = UserManager.getInstance().getUser(userId);
			if (user != null)
				user.fireCallback(new ClientCallback("chatMessage", chatId, new ChatMessage(username, msg, time, color)));
			else
				kill(userId);
		}
	}

	/**
	 * @return the chatId
	 */
	public UUID getChatId() {
		return chatId;
	}

	public boolean hasUser(UUID userId) {
		return clients.containsKey(userId);
	}

}