/**

 * libtransport -- C++ library for easy XMPP Transports development

 *

 * Copyright (C) 2011, Jan Kaluza <hanzz.k@gmail.com>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02111-1301  USA

 */

#pragma once

#include <string>

#include <map>

#include "Swiften/Swiften.h"

#include "transport/userregistry.h"

namespace Transport {

class User;

class Component;

class StorageBackend;

class StorageResponder;

class RosterResponder;

/// Manages online XMPP Users.

/// This class handles presences and creates User classes when new user connects.

/// It also removes the User class once the last user's resource disconnected.

class UserManager {

	public:

		/// Creates new UserManager.

		/// \param component Component which's presence will be handled

		/// \param storageBackend Storage backend used to fetch UserInfos

		UserManager(Component *component, UserRegistry *userRegistry, StorageBackend *storageBackend = NULL);

		/// Destroys UserManager.

		~UserManager();

		/// Returns user according to his bare JID.

		/// \param barejid bare JID of user

		/// \return User class associated with this user

		User *getUser(const std::string &barejid);

		/// Returns map with all connected users.

		/// \return All connected users.

		const std::map<std::string, User *> &getUsers() {

			return m_users;

		}

		/// Returns number of online users.

		/// \return number of online users

		int getUserCount();

		/// Removes user. This function disconnects user and safely removes

		/// User class. This does *not* remove user from database.

		/// \param user User class to remove

		void removeUser(User *user);

		/// Called when new User class is created.

		/// \param user newly created User class

		boost::signal<void (User *user)> onUserCreated;

		/// Called when User class is going to be removed

		/// \param user removed User class

		boost::signal<void (User *user)> onUserDestroyed;

		bool isUserConnected(const std::string &barejid) const {

			return m_users.find(barejid) != m_users.end();

		}

		UserRegistry *getUserRegistry() {

			return m_userRegistry;

		}

		void connectUser(const Swift::JID &user);

		void disconnectUser(const Swift::JID &user);