/**
 * XMPP - libpurple transport
 *
 * Copyright (C) 2009, Jan Kaluza <hanzz@soc.pidgin.im>
 *
 * 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 <algorithm>
#include <map>
#include "Swiften/Swiften.h"
// #include "rosterstorage.h"

namespace Transport {

class AbstractBuddy;
class User;
class Component;

/// Manages roster of one XMPP user.
class RosterManager {
	public:
		/// Creates new RosterManager.
		/// \param user User associated with this RosterManager.
		/// \param component Transport instance associated with this roster.
		RosterManager(User *user, Component *component);

		/// Destructor.
		virtual ~RosterManager();

		/// Associates the buddy with this roster,
		/// and if the buddy is not already in XMPP user's server-side roster, the proper requests
		/// are sent to XMPP user (subscribe presences, Roster Item Exchange stanza or
		/// the buddy is added to server-side roster using remote-roster protoXEP).
		/// \param buddy AbstractBuddy
		void setBuddy(AbstractBuddy *buddy);

		/// Deassociates the buddy with this roster.
		/// \param buddy AbstractBuddy.
		void unsetBuddy(AbstractBuddy *buddy);

		AbstractBuddy *getBuddy(const std::string &name);

		/// Returns user associated with this roster.
		/// \return User
		User *getUser() { return m_user; }

		/// Called when new AbstractBuddy is added to this roster.
		/// \param buddy newly added AbstractBuddy
		boost::signal<void (AbstractBuddy *buddy)> onBuddySet;

		/// Called when AbstractBuddy has been removed from this roster.
		/// \param buddy removed AbstractBuddy
		boost::signal<void (AbstractBuddy *buddy)> onBuddyUnset;

	private:
		void setBuddyCallback(AbstractBuddy *buddy);

		void sendBuddyRosterPush(AbstractBuddy *buddy);
		void handleBuddyRosterPushResponse(Swift::ErrorPayload::ref error, const std::string &key);

		std::map<std::string, AbstractBuddy *> m_buddies;
		Component *m_component;
		User *m_user;
		Swift::Timer::ref m_setBuddyTimer;
};

}