/*
 * Copyright (c) 2010 Remko Tronçon
 * Licensed under the GNU General Public License v3.
 * See Documentation/Licenses/GPLv3.txt for more information.
 */

#pragma once

#include <Swiften/Base/boost_bsignals.h>
#include <boost/shared_ptr.hpp>
#include <boost/optional.hpp>
#include <map>
#include <vector>

#include <string>
#include <Swiften/Base/API.h>
#include <Swiften/LinkLocal/DNSSD/DNSSDQuerier.h>
#include <Swiften/LinkLocal/DNSSD/DNSSDResolveServiceQuery.h>
#include <Swiften/LinkLocal/DNSSD/DNSSDRegisterQuery.h>
#include <Swiften/LinkLocal/DNSSD/DNSSDServiceID.h>
#include <Swiften/LinkLocal/LinkLocalService.h>
#include <Swiften/LinkLocal/LinkLocalServiceInfo.h>

namespace Swift {
	class SWIFTEN_API LinkLocalServiceBrowser {
		public:
			LinkLocalServiceBrowser(boost::shared_ptr<DNSSDQuerier> querier);
			~LinkLocalServiceBrowser();

			void start();
			void stop();
			bool isRunning() const;
			bool hasError() const;

			void registerService(
					const std::string& name, 
					int port, 
					const LinkLocalServiceInfo& info = LinkLocalServiceInfo());
			void updateService(
					const LinkLocalServiceInfo& info = LinkLocalServiceInfo());
			void unregisterService();
			bool isRegistered() const;

			std::vector<LinkLocalService> getServices() const;

			// FIXME: Ugly that we need this
			boost::shared_ptr<DNSSDQuerier> getQuerier() const {
				return querier;
			}

			boost::signal<void (const LinkLocalService&)> onServiceAdded;
			boost::signal<void (const LinkLocalService&)> onServiceChanged;
			boost::signal<void (const LinkLocalService&)> onServiceRemoved;
			boost::signal<void (const DNSSDServiceID&)> onServiceRegistered;
			boost::signal<void (bool)> onStopped;

		private:
			void handleServiceAdded(const DNSSDServiceID&);
			void handleServiceRemoved(const DNSSDServiceID&);
			void handleServiceResolved(const DNSSDServiceID& service, const boost::optional<DNSSDResolveServiceQuery::Result>& result);
			void handleRegisterFinished(const boost::optional<DNSSDServiceID>&);
			void handleBrowseError();

		private:
			boost::shared_ptr<DNSSDQuerier> querier;
			boost::optional<DNSSDServiceID> selfService;
			boost::shared_ptr<DNSSDBrowseQuery> browseQuery;
			boost::shared_ptr<DNSSDRegisterQuery> registerQuery;
			typedef std::map<DNSSDServiceID, boost::shared_ptr<DNSSDResolveServiceQuery> > ResolveQueryMap;
			ResolveQueryMap resolveQueries;
			typedef std::map<DNSSDServiceID, DNSSDResolveServiceQuery::Result> ServiceMap;
			ServiceMap services;
			bool haveError;
	};
}
