#ifndef QCP_H
#define QCP_H

#include "libqcp_global.h"

#include <QObject>
#include <QLinkedList>

#include "../libqtavahi/qtavahi.h"

namespace QCP {
	class LIBQCPSHARED_EXPORT Share;
	class LIBQCPSHARED_EXPORT WatchShare;
	class LIBQCPSHARED_EXPORT Browse;
}

namespace QCP {
	/* The private data of the Avahi::Service instances belongs to QCP ! :) */

	class LIBQCPSHARED_EXPORT Browse : public QObject {
		Q_OBJECT
	private:
		friend class QCP::Share;
		friend class QCP::WatchShare;

		typedef QLinkedList<WatchShare*> WatcherList;
		struct ShareData {
			WatcherList watcherList;
			void *data;
		};

	public:
		Browse(QObject *parent = 0);

		Avahi::Browse* avahiBrowse() { return m_av_browse; }

		inline bool start() { return m_av_browse->start(); }
		inline void stop() { m_av_browse->stop(); }

	signals:
		void found(QCP::Share s);
		void lost(QCP::Share s);

		void started();
		void stopped();

	private slots:
		void foundService(Avahi::Service s);
		void lostService(Avahi::Service s);

	private:
		WatchShare *watch(const Avahi::Service &service, QObject *parent);
		void removeWatch(WatcherList::iterator it, const Avahi::Service &service);

		static inline ShareData* shareData(const Avahi::Service &service) {
			return static_cast<ShareData*>(service.data());
		}

		Avahi::Browse *m_av_browse;
	};

	class LIBQCPSHARED_EXPORT Share {
	private:
		friend class QCP::Browse;
		friend class QCP::WatchShare;

	public:
		inline Share(QCP::Browse *browse, Avahi::Service service) : m_browse(browse), m_service(service) { }

	public:
		Avahi::Service avahiService() const { return m_service; }

		WatchShare *watch(QObject *parent = 0);

		void* data() const { Browse::ShareData *sd = Browse::shareData(m_service); return sd ? sd->data : 0; }
		void setData(void *data) const { Browse::ShareData *sd = Browse::shareData(m_service); if (sd) sd->data = data; }

	private:
		QCP::Browse *m_browse;
		Avahi::Service m_service;
	};

	class LIBQCPSHARED_EXPORT WatchShare : public QObject {
		Q_OBJECT

		friend class QCP::Share;
		friend class QCP::Browse;
	private:
		inline WatchShare(QObject *parent, Share share) : QObject(parent), m_share(share) { }

	public:
		virtual ~WatchShare() {
			m_share.m_browse->removeWatch(m_list_it, m_share.m_service);
		}

		inline Share share() { return m_share; }

	signals:
		void lost();

	private:
		Share m_share;
		Browse::WatcherList::iterator m_list_it;
	};
}

#endif // QCP_H