#ifndef SERVERDISCOVERY_H
#define SERVERDISCOVERY_H

#include <QObject>
#include <QUdpSocket>
#include <QTimer>
#include "../../shared/networkmessage.h"

class ServerDiscovery : public QObject
{
	Q_OBJECT

public:
	enum class ErrorType
	{
	    InvalidIpList,
	    InvalidHash
	};

	explicit ServerDiscovery(QObject *parent = 0);
	~ServerDiscovery();

	void start(const QByteArray& sessionName, QString mgrIP);
	void stop();
	inline bool isActive() { return _discoveryTimer.isActive(); }

private:
	QTimer     _discoveryTimer;
	const int  _minDiscoveryInterval;
	const int  _maxDiscoveryInterval;
	int        _hashErrorCount;
	int        _ipErrorCount;
	QByteArray _nameBytes;
	QByteArray _salt2;
	QUdpSocket _discoverySocket;
	NetworkMessage _packet;

	QHostAddress _mgrIP;

	static const int UDPBUFSIZ = 9000;
	static const int SALT_LEN = 18;

signals:
	void serverDetected(const QString& host, const quint16 port, const QByteArray& sessionName, const QByteArray& certHash, bool autoConnect);
	void error(ErrorType e, int count);

public slots:

private slots:
	void doDiscovery();
	void onUdpReadyRead();

};

#endif // SERVERDISCOVERY_H