hyperion.ng/include/hyperion/MessageForwarder.h

#pragma once

// STL includes
#include <vector>
#include <map>
#include <cstdint>
#include <limits>

// QT includes
#include <QList>
#include <QStringList>
#include <QHostAddress>
#include <QJsonObject>
#include <QJsonArray>
#include <QJsonDocument>

// Utils includes
#include <utils/ColorRgb.h>
#include <utils/settings.h>
#include <utils/Logger.h>
#include <utils/Components.h>
#include <utils/Image.h>

// Hyperion includes
#include <hyperion/PriorityMuxer.h>

// Forward declaration
class Hyperion;
class QTcpSocket;
class FlatBufferConnection;

class MessageForwarder : public QObject
{
	Q_OBJECT
public:
	MessageForwarder(Hyperion* hyperion);
	~MessageForwarder();

	void addJsonSlave(QString slave);
	void addFlatbufferSlave(QString slave);

private slots:
	///
	/// @brief Handle settings update from Hyperion Settingsmanager emit or this constructor
	/// @param type   settingyType from enum
	/// @param config configuration object
	///
	void handleSettingsUpdate(const settings::type &type, const QJsonDocument &config);

	///
	/// @brief Handle component state change MessageForwarder
	/// @param component  The component from enum
	/// @param enable     The new state
	///
	void componentStateChanged(const hyperion::Components component, bool enable);

	///
	/// @brief Handle priority updates from Priority Muxer
	/// @param  priority  The new visible priority
	///
	void handlePriorityChanges(const quint8 &priority);

	///
	/// @brief Forward message to all json slaves
	/// @param message The JSON message to send
	///
	void forwardJsonMessage(const QJsonObject &message);

	///
	/// @brief Forward image to all flatbuffer slaves
	/// @param image The flatbuffer image to send
	///
	void forwardFlatbufferMessage(const QString& name, const Image<ColorRgb> &image);

	///
	/// @brief Forward message to a single json slave
	/// @param message The JSON message to send
	/// @param socket The TCP-Socket with the connection to the slave
	///
	void sendJsonMessage(const QJsonObject &message, QTcpSocket *socket);

private:
	/// Hyperion instance
	Hyperion *_hyperion;

	/// Logger instance
	Logger   *_log;

	/// Muxer instance
	PriorityMuxer *_muxer;

	// JSON connection for forwarding
	QStringList   _jsonSlaves;

	/// Proto connection for forwarding
	QStringList _flatSlaves;
	QList<FlatBufferConnection*> _forwardClients;

	/// Flag if forwarder is enabled
	bool _forwarder_enabled = true;

	const int _priority;
};