/**
  * @RDE_HEADER@
  * AudioVideoHandler
  * $Id$
  * $HeadURL$
  * $Author$
  * Created by Christian Fröbel, SLSE, 2017-11-27
  */

#pragma once

#include <memory>
#include <QObject>

class QString;

namespace AudioVideoManagement
{

class DatabaseInterface;
class ExerciseHandler;
class Exercise;
class AudioVideoHandlerImpl;
class DefaultAvMenus;

namespace Interface
{
class Dts;
}


/**
 * The AudioVideoHandler is responsible to keep the AVS device_config in sync
 * with cameras and announcement units currently mounted.
 * For this it observes the corrsponding Exercise (signals Exercise::assetAssigned() and Exercise::assetUnassigned()).
 * The Exercise instance is managed by the AssetAssignmentManager.
 * Also, the currently active streams will be published in the corresponding exercise partition.
 *
 * The functionality itself is implemented in AudioVideoHandlerImpl.
 *
 * @see AudioVideoHandlerImpl
 * @author Christian Fröbel
 */
class AudioVideoHandler : public QObject
{
  Q_OBJECT

public:
  AudioVideoHandler(Exercise *exercise, ExerciseHandler *exerciseHandler, DefaultAvMenus *defaultAvMenus, DatabaseInterface *db, Interface::Dts *dts);
  virtual ~AudioVideoHandler();

signals:
  /** Signalled after device_config modifications. */
  void avDbReloadNeeded();

private:
  class DbProxy;
  class DtsProxy;
  std::unique_ptr<DbProxy>                 m_dbProxy;
  std::unique_ptr<DtsProxy>                m_dtsProxy;
  std::unique_ptr<AudioVideoHandlerImpl>   m_impl;
};

} // namespace AudioVideoManagement