/**
  * @RDE_HEADER@
  * ImportHandler
  * $Id$
  * $HeadURL$
  * $Author$
  * Created by Astrid Müller, Christian Fröbel, SLSE, 2017-12-12
  */

#pragma once

#include <AudioVideoManagement/exercise_context.h>
#include <AudioVideoManagement/avm_db.h>
#include <QObject>
#include <map>
#include <cstdint>

enum class DataModification;

namespace AssetManagement
{
class Asset;

namespace  Interface
{
class Dtc;
} // namespace Interface
} // namespace AssetManagement

namespace AudioVideoManagement
{

class ExerciseHandler;

/**
 * The ImportHandler is responsible for the creation of the IMPORT_VIDEO_CHANNEL entries
 * in avm.device_config for each Workstation for the given Exercise.
 *
 * @author Astrid Müller, Christian Fröbel
 */
class ImportHandler : public QObject
{
  Q_OBJECT

public:
  /** Creates the instance *and* connects the relevant signals. */
  static ImportHandler *create(ExerciseHandler *exerciseHandler, DatabaseInterface *db, AssetManagement::Interface::Dtc *asmDtc);

  /** Don't use, use create() instead. Only provided for UnitTests. */
  ImportHandler(const ExerciseContext &context, DatabaseInterface *db, AssetManagement::Interface::Dtc *asmDtc);
  virtual ~ImportHandler() = default;

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

private slots:
  void onContextActivated();
  void onContextDeactivated();

  void onAssetChanged(const AssetManagement::Asset &asset, DataModification modType);

private:
  void addToDb(const AssetManagement::Asset &asset);
  void removeFromDb(const AssetManagement::Asset &asset);

  ExerciseContext                                         m_context;
  bool                                                    m_isActive{false};
  DatabaseInterface                                      *m_db;
  AssetManagement::Interface::Dtc                        *m_asmDtc;
  using AssetId = int32_t;
  std::map<AssetId, Database::AvmDeviceConfig>   m_deviceConfigs;
};

} // namespace AudioVideoManagement