/**
  * @RDE_HEADER@
  * TopicReplay
  * $Id$
  * $HeadURL$
  * $Author$
  * Created by Christian Fröbel, NLSE, 2018-06-26
  */

#pragma once

#include <AudioVideoManagement/logger.h>
#include <AudioVideoManagement/Shared/playback_app.h>
#include <PluginInterfaces/topic_replay_interface.h>

#include <QString>
#include <QRect>
#include <QVector>
#include <QWidget>
#include <boost/optional.hpp>
#include <memory>
#include <AudioVideoManagement/ava_control.h>
#include <AudioVideoManagement/ava_session.h>


namespace AudioVideoManagement
{
enum class AvaStreamType;

/**
 * Helper class used to determine where the AVS dialog for presentation shall be placed.
 * An instance of this class will be returned by TopicReplay::createWidget().
 * The ScriptPlayer will then place (and resize) this widget accordingly.
 */
class ScreenPlacementHelper : public QWidget
{
  Q_OBJECT

public:
  ScreenPlacementHelper(QWidget *parent = nullptr)
    : QWidget(parent)
  {
    setWindowTitle(QStringLiteral("Topic Replay Screen Placement Helper"));

    // NOTE: the widget has to be visible in order to receive resizeEvents !!

    // make widget transparent so that it's not disturbing
    setWindowFlags(Qt::FramelessWindowHint/* | Qt::Popup*/);
    setAttribute(Qt::WA_TranslucentBackground);

    activateWindow(); // force it into a window
    show();
  }

protected:
  void moveEvent(QMoveEvent *) override
  {
    emitNewGeometry();
  }

  void resizeEvent(QResizeEvent *) override
  {
    emitNewGeometry();
  }

  void emitNewGeometry()
  {
    //QRect globalGeometry(mapToGlobal(geometry().topLeft()), size());
    emit widgetPlaced(geometry());//globalGeometry);
  }

signals:
  void widgetPlaced(const QRect &geometry);
};


class DataInterface;
class AvaControl;
class VdControl;
struct AvaScriptEntry;


class TopicReplay final : public QObject, public ::TopicReplay::Interface
{
  Q_OBJECT

public:
  TopicReplay(DataInterface *dataIfc, bool isAudio);
  ~TopicReplay();

  /**
   * @return nullptr for audio topics.
   */
  QWidget *createWidget() override;


  bool playbackInit(const QJsonObject &attributes) override;
  bool playbackStart(int secondsOffset) override;
  bool playbackPause() override;
  bool playbackStop() override;

  bool exportTopic(const QJsonObject &attributes,
                   const QString &folderPath,
                   TopicEditorBase::ExportNotifier *pExportNotifier) override;

private slots:
  void onWidgetPlaced(const QRect &geometry);
  void avScriptFinished(const QString &exportDir, AvaStreamType streamType, bool success);
  void slotSetScriptResponse(const AvaStreamInfo &, AvaStreamState);

private:
  AvaControl* getAvaControl();
  VdControl*  getVdControl();

  //class ScreenPlacementHelper;
  class ExportScript;

  const bool                               m_isAudio;
  PlaybackAppHandle                        m_appHandle;
  DataInterface                           *m_dataIfc;
  QString                                  m_scriptName;
  bool                                     m_isPlaying{false};
  QScopedPointer<ScreenPlacementHelper>    m_screenPlacementHelper;
  boost::optional<QRect>                   m_dialogGeometry;
  QScopedPointer<ExportScript>             m_exportScript;
  LOGGER_T                                 m_logger;
  QJsonObject                              m_playbackAttributes;
};

} // namespace AudioVideoManagement