/**
  * @RDE_HEADER@
  * Data Plugin for The Timeline - DDS => GUI
  * $Id$
  * $HeadURL$
  * $Author$
  *
  * Created by Mike Wille, SLSE, 2017-03-27
  */

#pragma once

#include <QObject>
#include <PluginInterfaces/data_plugin_interface.h>
#include <Plugins/Timeline/tln_data_plugin_interface.h>
#include <ExerciseEventManagement/eem.hpp>

#include <QHash>
#include <QMap>
#include <QVector>

class QTimer;
class QWebSocket;
namespace TimeLineManagement
{
class DataPlugin final : public QObject, public DataPluginBase::Plugin
{
  Q_PLUGIN_METADATA(IID "data:3:tln")
  Q_INTERFACES(DataPluginBase::Plugin)

  Q_OBJECT
public:
  DataPlugin() = default;
  ~DataPlugin() = default;

  QString pluginName() const override  { return QStringLiteral("Timeline"); }
  std::shared_ptr<DataPluginBase::Interface> createDataInterface(LtsSession::LtsSessionDataDds *session) override;
  bool availableInPartition(IDL::PartitionType partition) const override
  {
    return partition == IDL::PartitionType::Exercise || partition == IDL::PartitionType::Replay;
  }
};


class DataInterfaceImpl final : public QObject, public DataInterface
{
  Q_OBJECT
public:
  explicit DataInterfaceImpl(LtsSession::LtsSessionDataDds *session);

  std::shared_ptr<TimeLineManagement::ForeignDataInterface> getForeignDataInterface() override { return m_foreign; }

private:
  std::shared_ptr<TimeLineManagement::ForeignDataInterface> m_foreign;

  NGL::INGLLogger &m_logger;
};


class TimelineDataProvider final : public QObject, public TimelineDataProviderInterface
{
  Q_OBJECT
public:
  TimelineDataProvider(int requestId, const QUrl &url,
                       qint64 from, qint64 to,
                       const QVector<int> &eventTypeIds = QVector<int>(),
                       const QJsonObject &filter = QJsonObject());
  ~TimelineDataProvider();

  const QVector<ExerciseEventManagement::Event> &eventData() const override { return m_eventData; }
  int requestId() const override { return m_requestId; }
  void getRequestTime(qint64 &requestMin /* out */, qint64 &requestMax /* out */) const override { requestMin = m_requestMin; requestMax = m_requestMax; }

signals:
  void finished();

private:
  void disconnectedFromEem();
  void textMessageFromEem(const QString &message);

private:
  QVector<ExerciseEventManagement::Event> m_eventData;
  QWebSocket *m_webSocketEem;
  int m_requestId;
  bool m_bFinshed;
  qint64 m_requestMin;
  qint64 m_requestMax;
  NGL::INGLLogger &m_logger;
};

class ForeignInterfaceImpl final : public ForeignDataInterface
{
  Q_OBJECT
public:
  explicit ForeignInterfaceImpl(LtsSession::LtsSessionDataDds *session);
  ~ForeignInterfaceImpl();

  TimelineDataProviderInterface *requestData(qint64 from,
                                             qint64 to,
                                             const QVector<int> &eventTypeIds = QVector<int>(),
                                             const QJsonObject &filter = QJsonObject()) override;
  QVector<ExerciseEventManagement::Event> liveHistory() const override;
  const QUrl eemUrl() const override;

private:
  void connectToScm();
  void connectedToScm();
  void textMessageFromScm(const QString &message);
  void connectToEem();
  void connectedToEem();
  void disconnectedFromEem();
  void textMessageFromEem(const QString &message);

  void requestFinished();
  void cleanupSocket(QWebSocket *s);

  void onClearHistoryBuffer();

private:
  QMap<qint64, QVector<ExerciseEventManagement::Event>> m_liveHistoryBuffer;
  QHash<int, TimelineDataProvider *> m_pendingRequests; // requestId

  LtsSession::LtsSessionDataDds *m_session;
  QWebSocket *m_webSocketScm;
  QWebSocket *m_webSocketEem;
  QTimer *m_liveHistoryBufferTimer;
  quint16 m_eemPort;
  NGL::INGLLogger &m_logger;
};

} // namespace TimeLineManagement