/**
  * @RDE_HEADER@
  * Video download communication
  * $Id$
  * $HeadURL$
  * $Author$
  * Created by Astrid Müller, SGAS, 2018-02-22
  */

#pragma once

#include "ivd_comm.h"
#include "ava_types.h"
#include "avm_export.h"
#include "logger.h"
#include <AudioVideoManagement/av_socket.h>
#include <QList>
#include <QtGlobal>
#include <chrono>

class QByteArray;
class QString;
class QStringList;

namespace AudioVideoManagement
{

/**
 * Implements the client-side of the RCP/VD-Protocoll -- i.e. the communication with AVS_Export.
 *
 * The Idea of this class is simply to provide
 * 1. Methods to issue commands
 * 2. Signals for incoming replys (defined in IVdComm).
 * 3. Possibly reconnecting when the connection got lost.
 * Observing the connection using KeepAlives is done by VdSession.
 *
 * A command can have multiple replys and thus can trigger multiple signals.
 * The layer above is then responsible to keep track of certain states in the protocol
 * and to e.g. assemble the received information into a more abstract format.
 *
 * @see VdControl
 * @see VdSession
 * @author Astrid Müller, Christian Fröbel
 */
class AVM_COMMON_EXPORT VdComm : public IVdComm
{
  Q_OBJECT

public:
  VdComm(const QString &vdHost, quint16 vdPort);

  void start();
  void forceDisconnect() override;

  void switchContext(int exerciseId) override;

  void vdSetScript(const QString &scriptName, AvaStreamType typ, int fileSplitting, const QVector<AvaScriptEntry> &streams,
                   const QString &exportedDirBaseName, const QString &absolutePath) override;
  void vdReleaseScript(const QString &scriptName) override;

  void keepAlive() override;

private slots:
  void onReadyRead(QTcpSocket *socket);

private:
  enum class Response
  {
    Ok = 200,
    ScriptInfo = 230,
    ScriptState = 231,
    ScriptPos = 233,
    ExportProgress = 271,
    InvalidNameList = 292,
    KeepAlive = 298,
    EndOfParameterList = 299
  };

  void parseResponse(const QByteArray &line);

  AVSocketWrapper             m_avSocket;
  LOGGER_T                    m_logger;
  LOGGER_T                    m_loggerIO;
};

} // namespace AudioVideoManagement