/**
  * @RDE_HEADER@
  * SimpleCommand
  * $Id$
  * $HeadURL$
  * $Author$
  * Created by Christian Fröbel, SLSE, 2017-07-11
  */

#pragma once

#include "icommand.h"
#include <functional>

namespace AudioVideoManagement
{

class IAvaComm;
class IAvaCommandDoneObserver;
class IVdComm;
class IVdCommandDoneObserver;

namespace detail
{

/**
 * A SimpleCommand synchronises only with the OK response sent by the AVS.
 * In order to invoke the actual command, a function object needs to be supplied
 * which then calls the corresponding method on AvaComm or VdComm.
 *
 * @author Christian Fröbel
 */
template<class Comm, class DoneObserver>
class SimpleCommand : public ICommand
{
public:
  /**
   * The AVS responds to some commands with more than one OK. In that case
   * the number of expected OK-responses can be specified.
   */
  SimpleCommand(const QString &commandDesc, Comm *comm, DoneObserver *observer, std::function<void (Comm *)> commandInvoker, int okCount = 1);
  QString debug() const override { return m_commandDesc; }

  void send() override;

private slots:
  void onOk();

private:
  void done();

  std::function<void (Comm *)>   m_commandInvoker;
  const int                      m_expectedOkCount;
  int                            m_okCount{0};
  Comm                          *m_comm;
  DoneObserver                  *m_observer;
  QString                        m_commandDesc;
};

} // namespace detail


namespace AvaCommands
{
using SimpleCommand = detail::SimpleCommand<IAvaComm, IAvaCommandDoneObserver>;
}


namespace VdCommands
{
using SimpleCommand = detail::SimpleCommand<IVdComm, IVdCommandDoneObserver>;
}

} // namespace AudioVideoManagement