/**
  * @RDE_HEADER@
  * Handler for CheckmkHandler
  * $Id$
  * $HeadURL$
  * $Author$
  * Created by Norbert Thoden, SLSE, 2022-11-03
  */

#pragma once

#include "logger.h"
#include <InfrastructureManagement/ism_dtc.h>
#include <ComponentMonitor/cmo.hpp>
#include <QTimer>
#include <QTcpSocket>
#include <QDataStream>

namespace DDSConnector
{
class DdsConnector;
}

namespace ComponentMonitor
{
class DdsHandler;

// Maybe helpful:
// https://docs.checkmk.com/latest/de/livestatus.html
// https://docs.checkmk.com/latest/de/livestatus_references.html
// https://github.com/sileht/check_mk/blob/master/livestatus/api/python/livestatus.py

class CheckmkHandler : public QObject
{
  Q_OBJECT

public:
  CheckmkHandler();
  ~CheckmkHandler();

  bool initialize(const QString &checkMkServerHostname, int checkMkServerPort, int checkIntervalSec);

  void run();
  void stop();
  bool doConnect();

public Q_SLOTS:
  void onImmediateGetStateRequested();

private:
  bool writeGetStateRequest();

Q_SIGNALS:
  void newState(QString hostname, bool state, long long lastCheck);

private Q_SLOTS:
  void onTimeout();
  void readData();
  void onConnected();
  void onStateChanged(const QAbstractSocket::SocketState &newState);
  void onSocketError(const QAbstractSocket::SocketError &socketError);


protected:
  bool processLine(const QByteArray &line);

private:
  // checkMkServer
  QString                     m_checkMkHost;
  quint16                     m_checkMkPort{0};
  int                         m_checkIntervalSec{60};
  int                         m_highFrequencyCheck{-1};
  QTimer                     *m_timer{nullptr};

  QTcpSocket                 *m_socket{nullptr};

  NGL::INGLLogger            &m_logger;
};


} // namespace ComponentMonitor