#ifndef CONSTANTDRIFTCLOCK_H
#define CONSTANTDRIFTCLOCK_H

#include "ns3/object.h"
#include "ns3/nstime.h"

#include "ns3/clock.h"

namespace ns3
{

class ConstantDriftClock: public Clock
{
  public:
    /**
     * \brief Get the TypeId
     *
     * \return The TypeId for this class
     */
    static TypeId GetTypeId();

    /**
     * \brief Create a ConstantDriftClock
     */
    ConstantDriftClock();

    /**
     * Destroy a ConstantDriftClock
     *
     * This is the destructor for the ConstantDriftClock.
     */
    ~ConstantDriftClock() override;

    // Delete copy constructor and assignment operator to avoid misuse
    ConstantDriftClock& operator=(const ConstantDriftClock&) = delete;
    ConstantDriftClock(const ConstantDriftClock&) = delete;

    Time GetLocalTime() override;
    Time GetUncorrectedLocalTime() override;
    Time GetTimeAt(Time t) override;
    Time GetDuration(Time t) override;
    void UpdateTime() override;

  protected:

  private:
    Time m_initialOffset;
    bool m_IsInitialised = false;
    Time m_lastUpdateTime;
    Time m_lastUpdateTimeValue;
    double m_driftRate;

};

}
#endif /* CONSTANTDRIFTCLOCK_H */