#ifndef TIMER_H
#define TIMER_H

//#include "CompilerDefs.h"
#ifndef _WIN32
#undef PLATFORM
#undef COMPILER
#define PLATFORM 1
#define COMPILER 1
#endif

#if PLATFORM == PLATFORM_WINDOWS
#   include <windows.h>
#   include <mmsystem.h>
#   include <time.h>
#else
# if defined(__APPLE_CC__)
#   include <time.h>
# endif
#   include <sys/time.h>
#   include <sys/timeb.h>
#endif

#if PLATFORM == PLATFORM_WINDOWS
inline uint32 getMSTime() { return GetTickCount(); }
#else
inline uint32 getMSTime()
{
	struct timeval tv;
	struct timezone tz;
	gettimeofday( &tv, &tz );
	return (tv.tv_sec * 1000) + (tv.tv_usec / 1000);
}
#endif

inline uint32 getMSTimeDiff(uint32 oldMSTime, uint32 newMSTime)
{
	// getMSTime() have limited data range and this is case when it overflow in this tick
	if (oldMSTime > newMSTime)
		return (0xFFFFFFFF - oldMSTime) + newMSTime;
	else
		return newMSTime - oldMSTime;
}

class IntervalTimer
{
public:
	IntervalTimer() : _interval(0), _current(0) {}

	void Update(time_t diff) { _current += diff; if(_current<0) _current=0;}
	bool Passed() { return _current >= _interval; }
	void Reset() { if(_current >= _interval) _current -= _interval;  }

	void SetCurrent(time_t current) { _current = current; }
	void SetInterval(time_t interval) { _interval = interval; }
	time_t GetInterval() const { return _interval; }
	time_t GetCurrent() const { return _current; }

private:
	time_t _interval;
	time_t _current;
};

struct TimeTracker
{

	TimeTracker(time_t expiry) : i_expiryTime(expiry) {}
	void Update(time_t diff) { i_expiryTime -= diff; }
	bool Passed(void) const { return (i_expiryTime <= 0); }
	void Reset(time_t interval) { i_expiryTime = interval; }
	time_t GetExpiry(void) const { return i_expiryTime; }
	time_t i_expiryTime;
};


enum TimeConstants
{
	MINUTE = 60,
	HOUR   = MINUTE*60,
	DAY    = HOUR*24,
	MONTH  = DAY*30
};
#endif