#ifndef PITIMER_H
#define PITIMER_H

#include <ctime>
#include <csignal>
#include "pithread.h"
#include "pistring.h"

typedef void (*TimerEvent)(void * );

struct PITime {
	int seconds;
	int minutes;
	int hours;
};

struct PIDate {
	int day;
	int month;
	int year; // since 1900
};

class PITimer
#ifdef WINDOWS
: public PIThread
#endif
{
public:
	PITimer(TimerEvent slot = 0, void * data = 0);
	~PITimer() {stop();}
	
	void setData(void * data_) {data = data_;}
	void setSlot(TimerEvent slot_) {ret_func = slot_;}
#ifdef WINDOWS
	void reset() {t_st = GetCurrentTime();}
#else
	void reset() {clock_gettime(0, &t_st);}
	void start(double msecs);
	void stop() {if (ti == 0) timer_delete(timer); ti = -1; running = false;}
	bool isRunning() const {return running;}
	void needLockRun(bool need) {lockRun = need;}
	void lock() {mutex_.lock();}
	void unlock() {mutex_.unlock();}
#endif
	double elapsed_n(); // nanoseconds
	double elapsed_u(); // microseconds
	double elapsed_m(); // miliseconds
	double elapsed_s(); // seconds
	
private:
#ifdef WINDOWS
	void run() {if (ret_func != 0) ret_func(data);}
	
	long int t_st, t_cur;
#else
	static void timer_event(sigval e);
	
	bool running;
	volatile bool lockRun;
	PIMutex mutex_;
	int ti;
	itimerspec spec;
	timespec t_st, t_cur;
	timer_t timer;
	sigevent se;
#endif
	
	void * data;
	TimerEvent ret_func;
	
};

PITime currentTime();
PIDate currentDate();
PIString time2string(const PITime & time, const PIString & format = "h:mm:ss");
PIString date2string(const PIDate & date, const PIString & format = "d.mm.yyyy");

#endif // PITIMER_H