/*
    PIP - Platform Independent Primitives
    Timer
    Copyright (C) 2012  Ivan Pelipenko peri4ko@gmail.com

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "pitimer.h"


PITimer::PITimer(TimerEvent slot, void * data_)
#ifdef WINDOWS
: PIThread() {
#else
: PIObject() {
#endif
	ret_func = slot;
	data = data_;
#ifndef WINDOWS
	piMonitor.timers++;
	ti = -1;
	running = false;
	se.sigev_notify = SIGEV_THREAD;
	se.sigev_value.sival_ptr = this;
	se.sigev_notify_function = timer_event;
	se.sigev_notify_attributes = 0;
	lockRun = false;
#endif
	reset();
	/*addEvent<void*, int>("timeout");
	addEventHandler<double>(HANDLER(PITimer, start));
	addEventHandler(HANDLER(PITimer, stop));
	addEventHandler(HANDLER(PITimer, reset));*/
}


PITimer::~PITimer() {
#ifndef WINDOWS
	piMonitor.timers--;
#endif
	stop();
}


#ifndef WINDOWS
void PITimer::start(double msecs) {
	if (ti == 0 || msecs < 0) return;
	spec.it_interval.tv_nsec = ((int)(msecs * 1000) % 1000000) * 1000;
	spec.it_interval.tv_sec = (time_t)(msecs / 1000);
	spec.it_value = spec.it_interval;
	ti = timer_create(CLOCK_REALTIME, &se, &timer);
	if (ti == -1) {
		piCout << "[PITimer] Can`t create timer for " << msecs << " msecs: " << errorString() << endl;
		return;
	}
	timer_settime(timer, 0, &spec, 0);
	running = true;
}


void PITimer::timer_event(sigval e) {
	PITimer * ct = (PITimer * )e.sival_ptr;
	if (!ct->running) return;
	if (ct->lockRun) ct->lock();
	if (ct->ret_func != 0) ct->ret_func(ct->data, 1);
	raiseEvent<void*, int>(ct, "timeout", ct->data, 1);
	piForeach (TimerSlot & i, ct->ret_funcs) {
		if (i.delim > ++(i.tick)) continue;
		i.tick = 0;
		if (i.slot != 0) i.slot(ct->data, i.delim);
		else if (ct->ret_func != 0) ct->ret_func(ct->data, i.delim);
		raiseEvent<void*, int>(ct, "timeout", ct->data, i.delim);
	}
	if (ct->lockRun) ct->unlock();
}


bool PITimer::waitForFinish(int timeout_msecs) {
	if (timeout_msecs < 0) {
		while (running)
			msleep(1);
		return true;
	}
	int cnt = 0;
	while (running && cnt < timeout_msecs) {
		msleep(1);
		++cnt;
	}
	return cnt < timeout_msecs;
}


#else
void PITimer::run() {
	if (!running) return;
	if (lockRun) lock();
	if (ret_func != 0) ret_func(data, 1);
	raiseEvent<void*, int>(this, "timeout", data, 1);
	piForeach (TimerSlot & i, ret_funcs) {
		if (i.delim > ++(i.tick)) continue;
		i.tick = 0;
		if (i.slot != 0) i.slot(data, i.delim);
		else if (ret_func != 0) ret_func(data, i.delim);
		raiseEvent<void*, int>(this, "timeout", data, i.delim);
	}
	if (lockRun) unlock();
}
#endif


double PITimer::elapsed_n() {
#ifdef WINDOWS
	t_cur = GetCurrentTime();
	return (t_cur - t_st) * 1000000.;
#else
	clock_gettime(0, &t_cur);
	return (t_cur.tv_sec - t_st.tv_sec) * 1.e+9 + (t_cur.tv_nsec - t_st.tv_nsec);
#endif
}


double PITimer::elapsed_u() {
#ifdef WINDOWS
	t_cur = GetCurrentTime();
	return (t_cur - t_st) * 1000.;
#else
	clock_gettime(0, &t_cur);
	return (t_cur.tv_sec - t_st.tv_sec) * 1.e+6 + (t_cur.tv_nsec - t_st.tv_nsec) / 1.e+3;
#endif
}


double PITimer::elapsed_m() {
#ifdef WINDOWS
	t_cur = GetCurrentTime();
	return (double)(t_cur - t_st);
#else
	clock_gettime(0, &t_cur);
	return (t_cur.tv_sec - t_st.tv_sec) * 1.e+3 + (t_cur.tv_nsec - t_st.tv_nsec) / 1.e+6;
#endif
}


double PITimer::elapsed_s() {
#ifdef WINDOWS
	t_cur = GetCurrentTime();
	return (t_cur - t_st) / 1000.;
#else
	clock_gettime(0, &t_cur);
	return (t_cur.tv_sec - t_st.tv_sec) + (t_cur.tv_nsec - t_st.tv_nsec) / 1.e+9;
#endif
}


double PITimer::reset_time_n() {
#ifdef WINDOWS
	t_cur = GetCurrentTime();
	return t_st * 1000000.;
#else
	clock_gettime(0, &t_cur);
	return t_st.tv_sec * 1.e+9 + t_st.tv_nsec;
#endif
}


double PITimer::reset_time_u() {
#ifdef WINDOWS
	t_cur = GetCurrentTime();
	return (t_cur - t_st) * 1000.;
#else
	clock_gettime(0, &t_cur);
	return t_st.tv_sec * 1.e+6 + t_st.tv_nsec / 1.e+3;
#endif
}


double PITimer::reset_time_m() {
#ifdef WINDOWS
	t_cur = GetCurrentTime();
	return (double)(t_cur - t_st);
#else
	clock_gettime(0, &t_cur);
	return t_st.tv_sec * 1.e+3 + t_st.tv_nsec / 1.e+6;
#endif
}


double PITimer::reset_time_s() {
#ifdef WINDOWS
	t_cur = GetCurrentTime();
	return (t_cur - t_st) / 1000.;
#else
	clock_gettime(0, &t_cur);
	return t_st.tv_sec + t_st.tv_nsec / 1.e+9;
#endif
}


double PITimer::elapsed_system_n() {
#ifdef WINDOWS
	long t_cur = GetCurrentTime();
	return (t_cur * 1000000.);
#else
	timespec t_cur;
	clock_gettime(0, &t_cur);
	return (t_cur.tv_sec * 1.e+9 + t_cur.tv_nsec);
#endif
}


double PITimer::elapsed_system_u() {
#ifdef WINDOWS
	long t_cur = GetCurrentTime();
	return (t_cur * 1000.);
#else
	timespec t_cur;
	clock_gettime(0, &t_cur);
	return (t_cur.tv_sec * 1.e+6 + (t_cur.tv_nsec / 1.e+3));
#endif
}


double PITimer::elapsed_system_m() {
#ifdef WINDOWS
	long t_cur = GetCurrentTime();
	return (double)t_cur;
#else
	timespec t_cur;
	clock_gettime(0, &t_cur);
	return (t_cur.tv_sec * 1.e+3 + (t_cur.tv_nsec / 1.e+6));
#endif
}


double PITimer::elapsed_system_s() {
#ifdef WINDOWS
	long t_cur = GetCurrentTime();
	return (t_cur / 1000.);
#else
	timespec t_cur;
	clock_gettime(0, &t_cur);
	return (t_cur.tv_sec + (t_cur.tv_nsec / 1.e+9));
#endif
}


PITime currentTime() {
	time_t rt = time(0);
	tm * pt = localtime(&rt);
	PITime t;
	t.seconds = pt->tm_sec;
	t.minutes = pt->tm_min;
	t.hours = pt->tm_hour;
	return t;
}


PIDate currentDate() {
	time_t rt = time(0);
	tm * pt = localtime(&rt);
	PIDate d;
	d.day = pt->tm_mday;
	d.month = pt->tm_mon + 1;
	d.year = pt->tm_year + 1900;
	return d;
}


PIString PITime::toString(const PIString & format) {
	PIString ts = format;
	ts.replace("hh", PIString::fromNumber(hours).expandLeftTo(2, '0'));
	ts.replace("h", PIString::fromNumber(hours));
	ts.replace("mm", PIString::fromNumber(minutes).expandLeftTo(2, '0'));
	ts.replace("m", PIString::fromNumber(minutes));
	ts.replace("ss", PIString::fromNumber(seconds).expandLeftTo(2, '0'));
	ts.replace("s", PIString::fromNumber(seconds));
	return ts;
}


PIString PIDate::toString(const PIString & format) {
	PIString ts = format;
	ts.replace("yyyy", PIString::fromNumber(year).expandLeftTo(4, '0'));
	ts.replace("yy", PIString::fromNumber(year).expandLeftTo(2, '0'));
	ts.replace("y", PIString::fromNumber(year));
	ts.replace("mm", PIString::fromNumber(month).expandLeftTo(2, '0'));
	ts.replace("m", PIString::fromNumber(month));
	ts.replace("dd", PIString::fromNumber(day).expandLeftTo(2, '0'));
	ts.replace("d", PIString::fromNumber(day));
	return ts;
}


PIString time2string(const PITime & time, const PIString & format) {
	PIString ts = format;
	ts.replace("hh", PIString::fromNumber(time.hours).expandLeftTo(2, '0'));
	ts.replace("h", PIString::fromNumber(time.hours));
	ts.replace("mm", PIString::fromNumber(time.minutes).expandLeftTo(2, '0'));
	ts.replace("m", PIString::fromNumber(time.minutes));
	ts.replace("ss", PIString::fromNumber(time.seconds).expandLeftTo(2, '0'));
	ts.replace("s", PIString::fromNumber(time.seconds));
	return ts;
}


PIString date2string(const PIDate & date, const PIString & format) {
	PIString ts = format;
	ts.replace("yyyy", PIString::fromNumber(date.year).expandLeftTo(4, '0'));
	ts.replace("yy", PIString::fromNumber(date.year).expandLeftTo(2, '0'));
	ts.replace("y", PIString::fromNumber(date.year));
	ts.replace("mm", PIString::fromNumber(date.month).expandLeftTo(2, '0'));
	ts.replace("m", PIString::fromNumber(date.month));
	ts.replace("dd", PIString::fromNumber(date.day).expandLeftTo(2, '0'));
	ts.replace("d", PIString::fromNumber(date.day));
	return ts;
}