public function test_w2Psgn()
{
$this->assertEquals(-1, w2Psgn(-56.2));
$this->assertEquals(0, w2Psgn(0));
$this->assertEquals(1, w2Psgn(0.01));
}
public function addDuration($duration = '8', $durationType = '1')
{
// using a sgn function lets us easily cover
// prospective and retrospective calcs at the same time
// get signum of the duration
$sgn = w2Psgn($duration);
// make duration positive
$duration = abs($duration);
if ($durationType == '24') {
// duration type is 24, full days, we're finished very quickly
$full_working_days = $duration;
} else {
if ($durationType == '1') {
// durationType is 1 hour
// get w2P time constants
$cal_day_start = (int) w2PgetConfig('cal_day_start');
$cal_day_end = (int) w2PgetConfig('cal_day_end');
$dwh = (int) w2PgetConfig('daily_working_hours');
// move to the next working day if the first day is a non-working day
$sgn > 0 ? $this->next_working_day() : $this->prev_working_day();
// calculate the hours spent on the first day
$firstDay = $sgn > 0 ? min($cal_day_end - $this->hour, $dwh) : min($this->hour - $cal_day_start, $dwh);
/*
** Catch some possible inconsistencies:
** If we're later than cal_end_day or sooner than cal_start_day then we don't need to
** subtract any time from duration. The difference is greater than the # of daily working hours
*/
if ($firstDay < 0) {
$firstDay = 0;
}
// Intraday additions are handled easily by just changing the hour value
if ($duration <= $firstDay) {
$sgn > 0 ? $this->setHour($this->hour + $duration) : $this->setHour($this->hour - $duration);
return $this;
}
// the effective first day hours value
$firstAdj = min($dwh, $firstDay);
// subtract the first day hours from the total duration
$duration -= $firstAdj;
// we've already processed the first day; move by one day!
$this->addDays(1 * $sgn);
// make sure that we didn't move to a non-working day
$sgn > 0 ? $this->next_working_day() : $this->prev_working_day();
// end of proceeding the first day
// calc the remaining time and the full working days part of this residual
$hoursRemaining = $duration > $dwh ? $duration % $dwh : $duration;
$full_working_days = round(($duration - $hoursRemaining) / $dwh);
// (proceed the full days later)
// proceed the last day now
// we prefer wed 16:00 over thu 08:00 as end date :)
if ($hoursRemaining == 0 && $full_working_day > 0) {
$full_working_days--;
$sgn > 0 ? $this->setHour($cal_day_start + $dwh) : $this->setHour($cal_day_end - $dwh);
} else {
$sgn > 0 ? $this->setHour($cal_day_start + $hoursRemaining) : $this->setHour($cal_day_end - $hoursRemaining);
}
//end of proceeding the last day
}
}
// proceeding the fulldays finally which is easy
// Full days
for ($i = 0; $i < $full_working_days; $i++) {
$this->addDays(1 * $sgn);
if (!$this->isWorkingDay()) {
// just 'ignore' this non-working day
$full_working_days++;
}
}
//end of proceeding the fulldays
return $this->next_working_day();
}