protected function chunkTimeslots(Vacancy $vacancy, $step = 30)
{
$times = [];
$startTime = $vacancy->start_at->timezone($vacancy->business->timezone)->toTimeString();
$startKey = date('Y-m-d H:i', strtotime("{$vacancy->date} {$startTime}")) . ' ' . $vacancy->business->timezone;
$finishTime = $vacancy->finish_at->timezone($vacancy->business->timezone)->toTimeString();
$endKey = date('Y-m-d H:i', strtotime("{$vacancy->date} {$finishTime}")) . ' ' . $vacancy->business->timezone;
$fromTime = Carbon::parse($startKey);
$toTime = $fromTime->copy()->addMinutes($step);
$limit = Carbon::parse($endKey);
while ($fromTime <= $limit) {
$key = $fromTime->timezone($vacancy->business->timezone)->format('H:i');
$capacity = $vacancy->getAvailableCapacityBetween($fromTime, $toTime);
if ($capacity > 0) {
$times[$key] = $capacity;
}
$toTime->addMinutes($step);
$fromTime->addMinutes($step);
}
return $times;
}
