public function __construct(Date $base, $weekStart = Timestamp::WEEKDAY_MONDAY)
{
$firstDayOfMonth = Date::create($base->getYear() . '-' . $base->getMonth() . '-01');
$lastDayOfMonth = Date::create($base->getYear() . '-' . $base->getMonth() . '-' . date('t', $base->toStamp()));
$start = $firstDayOfMonth->getFirstDayOfWeek($weekStart);
$end = $lastDayOfMonth->getLastDayOfWeek($weekStart);
$this->monthRange = DateRange::create()->lazySet($firstDayOfMonth, $lastDayOfMonth);
$this->fullRange = DateRange::create()->lazySet($start, $end);
$rawDays = $this->fullRange->split();
$this->fullLength = 0;
foreach ($rawDays as $rawDay) {
$day = CalendarDay::create($rawDay->toStamp());
if ($this->monthRange->contains($day)) {
$day->setOutside(false);
} else {
$day->setOutside(true);
}
$this->days[$day->toDate()] = $day;
$weekNumber = floor($this->fullLength / 7);
if (!isset($this->weeks[$weekNumber])) {
$this->weeks[$weekNumber] = CalendarWeek::create();
}
$this->weeks[$weekNumber]->addDay($day);
++$this->fullLength;
}
++$this->fullLength;
}
public static function dayDifference(Date $left, Date $right)
{
return gregoriantojd($right->getMonth(), $right->getDay(), $right->getYear()) - gregoriantojd($left->getMonth(), $left->getDay(), $left->getYear());
}
public static function makeLastDayOfMonth(Date $date)
{
return Timestamp::create(mktime(0, 0, 0, $date->getMonth() + 1, 0, $date->getYear()));
}
