observance.php

См. документацию.

<?php
 
 
namespace Bitrix\Calendar\ICal\Basic;
 
 
use Bitrix\Calendar\ICal\MailInvitation\Helper;
use Bitrix\Calendar\Util;
use DateTimeZone;
 
abstract class Observance extends BasicComponent
{
    protected $start;
    protected $offsetFrom;
    protected $offsetTo;
    protected $timezone;
 
    public static function createInstance(): Observance
    {
        return new static();
    }
 
    public function getProperties(): array
    {
        return [
            'DTSTART',
            'TZOFFSETFROM',
            'TZOFFSETTO',
        ];
    }

    public function setDTStart($start = null): Observance
    {
        $this->start = $start ? $start : Helper::getIcalDateTimeShort('19700101T000000');
 
        return $this;
    }

    public function setOffsetFrom(DateTimeZone $tz): Observance
    {
        $time = Util::getDateObject(null, false, $tz->getName());
        $this->offsetFrom = $time->format('O');
 
        return $this;
    }
 
    public function setOffsetFromValue(string $value): Observance
    {
        $this->offsetFrom = $value;
        return $this;
    }

    public function setOffsetTo(DateTimeZone $tz): Observance
    {
        $time = Util::getDateObject(null, false, $tz->getName());
        $this->offsetTo = $time->format('O');
        return $this;
    }
 
    public function setOffsetToValue(string $value): Observance
    {
        $this->offsetTo = $value;
        return $this;
    }
 
    public function setAbbrTimezone($tz): Observance
    {
        $exp = (new \DateTime($tz))->format('T');
        $this->timezone = (new \DateTime())->setTimeZone(new DateTimeZone($tz))->format('T');
        return $this;
    }
 
    public function setTimezoneFromAbbr(?string $abbr): Observance
    {
        $this->timezone = $abbr;
        return $this;
    }
 
    public function setContent(): Content
    {
        return Content::getInstance($this->getType())
            ->dateTimeProperty('DTSTART', $this->start, true, false)
            ->textProperty('TZOFFSETFROM', $this->offsetFrom)
            ->textProperty('TZOFFSETTO', $this->offsetTo)
            ->textProperty('TZNAME', $this->timezone);
    }
}