VCalender.php

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<?php

declare(strict_types=1);

namespace ILIAS\EmployeeTalk\Service;

final class VCalender
{
    private string $name;

    private string $uid;

    private array $events;

    private string $method;

    public function __construct(string $name, string $uid, array $events, string $method)
    {
        $this->name = $name;
        $this->uid = $uid;
        $this->events = $events;
        $this->method = $method;
    }

    public function render(): string
    {
        return 'BEGIN:VCALENDAR' . "\r\n" .
            'PRODID:-//ILIAS' . "\r\n" .
            'VERSION:2.0' . "\r\n" .
            'UID:' . $this->uid . "\r\n" .
            'X-WR-RELCALID:' . $this->uid . "\r\n" .
            'NAME:' . $this->name . "\r\n" .
            'X-WR-CALNAME:' . $this->name . "\r\n" .
            'LAST-MODIFIED:' . date("Ymd\THis") . "\r\n" .
            'METHOD:' . $this->method . "\r\n" .
            'BEGIN:VTIMEZONE' . "\r\n" .
            'TZID:Europe/Paris' . "\r\n" .
            'X-LIC-LOCATION:Europe/Paris' . "\r\n" .
            'BEGIN:DAYLIGHT' . "\r\n" .
            'TZOFFSETFROM:+0100' . "\r\n" .
            'TZOFFSETTO:+0200' . "\r\n" .
            'TZNAME:CEST' . "\r\n" .
            'DTSTART:19700329T020000' . "\r\n" .
            'RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU' . "\r\n" .
            'END:DAYLIGHT' . "\r\n" .
            'BEGIN:STANDARD' . "\r\n" .
            'TZOFFSETFROM:+0200' . "\r\n" .
            'TZOFFSETTO:+0100' . "\r\n" .
            'TZNAME:CET' . "\r\n" .
            'DTSTART:19701025T030000' . "\r\n" .
            'RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU' . "\r\n" .
            'END:STANDARD' . "\r\n" .
            'END:VTIMEZONE' . "\r\n" .

            $this->renderVEvents() .

            'END:VCALENDAR' . "\r\n";
    }

    public function getName(): string
    {
        return $this->name;
    }

    public function getUid(): string
    {
        return $this->uid;
    }

    public function getEvents(): array
    {
        return $this->events;
    }

    public function getMethod(): string
    {
        return $this->method;
    }

    private function renderVEvents(): string
    {
        $eventString = "";
        foreach ($this->events as $event) {
            $eventString .= $event->render();
        }

        return $eventString;
    }
}