PHP Decode

<?php

declare(strict_types=1);

namespace Sabre\CalDAV;

class TestUtil
{
    public static function getBackend()
    {
        $backend = new Backend\Mock();
        $calendarId = $backend->createCalendar(
            'principals/user1',
            'UUID-123467',
            [
                '{DAV:}displayname' => 'user1 calendar',
                '{urn:ietf:params:xml:ns:caldav}calendar-description' => 'Calendar description',
                '{http://apple.com/ns/ical/}calendar-order' => '1',
                '{http://apple.com/ns/ical/}calendar-color' => '#FF0000',
            ]
        );
        $backend->createCalendar(
            'principals/user1',
            'UUID-123468',
            [
                '{DAV:}displayname' => 'user1 calendar2',
                '{urn:ietf:params:xml:ns:caldav}calendar-description' => 'Calendar description',
                '{http://apple.com/ns/ical/}calendar-order' => '1',
                '{http://apple.com/ns/ical/}calendar-color' => '#FF0000',
            ]
        );
        $backend->createCalendarObject($calendarId, 'UUID-2345', self::getTestCalendarData());

        return $backend;
    }

    public static function getTestCalendarData($type = 1)
    {
        $calendarData = 'BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Apple Inc.//iCal 4.0.1//EN
CALSCALE:GREGORIAN
BEGIN:VTIMEZONE
TZID:Asia/Seoul
BEGIN:DAYLIGHT
TZOFFSETFROM:+0900
RRULE:FREQ=YEARLY;UNTIL=19880507T150000Z;BYMONTH=5;BYDAY=2SU
DTSTART:19870510T000000
TZNAME:GMT+09:00
TZOFFSETTO:+1000
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+1000
DTSTART:19881009T000000
TZNAME:GMT+09:00
TZOFFSETTO:+0900
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
CREATED:20100225T154229Z
UID:39A6B5ED-DD51-4AFE-A683-C35EE3749627
TRANSP:TRANSPARENT
SUMMARY:Something here
DTSTAMP:20100228T130202Z';

        switch ($type) {
            case 1:
                $calendarData .= "\nDTSTART;TZID=Asia/Seoul:20100223T060000\nDTEND;TZID=Asia/Seoul:20100223T070000\n";
                break;
            case 2:
                $calendarData .= "\nDTSTART:20100223T060000\nDTEND:20100223T070000\n";
                break;
            case 3:
                $calendarData .= "\nDTSTART;VALUE=DATE:20100223\nDTEND;VALUE=DATE:20100223\n";
                break;
            case 4:
                $calendarData .= "\nDTSTART;TZID=Asia/Seoul:20100223T060000\nDURATION:PT1H\n";
                break;
            case 5:
                $calendarData .= "\nDTSTART;TZID=Asia/Seoul:20100223T060000\nDURATION:-P5D\n";
                break;
            case 6:
                $calendarData .= "\nDTSTART;VALUE=DATE:20100223\n";
                break;
            case 7:
                $calendarData .= "\nDTSTART;VALUE=DATETIME:20100223T060000\n";
                break;

            // No DTSTART, so intentionally broken
            case 'X':
                $calendarData .= "\n";
                break;
        }

        $calendarData .= 'ATTENDEE;PARTSTAT=NEEDS-ACTION:mailto:[email protected]
SEQUENCE:2
END:VEVENT
END:VCALENDAR';

        return $calendarData;
    }
}