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102 lines
2.8 KiB
PHP
102 lines
2.8 KiB
PHP
<?php
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namespace Sabre\VObject\Component;
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use DateTimeInterface;
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use Sabre\VObject;
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/**
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* The VFreeBusy component.
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*
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* This component adds functionality to a component, specific for VFREEBUSY
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* components.
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*
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* @copyright Copyright (C) fruux GmbH (https://fruux.com/)
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* @author Evert Pot (http://evertpot.com/)
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* @license http://sabre.io/license/ Modified BSD License
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*/
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class VFreeBusy extends VObject\Component {
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/**
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* Checks based on the contained FREEBUSY information, if a timeslot is
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* available.
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*
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* @param DateTimeInterface $start
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* @param DateTimeInterface $end
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*
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* @return bool
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*/
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function isFree(DateTimeInterface $start, DatetimeInterface $end) {
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foreach ($this->select('FREEBUSY') as $freebusy) {
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// We are only interested in FBTYPE=BUSY (the default),
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// FBTYPE=BUSY-TENTATIVE or FBTYPE=BUSY-UNAVAILABLE.
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if (isset($freebusy['FBTYPE']) && strtoupper(substr((string)$freebusy['FBTYPE'], 0, 4)) !== 'BUSY') {
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continue;
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}
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// The freebusy component can hold more than 1 value, separated by
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// commas.
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$periods = explode(',', (string)$freebusy);
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foreach ($periods as $period) {
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// Every period is formatted as [start]/[end]. The start is an
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// absolute UTC time, the end may be an absolute UTC time, or
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// duration (relative) value.
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list($busyStart, $busyEnd) = explode('/', $period);
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$busyStart = VObject\DateTimeParser::parse($busyStart);
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$busyEnd = VObject\DateTimeParser::parse($busyEnd);
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if ($busyEnd instanceof \DateInterval) {
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$busyEnd = $busyStart->add($busyEnd);
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}
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if ($start < $busyEnd && $end > $busyStart) {
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return false;
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}
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}
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}
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return true;
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}
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/**
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* A simple list of validation rules.
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*
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* This is simply a list of properties, and how many times they either
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* must or must not appear.
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*
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* Possible values per property:
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* * 0 - Must not appear.
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* * 1 - Must appear exactly once.
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* * + - Must appear at least once.
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* * * - Can appear any number of times.
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* * ? - May appear, but not more than once.
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*
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* @var array
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*/
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function getValidationRules() {
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return [
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'UID' => 1,
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'DTSTAMP' => 1,
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'CONTACT' => '?',
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'DTSTART' => '?',
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'DTEND' => '?',
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'ORGANIZER' => '?',
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'URL' => '?',
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'ATTENDEE' => '*',
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'COMMENT' => '*',
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'FREEBUSY' => '*',
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'REQUEST-STATUS' => '*',
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];
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}
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}
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