--- /dev/null
+<?php
+
+namespace Sabre\VObject;
+
+/**
+ * This class helps with generating FREEBUSY reports based on existing sets of
+ * objects.
+ *
+ * It only looks at VEVENT and VFREEBUSY objects from the sourcedata, and
+ * generates a single VFREEBUSY object.
+ *
+ * VFREEBUSY components are described in RFC5545, The rules for what should
+ * go in a single freebusy report is taken from RFC4791, section 7.10.
+ *
+ * @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
+ * @author Evert Pot (http://www.rooftopsolutions.nl/)
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+class FreeBusyGenerator {
+
+ /**
+ * Input objects
+ *
+ * @var array
+ */
+ protected $objects;
+
+ /**
+ * Start of range
+ *
+ * @var DateTime|null
+ */
+ protected $start;
+
+ /**
+ * End of range
+ *
+ * @var DateTime|null
+ */
+ protected $end;
+
+ /**
+ * VCALENDAR object
+ *
+ * @var Component
+ */
+ protected $baseObject;
+
+ /**
+ * Creates the generator.
+ *
+ * Check the setTimeRange and setObjects methods for details about the
+ * arguments.
+ *
+ * @param DateTime $start
+ * @param DateTime $end
+ * @param mixed $objects
+ * @return void
+ */
+ public function __construct(\DateTime $start = null, \DateTime $end = null, $objects = null) {
+
+ if ($start && $end) {
+ $this->setTimeRange($start, $end);
+ }
+
+ if ($objects) {
+ $this->setObjects($objects);
+ }
+
+ }
+
+ /**
+ * Sets the VCALENDAR object.
+ *
+ * If this is set, it will not be generated for you. You are responsible
+ * for setting things like the METHOD, CALSCALE, VERSION, etc..
+ *
+ * The VFREEBUSY object will be automatically added though.
+ *
+ * @param Component $vcalendar
+ * @return void
+ */
+ public function setBaseObject(Component $vcalendar) {
+
+ $this->baseObject = $vcalendar;
+
+ }
+
+ /**
+ * Sets the input objects
+ *
+ * You must either specify a valendar object as a strong, or as the parse
+ * Component.
+ * It's also possible to specify multiple objects as an array.
+ *
+ * @param mixed $objects
+ * @return void
+ */
+ public function setObjects($objects) {
+
+ if (!is_array($objects)) {
+ $objects = array($objects);
+ }
+
+ $this->objects = array();
+ foreach($objects as $object) {
+
+ if (is_string($object)) {
+ $this->objects[] = Reader::read($object);
+ } elseif ($object instanceof Component) {
+ $this->objects[] = $object;
+ } else {
+ throw new \InvalidArgumentException('You can only pass strings or \\Sabre\\VObject\\Component arguments to setObjects');
+ }
+
+ }
+
+ }
+
+ /**
+ * Sets the time range
+ *
+ * Any freebusy object falling outside of this time range will be ignored.
+ *
+ * @param DateTime $start
+ * @param DateTime $end
+ * @return void
+ */
+ public function setTimeRange(\DateTime $start = null, \DateTime $end = null) {
+
+ $this->start = $start;
+ $this->end = $end;
+
+ }
+
+ /**
+ * Parses the input data and returns a correct VFREEBUSY object, wrapped in
+ * a VCALENDAR.
+ *
+ * @return Component
+ */
+ public function getResult() {
+
+ $busyTimes = array();
+
+ foreach($this->objects as $object) {
+
+ foreach($object->getBaseComponents() as $component) {
+
+ switch($component->name) {
+
+ case 'VEVENT' :
+
+ $FBTYPE = 'BUSY';
+ if (isset($component->TRANSP) && (strtoupper($component->TRANSP) === 'TRANSPARENT')) {
+ break;
+ }
+ if (isset($component->STATUS)) {
+ $status = strtoupper($component->STATUS);
+ if ($status==='CANCELLED') {
+ break;
+ }
+ if ($status==='TENTATIVE') {
+ $FBTYPE = 'BUSY-TENTATIVE';
+ }
+ }
+
+ $times = array();
+
+ if ($component->RRULE) {
+
+ $iterator = new RecurrenceIterator($object, (string)$component->uid);
+ if ($this->start) {
+ $iterator->fastForward($this->start);
+ }
+
+ $maxRecurrences = 200;
+
+ while($iterator->valid() && --$maxRecurrences) {
+
+ $startTime = $iterator->getDTStart();
+ if ($this->end && $startTime > $this->end) {
+ break;
+ }
+ $times[] = array(
+ $iterator->getDTStart(),
+ $iterator->getDTEnd(),
+ );
+
+ $iterator->next();
+
+ }
+
+ } else {
+
+ $startTime = $component->DTSTART->getDateTime();
+ if ($this->end && $startTime > $this->end) {
+ break;
+ }
+ $endTime = null;
+ if (isset($component->DTEND)) {
+ $endTime = $component->DTEND->getDateTime();
+ } elseif (isset($component->DURATION)) {
+ $duration = DateTimeParser::parseDuration((string)$component->DURATION);
+ $endTime = clone $startTime;
+ $endTime->add($duration);
+ } elseif ($component->DTSTART->getDateType() === Property\DateTime::DATE) {
+ $endTime = clone $startTime;
+ $endTime->modify('+1 day');
+ } else {
+ // The event had no duration (0 seconds)
+ break;
+ }
+
+ $times[] = array($startTime, $endTime);
+
+ }
+
+ foreach($times as $time) {
+
+ if ($this->end && $time[0] > $this->end) break;
+ if ($this->start && $time[1] < $this->start) break;
+
+ $busyTimes[] = array(
+ $time[0],
+ $time[1],
+ $FBTYPE,
+ );
+ }
+ break;
+
+ case 'VFREEBUSY' :
+ foreach($component->FREEBUSY as $freebusy) {
+
+ $fbType = isset($freebusy['FBTYPE'])?strtoupper($freebusy['FBTYPE']):'BUSY';
+
+ // Skipping intervals marked as 'free'
+ if ($fbType==='FREE')
+ continue;
+
+ $values = explode(',', $freebusy);
+ foreach($values as $value) {
+ list($startTime, $endTime) = explode('/', $value);
+ $startTime = DateTimeParser::parseDateTime($startTime);
+
+ if (substr($endTime,0,1)==='P' || substr($endTime,0,2)==='-P') {
+ $duration = DateTimeParser::parseDuration($endTime);
+ $endTime = clone $startTime;
+ $endTime->add($duration);
+ } else {
+ $endTime = DateTimeParser::parseDateTime($endTime);
+ }
+
+ if($this->start && $this->start > $endTime) continue;
+ if($this->end && $this->end < $startTime) continue;
+ $busyTimes[] = array(
+ $startTime,
+ $endTime,
+ $fbType
+ );
+
+ }
+
+
+ }
+ break;
+
+
+
+ }
+
+
+ }
+
+ }
+
+ if ($this->baseObject) {
+ $calendar = $this->baseObject;
+ } else {
+ $calendar = new Component('VCALENDAR');
+ $calendar->version = '2.0';
+ $calendar->prodid = '-//Sabre//Sabre VObject ' . Version::VERSION . '//EN';
+ $calendar->calscale = 'GREGORIAN';
+ }
+
+ $vfreebusy = new Component('VFREEBUSY');
+ $calendar->add($vfreebusy);
+
+ if ($this->start) {
+ $dtstart = new Property\DateTime('DTSTART');
+ $dtstart->setDateTime($this->start,Property\DateTime::UTC);
+ $vfreebusy->add($dtstart);
+ }
+ if ($this->end) {
+ $dtend = new Property\DateTime('DTEND');
+ $dtend->setDateTime($this->start,Property\DateTime::UTC);
+ $vfreebusy->add($dtend);
+ }
+ $dtstamp = new Property\DateTime('DTSTAMP');
+ $dtstamp->setDateTime(new \DateTime('now'), Property\DateTime::UTC);
+ $vfreebusy->add($dtstamp);
+
+ foreach($busyTimes as $busyTime) {
+
+ $busyTime[0]->setTimeZone(new \DateTimeZone('UTC'));
+ $busyTime[1]->setTimeZone(new \DateTimeZone('UTC'));
+
+ $prop = new Property(
+ 'FREEBUSY',
+ $busyTime[0]->format('Ymd\\THis\\Z') . '/' . $busyTime[1]->format('Ymd\\THis\\Z')
+ );
+ $prop['FBTYPE'] = $busyTime[2];
+ $vfreebusy->add($prop);
+
+ }
+
+ return $calendar;
+
+ }
+
+}
+
projects / friendica-addons.git / blobdiff