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kolab_calendar.php
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kolab_calendar.php
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<?php
/*
+-------------------------------------------------------------------------+
| Kolab calendar storage class |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License version 2 |
| as published by the Free Software Foundation. |
| |
| PURPOSE: |
| Storage object for a single calendar folder on Kolab |
| |
+-------------------------------------------------------------------------+
| Author: Thomas Bruederli <roundcube@gmail.com> |
+-------------------------------------------------------------------------+
*/
class kolab_calendar
{
public $id;
public $ready = false;
public $readonly = true;
private $storage;
private $events;
private $id2uid;
private $imap_folder = 'INBOX/Calendar';
private $sensitivity_map = array('public', 'private', 'confidential');
private $fieldmap = array(
// kolab => roundcube
'summary' => 'title',
'location'=>'location',
'body'=>'description',
'categories'=>'categories',
'start-date'=>'start',
'end-date'=>'end',
'sensitivity'=>'sensitivity',
'show-time-as' => 'free_busy',
'alarm','alarms'
);
/**
* Default constructor
*/
public function __construct($imap_folder = null)
{
if ($imap_folder)
$this->imap_folder = $imap_folder;
// ID is derrived from folder name
$this->id = strtolower(asciiwords(strtr($this->imap_folder, '/.', '--')));
// fetch objects from the given IMAP folder
$this->storage = rcube_kolab::get_storage($this->imap_folder);
$this->ready = !PEAR::isError($this->storage);
}
/**
* Getter for a nice and human readable name for this calendar
* See http://wiki.kolab.org/UI-Concepts/Folder-Listing for reference
*
* @return string Name of this calendar
*/
public function get_name()
{
$dispname = preg_replace(array('!INBOX/Calendar/!', '!^INBOX/!', '!^shared/!', '!^user/([^/]+)/!'), array('','','','(\\1) '), $this->imap_folder);
return strlen($dispname) ? $dispname : $this->imap_folder;
}
/**
* Return color to display this calendar
*/
public function get_color()
{
// TODO: read color from backend (not yet supported)
return '0000dd';
}
/**
* Getter for a single event object
*/
public function get_event($id)
{
$this->_fetch_events();
return $this->events[$id];
}
/**
* @param integer Event's new start (unix timestamp)
* @param integer Event's new end (unix timestamp)
* @return array A list of event records
*/
public function list_events($start, $end)
{
// use Horde classes to compute recurring instances
require_once 'Horde/Date/Recurrence.php';
$this->_fetch_events();
$events = array();
foreach ($this->events as $id => $event) {
// list events in requested time window
if ($event['start'] <= $end && $event['end'] >= $start) {
$events[] = $event;
}
// resolve recurring events (maybe move to _fetch_events() for general use?)
if ($event['recurrence']) {
$recurrence = new Horde_Date_Recurrence($event['start']);
$recurrence->fromRRule20(calendar::to_rrule($event['recurrence']));
foreach ((array)$event['recurrence']['EXDATE'] as $exdate)
$recurrence->addException(date('Y', $exdate), date('n', $exdate), date('j', $exdate));
$duration = $event['end'] - $event['start'];
$next = new Horde_Date($event['start']);
while ($next = $recurrence->nextActiveRecurrence(array('year' => $next->year, 'month' => $next->month, 'mday' => $next->mday + 1, 'hour' => $next->hour, 'min' => $next->min, 'sec' => $next->sec))) {
$rec_start = $next->timestamp();
$rec_end = $rec_start + $duration;
// add to output if in range
if ($rec_start <= $end && $rec_end >= $start) {
$rec_event = $event;
$rec_event['recurrence_id'] = $event['id'];
$rec_event['start'] = $rec_start;
$rec_event['end'] = $rec_end;
$events[] = $rec_event;
}
else if ($rec_start > $end) // stop loop if out of range
break;
}
}
}
return $events;
}
/**
* Create a new event record
*
* @see Driver:new_event()
* @return mixed The created record ID on success, False on error
*/
public function insert_event($event)
{
if (!is_array($event))
return false;
write_log("err_log",$event);
//generate new event from RC input
$object = $this->_from_rcube_event($event);
//generate new UID
$object['uid'] = $this->storage->generateUID();
write_log("err_log",$object);
$saved = $this->storage->save($object);
write_log("err_log",$saved);
return $saved;
}
/**
* Update a specific event record
*
* @see Driver:new_event()
* @return boolean True on success, False on error
*/
public function update_event($event)
{
$updated = false;
$old = $this->storage->getObject($event['id']);
$object = array_merge($old, $this->_from_rcube_event($event));
$saved = $this->storage->save($object, $event['id']);
if (PEAR::isError($saved)) {
raise_error(array(
'code' => 600, 'type' => 'php',
'file' => __FILE__, 'line' => __LINE__,
'message' => "Error saving contact object to Kolab server:" . $saved->getMessage()),
true, false);
}
else {
$updated = true;
}
return $updated;
}
public function delete_event($event)
{
return true;
}
/**
* Simply fetch all records and store them in private member vars
* We thereby rely on cahcing done by the Horde classes
*/
private function _fetch_events()
{
if (!isset($this->events)) {
$this->events = array();
foreach ((array)$this->storage->getObjects() as $record) {
$event = $this->_to_rcube_event($record);
$this->events[$event['id']] = $event;
}
}
}
/**
* Convert from Kolab_Format to internal representation
*/
private function _to_rcube_event($rec)
{
$start_time = date('H:i:s', $rec['start-date']);
$allday = $start_time == '00:00:00' && $start_time == date('H:i:s', $rec['end-date']);
if ($allday) // in Roundcube all-day events only go until 23:59:59 of the last day
$rec['end-date']--;
// convert alarm time into internal format
if ($rec['alarm']) {
$alarm_value = $rec['alarm'];
$alarm_unit = 'M';
if ($rec['alarm'] % 1440 == 0) {
$alarm_value /= 1440;
$alarm_unit = 'D';
}
else if ($rec['alarm'] % 60 == 0) {
$alarm_value /= 60;
$alarm_unit = 'H';
}
$alarm_value *= -1;
}
// convert recurrence rules into internal pseudo-vcalendar format
if ($recurrence = $rec['recurrence']) {
$rrule = array(
'FREQ' => strtoupper($recurrence['cycle']),
'INTERVAL' => intval($recurrence['interval']),
);
if ($recurrence['range-type'] == 'number')
$rrule['COUNT'] = intval($recurrence['range']);
else if ($recurrence['range-type'] == 'date')
$rrule['UNTIL'] = $recurrence['range'];
if ($recurrence['day']) {
$byday = array();
$prefix = ($rrule['FREQ'] == 'MONTHLY' || $rrule['FREQ'] == 'YEARLY') ? intval($recurrence['daynumber'] ? $recurrence['daynumber'] : 1) : '';
foreach ($recurrence['day'] as $day)
$byday[] = $prefix . substr(strtoupper($day), 0, 2);
$rrule['BYDAY'] = join(',', $byday);
}
if ($recurrence['daynumber']) {
if ($recurrence['type'] == 'monthday')
$rrule['BYMONTHDAY'] = $recurrence['daynumber'];
else if ($recurrence['type'] == 'yearday')
$rrule['BYYEARDAY'] = $recurrence['daynumber'];
}
if ($rec['month']) {
$monthmap = array('january' => 1, 'february' => 2, 'march' => 3, 'april' => 4, 'may' => 5, 'june' => 6, 'july' => 7, 'august' => 8, 'september' => 9, 'october' => 10, 'november' => 11, 'december' => 12);
$rrule['BYMONTH'] = strtolower($monthmap[$recurrence['month']]);
}
if ($recurrence['exclusion']) {
foreach ((array)$recurrence['exclusion'] as $excl)
$rrule['EXDATE'][] = strtotime($excl);
}
}
$sensitivity_map = array_flip($this->sensitivity_map);
return array(
'id' => $rec['uid'],
'uid' => $rec['uid'],
'title' => $rec['summary'],
'location' => $rec['location'],
'description' => $rec['body'],
'start' => $rec['start-date'],
'end' => $rec['end-date'],
'all_day' => $allday,
'recurrence' => $rrule,
'alarms' => $alarm_value . $alarm_unit,
'categories' => $rec['categories'],
'free_busy' => $rec['show-time-as'],
'priority' => 1, // normal
'sensitivity' => $sensitivity_map[$rec['sensitivity']],
'calendar' => $this->id,
);
}
/**
* Convert the given event record into a data structure that can be passed to Kolab_Storage backend for saving
* (opposite of self::_to_rcube_event())
*/
private function _from_rcube_event($event)
{
$object = array
(
// kolab => roundcube
'summary' => $event['title'],
'location'=> $event['location'],
'body'=> $event['description'],
'categories'=> $event['categories'],
'start-date'=>$event['start'],
'end-date'=>$event['end'],
'sensitivity'=>$this->sensitivity_map[$event['sensitivity']],
'show-time-as' => $event['free_busy'],
);
//handle alarms
if ($event['alarms'])
{
//get the value
$alarmbase = explode(":",$event['alarms']);
//get number only
$avalue = preg_replace('/[^0-9]/', '', $alarmbase[0]);
if(preg_match("/H/",$alarmbase[0]))
{
$object['alarm'] = $avalue*60;
}else if (preg_match("/D/",$alarmbase[0]))
{
$object['alarm'] = $avalue*24*60;
}else
{
//minutes
$object['alarm'] = $avalue;
}
}
return $object;
}
}

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