1 files changed, 297 insertions, 42 deletions

diff --git a/apps/calendar/lib/app.php b/apps/calendar/lib/app.php
index 4b481a4f286..3ce0d6fa1d4 100644
--- a/apps/calendar/lib/app.php
+++ b/apps/calendar/lib/app.php
@@ -1,60 +1,121 @@
 <?php
 /**
  * Copyright (c) 2011 Bart Visscher <bartv@thisnet.nl>
+ * Copyright (c) 2012 Georg Ehrke <georg@owncloud.com>
  * This file is licensed under the Affero General Public License version 3 or
  * later.
  * See the COPYING-README file.
- */
-
-/**
+ * 
  * This class manages our app actions
  */
-OC_Calendar_App::$l10n = OC_L10N::get('calendar');
+OC_Calendar_App::$l10n = new OC_L10N('calendar');
+OC_Calendar_App::$tz = OC_Preferences::getValue(OC_USER::getUser(), 'calendar', 'timezone', date_default_timezone_get());
 class OC_Calendar_App{
+	const CALENDAR = 'calendar';
+	const EVENT = 'event';
+	/*
+	 * @brief language object for calendar app
+	 */
 	public static $l10n;
+	
+	/*
+	 * @brief categories of the user
+	 */
 	protected static $categories = null;
 
-	public static function getCalendar($id){
-		$calendar = OC_Calendar_Calendar::find( $id );
-		if( $calendar === false || $calendar['userid'] != OC_User::getUser()){
-			OC_JSON::error(array('data' => array('message' => self::$l10n->t('Wrong calendar'))));
-			exit();
+	/*
+	 * @brief timezone of the user
+	 */
+	public static $tz;
+	
+	/*
+	 * @brief returns informations about a calendar
+	 * @param int $id - id of the calendar
+	 * @param bool $security - check access rights or not
+	 * @param bool $shared - check if the user got access via sharing
+	 * @return mixed - bool / array
+	 */
+	public static function getCalendar($id, $security = true, $shared = false){
+		$calendar = OC_Calendar_Calendar::find($id);
+		if($shared === true){
+			if(OC_Calendar_Share::check_access(OC_User::getUser(), $id, OC_Calendar_Share::CALENDAR)){
+				return $calendar;
+			}
+		}
+		if($security === true){
+			if($calendar['userid'] != OC_User::getUser()){
+				return false;
+			}
 		}
-		return $calendar;
+		if($calendar === false){
+			return false;
+		}
+		return OC_Calendar_Calendar::find($id);
 	}
-
-	public static function getEventObject($id){
-		$event_object = OC_Calendar_Object::find( $id );
-		if( $event_object === false ){
-			OC_JSON::error();
-			exit();
+	
+	/*
+	 * @brief returns informations about an event
+	 * @param int $id - id of the event
+	 * @param bool $security - check access rights or not
+	 * @param bool $shared - check if the user got access via sharing
+	 * @return mixed - bool / array
+	 */
+	public static function getEventObject($id, $security = true, $shared = false){
+		$event = OC_Calendar_Object::find($id);
+		if($shared === true){
+			if(OC_Calendar_Share::check_access(OC_User::getUser(), $id, OC_Calendar_Share::EVENT)){
+				return $event;
+			}
 		}
-
-		self::getCalendar( $event_object['calendarid'] );//access check
-		return $event_object;
+		if($security === true){
+			$calendar = self::getCalendar($event['calendarid'], false);
+			if($calendar['userid'] != OC_User::getUser()){
+				return false;
+			}
+		}
+		if($event === false){
+			return false;
+		}
+		return $event;
 	}
-
-	public static function getVCalendar($id){
-		$event_object = self::getEventObject( $id );
-
-		$vcalendar = OC_VObject::parse($event_object['calendardata']);
-		// Check if the vcalendar is valid
-		if(is_null($vcalendar)){
-			OC_JSON::error();
-			exit();
+	
+	/*
+	 * @brief returns the parsed calendar data
+	 * @param int $id - id of the event
+	 * @param bool $security - check access rights or not
+	 * @return mixed - bool / object
+	 */
+	public static function getVCalendar($id, $security = true, $shared = false){
+		$event_object = self::getEventObject($id, $security, $shared);
+		if($event_object === false){
+			return false;
+		}
+		$vobject = OC_VObject::parse($event_object['calendardata']);
+		if(is_null($vobject)){
+			return false;
 		}
-		return $vcalendar;
+		return $vobject;
 	}
-
-	public static function isNotModified($vevent, $lastmodified)
-	{
+	
+	/*
+	 * @brief checks if an event was edited and dies if it was
+	 * @param (object) $vevent - vevent object of the event
+	 * @param (int) $lastmodified - time of last modification as unix timestamp
+	 * @return (bool)
+	 */
+	public static function isNotModified($vevent, $lastmodified){
 		$last_modified = $vevent->__get('LAST-MODIFIED');
 		if($last_modified && $lastmodified != $last_modified->getDateTime()->format('U')){
 			OC_JSON::error(array('modified'=>true));
 			exit;
 		}
+		return true;
 	}
-
+	
+	/*
+	 * @brief returns the default categories of ownCloud
+	 * @return (array) $categories
+	 */
 	protected static function getDefaultCategories()
 	{
 		return array(
@@ -75,14 +136,22 @@ class OC_Calendar_App{
 			self::$l10n->t('Work'),
 		);
 	}
-
+	
+	/*
+	 * @brief returns the vcategories object of the user
+	 * @return (object) $vcategories
+	 */
 	protected static function getVCategories() {
 		if (is_null(self::$categories)) {
 			self::$categories = new OC_VCategories('calendar', null, self::getDefaultCategories());
 		}
 		return self::$categories;
 	}
-
+	
+	/*
+	 * @brief returns the categories of the vcategories object
+	 * @return (array) $categories
+	 */
 	public static function getCategoryOptions()
 	{
 		$categories = self::getVCategories()->categories();
@@ -127,40 +196,226 @@ class OC_Calendar_App{
 	public static function getRepeatOptions(){
 		return OC_Calendar_Object::getRepeatOptions(self::$l10n);
 	}
-
+	
+	/*
+	 * @brief returns the options for the end of an repeating event
+	 * @return array - valid inputs for the end of an repeating events
+	 */
 	public static function getEndOptions(){
 		return OC_Calendar_Object::getEndOptions(self::$l10n);
 	}
-
+	
+	/*
+	 * @brief returns the options for an monthly repeating event
+	 * @return array - valid inputs for monthly repeating events
+	 */
 	public static function getMonthOptions(){
 		return OC_Calendar_Object::getMonthOptions(self::$l10n);
 	}
-
+	
+	/*
+	 * @brief returns the options for an weekly repeating event
+	 * @return array - valid inputs for weekly repeating events
+	 */
 	public static function getWeeklyOptions(){
 		return OC_Calendar_Object::getWeeklyOptions(self::$l10n);
 	}
-
+	
+	/*
+	 * @brief returns the options for an yearly repeating event
+	 * @return array - valid inputs for yearly repeating events
+	 */
 	public static function getYearOptions(){
 		return OC_Calendar_Object::getYearOptions(self::$l10n);
 	}
-
+	
+	/*
+	 * @brief returns the options for an yearly repeating event which occurs on specific days of the year
+	 * @return array - valid inputs for yearly repeating events
+	 */
 	public static function getByYearDayOptions(){
 		return OC_Calendar_Object::getByYearDayOptions();
 	}
-
+	
+	/*
+	 * @brief returns the options for an yearly repeating event which occurs on specific month of the year
+	 * @return array - valid inputs for yearly repeating events
+	 */
 	public static function getByMonthOptions(){
 		return OC_Calendar_Object::getByMonthOptions(self::$l10n);
 	}
 	
+	/*
+	 * @brief returns the options for an yearly repeating event which occurs on specific week numbers of the year
+	 * @return array - valid inputs for yearly repeating events
+	 */
 	public static function getByWeekNoOptions(){
 		return OC_Calendar_Object::getByWeekNoOptions();
 	}
-
+	
+	/*
+	 * @brief returns the options for an yearly or monthly repeating event which occurs on specific days of the month
+	 * @return array - valid inputs for yearly or monthly repeating events
+	 */
 	public static function getByMonthDayOptions(){
 		return OC_Calendar_Object::getByMonthDayOptions();
 	}
 	
+	/*
+	 * @brief returns the options for an monthly repeating event which occurs on specific weeks of the month
+	 * @return array - valid inputs for monthly repeating events
+	 */
 	public static function getWeekofMonth(){
 		return OC_Calendar_Object::getWeekofMonth(self::$l10n);
 	}
+	
+	/*
+	 * @brief checks the access for a calendar / an event
+	 * @param (int) $id - id of the calendar / event
+	 * @param (string) $type - type of the id (calendar/event)
+	 * @return (string) $access - level of access
+	 */
+	public static function getaccess($id, $type){
+		if($type == self::CALENDAR){
+			$calendar = self::getCalendar($id, false, false);
+			if($calendar['userid'] == OC_User::getUser()){
+				return 'owner';
+			}
+			$isshared = OC_Calendar_Share::check_access(OC_User::getUser(), $id, OC_Calendar_Share::CALENDAR);
+			if($isshared){
+				$writeaccess = OC_Calendar_Share::is_editing_allowed(OC_User::getUser(), $id, OC_Calendar_Share::CALENDAR);
+				if($writeaccess){
+					return 'rw';
+				}else{
+					return 'r';
+				}
+			}else{
+				return false;
+			}
+		}elseif($type == self::EVENT){
+			if(OC_Calendar_Object::getowner($id) == OC_User::getUser()){
+				return 'owner';
+			}
+			$isshared = OC_Calendar_Share::check_access(OC_User::getUser(), $id, OC_Calendar_Share::EVENT);
+			if($isshared){
+				$writeaccess = OC_Calendar_Share::is_editing_allowed(OC_User::getUser(), $id, OC_Calendar_Share::EVENT);
+				if($writeaccess){
+					return 'rw';
+				}else{
+					return 'r';
+				}
+			}else{
+				return false;
+			}
+		}
+	}
+	
+	/*
+	 * @brief analyses the parameter for calendar parameter and returns the objects
+	 * @param (string) $calendarid - calendarid
+	 * @param (int) $start - unixtimestamp of start
+	 * @param (int) $end - unixtimestamp of end
+	 * @return (array) $events 
+	 */
+	public static function getrequestedEvents($calendarid, $start, $end){
+		$events = array();
+		if($calendarid == 'shared_rw' || $_GET['calendar_id'] == 'shared_r'){
+			$calendars = OC_Calendar_Share::allSharedwithuser(OC_USER::getUser(), OC_Calendar_Share::CALENDAR, 1, ($_GET['calendar_id'] == 'shared_rw')?'rw':'r');
+			foreach($calendars as $calendar){
+				$calendarevents = OC_Calendar_Object::allInPeriod($calendar['calendarid'], $start, $end);
+				$events = array_merge($events, $calendarevents);
+			}
+			$singleevents = OC_Calendar_Share::allSharedwithuser(OC_USER::getUser(), OC_Calendar_Share::EVENT, 1, ($_GET['calendar_id'] == 'shared_rw')?'rw':'r');
+			foreach($singleevents as $singleevent){
+				$event = OC_Calendar_Object::find($singleevent['eventid']);
+				$events[] =  $event;
+			}
+		}else{
+			$calendar_id = $_GET['calendar_id'];
+			if (is_numeric($calendar_id)) {
+				$calendar = self::getCalendar($calendar_id);
+				OC_Response::enableCaching(0);
+				OC_Response::setETagHeader($calendar['ctag']);
+				$events = OC_Calendar_Object::allInPeriod($calendar_id, $start, $end);
+			} else {
+				OC_Hook::emit('OC_Calendar', 'getEvents', array('calendar_id' => $calendar_id, 'events' => &$events));
+			}
+		}
+		return $events;
+	}
+	
+	/*
+	 * @brief generates the output for an event which will be readable for our js
+	 * @param (mixed) $event - event object / array
+	 * @param (int) $start - unixtimestamp of start
+	 * @param (int) $end - unixtimestamp of end
+	 * @return (array) $output - readable output
+	 */
+	public static function generateEventOutput($event, $start, $end){
+		$output = array();
+		
+		if(isset($event['calendardata'])){
+			$object = OC_VObject::parse($event['calendardata']);
+			$vevent = $object->VEVENT;
+		}else{
+			$vevent = $event['vevent'];
+		}
+		
+		$last_modified = @$vevent->__get('LAST-MODIFIED');
+		$lastmodified = ($last_modified)?$last_modified->getDateTime()->format('U'):0;
+		
+		$output = array('id'=>(int)$event['id'],
+						'title' => htmlspecialchars(($event['summary']!=NULL || $event['summary'] != '')?$event['summary']: self::$l10n->t('unnamed')),
+						'description' => isset($vevent->DESCRIPTION)?htmlspecialchars($vevent->DESCRIPTION->value):'',
+						'lastmodified'=>$lastmodified);
+		
+		$dtstart = $vevent->DTSTART;
+		$start_dt = $dtstart->getDateTime();
+		$dtend = OC_Calendar_Object::getDTEndFromVEvent($vevent);
+		$end_dt = $dtend->getDateTime();
+		
+		if ($dtstart->getDateType() == Sabre_VObject_Element_DateTime::DATE){
+			$output['allDay'] = true;
+		}else{
+			$output['allDay'] = false;
+			$start_dt->setTimezone(new DateTimeZone(self::$tz));
+			$end_dt->setTimezone(new DateTimeZone(self::$tz));
+		}
+		
+		if($event['repeating'] == 1){
+			$duration = (double) $end_dt->format('U') - (double) $start_dt->format('U');
+			$r = new When();
+			$r->recur($start_dt)->rrule((string) $vevent->RRULE);
+			/*$r = new iCal_Repeat_Generator(array('RECUR'  => $start_dt,
+			 *									   'RRULE'  => (string)$vevent->RRULE
+			 *									   'RDATE'  => (string)$vevent->RDATE						
+			 *									   'EXRULE' => (string)$vevent->EXRULE
+			 *									   'EXDATE' => (string)$vevent->EXDATE));*/
+			while($result = $r->next()){
+				if($result < $start){
+					continue;
+				}
+				if($result > $end){
+					break;
+				}
+				if($output['allDay'] == true){
+					$output['start'] = $result->format('Y-m-d');
+					$output['end'] = date('Y-m-d', $result->format('U') + --$duration);
+				}else{
+					$output['start'] = $result->format('Y-m-d H:i:s');
+					$output['end'] = date('Y-m-d H:i:s', $result->format('U') + $duration);
+				}
+			}
+		}else{
+			if($output['allDay'] == true){
+				$output['start'] = $start_dt->format('Y-m-d');
+				$end_dt->modify('-1 sec');
+				$output['end'] = $end_dt->format('Y-m-d');
+			}else{
+				$output['start'] = $start_dt->format('Y-m-d H:i:s');
+				$output['end'] = $end_dt->format('Y-m-d H:i:s');
+			}
+		}
+		return $output;
+	}
 }