/**
* Returns a Simplepie feed for the calendar according
* to the parameter gcid.
* If there is a menu available for this calendar the
* cache is used and configured from the menu parameters.
*/
function getGoogleCalendarFeeds()
{
GCalendarUtil::ensureSPIsLoaded();
$startDate = JRequest::getVar('start', null);
$endDate = JRequest::getVar('end', null);
$browserTz = JRequest::getInt('browserTimezone', null);
if (!empty($browserTz)) {
$browserTz = $browserTz * 60;
} else {
$browserTz = 0;
}
$serverOffset = date('Z', $startDate);
$startDate = $startDate - $browserTz - $serverOffset - GCalendarModelJSONFeed::getGCalendarTZOffset($startDate);
$endDate = $endDate - $browserTz - $serverOffset - GCalendarModelJSONFeed::getGCalendarTZOffset($endDate);
$calendarids = '';
if (JRequest::getVar('gcids', null) != null) {
if (is_array(JRequest::getVar('gcids', null))) {
$calendarids = JRequest::getVar('gcids', null);
} else {
$calendarids = explode(',', JRequest::getVar('gcids', null));
}
} else {
$calendarids = JRequest::getVar('gcid', null);
}
$results = GCalendarDBUtil::getCalendars($calendarids);
if (empty($results)) {
return null;
}
$calendars = array();
foreach ($results as $result) {
if (empty($result->calendar_id)) {
continue;
}
$feed = new SimplePie_GCalendar();
if (JRequest::getCmd('layout', null) == 'module') {
$cacheTime = JRequest::getInt('ctime', -1);
if ($cacheTime > -1) {
// check if cache directory exists and is writeable
$cacheDir = JPATH_BASE . DS . 'cache' . DS . 'mod_gcalendar';
$cache_exists = true;
JFolder::create($cacheDir, 0755);
if (!is_writable($cacheDir)) {
JError::raiseWarning(500, "Created cache at " . $cacheDir . " is not writable, disabling cache.");
$cache_exists = false;
} else {
$cache_exists = true;
}
$feed->enable_cache($cache_exists);
if ($cache_exists) {
$feed->set_cache_location($cacheDir);
$feed->set_cache_duration($cacheTime);
}
} else {
$feed->enable_cache(false);
$feed->set_cache_duration(-1);
}
} else {
$linkID = GCalendarUtil::getItemId($result->id);
$menus =& JSite::getMenu();
$params = $menus->getParams($linkID);
$conf =& JFactory::getConfig();
if ($params != null && ($params->get('gccache', 0) == 2 || $params->get('gccache', 0) == 1 && $conf->getValue('config.caching'))) {
$cacheTime = $params->get('gccache_time', $conf->getValue('config.cachetime') * 60);
// check if cache directory exists and is writeable
$cacheDir = JPATH_BASE . DS . 'cache' . DS . 'com_gcalendar';
JFolder::create($cacheDir, 0755);
if (!is_writable($cacheDir)) {
JError::raiseWarning(500, "Created cache at " . $cacheDir . " is not writable, disabling cache.");
$cache_exists = false;
} else {
$cache_exists = true;
}
//check and set caching
$feed->enable_cache($cache_exists);
if ($cache_exists) {
$feed->set_cache_location($cacheDir);
$feed->set_cache_duration($cacheTime);
}
} else {
$feed->enable_cache(false);
$feed->set_cache_duration(-1);
}
}
$feed->set_show_past_events(FALSE);
$feed->set_sort_ascending(TRUE);
$feed->set_orderby_by_start_date(TRUE);
$feed->set_expand_single_events(TRUE);
$feed->enable_order_by_date(FALSE);
$feed->set_start_date($startDate);
$feed->set_end_date($endDate);
$feed->set_max_events(1000);
$feed->put('gcid', $result->id);
$feed->put('gccolor', $result->color);
$feed->put('gcname', $result->name);
$feed->set_cal_language(GCalendarUtil::getFrLanguage());
$feed->set_timezone(GCalendarUtil::getComponentParameter('timezone'));
$url = SimplePie_GCalendar::create_feed_url($result->calendar_id, $result->magic_cookie);
$feed->set_feed_url($url);
$feed->init();
//echo $feed->feed_url;
if ($feed->error()) {
JError::raiseWarning(500, 'Simplepie detected an error for the calendar ' . $result->calendar_id . '. Please run the <a href="administrator/components/com_gcalendar/libraries/sp-gcalendar/sp_compatibility_test.php">compatibility utility</a>.<br>The following Simplepie error occurred:<br>' . $feed->error());
}
$feed->handle_content_type();
$calendars[] = $feed;
}
return $calendars;
}
