function getGoogleCalendarFeeds($startDate, $endDate, $projection = null)
{
GCalendarUtil::ensureSPIsLoaded();
$results = $this->getDBCalendars();
if (empty($results)) {
return null;
}
$params = $this->getState('parameters.menu');
$useCache = false;
$calendarids = array();
if ($params != null) {
$useCache = $params->get('cache', 'no') == 'yes';
$tmp = $params->get('calendarids');
if (is_array($tmp)) {
$calendarids = $tmp;
} else {
if (!empty($tmp)) {
$calendarids[] = $tmp;
}
}
}
$calendars = array();
foreach ($results as $result) {
if (empty($result->calendar_id)) {
continue;
}
if (!empty($calendarids) && !in_array($result->id, $calendarids)) {
continue;
}
$feed = new SimplePie_GCalendar();
$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);
$feed->enable_cache($useCache);
if ($useCache) {
// 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);
$cache_time = intval($params->get('cache_time', 3600));
$feed->set_cache_duration($cache_time);
}
}
$feed->set_projection($projection);
$feed->set_start_date($startDate);
$feed->set_end_date($endDate);
$feed->set_max_events(100);
$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();
$feed->handle_content_type();
$calendars[] = $feed;
}
return $calendars;
}
