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<?php
namespace RESTAPI\Routes;
/**
* @author Till Glöggler <tgloeggl@uos.de>
* @author André Klaßen <klassen@elan-ev.de>
* @license GPL 2 or later
* @deprecated Since Stud.IP 5.0. Will be removed in Stud.IP 5.2.
*
* @condition user_id ^[a-f0-9]{1,32}$
*/
class Activity extends \RESTAPI\RouteMap
{
/**
* List activities for an user
*
* @get /user/:user_id/activitystream
*
* @param string $user_id the user to get the activities for
*
* @return Array the activities as array('collection' => array(...), 'pagination' => array())
*/
public function getActivities($user_id)
{
// only root can retrieve arbitrary streams
if (!$GLOBALS['perm']->have_perm('root') && $GLOBALS['user']->id != $user_id) {
$this->error(401);
}
// failsafe einbauen - falls es keine älteren Aktivitäten mehr im System gibt, Abbruch!
if ($oldest_activity = \Studip\Activity\Activity::getOldestActivity()) {
$max_age = array_pop($oldest_activity)->mkdate;
} else {
$max_age = time();
}
$contexts = [];
$user = \User::find($user_id);
// create system context
$system_context = new \Studip\Activity\SystemContext($user);
$contexts[] = $system_context;
$contexts[] = new \Studip\Activity\UserContext($user, $user);
$user->contacts->each(function($another_user) use (&$contexts, $user) {
$contexts[] = new \Studip\Activity\UserContext($another_user, $user);
});
if (!in_array($user->perms, ['admin','root'])) {
// create courses and institutes context
foreach (\Course::findMany($user->course_memberships->pluck('seminar_id')) as $course) {
$contexts[] = new \Studip\Activity\CourseContext($course, $user);
}
foreach (\Institute::findMany($user->institute_memberships->pluck('institut_id')) as $institute) {
$contexts[] = new \Studip\Activity\InstituteContext($institute, $user);
}
}
// add filters
$filter = new \Studip\Activity\Filter();
$start = \Request::int('start', strtotime('-1 days'));
$end = \Request::int('end', time());
$scrollfrom = \Request::int('scrollfrom', false);
$filtertype = \Request::get('filtertype', '');
$objectType = \Request::get('object_type', '');
$filter->setObjectType($objectType);
$objectId = \Request::get('object_id', '');
$filter->setObjectId($objectId);
$context = \Request::get('context_type', '');
$filter->setContext($context);
$contextId = \Request::get('context_id', '');
$filter->setContextId($contextId);
if (!empty($filtertype)) {
$filter->setType(json_decode($filtertype));
}
if ($scrollfrom) {
// shorten "watch-window" by one second to prevent duplication of activities
$scrollfrom -= 1;
if ($scrollfrom > $max_age){
$end = $scrollfrom;
$start = strtotime('-1 day', $end);
$data = [];
$backtrack = 1;
while (empty($data)) {
$filter->setStartDate($start);
$filter->setEndDate($end);
$data = $this->getStreamData($contexts, $filter);
if ($start < $max_age) {
break;
}
// move "watch-window" back one day at a time
$end = $start - 1;
$start = strtotime('-'. $backtrack . ' days', $start);
// enforce maximum "watch-window", currently 2 weeks
$backtrack = min (14, $backtrack + 1);
}
} else {
$data = false;
}
} else {
$filter->setStartDate($start);
$filter->setEndDate($end);
$data = $this->getStreamData($contexts, $filter);
}
// set etag for preventing resending the same stuff over and over again
$this->etag(md5(serialize($data)));
return $data;
}
/**
* private helper function to get stream data for given contexts and filter
*
* @param $contexts
* @param $filter
* @return array
*/
private function getStreamData($contexts, $filter)
{
$stream = new \Studip\Activity\Stream($contexts, $filter);
$data = $stream->toArray();
foreach ($data as $key => $act) {
$actor = [
'type' => $data[$key]['actor_type'],
'id' => $data[$key]['actor_id']
];
if ($data[$key]['actor_type'] == 'user') {
$a_user = \User::findFull($data[$key]['actor_id']);
$actor['details'] = User::getMiniUser($this, $a_user ?: new \User());
} elseif ($data[$key]['actor_type'] === 'anonymous') {
$actor['details'] = [
'name' => _('Anonym'),
];
}
unset($data[$key]['actor_type']);
unset($data[$key]['actor_id']);
$data[$key]['actor'] = $actor;
}
return $data;
}
}
|
