/**
* Mark alerts as read and returns number of marked alerts
*
* @param $alerts
* @return int
*/
private function mark($alerts)
{
$markId = [];
foreach ($alerts as $alert) {
if (!$alert->read_at) {
$markId[] = $alert->id;
}
}
if ($markId) {
$this->alert->markAsRead($markId);
}
return count($markId);
}
