/**
* @Route("/poll", name="ajax_poll")
*/
public function poll()
{
// Make use "online"
$online = Online::findUser($this->app->user()->id);
// If user does not online, "connect" user to chat.
// First check if online entity exist, if not when create new one.
// If entity exist but in timeout, when send "user join" again.
if (empty($online)) {
$online = new Online();
$online->user = $this->app->user();
$this->app->server()->send($userJoin = Protocol::userJoin($this->app->user()));
} else {
if ($online->isTimeout()) {
$this->app->server()->send($userJoin = Protocol::userJoin($this->app->user()));
}
}
$online->updateTime();
$online->save();
// Time out other users.
foreach (Online::offlineUsers() as $online) {
$this->app->server()->send(Protocol::userLeave($online->user));
$online->remove();
}
Online::flush();
// Message queue workflow.
// On first load user send last=0, and we need to send correct last queue id for him.
// If its first load poll only 1 entity - grab id of it and clear queue (message duplicate issue).
// Otherwise pull 10 entities, clear queue only if where are no messages pulled.
$last = (int) $this->request->get('last', 0);
$firstLoad = $last === 0;
$queue = Queue::poll($last, $this->app->user()->id, $firstLoad ? 1 : 10);
if (!empty($queue)) {
$last = $queue[0]->id;
if ($firstLoad) {
$queue = array();
}
} else {
// Clear queue in one on hundred times.
if (1 === rand(1, 100)) {
Queue::deleteOld($last);
}
}
// Sort in correct direction and convert to json format.
$queue = array_reverse(array_map(function ($q) {
return $q->data;
}, $queue));
if (isset($userJoin)) {
$queue = array($userJoin);
}
return $this->app->json(array('last' => (int) $last, 'queue' => $queue));
}
/**
* @param ConnectionInterface $conn
*/
public function onClose(ConnectionInterface $conn)
{
if (null !== $conn->user) {
$this->sendExclude($conn->user->id, Protocol::userLeave($conn->user));
$this->detach($conn);
}
}
public function kill($userId)
{
$this->send(Protocol::userLeave(User::find($userId)));
}
