private function destroyTable(Table $table)
 {
     if ($table instanceof WebSocketObservableTable) {
         $this->webSocketManager->closeTable($table);
     }
     $this->tableManager->closeTable($table);
 }
 public function onMessage(WebSocketConnection $connection, $msg)
 {
     $message = \Blackjack\json_parse($msg);
     if (!isset($message['alias'])) {
         return;
     }
     $alias = $message['alias'];
     if ($alias === 'subscribe') {
         if ($this->isSubscribed($connection) || !isset($message['table_id'])) {
             $connection->close();
             return;
         }
         $tableId = $message['table_id'];
         /** @var WebSocketObservableTable $table */
         $table = $this->tableManager->getTableById($tableId);
         if ($table === null) {
             return;
         }
         $this->subscribe($connection, $table);
         return;
     }
     if ($alias === 'unsubscribe') {
         if (!$this->isSubscribed($connection)) {
             return;
         }
         $this->unsubscribe($connection);
         return;
     }
     if ($alias === 'query') {
         $connection->send(json_encode(['alias' => 'tables', 'data' => ['tables' => $this->tableManager->getTables()->map(function (Table $table) {
             return ['id' => $table->getId(), 'players' => $table->getSeats()->filter(function (TableSeat $seat) {
                 return $seat->getPlayer() !== null;
             })->map(function (TableSeat $seat) {
                 return ['player' => $seat->getPlayer()->getName()];
             })->elements()];
         })->elements()]]));
         return;
     }
 }