<?php

namespace Infrastructure\Http;

use Ratchet\ConnectionInterface;
use Ratchet\MessageComponentInterface;

class WebSocketController extends Controller implements MessageComponentInterface
{
    private $connections = [];

    /**
     * When a new connection is opened it will be passed to this method
     * @param  ConnectionInterface $conn The socket/connection that just connected to your application
     * @throws \Exception
     */
    function onOpen(ConnectionInterface $conn)
    {
        $this->connections[$conn->resourceId] = compact('conn') + ['user_id' => null];
    }

    /**
     * This is called before or after a socket is closed (depends on how it's closed).  SendMessage to $conn will not result in an error if it has already been closed.
     * @param  ConnectionInterface $conn The socket/connection that is closing/closed
     * @throws \Exception
     */
    function onClose(ConnectionInterface $conn)
    {
        $disconnectedId = $conn->resourceId;
        unset($this->connections[$disconnectedId]);
    }

    /**
     * If there is an error with one of the sockets, or somewhere in the application where an Exception is thrown,
     * the Exception is sent back down the stack, handled by the Server and bubbled back up the application through this method
     * @param  ConnectionInterface $conn
     * @param  \Exception $e
     * @throws \Exception
     */
    function onError(ConnectionInterface $conn, \Exception $e)
    {
        unset($this->connections[$conn->resourceId]);
        $conn->close();
    }

    /**
     * Triggered when a client sends data through the socket
     * @param  \Ratchet\ConnectionInterface $conn The socket/connection that sent the message to your application
     * @param  string $msg The message received
     * @throws \Exception
     */
    function onMessage(ConnectionInterface $conn, $msg)
    {

    }
}