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<?php
namespace Ratchet;
use React\EventLoop\LoopInterface;
use React\EventLoop\Factory as LoopFactory;
use React\Socket\Server as Reactor;
use React\Socket\SecureServer as SecureReactor;
use Ratchet\Http\HttpServerInterface;
use Ratchet\Http\OriginCheck;
use Ratchet\Wamp\WampServerInterface;
use Ratchet\Server\IoServer;
use Ratchet\Server\FlashPolicy;
use Ratchet\Http\HttpServer;
use Ratchet\Http\Router;
use Ratchet\WebSocket\WsServer;
use Ratchet\Wamp\WampServer;
use Symfony\Component\Routing\RouteCollection;
use Symfony\Component\Routing\Route;
use Symfony\Component\Routing\RequestContext;
use Symfony\Component\Routing\Matcher\UrlMatcher;

/**
 * An opinionated facade class to quickly and easily create a WebSocket server.
 * A few configuration assumptions are made and some best-practice security conventions are applied by default.
 */
class App {
    /**
     * @var \Symfony\Component\Routing\RouteCollection
     */
    public $routes;

/**
     * @var \Ratchet\Server\IoServer
     */
    public $flashServer;

/**
     * @var \Ratchet\Server\IoServer
     */
    protected $_server;

/**
     * The Host passed in construct used for same origin policy
     * @var string
     */
    protected $httpHost;

/***
     * The port the socket is listening
     * @var int
     */
    protected $port;

/**
     * @var int
     */
    protected $_routeCounter = 0;

/**
     * @param string        $httpHost   HTTP hostname clients intend to connect to. MUST match JS `new WebSocket('ws://$httpHost');`
     * @param int           $port       Port to listen on. If 80, assuming production, Flash on 843 otherwise expecting Flash to be proxied through 8843
     * @param string        $address    IP address to bind to. Default is localhost/proxy only. '0.0.0.0' for any machine.
     * @param LoopInterface $loop       Specific React\EventLoop to bind the application to. null will create one for you.
     */
    public function __construct($httpHost = 'localhost', $port = 8080, $address = '127.0.0.1', LoopInterface $loop = null) {
        if (extension_loaded('xdebug')) {
            trigger_error('XDebug extension detected. Remember to disable this if performance testing or going live!', E_USER_WARNING);
        }

if (null === $loop) {
            $loop = LoopFactory::create();
        }

$this->httpHost = $httpHost;
        $this->port = $port;

$socket = new Reactor($address . ':' . $port, $loop);

$this->routes  = new RouteCollection;
        $this->_server = new IoServer(new HttpServer(new Router(new UrlMatcher($this->routes, new RequestContext))), $socket, $loop);

$policy = new FlashPolicy;
        $policy->addAllowedAccess($httpHost, 80);
        $policy->addAllowedAccess($httpHost, $port);

if (80 == $port) {
            $flashUri = '0.0.0.0:843';
        } else {
            $flashUri = 8843;
        }
        $flashSock = new Reactor($flashUri, $loop);
        $this->flashServer = new IoServer($policy, $flashSock);
    }

/**
     * Add an endpoint/application to the server
     * @param string             $path The URI the client will connect to
     * @param ComponentInterface $controller Your application to server for the route. If not specified, assumed to be for a WebSocket
     * @param array              $allowedOrigins An array of hosts allowed to connect (same host by default), ['*'] for any
     * @param string             $httpHost Override the $httpHost variable provided in the __construct
     * @return ComponentInterface|WsServer
     */
    public function route($path, ComponentInterface $controller, array $allowedOrigins = array(), $httpHost = null) {
        if ($controller instanceof HttpServerInterface || $controller instanceof WsServer) {
            $decorated = $controller;
        } elseif ($controller instanceof WampServerInterface) {
            $decorated = new WsServer(new WampServer($controller));
            $decorated->enableKeepAlive($this->_server->loop);
        } elseif ($controller instanceof MessageComponentInterface) {
            $decorated = new WsServer($controller);
            $decorated->enableKeepAlive($this->_server->loop);
        } else {
            $decorated = $controller;
        }

if ($httpHost === null) {
            $httpHost = $this->httpHost;
        }

$allowedOrigins = array_values($allowedOrigins);
        if (0 === count($allowedOrigins)) {
            $allowedOrigins[] = $httpHost;
        }
        if ('*' !== $allowedOrigins[0]) {
            $decorated = new OriginCheck($decorated, $allowedOrigins);
        }

//allow origins in flash policy server
        if(empty($this->flashServer) === false) {
            foreach($allowedOrigins as $allowedOrgin) {
                $this->flashServer->app->addAllowedAccess($allowedOrgin, $this->port);
            }
        }

$this->routes->add('rr-' . ++$this->_routeCounter, new Route($path, array('_controller' => $decorated), array('Origin' => $this->httpHost), array(), $httpHost, array(), array('GET')));

return $decorated;
    }

/**
     * Run the server by entering the event loop
     */
    public function run() {
        $this->_server->run();
    }
}