Add /revoke route as per RFC 7009

src/Revoke.php

@@ -0,0 +1,69 @@
+<?php
+
+namespace Chadicus\Slim\OAuth2\Routes;
+
+use Chadicus\Slim\OAuth2\Http\MessageBridge;
+use OAuth2;
+use Slim\Slim;
+
+/**
+ * The revoke class.
+ * 
+ */
+class Revoke
+{
+    const ROUTE = '/revoke';
+
+    /**
+     * The slim framework application instance.
+     *
+     * @var Slim
+     */
+    private $slim;
+
+    /**
+     * The oauth2 server instance.
+     *
+     * @var OAuth2\Server
+     */
+    private $server;
+
+    /**
+     * Construct a new instance of Authorize.
+     *
+     * @param Slim          $slim   The slim framework application instance.
+     * @param OAuth2\Server $server The oauth2 server imstance.
+     */
+    public function __construct(Slim $slim, OAuth2\Server $server)
+    {
+        $this->slim = $slim;
+        $this->server = $server;
+    }
+
+    /**
+     * Call this class as a function.
+     *
+     * @return void
+     */
+    public function __invoke()
+    {
+        $request = MessageBridge::newOAuth2Request($this->slim->request());
+        MessageBridge::mapResponse(
+            $this->server->handleRevokeRequest($request),
+            $this->slim->response()
+        );
+    }
+
+    /**
+     * Register this route with the given Slim application and OAuth2 server
+     *
+     * @param Slim          $slim   The slim framework application instance.
+     * @param OAuth2\Server $server The oauth2 server instance.
+     *
+     * @return void
+     */
+    public static function register(Slim $slim, OAuth2\Server $server)
+    {
+        $slim->post(self::ROUTE, new static($slim, $server))->name('revoke');
+    }
+}