First commit of AuthCode grant and entity

src/League/OAuth2/Server/Entity/AbstractToken.php

@@ -176,7 +176,7 @@ abstract class AbstractToken
      * @param  array $unformated Array of \League\OAuth2\Server\Entity\Scope
      * @return array
      */
-    private function formatScopes($unformated = [])
+    protected function formatScopes($unformated = [])
     {
         $scopes = [];
         foreach ($unformated as $scope) {

src/League/OAuth2/Server/Entity/AuthCode.php

@@ -0,0 +1,78 @@
+<?php
+/**
+ * OAuth 2.0 Auth code entity
+ *
+ * @package     league/oauth2-server
+ * @author      Alex Bilbie <hello@alexbilbie.com>
+ * @copyright   Copyright (c) Alex Bilbie
+ * @license     http://mit-license.org/
+ * @link        http://github.com/php-loep/oauth2-server
+ */
+
+namespace League\OAuth2\Server\Entity;
+
+use League\OAuth2\Server\Storage\SessionStorageInterface;
+use League\OAuth2\Server\Storage\AccessTokenInterface;
+use League\OAuth2\Server\Util\SecureKey;
+use League\OAuth2\Server\Exception\InvalidAccessTokenException;
+use Symfony\Component\HttpFoundation\ParameterBag;
+
+/**
+ * Access token entity class
+ */
+class AuthCode extends AbstractToken
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function getSession()
+    {
+        if ($this->session instanceof Session) {
+            return $this->session;
+        }
+
+        $this->session = $this->server->getStorage('session')->getByAuthCode($this->token);
+        return $this->session;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getScopes()
+    {
+        if ($this->scopes === null) {
+            $this->scopes = $this->formatScopes(
+                $this->server->getStorage('auth_code')->getScopes($this->getToken())
+            );
+        }
+
+        return $this->scopes;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function save()
+    {
+        $this->server->getStorage('auth_code')->create(
+            $this->getToken(),
+            $this->getExpireTime(),
+            $this->getSession()->getId()
+        );
+
+        // Associate the scope with the token
+        foreach ($this->getScopes() as $scope) {
+            $this->server->getStorage('auth_code')->associateScope($this->getToken(), $scope->getId());
+        }
+
+        return $this;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function expire()
+    {
+        $this->server->getStorage('auth_code')->delete($this->getToken());
+    }
+}