Move Api\Mastodon\Instance\Extended to ExtendedDescription

- Add reference to Mastodon documentation

src/Module/Api/Mastodon/Instance/ExtendedDescription.php

@@ -0,0 +1,59 @@
+<?php
+/**
+ * @copyright Copyright (C) 2010-2024, the Friendica project
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace Friendica\Module\Api\Mastodon\Instance;
+
+use DateTime;
+use Friendica\App;
+use Friendica\Core\Config\Capability\IManageConfigValues;
+use Friendica\Core\L10n;
+use Friendica\Model\User;
+use Friendica\Module\Api\ApiResponse;
+use Friendica\Module\BaseApi;
+use Friendica\Network\HTTPException;
+use Friendica\Object\Api\Mastodon;
+use Friendica\Util\Profiler;
+use Psr\Log\LoggerInterface;
+
+/**
+ * @see https://docs.joinmastodon.org/methods/instance/#extended_description
+ */
+class ExtendedDescription extends BaseApi
+{
+	private IManageConfigValues $config;
+
+	public function __construct(\Friendica\Factory\Api\Mastodon\Error $errorFactory, App $app, L10n $l10n, App\BaseURL $baseUrl, App\Arguments $args, LoggerInterface $logger, Profiler $profiler, ApiResponse $response, IManageConfigValues $config, array $server, array $parameters = [])
+	{
+		parent::__construct($errorFactory, $app, $l10n, $baseUrl, $args, $logger, $profiler, $response, $server, $parameters);
+
+		$this->config = $config;
+	}
+
+	/**
+	 * @throws HTTPException\InternalServerErrorException
+	 */
+	protected function rawContent(array $request = [])
+	{
+		$account = User::getSystemAccount();
+
+		$this->jsonExit(new Mastodon\ExtendedDescription(new DateTime($account['updated']), $this->config->get('config', 'info')));
+	}
+}