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diff --git a/actions/apigroupshow.php b/actions/apigroupshow.php
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+<?php
+/**
+ * StatusNet, the distributed open-source microblogging tool
+ *
+ * Show information about a group
+ *
+ * PHP version 5
+ *
+ * LICENCE: 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 <http://www.gnu.org/licenses/>.
+ *
+ * @category API
+ * @package StatusNet
+ * @author Craig Andrews <candrews@integralblue.com>
+ * @author Evan Prodromou <evan@status.net>
+ * @author Jeffery To <jeffery.to@gmail.com>
+ * @author Zach Copley <zach@status.net>
+ * @copyright 2009 StatusNet, Inc.
+ * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
+ * @link http://status.net/
+ */
+
+if (!defined('STATUSNET')) {
+ exit(1);
+}
+
+require_once INSTALLDIR . '/lib/api.php';
+
+/**
+ * Outputs detailed information about the group specified by ID
+ *
+ * @category API
+ * @package StatusNet
+ * @author Craig Andrews <candrews@integralblue.com>
+ * @author Evan Prodromou <evan@status.net>
+ * @author Jeffery To <jeffery.to@gmail.com>
+ * @author Zach Copley <zach@status.net>
+ * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
+ * @link http://status.net/
+ */
+
+class ApiGroupShowAction extends ApiAction
+{
+ var $group = null;
+
+ /**
+ * Take arguments for running
+ *
+ * @param array $args $_REQUEST args
+ *
+ * @return boolean success flag
+ *
+ */
+
+ function prepare($args)
+ {
+ parent::prepare($args);
+
+ $this->group = $this->getTargetGroup($this->arg('id'));
+
+ return true;
+ }
+
+ /**
+ * Handle the request
+ *
+ * Check the format and show the user info
+ *
+ * @param array $args $_REQUEST data (unused)
+ *
+ * @return void
+ */
+
+ function handle($args)
+ {
+ parent::handle($args);
+
+ if (empty($this->group)) {
+ $this->clientError(
+ 'Group not found!',
+ 404,
+ $this->format
+ );
+ return;
+ }
+
+ switch($this->format) {
+ case 'xml':
+ $this->show_single_xml_group($this->group);
+ break;
+ case 'json':
+ $this->showSingleJsonGroup($this->group);
+ break;
+ default:
+ $this->clientError(_('API method not found!'), 404, $this->format);
+ break;
+ }
+
+ }
+
+ /**
+ * When was this group last modified?
+ *
+ * @return string datestamp of the latest notice in the stream
+ */
+
+ function lastModified()
+ {
+ if (!empty($this->group)) {
+ return strtotime($this->group->modified);
+ }
+
+ return null;
+ }
+
+ /**
+ * An entity tag for this group
+ *
+ * Returns an Etag based on the action name, language, and
+ * timestamps of the notice
+ *
+ * @return string etag
+ */
+
+ function etag()
+ {
+ if (!empty($this->group)) {
+
+ return '"' . implode(
+ ':',
+ array($this->arg('action'),
+ common_language(),
+ $this->group->id,
+ strtotime($this->group->modified))
+ )
+ . '"';
+ }
+
+ return null;
+ }
+
+}