Remove 2FA backup codes on user deletion

Signed-off-by: Joas Schilling <coding@schilljs.com>

apps/twofactor_backupcodes/appinfo/app.php

@@ -1,7 +1,8 @@
 <?php
-
 /**
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
+ * @copyright Copyright (c) 2017 Joas Schilling <coding@schilljs.com>
+ *
+ * @author Joas Schilling <coding@schilljs.com>
  *
  * @license GNU AGPL version 3 or any later version
  *
@@ -20,6 +21,5 @@
  *
  */
 
-// @codeCoverageIgnoreStart
+$app = new \OCA\TwoFactorBackupCodes\AppInfo\Application();
-OC_App::registerPersonal('twofactor_backupcodes', 'settings/personal');
+$app->register();
-// @codeCoverageIgnoreEnd

apps/twofactor_backupcodes/lib/AppInfo/Application.php

@@ -0,0 +1,62 @@
+<?php
+/**
+ * @copyright Copyright (c) 2017 Joas Schilling <coding@schilljs.com>
+ *
+ * @author Joas Schilling <coding@schilljs.com>
+ *
+ * @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 <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace OCA\TwoFactorBackupCodes\AppInfo;
+
+use OCA\TwoFactorBackupCodes\Db\BackupCodeMapper;
+use OCP\AppFramework\App;
+use OCP\Util;
+
+class Application extends App {
+	public function __construct () {
+		parent::__construct('twofactor_backupcodes');
+	}
+
+	/**
+	 * Register the different app parts
+	 */
+	public function register() {
+		$this->registerHooksAndEvents();
+		$this->registerPersonalPage();
+	}
+
+	/**
+	 * Register the hooks and events
+	 */
+	public function registerHooksAndEvents() {
+		Util::connectHook('OC_User', 'post_deleteUser', $this, 'deleteUser');
+	}
+
+	public function deleteUser($params) {
+		/** @var BackupCodeMapper $mapper */
+		$mapper = $this->getContainer()->query(BackupCodeMapper::class);
+		$mapper->deleteCodesByUserId($params['uid']);
+	}
+
+	/**
+	 * Register personal settings for notifications and emails
+	 */
+	public function registerPersonalPage() {
+		\OCP\App::registerPersonal($this->getContainer()->getAppName(), 'settings/personal');
+	}
+}

apps/twofactor_backupcodes/lib/Db/BackupCodeMapper.php

@@ -52,12 +52,22 @@ class BackupCodeMapper extends Mapper {
 		}, $rows);
 	}
 
+	/**
+	 * @param IUser $user
+	 */
 	public function deleteCodes(IUser $user) {
+		$this->deleteCodesByUserId($user->getUID());
+	}
+
+	/**
+	 * @param string $uid
+	 */
+	public function deleteCodesByUserId($uid) {
 		/* @var IQueryBuilder $qb */
 		$qb = $this->db->getQueryBuilder();
 
 		$qb->delete('twofactor_backup_codes')
-			->where($qb->expr()->eq('user_id', $qb->createNamedParameter($user->getUID())));
+			->where($qb->expr()->eq('user_id', $qb->createNamedParameter($uid)));
 		$qb->execute();
 	}