Generate backups code notification if not enable but 2fa is

Generate a notification to generate backup codes if you enable an other
2FA provider but backup codes are not yet generated.

* Add event listner
* Insert background job
* Background job tests and emits notification every 2 weeks
* If the backup codes are generated the next run will remove the job

Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>

1 files changed, 64 insertions, 0 deletions

diff --git a/apps/twofactor_backupcodes/lib/Notifications/Notifier.php b/apps/twofactor_backupcodes/lib/Notifications/Notifier.php
new file mode 100644
index 00000000000..3d5fedd93ea
--- /dev/null
+++ b/apps/twofactor_backupcodes/lib/Notifications/Notifier.php
@@ -0,0 +1,64 @@
+<?php
+declare(strict_types=1);
+/**
+ * @copyright Copyright (c) 2018, Roeland Jago Douma <roeland@famdouma.nl>
+ *
+ * @author Roeland Jago Douma <roeland@famdouma.nl>
+ *
+ * @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\Notifications;
+
+use OCP\L10N\IFactory;
+use OCP\Notification\INotification;
+use OCP\Notification\INotifier;
+
+class Notifier implements INotifier {
+
+	/** @var IFactory */
+	private $factory;
+
+	public function __construct(IFactory $factory) {
+		$this->factory = $factory;
+	}
+
+	public function prepare(INotification $notification, $languageCode) {
+		if ($notification->getApp() !== 'twofactor_backupcodes') {
+			// Not my app => throw
+			throw new \InvalidArgumentException();
+		}
+
+		// Read the language from the notification
+		$l = $this->factory->get('twofactor_backupcodes', $languageCode);
+
+		switch ($notification->getSubject()) {
+			case 'create_backupcodes':
+				$notification->setParsedSubject(
+					$l->t('Generate backup codes')
+				)->setParsedMessage(
+					$l->t('You have enabled two-factor authentication but have not yet generated backup codes. Be sure to do this in case you lose access to your second factor.')
+				);
+				return $notification;
+
+			default:
+				// Unknown subject => Unknown notification => throw
+				throw new \InvalidArgumentException();
+		}
+	}
+
+}