Add a update step that copies all the backup codes

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

apps/twofactor_backupcodes/appinfo/info.xml

@@ -5,7 +5,7 @@
 	<description>A two-factor auth backup codes provider</description>
 	<licence>agpl</licence>
 	<author>Christoph Wurst</author>
-	<version>1.1.0</version>
+	<version>1.1.1</version>
 	<namespace>TwoFactorBackupCodes</namespace>
 	<category>other</category>
 
@@ -29,4 +29,10 @@
 			<provider>OCA\TwoFactorBackupCodes\Activity\Provider</provider>
 		</providers>
 	</activity>
+
+	<repair-steps>
+		<post-migration>
+			<step>OCA\TwoFactorBackupCodes\Migration\CopyEntriesFromOldTable</step>
+		</post-migration>
+	</repair-steps>
 </info>

apps/twofactor_backupcodes/lib/Migration/CopyEntriesFromOldTable.php

@@ -0,0 +1,108 @@
+<?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\Migration;
+
+use OCP\DB\QueryBuilder\IQueryBuilder;
+use OCP\IConfig;
+use OCP\IDBConnection;
+use OCP\Migration\IOutput;
+use OCP\Migration\IRepairStep;
+
+class CopyEntriesFromOldTable implements IRepairStep {
+
+	/** @var IDBConnection */
+	protected $connection;
+
+	/** @var IConfig */
+	protected $config;
+
+	/**
+	 * @param IDBConnection $connection
+	 * @param IConfig $config
+	 */
+	public function __construct(IDBConnection $connection, IConfig $config) {
+		$this->connection = $connection;
+		$this->config = $config;
+	}
+
+	/**
+	 * Returns the step's name
+	 *
+	 * @return string
+	 * @since 9.1.0
+	 */
+	public function getName() {
+		return 'Copy twofactor backup codes from legacy table';
+	}
+
+	/**
+	 * Run repair step.
+	 * Must throw exception on error.
+	 *
+	 * @since 9.1.0
+	 * @param IOutput $output
+	 * @throws \Exception in case of failure
+	 */
+	public function run(IOutput $output) {
+		$version = $this->config->getAppValue('twofactor_backupcodes', 'installed_version', '0.0.0');
+		if (version_compare($version, '1.1.1', '>=')) {
+			return;
+		}
+
+		if (!$this->connection->tableExists('twofactor_backup_codes')) {
+			// Legacy table does not exist
+			return;
+		}
+
+		$insert = $this->connection->getQueryBuilder();
+		$insert->insert('twofactor_backupcodes')
+			->values([
+				// Inserting with id might fail: 'id' => $insert->createParameter('id'),
+				'user_id' => $insert->createParameter('user_id'),
+				'code' => $insert->createParameter('code'),
+				'used' => $insert->createParameter('used'),
+			]);
+
+		$query = $this->connection->getQueryBuilder();
+		$query->select('*')
+			->from('twofactor_backup_codes')
+			->orderBy('id', 'ASC');
+		$result = $query->execute();
+
+		$output->startProgress();
+		while ($row = $result->fetch()) {
+			$output->advance();
+
+			$insert
+				// Inserting with id might fail: ->setParameter('id', $row['id'], IQueryBuilder::PARAM_INT)
+				->setParameter('user_id', $row['user_id'], IQueryBuilder::PARAM_STR)
+				->setParameter('code', $row['code'], IQueryBuilder::PARAM_STR)
+				->setParameter('used', $row['used'], IQueryBuilder::PARAM_INT)
+				->execute();
+		}
+		$output->finishProgress();
+
+		$this->connection->dropTable('twofactor_backup_codes');
+	}
+}