--- /dev/null
+<?php
+declare (strict_types = 1);
+/**
+ * @author Janis Koehr <janiskoehr@icloud.com>
+ * @copyright Janis Koehr 2019
+ *
+ * @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\Accessibility\Migration;
+
+use OCP\IConfig;
+use OCP\IUser;
+use OCP\IUserManager;
+use OCP\Migration\IOutput;
+use OCP\Migration\IRepairStep;
+
+class RepairUserConfig implements IRepairStep {
+
+ /** @var string */
+ private const APP_NAME = 'accessibility';
+
+ /** @var IUserManager */
+ protected $userManager;
+
+ /** @var IConfig */
+ protected $config;
+
+ /**
+ * MigrateUserConfig constructor.
+ *
+ * @param IConfig $config
+ * @param IUserManager $userManager
+ */
+ public function __construct(IConfig $config,
+ IUserManager $userManager) {
+ $this->config = $config;
+ $this->userManager = $userManager;
+ }
+
+ /**
+ * Returns the step's name
+ *
+ * @return string
+ * @since 9.1.0
+ */
+ public function getName() {
+ return 'Migrate old user config';
+ }
+
+ /**
+ * Run repair step.
+ * Must throw exception on error.
+ *
+ * @param IOutput $output
+ * @throws \Exception in case of failure
+ * @since 9.1.0
+ */
+ public function run(IOutput $output) {
+ $output->startProgress();
+ $this->userManager->callForSeenUsers(function(IUser $user) use ($output) {
+ $theme = $this->config->getUserValue($user->getUID(), self::APP_NAME, 'theme', false);
+ if ($theme === 'themedark') {
+ $this->config->setUserValue($user->getUID(), self::APP_NAME, 'theme', 'dark');
+ }
+ if ($theme === 'themehighcontrast') {
+ $this->config->setUserValue($user->getUID(), self::APP_NAME, 'highcontrast', 'highcontrast');
+ $this->config->deleteUserValue($user->getUID(), self::APP_NAME, 'theme');
+ }
+ $output->advance();
+ });
+ $output->finishProgress();
+ }
+
+}