Migrate old accessibility config

Signed-off-by: John Molakvoæ <skjnldsv@protonmail.com>

apps/theming/appinfo/info.xml

@@ -5,7 +5,7 @@
 	<name>Theming</name>
 	<summary>Adjust the Nextcloud theme</summary>
 	<description>Adjust the Nextcloud theme</description>
-	<version>1.16.0</version>
+	<version>2.0.0</version>
 	<licence>agpl</licence>
 	<author>Nextcloud</author>
 	<namespace>Theming</namespace>
@@ -28,6 +28,12 @@
 		<personal-section>OCA\Theming\Settings\PersonalSection</personal-section>
 	</settings>
 
+	<repair-steps>
+		<pre-migration>
+			<step>OCA\Theming\Migration\MigrateUserConfig</step>
+		</pre-migration>
+	</repair-steps>
+
 	<commands>
 		<command>OCA\Theming\Command\UpdateConfig</command>
 	</commands>

apps/theming/lib/Migration/MigrateUserConfig.php

@@ -0,0 +1,123 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * @copyright Copyright (c) 2019 Janis Köhr <janiskoehr@icloud.com>
+ *
+ * @author Christoph Wurst <christoph@winzerhof-wurst.at>
+ * @author Janis Köhr <janis.koehr@novatec-gmbh.de>
+ *
+ * @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\Theming\Migration;
+
+use OCA\Theming\AppInfo\Application;
+use OCA\Theming\Service\ThemesService;
+use OCA\Theming\Themes\DarkHighContrastTheme;
+use OCA\Theming\Themes\DarkTheme;
+use OCA\Theming\Themes\DyslexiaFont;
+use OCA\Theming\Themes\HighContrastTheme;
+use OCP\IConfig;
+use OCP\IUser;
+use OCP\IUserManager;
+use OCP\Migration\IOutput;
+use OCP\Migration\IRepairStep;
+
+class MigrateUserConfig implements IRepairStep {
+
+	protected IUserManager $userManager;
+	protected IConfig $config;
+	protected ThemesService $themesService;
+	protected DarkTheme $darkTheme;
+	protected DarkHighContrastTheme $darkHighContrastTheme;
+	protected HighContrastTheme $highContrastTheme;
+	protected DyslexiaFont $dyslexiaFont;
+
+	/**
+	 * MigrateUserConfig constructor.
+	 */
+	public function __construct(IConfig $config,
+								IUserManager $userManager,
+								ThemesService $themesService,
+								DarkTheme $darkTheme,
+								DarkHighContrastTheme $darkHighContrastTheme,
+								HighContrastTheme $highContrastTheme,
+								DyslexiaFont $dyslexiaFont) {
+		$this->config = $config;
+		$this->userManager = $userManager;
+		$this->themesService = $themesService;
+
+		$this->darkTheme = $darkTheme;
+		$this->darkHighContrastTheme = $darkHighContrastTheme;
+		$this->highContrastTheme = $highContrastTheme;
+		$this->dyslexiaFont = $dyslexiaFont;
+	}
+
+	/**
+	 * Returns the step's name
+	 *
+	 * @return string
+	 * @since 25.0.0
+	 */
+	public function getName() {
+		return 'Migrate old user accessibility config';
+	}
+
+	/**
+	 * Run repair step.
+	 * Must throw exception on error.
+	 *
+	 * @param IOutput $output
+	 * @throws \Exception in case of failure
+	 * @since 25.0.0
+	 */
+	public function run(IOutput $output) {
+		$output->startProgress();
+		$this->userManager->callForSeenUsers(function (IUser $user) use ($output) {
+			$config = [];
+
+			$font = $this->config->getUserValue($user->getUID(), 'accessibility', 'font', false);
+			$highcontrast = $this->config->getUserValue($user->getUID(), 'accessibility', 'highcontrast', false);
+			$theme = $this->config->getUserValue($user->getUID(), 'accessibility', 'theme', false);
+
+			if ($highcontrast || $theme) {
+				if ($theme === 'dark' && $highcontrast === 'highcontrast') {
+					$config[] = $this->darkHighContrastTheme->getId();
+				} else if ($theme === 'dark') {
+					$config[] = $this->darkTheme->getId();
+				} else if ($highcontrast === 'highcontrast') {
+					$config[] = $this->highContrastTheme->getId();
+				}
+			}
+			
+			if ($font === 'fontdyslexic') {
+				$config[] = $this->dyslexiaFont->getId();
+			}
+
+			if (!empty($config)) {
+				$this->config->setUserValue($user->getUID(), Application::APP_ID, 'enabled-themes', json_encode(array_unique($config)));
+			}
+
+			$output->advance();
+		});
+
+		$this->config->deleteAppFromAllUsers('accessibility');
+
+		$output->finishProgress();
+	}
+}