1 files changed, 184 insertions, 0 deletions
diff --git a/apps/files/lib/Service/ViewConfig.php b/apps/files/lib/Service/ViewConfig.php
new file mode 100644
index 00000000000..51d90ffdb4e
--- /dev/null
+++ b/apps/files/lib/Service/ViewConfig.php
@@ -0,0 +1,184 @@
+<?php
+/**
+ * @copyright Copyright (c) 2023 John Molakvoæ <skjnldsv@protonmail.com>
+ *
+ * @author John Molakvoæ <skjnldsv@protonmail.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\Files\Service;
+
+use OCA\Files\AppInfo\Application;
+use OCP\IConfig;
+use OCP\IUser;
+use OCP\IUserSession;
+
+class ViewConfig {
+	const CONFIG_KEY = 'files_views_configs';
+	const ALLOWED_CONFIGS = [
+		[
+			// The default sorting key for the files list view
+			'key' => 'sorting_mode',
+			// null by default as views can provide default sorting key
+			// and will fallback to it if user hasn't change it
+			'default' => null,
+		],
+		[
+			// The default sorting direction for the files list view
+			'key' => 'sorting_direction',
+			'default' => 'asc',
+			'allowed' => ['asc', 'desc'],
+		],
+		[
+			// If the navigation entry for this view is expanded or not
+			'key' => 'expanded',
+			'default' => true,
+			'allowed' => [true, false],
+		],
+	];
+
+	protected IConfig $config;
+	protected ?IUser $user = null;
+
+	public function __construct(IConfig $config, IUserSession $userSession) {
+		$this->config = $config;
+		$this->user = $userSession->getUser();
+	}
+
+	/**
+	 * Get the list of all allowed user config keys
+	 * @return string[]
+	 */
+	public function getAllowedConfigKeys(): array {
+		return array_map(function($config) {
+			return $config['key'];
+		}, self::ALLOWED_CONFIGS);
+	}
+
+	/**
+	 * Get the list of allowed config values for a given key
+	 *
+	 * @param string $key a valid config key
+	 * @return array
+	 */
+	private function getAllowedConfigValues(string $key): array {
+		foreach (self::ALLOWED_CONFIGS as $config) {
+			if ($config['key'] === $key) {
+				return $config['allowed'] ?? [];
+			}
+		}
+		return [];
+	}
+
+	/**
+	 * Get the default config value for a given key
+	 *
+	 * @param string $key a valid config key
+	 * @return string|bool|null
+	 */
+	private function getDefaultConfigValue(string $key) {
+		foreach (self::ALLOWED_CONFIGS as $config) {
+			if ($config['key'] === $key) {
+				return $config['default'];
+			}
+		}
+		return '';
+	}
+
+	/**
+	 * Set a user config
+	 *
+	 * @param string $view
+	 * @param string $key
+	 * @param string|bool $value
+	 * @throws \Exception
+	 * @throws \InvalidArgumentException
+	 */
+	public function setConfig(string $view, string $key, $value): void {
+		if ($this->user === null) {
+			throw new \Exception('No user logged in');
+		}
+
+		if (!$view) {
+			throw new \Exception('Unknown view');
+		}
+
+		if (!in_array($key, $this->getAllowedConfigKeys())) {
+			throw new \InvalidArgumentException('Unknown config key');
+		}
+	
+		if (!in_array($value, $this->getAllowedConfigValues($key))
+			&& !empty($this->getAllowedConfigValues($key))) {
+			throw new \InvalidArgumentException('Invalid config value');
+		}
+
+		// Cast boolean values
+		if (is_bool($this->getDefaultConfigValue($key))) {
+			$value = $value === '1';
+		}
+
+		$config = $this->getConfigs();
+		$config[$view][$key] = $value;
+
+		$this->config->setUserValue($this->user->getUID(), Application::APP_ID, self::CONFIG_KEY, json_encode($config));
+	}
+
+	/**
+	 * Get the current user configs array for a given view
+	 *
+	 * @return array
+	 */
+	public function getConfig(string $view): array {
+		if ($this->user === null) {
+			throw new \Exception('No user logged in');
+		}
+
+		$userId = $this->user->getUID();
+		$configs = json_decode($this->config->getUserValue($userId, Application::APP_ID, self::CONFIG_KEY, '[]'), true);
+		
+		if (!isset($configs[$view])) {
+			$configs[$view] = [];
+		}
+
+		// Extend undefined values with defaults
+		return array_reduce(self::ALLOWED_CONFIGS, function($carry, $config) use ($view, $configs) {
+			$key = $config['key'];
+			$carry[$key] = $configs[$view][$key] ?? $this->getDefaultConfigValue($key);
+			return $carry;
+		}, []);
+	}
+
+	/**
+	 * Get the current user configs array
+	 *
+	 * @return array
+	 */
+	public function getConfigs(): array {
+		if ($this->user === null) {
+			throw new \Exception('No user logged in');
+		}
+
+		$userId = $this->user->getUID();
+		$configs = json_decode($this->config->getUserValue($userId, Application::APP_ID, self::CONFIG_KEY, '[]'), true);
+		$views = array_keys($configs);
+		
+		return array_reduce($views, function($carry, $view) use ($configs) {
+			$carry[$view] = $this->getConfig($view);
+			return $carry;
+		}, []);
+	}
+}