Split Storage usage and Storage configuration

src/Model/Storage/FilesystemConfig.php

@@ -0,0 +1,99 @@
+<?php
+/**
+ * @copyright Copyright (C) 2010-2021, the Friendica project
+ *
+ * @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 <https://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace Friendica\Model\Storage;
+
+use Friendica\Core\Config\IConfig;
+use Friendica\Core\L10n;
+
+/**
+ * Filesystem based storage backend configuration
+ */
+class FilesystemConfig implements IStorageConfiguration
+{
+	// Default base folder
+	const DEFAULT_BASE_FOLDER = 'storage';
+
+	/** @var IConfig */
+	private $config;
+
+	/** @var string */
+	private $storagePath;
+
+	/** @var L10n */
+	private $l10n;
+
+	/**
+	 * Returns the current storage path
+	 *
+	 * @return string
+	 */
+	public function getStoragePath(): string
+	{
+		return $this->storagePath;
+	}
+
+	/**
+	 * Filesystem constructor.
+	 *
+	 * @param IConfig         $config
+	 * @param L10n            $l10n
+	 */
+	public function __construct(IConfig $config, L10n $l10n)
+	{
+		$this->config = $config;
+		$this->l10n   = $l10n;
+
+		$path              = $this->config->get('storage', 'filesystem_path', self::DEFAULT_BASE_FOLDER);
+		$this->storagePath = rtrim($path, '/');
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	public function getOptions(): array
+	{
+		return [
+			'storagepath' => [
+				'input',
+				$this->l10n->t('Storage base path'),
+				$this->storagePath,
+				$this->l10n->t('Folder where uploaded files are saved. For maximum security, This should be a path outside web server folder tree')
+			]
+		];
+	}
+
+	/**
+	 * @inheritDoc
+	 */
+	public function saveOptions(array $data): array
+	{
+		$storagePath = $data['storagepath'] ?? '';
+		if ($storagePath === '' || !is_dir($storagePath)) {
+			return [
+				'storagepath' => $this->l10n->t('Enter a valid existing folder')
+			];
+		};
+		$this->config->set('storage', 'filesystem_path', $storagePath);
+		$this->storagePath = $storagePath;
+		return [];
+	}
+}