1 files changed, 112 insertions, 0 deletions
diff --git a/apps/theming/lib/ImageManager.php b/apps/theming/lib/ImageManager.php
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+++ b/apps/theming/lib/ImageManager.php
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+<?php
+/**
+ * @copyright Copyright (c) 2016 Julius Härtl <jus@bitgrid.net>
+ *
+ * @author Julius Härtl <jus@bitgrid.net>
+ *
+ * @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;
+
+use OCP\IConfig;
+use OCP\Files\IAppData;
+use OCP\Files\NotFoundException;
+use OCP\Files\NotPermittedException;
+
+class ImageManager {
+
+	/** @var IConfig */
+	private $config;
+	/** @var IAppData */
+	private $appData;
+
+	/**
+	 * ImageManager constructor.
+	 *
+	 * @param IConfig $config
+	 * @param IAppData $appData
+	 */
+	public function __construct(IConfig $config,
+								IAppData $appData
+	) {
+		$this->config = $config;
+		$this->appData = $appData;
+	}
+
+	/**
+	 * Get folder for current theming files
+	 *
+	 * @return \OCP\Files\SimpleFS\ISimpleFolder
+	 * @throws NotPermittedException
+	 * @throws \RuntimeException
+	 */
+	public function getCacheFolder() {
+		$cacheBusterValue = $this->config->getAppValue('theming', 'cachebuster', '0');
+		try {
+			$folder = $this->appData->getFolder($cacheBusterValue);
+		} catch (NotFoundException $e) {
+			$folder = $this->appData->newFolder($cacheBusterValue);
+			$this->cleanup();
+		}
+		return $folder;
+	}
+
+	/**
+	 * Get a file from AppData
+	 *
+	 * @param string $filename
+	 * @throws NotFoundException
+	 * @return \OCP\Files\SimpleFS\ISimpleFile
+	 */
+	public function getCachedImage($filename) {
+		$currentFolder = $this->getCacheFolder();
+		return $currentFolder->getFile($filename);
+	}
+
+	/**
+	 * Store a file for theming in AppData
+	 *
+	 * @param string $filename
+	 * @param string $data
+	 * @return \OCP\Files\SimpleFS\ISimpleFile
+	 */
+	public function setCachedImage($filename, $data) {
+		$currentFolder = $this->getCacheFolder();
+		if ($currentFolder->fileExists($filename)) {
+			$file = $currentFolder->getFile($filename);
+		} else {
+			$file = $currentFolder->newFile($filename);
+		}
+		$file->putContent($data);
+		return $file;
+	}
+
+	/**
+	 * remove cached files that are not required any longer
+	 */
+	public function cleanup() {
+		$currentFolder = $this->getCacheFolder();
+		$folders = $this->appData->getDirectoryListing();
+		foreach ($folders as $folder) {
+			if ($folder->getName() !== $currentFolder->getName()) {
+				$folder->delete();
+			}
+		}
+	}
+}