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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 $filename
* @return null|\OCP\Files\SimpleFS\ISimpleFile
*/
public function getCachedImage($filename) {
$currentFolder = $this->getCacheFolder();
if($currentFolder->fileExists($filename)) {
return $currentFolder->getFile($filename);
} else {
return null;
}
}
/**
* 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();
}
}
}
}
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