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<?php
/**
* Nextcloud - Gallery
*
* This file is licensed under the Affero General Public License version 3 or
* later. See the COPYING file.
*
* @author Olivier Paroz <galleryapps@oparoz.com>
*
* @copyright Olivier Paroz 2017
*/
namespace OCA\Gallery\Service;
use OCP\Files\Node;
use OCP\ILogger;
use OCA\Gallery\Environment\Environment;
/**
* Contains methods which all services will need
*
* @package OCA\Gallery\Service
*/
abstract class Service {
/**
* @var string
*/
protected $appName;
/**
* @var Environment
*/
protected $environment;
/**
* @var ILogger
*/
protected $logger;
/**
* Constructor
*
* @param string $appName
* @param Environment $environment
* @param ILogger $logger
*/
public function __construct(
$appName,
Environment $environment,
ILogger $logger
) {
$this->appName = $appName;
$this->environment = $environment;
$this->logger = $logger;
}
/**
* Returns the file matching the given ID
*
* @param int $nodeId ID of the resource to locate
*
* @return Node
* @throws NotFoundServiceException
*/
public function getFile($nodeId) {
$node = $this->getNode($nodeId);
if ($node->getType() === 'file') {
$this->validateNode($node);
return $node;
} else {
throw new NotFoundServiceException("Cannot find a file with this ID");
}
}
/**
* Returns the node matching the given ID
*
* @param int $nodeId ID of the resource to locate
*
* @return Node
* @throws NotFoundServiceException
*/
private function getNode($nodeId) {
try {
$node = $this->environment->getResourceFromId($nodeId);
return $node;
} catch (\Exception $exception) {
throw new NotFoundServiceException($exception->getMessage());
}
}
/**
* Makes extra sure that we can actually do something with the file
*
* @param Node $node
*
* @throws NotFoundServiceException
*/
private function validateNode($node) {
if (!$node->getMimetype() || !$node->isReadable()) {
throw new NotFoundServiceException("Can't access the file");
}
}
}