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