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<?php
declare(strict_types=1);
/**
* @copyright Copyright (c) 2022 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 OC\Collaboration\Reference;
use OC\User\NoUserException;
use OCP\Collaboration\Reference\IReference;
use OCP\Collaboration\Reference\IReferenceProvider;
use OCP\Files\InvalidPathException;
use OCP\Files\IRootFolder;
use OCP\Files\Node;
use OCP\Files\NotFoundException;
use OCP\Files\NotPermittedException;
use OCP\IPreview;
use OCP\IURLGenerator;
use OCP\IUserSession;
class FileReferenceProvider implements IReferenceProvider {
private IURLGenerator $urlGenerator;
private IRootFolder $rootFolder;
private ?string $userId;
private IPreview $previewManager;
public function __construct(IURLGenerator $urlGenerator, IRootFolder $rootFolder, IUserSession $userSession, IPreview $previewManager) {
$this->urlGenerator = $urlGenerator;
$this->rootFolder = $rootFolder;
$this->userId = $userSession->getUser() ? $userSession->getUser()->getUID() : null;
$this->previewManager = $previewManager;
}
public function matchReference(string $referenceText): bool {
return str_starts_with($referenceText, $this->urlGenerator->getAbsoluteURL('/index.php/f/'))
|| str_starts_with($referenceText, $this->urlGenerator->getAbsoluteURL('/f/'));
}
public function resolveReference(string $referenceText): ?IReference {
if ($this->matchReference($referenceText)) {
$reference = new Reference($referenceText);
try {
$this->fetchReference($reference);
} catch (NotFoundException $e) {
$reference->setRichObject('file', null);
$reference->setAccessible(false);
}
return $reference;
}
return null;
}
/**
* @throws NotFoundException
*/
private function fetchReference(Reference $reference) {
if ($this->userId === null) {
throw new NotFoundException();
}
$fileId = str_replace($this->urlGenerator->getAbsoluteURL('/index.php/f/'), '', $reference->getId());
$fileId = str_replace($this->urlGenerator->getAbsoluteURL('/f/'), '', $fileId);
try {
$userFolder = $this->rootFolder->getUserFolder($this->userId);
$files = $userFolder->getById((int)$fileId);
if (empty($files)) {
throw new NotFoundException();
}
/** @var Node $file */
$file = array_shift($files);
$reference->setTitle($file->getName());
$reference->setDescription($file->getMimetype());
$reference->setUrl($this->urlGenerator->getAbsoluteURL('/index.php/f/' . $fileId));
$reference->setImageUrl($this->urlGenerator->linkToRouteAbsolute('core.Preview.getPreviewByFileId', ['x' => 1600, 'y' => 630, 'fileId' => $fileId]));
$reference->setRichObject('file', [
'id' => $file->getId(),
'name' => $file->getName(),
'size' => $file->getSize(),
'path' => $file->getPath(),
'link' => $reference->getUrl(),
'mimetype' => $file->getMimetype(),
'preview-available' => $this->previewManager->isAvailable($file)
]);
} catch (InvalidPathException|NotFoundException|NotPermittedException|NoUserException $e) {
throw new NotFoundException();
}
}
public function isGloballyCacheable(): bool {
return false;
}
public function getCacheKey(string $referenceId): string {
return $this->userId ?? '';
}
}
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