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<?php
declare(strict_types=1);
/**
* @copyright Copyright (c) 2022 Robin Appelman <robin@icewind.nl>
*
* @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\Photos\Sabre\Album;
use OC\Metadata\IMetadataManager;
use OCA\DAV\Connector\Sabre\FilesPlugin;
use OCA\Photos\Album\AlbumMapper;
use OCP\IConfig;
use OCP\IPreview;
use Sabre\DAV\INode;
use Sabre\DAV\PropFind;
use Sabre\DAV\PropPatch;
use Sabre\DAV\Server;
use Sabre\DAV\ServerPlugin;
use Sabre\DAV\Tree;
class PropFindPlugin extends ServerPlugin {
public const FILE_NAME_PROPERTYNAME = '{http://nextcloud.org/ns}file-name';
public const REALPATH_PROPERTYNAME = '{http://nextcloud.org/ns}realpath';
public const FAVORITE_PROPERTYNAME = '{http://owncloud.org/ns}favorite';
public const DATE_RANGE_PROPERTYNAME = '{http://nextcloud.org/ns}dateRange';
public const LOCATION_PROPERTYNAME = '{http://nextcloud.org/ns}location';
public const LAST_PHOTO_PROPERTYNAME = '{http://nextcloud.org/ns}last-photo';
public const NBITEMS_PROPERTYNAME = '{http://nextcloud.org/ns}nbItems';
public const TAG_FAVORITE = '_$!<Favorite>!$_';
private IConfig $config;
private IMetadataManager $metadataManager;
private IPreview $previewManager;
private bool $metadataEnabled;
private ?Tree $tree;
private AlbumMapper $albumMapper;
public function __construct(
IConfig $config,
IMetadataManager $metadataManager,
IPreview $previewManager,
AlbumMapper $albumMapper
) {
$this->config = $config;
$this->metadataManager = $metadataManager;
$this->previewManager = $previewManager;
$this->albumMapper = $albumMapper;
$this->metadataEnabled = $this->config->getSystemValueBool('enable_file_metadata', true);
}
/**
* @return void
*/
public function initialize(Server $server) {
$this->tree = $server->tree;
$server->on('propFind', [$this, 'propFind']);
$server->on('propPatch', [$this, 'handleUpdateProperties']);
}
public function propFind(PropFind $propFind, INode $node): void {
if ($node instanceof AlbumPhoto) {
$propFind->handle(FilesPlugin::INTERNAL_FILEID_PROPERTYNAME, fn () => $node->getFile()->getFileId());
$propFind->handle(FilesPlugin::GETETAG_PROPERTYNAME, fn () => $node->getETag());
$propFind->handle(self::FILE_NAME_PROPERTYNAME, fn () => $node->getFile()->getName());
$propFind->handle(self::REALPATH_PROPERTYNAME, fn () => $node->getFileInfo()->getPath());
$propFind->handle(self::FAVORITE_PROPERTYNAME, fn () => $node->isFavorite() ? 1 : 0);
$propFind->handle(FilesPlugin::HAS_PREVIEW_PROPERTYNAME, function () use ($node) {
return json_encode($this->previewManager->isAvailable($node->getFileInfo()));
});
if ($this->metadataEnabled) {
$propFind->handle(FilesPlugin::FILE_METADATA_SIZE, function () use ($node) {
if (!str_starts_with($node->getFile()->getMimetype(), 'image')) {
return json_encode((object)[]);
}
if ($node->getFile()->hasMetadata('size')) {
$sizeMetadata = $node->getFile()->getMetadata('size');
} else {
$sizeMetadata = $this->metadataManager->fetchMetadataFor('size', [$node->getFile()->getFileId()])[$node->getFile()->getFileId()];
}
return json_encode((object)$sizeMetadata->getMetadata());
});
}
}
if ($node instanceof AlbumRoot) {
$propFind->handle(self::LAST_PHOTO_PROPERTYNAME, fn () => $node->getAlbum()->getAlbum()->getLastAddedPhoto());
$propFind->handle(self::NBITEMS_PROPERTYNAME, fn () => count($node->getChildren()));
$propFind->handle(self::LOCATION_PROPERTYNAME, fn () => $node->getAlbum()->getAlbum()->getLocation());
$propFind->handle(self::DATE_RANGE_PROPERTYNAME, fn () => json_encode($node->getDateRange()));
// TODO detect dynamically which metadata groups are requested and
// preload all of them and not just size
if ($this->metadataEnabled && in_array(FilesPlugin::FILE_METADATA_SIZE, $propFind->getRequestedProperties(), true)) {
$fileIds = $node->getAlbum()->getFileIds();
$preloadedMetadata = $this->metadataManager->fetchMetadataFor('size', $fileIds);
foreach ($node->getAlbum()->getFiles() as $file) {
if (str_starts_with($file->getMimeType(), 'image')) {
$file->setMetadata('size', $preloadedMetadata[$file->getFileId()]);
}
}
}
}
}
public function handleUpdateProperties($path, PropPatch $propPatch): void {
$node = $this->tree->getNodeForPath($path);
if ($node instanceof AlbumRoot) {
$propPatch->handle(self::LOCATION_PROPERTYNAME, function ($location) use ($node) {
$this->albumMapper->setLocation($node->getAlbum()->getAlbum()->getId(), $location);
return true;
});
}
}
}
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