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<?php
declare(strict_types=1);
/**
* @copyright 2018 Christoph Wurst <christoph@winzerhof-wurst.at>
*
* @author 2018 Christoph Wurst <christoph@winzerhof-wurst.at>
*
* @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\Recommendations\Service;
use function array_filter;
use function array_map;
use function array_merge;
use function array_slice;
use function iterator_to_array;
use OCP\Files\NotFoundException;
use function usort;
use Generator;
use OC\Share\Constants;
use OCP\Files\IRootFolder;
use OCP\IL10N;
use OCP\IUser;
use OCP\Share\IManager;
use OCP\Share\IShare;
class RecentlySharedFilesSource implements IRecommendationSource {
/** @var IManager */
private $shareManager;
/** @var IRootFolder */
private $rootFolder;
/** @var IL10N */
private $l10n;
public function __construct(IManager $shareManager,
IRootFolder $rootFolder,
IL10N $l10n) {
$this->shareManager = $shareManager;
$this->rootFolder = $rootFolder;
$this->l10n = $l10n;
}
/**
* @param IUser $user
* @param int $shareType
*
* @return Generator<IShare>
*/
private function getAllShares(IUser $user, int $shareType): Generator {
$offset = 0;
$pageSize = 50;
while (count($page = $this->shareManager->getSharedWith(
$user->getUID(),
$shareType,
null,
$pageSize,
$offset
))) {
foreach ($page as $share) {
yield $share;
}
$offset += $pageSize;
}
}
/**
* @param IShare[] $shares
*
* @return IShare[]
*/
private function sortShares(array $shares): array {
usort($shares, function (IShare $a, IShare $b) {
return $b->getShareTime()->getTimestamp() - $a->getShareTime()->getTimestamp();
});
return $shares;
}
/**
* @param IUser $user
*
* @todo load other share types as well
*
* @return IShare[]
*/
private function getMostRecentShares(IUser $user, int $max) {
$shares = $this->sortShares(array_merge(
iterator_to_array($this->getAllShares($user, Constants::SHARE_TYPE_USER)),
iterator_to_array($this->getAllShares($user, Constants::SHARE_TYPE_GROUP))
));
return array_slice($shares, 0, $max);
}
/**
* @return IRecommendation[]
*/
public function getMostRecentRecommendation(IUser $user, int $max): array {
$shares = $this->getMostRecentShares($user, $max);
$userFolder = $this->rootFolder->getUserFolder($user->getUID());
return array_filter(array_map(function (IShare $share) use ($userFolder) {
try {
return new RecommendedFile(
$userFolder->getRelativePath($userFolder->get($share->getTarget())->getParent()->getPath()),
$share->getNode(),
$share->getShareTime()->getTimestamp(),
$this->l10n->t("Recently shared")
);
} catch (NotFoundException $ex) {
return null;
}
}, $shares));
}
}