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3 years ago
  1. <?php
  2. declare(strict_types=1);
  3. /**
  4. * @copyright Copyright (c) 2016, Roeland Jago Douma <roeland@famdouma.nl>
  5. *
  6. * @author Roeland Jago Douma <roeland@famdouma.nl>
  7. *
  8. * @license GNU AGPL version 3 or any later version
  9. *
  10. * This program is free software: you can redistribute it and/or modify
  11. * it under the terms of the GNU Affero General Public License as
  12. * published by the Free Software Foundation, either version 3 of the
  13. * License, or (at your option) any later version.
  14. *
  15. * This program is distributed in the hope that it will be useful,
  16. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18. * GNU Affero General Public License for more details.
  19. *
  20. * You should have received a copy of the GNU Affero General Public License
  21. * along with this program. If not, see <http://www.gnu.org/licenses/>.
  22. *
  23. */
  24. namespace OC\Preview;
  25. use OCP\Files\Folder;
  26. use OCP\Files\IAppData;
  27. use OCP\Files\Node;
  28. use OCP\Files\NotFoundException;
  29. /**
  30. * Class Watcher
  31. *
  32. * @package OC\Preview
  33. *
  34. * Class that will watch filesystem activity and remove previews as needed.
  35. */
  36. class Watcher {
  37. /** @var IAppData */
  38. private $appData;
  39. /**
  40. * Watcher constructor.
  41. *
  42. * @param IAppData $appData
  43. */
  44. public function __construct(IAppData $appData) {
  45. $this->appData = $appData;
  46. }
  47. public function postWrite(Node $node) {
  48. $this->deleteNode($node);
  49. }
  50. protected function deleteNode(Node $node) {
  51. // We only handle files
  52. if ($node instanceof Folder) {
  53. return;
  54. }
  55. try {
  56. $folder = $this->appData->getFolder((string)$node->getId());
  57. $folder->delete();
  58. } catch (NotFoundException $e) {
  59. //Nothing to do
  60. }
  61. }
  62. public function versionRollback(array $data) {
  63. if (isset($data['node'])) {
  64. $this->deleteNode($data['node']);
  65. }
  66. }
  67. }