<?php /** * SPDX-FileCopyrightText: 2016 Nextcloud GmbH and Nextcloud contributors * SPDX-License-Identifier: AGPL-3.0-or-later */ namespace OCA\Files_Versions\Controller; use OCA\Files_Versions\Versions\IVersionManager; use OCP\AppFramework\Controller; use OCP\AppFramework\Http; use OCP\AppFramework\Http\DataResponse; use OCP\AppFramework\Http\FileDisplayResponse; use OCP\Files\IRootFolder; use OCP\Files\NotFoundException; use OCP\IPreview; use OCP\IRequest; use OCP\IUserSession; class PreviewController extends Controller { /** @var IRootFolder */ private $rootFolder; /** @var IUserSession */ private $userSession; /** @var IVersionManager */ private $versionManager; /** @var IPreview */ private $previewManager; public function __construct( string $appName, IRequest $request, IRootFolder $rootFolder, IUserSession $userSession, IVersionManager $versionManager, IPreview $previewManager ) { parent::__construct($appName, $request); $this->rootFolder = $rootFolder; $this->userSession = $userSession; $this->versionManager = $versionManager; $this->previewManager = $previewManager; } /** * @NoAdminRequired * @NoCSRFRequired * * Get the preview for a file version * * @param string $file Path of the file * @param int $x Width of the preview * @param int $y Height of the preview * @param string $version Version of the file to get the preview for * @return FileDisplayResponse<Http::STATUS_OK, array{Content-Type: string}>|DataResponse<Http::STATUS_BAD_REQUEST|Http::STATUS_NOT_FOUND, array<empty>, array{}> * * 200: Preview returned * 400: Getting preview is not possible * 404: Preview not found */ public function getPreview( string $file = '', int $x = 44, int $y = 44, string $version = '' ) { if ($file === '' || $version === '' || $x === 0 || $y === 0) { return new DataResponse([], Http::STATUS_BAD_REQUEST); } try { $user = $this->userSession->getUser(); $userFolder = $this->rootFolder->getUserFolder($user->getUID()); $file = $userFolder->get($file); $versionFile = $this->versionManager->getVersionFile($user, $file, $version); $preview = $this->previewManager->getPreview($versionFile, $x, $y, true, IPreview::MODE_FILL, $versionFile->getMimetype()); return new FileDisplayResponse($preview, Http::STATUS_OK, ['Content-Type' => $preview->getMimeType()]); } catch (NotFoundException $e) { return new DataResponse([], Http::STATUS_NOT_FOUND); } catch (\InvalidArgumentException $e) { return new DataResponse([], Http::STATUS_BAD_REQUEST); } } }