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106 lines
3.4 KiB
PHP
106 lines
3.4 KiB
PHP
<?php
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/**
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* SPDX-FileCopyrightText: 2016 Nextcloud GmbH and Nextcloud contributors
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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namespace OCA\Files_Versions\Controller;
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use OCA\Files_Versions\Versions\IVersionManager;
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use OCP\AppFramework\Controller;
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use OCP\AppFramework\Http;
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use OCP\AppFramework\Http\Attribute\NoAdminRequired;
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use OCP\AppFramework\Http\Attribute\NoCSRFRequired;
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use OCP\AppFramework\Http\DataResponse;
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use OCP\AppFramework\Http\FileDisplayResponse;
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use OCP\AppFramework\Http\RedirectResponse;
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use OCP\Files\IRootFolder;
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use OCP\Files\NotFoundException;
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use OCP\IPreview;
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use OCP\IRequest;
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use OCP\IUserSession;
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use OCP\Preview\IMimeIconProvider;
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class PreviewController extends Controller {
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/** @var IRootFolder */
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private $rootFolder;
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/** @var IUserSession */
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private $userSession;
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/** @var IVersionManager */
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private $versionManager;
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/** @var IPreview */
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private $previewManager;
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public function __construct(
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string $appName,
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IRequest $request,
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IRootFolder $rootFolder,
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IUserSession $userSession,
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IVersionManager $versionManager,
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IPreview $previewManager,
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private IMimeIconProvider $mimeIconProvider,
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) {
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parent::__construct($appName, $request);
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$this->rootFolder = $rootFolder;
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$this->userSession = $userSession;
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$this->versionManager = $versionManager;
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$this->previewManager = $previewManager;
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}
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/**
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* Get the preview for a file version
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*
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* @param string $file Path of the file
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* @param int $x Width of the preview
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* @param int $y Height of the preview
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* @param string $version Version of the file to get the preview for
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* @param bool $mimeFallback Whether to fallback to the mime icon if no preview is available
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* @return FileDisplayResponse<Http::STATUS_OK, array{Content-Type: string}>|DataResponse<Http::STATUS_BAD_REQUEST|Http::STATUS_NOT_FOUND, array<empty>, array{}>|RedirectResponse<Http::STATUS_SEE_OTHER, array{}>
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*
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* 200: Preview returned
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* 303: Redirect to the mime icon url if mimeFallback is true
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* 400: Getting preview is not possible
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* 404: Preview not found
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*/
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#[NoAdminRequired]
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#[NoCSRFRequired]
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public function getPreview(
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string $file = '',
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int $x = 44,
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int $y = 44,
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string $version = '',
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bool $mimeFallback = false,
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) {
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if ($file === '' || $version === '' || $x === 0 || $y === 0) {
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return new DataResponse([], Http::STATUS_BAD_REQUEST);
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}
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$versionFile = null;
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try {
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$user = $this->userSession->getUser();
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$userFolder = $this->rootFolder->getUserFolder($user->getUID());
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$file = $userFolder->get($file);
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$versionFile = $this->versionManager->getVersionFile($user, $file, $version);
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$preview = $this->previewManager->getPreview($versionFile, $x, $y, true, IPreview::MODE_FILL, $versionFile->getMimetype());
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$response = new FileDisplayResponse($preview, Http::STATUS_OK, ['Content-Type' => $preview->getMimeType()]);
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$response->cacheFor(3600 * 24, false, true);
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return $response;
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} catch (NotFoundException $e) {
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// If we have no preview enabled, we can redirect to the mime icon if any
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if ($mimeFallback && $versionFile !== null) {
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$url = $this->mimeIconProvider->getMimeIconUrl($versionFile->getMimeType());
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if ($url !== null) {
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return new RedirectResponse($url);
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}
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}
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return new DataResponse([], Http::STATUS_NOT_FOUND);
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} catch (\InvalidArgumentException $e) {
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return new DataResponse([], Http::STATUS_BAD_REQUEST);
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}
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}
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}
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