145 lines
3.9 KiB
PHP
145 lines
3.9 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2020, Nextcloud, GmbH.
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*
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* @author Vincent Petry <vincent@nextcloud.com>
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* @author Carl Schwan <carl@carlschwan.eu>
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*
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* @license AGPL-3.0-or-later
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OC\Preview;
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use OCP\Files\File;
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use OCP\Http\Client\IClientService;
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use OCP\IConfig;
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use OCP\IImage;
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use OC\StreamImage;
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use Psr\Log\LoggerInterface;
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class Imaginary extends ProviderV2 {
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/** @var IConfig */
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private $config;
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/** @var IClientService */
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private $service;
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/** @var LoggerInterface */
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private $logger;
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public function __construct(array $config) {
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parent::__construct($config);
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$this->config = \OC::$server->get(IConfig::class);
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$this->service = \OC::$server->get(IClientService::class);
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$this->logger = \OC::$server->get(LoggerInterface::class);
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}
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/**
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* {@inheritDoc}
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*/
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public function getMimeType(): string {
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return self::supportedMimeTypes();
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}
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public static function supportedMimeTypes(): string {
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return '/image\/(bmp|x-bitmap|png|jpeg|gif|heic|svg|webp)/';
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}
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public function getCroppedThumbnail(File $file, int $maxX, int $maxY, bool $crop): ?IImage {
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$maxSizeForImages = $this->config->getSystemValue('preview_max_filesize_image', 50);
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$size = $file->getSize();
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if ($maxSizeForImages !== -1 && $size > ($maxSizeForImages * 1024 * 1024)) {
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return null;
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}
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$imaginaryUrl = $this->config->getSystemValueString('preview_imaginary_url', 'invalid');
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if ($imaginaryUrl === 'invalid') {
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$this->logger->error('Imaginary preview provider is enabled, but no url is configured. Please provide the url of your imaginary server to the \'preview_imaginary_url\' config variable.');
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return null;
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}
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$imaginaryUrl = rtrim($imaginaryUrl, '/');
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// Object store
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$stream = $file->fopen('r');
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$httpClient = $this->service->newClient();
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switch ($file->getMimeType()) {
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case 'image/gif':
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case 'image/png':
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$mimeType = 'png';
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break;
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default:
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$mimeType = 'jpeg';
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}
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$operations = [
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[
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'operation' => 'autorotate',
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],
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[
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'operation' => ($crop ? 'smartcrop' : 'fit'),
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'params' => [
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'width' => $maxX,
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'height' => $maxY,
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'stripmeta' => 'true',
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'type' => $mimeType,
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'norotation' => 'true',
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]
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]
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];
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try {
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$response = $httpClient->post(
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$imaginaryUrl . '/pipeline', [
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'query' => ['operations' => json_encode($operations)],
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'stream' => true,
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'content-type' => $file->getMimeType(),
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'body' => $stream,
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'nextcloud' => ['allow_local_address' => true],
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]);
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} catch (\Exception $e) {
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$this->logger->error('Imaginary preview generation failed: ' . $e->getMessage(), [
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'exception' => $e,
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]);
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return null;
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}
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if ($response->getStatusCode() !== 200) {
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$this->logger->error('Imaginary preview generation failed: ' . json_decode($response->getBody())['message']);
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return null;
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}
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if ($response->getHeader('X-Image-Width') && $response->getHeader('X-Image-Height')) {
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$maxX = (int)$response->getHeader('X-Image-Width');
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$maxY = (int)$response->getHeader('X-Image-Height');
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}
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$image = new StreamImage($response->getBody(), $response->getHeader('Content-Type'), $maxX, $maxY);
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return $image->valid() ? $image : null;
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}
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/**
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* {@inheritDoc}
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*/
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public function getThumbnail(File $file, int $maxX, int $maxY): ?IImage {
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return $this->getCroppedThumbnail($file, $maxX, $maxY, false);
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}
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}
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