mirror of https://github.com/nextcloud/bookmarks
100 lines
2.4 KiB
PHP
100 lines
2.4 KiB
PHP
<?php
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/*
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* Copyright (c) 2020-2024. The Nextcloud Bookmarks contributors.
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*
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* This file is licensed under the Affero General Public License version 3 or later. See the COPYING file.
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*/
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namespace OCA\Bookmarks\Service;
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use Marcelklehr\LinkPreview\Client as LinkPreview;
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use OCA\Bookmarks\Http\Client;
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use OCA\Bookmarks\Http\RequestFactory;
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use OCP\Http\Client\IClientService;
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use OCP\IConfig;
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use Psr\Log\LoggerInterface;
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use Rowbot\URL\Exception\TypeError;
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use Rowbot\URL\URL;
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class LinkExplorer {
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private $linkPreview;
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private $logger;
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/**
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* @var string
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*/
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private $enabled;
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public function __construct(IClientService $clientService, LoggerInterface $logger, IConfig $config) {
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$client = $clientService->newClient();
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$this->linkPreview = new LinkPreview(new Client($client), new RequestFactory());
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$this->linkPreview->getParser('general')->setMinimumImageDimensions(150, 550);
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$this->logger = $logger;
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$this->enabled = $config->getAppValue('bookmarks', 'privacy.enableScraping', 'false');
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}
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/**
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* @brief Load Url and receive Metadata (Title)
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* @param string $url Url to load and analyze
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* @return array Metadata for url;
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*/
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public function get($url): array {
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$data = ['url' => $url];
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if ($this->enabled === 'false') {
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return $data;
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}
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// Use LinkPreview to get the meta data
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try {
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libxml_use_internal_errors(false);
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$preview = $this->linkPreview->getLink($url)->getPreview();
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} catch (\Throwable $e) {
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$this->logger->debug($e->getMessage(), ['app' => 'bookmarks']);
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return $data;
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}
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$data = $preview->toArray();
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if (!isset($data)) {
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return ['url' => $url];
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}
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$data['url'] = (string)$preview->getUrl();
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if (isset($data['image'])) {
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if (isset($data['image']['small'])) {
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try {
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$data['image']['small'] = $this->resolveUrl($data['image']['small'], $data['url']);
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} catch (TypeError $e) {
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// noop
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}
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}
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if (isset($data['image']['large'])) {
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try {
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$data['image']['large'] = $this->resolveUrl($data['image']['large'], $data['url']);
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} catch (TypeError $e) {
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// noop
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}
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}
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if (isset($data['image']['favicon'])) {
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try {
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$data['image']['favicon'] = $this->resolveUrl($data['image']['favicon'], $data['url']);
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} catch (TypeError $e) {
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// noop
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}
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}
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}
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return $data;
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}
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/**
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* @throws TypeError
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*/
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private function resolveUrl(string $link, string $base) : string {
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$url = new URL($link, $base);
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return $url->href;
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}
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}
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