573 lines
24 KiB
PHP
573 lines
24 KiB
PHP
<?php
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/**
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* RssBridgeYoutube
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* Returns the newest videos
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* WARNING: to parse big playlists (over ~90 videos), you need to edit simple_html_dom.php:
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* change: define('MAX_FILE_SIZE', 600000);
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* into: define('MAX_FILE_SIZE', 900000); (or more)
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*/
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class YoutubeBridge extends BridgeAbstract
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{
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const NAME = 'YouTube Bridge';
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const URI = 'https://www.youtube.com';
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const CACHE_TIMEOUT = 60 * 60 * 3;
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const DESCRIPTION = 'Returns the 10 newest videos by username/channel/playlist or search';
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const PARAMETERS = [
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'By username' => [
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'u' => [
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'name' => 'username',
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'exampleValue' => 'LinusTechTips',
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'required' => true
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]
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],
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'By channel id' => [
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'c' => [
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'name' => 'channel id',
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'exampleValue' => 'UCw38-8_Ibv_L6hlKChHO9dQ',
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'required' => true
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]
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],
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'By custom name' => [
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'custom' => [
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'name' => 'custom name',
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'exampleValue' => 'LinusTechTips',
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'required' => true
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]
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],
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'By playlist Id' => [
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'p' => [
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'name' => 'playlist id',
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'exampleValue' => 'PL8mG-RkN2uTzJc8N0EoyhdC54prvBBLpj',
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'required' => true
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]
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],
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'Search result' => [
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's' => [
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'name' => 'search keyword',
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'exampleValue' => 'LinusTechTips',
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'required' => true
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],
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'pa' => [
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'name' => 'page',
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'type' => 'number',
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'title' => 'This option is not work anymore, as YouTube will always return the same page',
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'exampleValue' => 1
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]
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],
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'global' => [
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'duration_min' => [
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'name' => 'min. duration (minutes)',
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'type' => 'number',
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'title' => 'Minimum duration for the video in minutes',
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'exampleValue' => 5
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],
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'duration_max' => [
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'name' => 'max. duration (minutes)',
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'type' => 'number',
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'title' => 'Maximum duration for the video in minutes',
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'exampleValue' => 10
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]
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]
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];
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private $feedName = '';
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private $feeduri = '';
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private $feedIconUrl = '';
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// This took from repo BetterVideoRss of VerifiedJoseph.
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const URI_REGEX = '/(https?:\/\/(?:www\.)?(?:[a-zA-Z0-9-.]{2,256}\.[a-z]{2,20})(\:[0-9]{2 ,4})?(?:\/[a-zA-Z0-9@:%_\+.,~#"\'!?&\/\/=\-*]+|\/)?)/ims'; //phpcs:ignore
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public function collectData()
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{
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$cacheKey = 'youtube_rate_limit';
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if ($this->cache->get($cacheKey)) {
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throw new HttpException('429 Too Many Requests', 429);
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}
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try {
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$this->collectDataInternal();
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} catch (HttpException $e) {
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if ($e->getCode() === 429) {
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$this->cache->set($cacheKey, true, 60 * 16);
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}
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throw $e;
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}
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}
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private function collectDataInternal()
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{
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$html = '';
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$url_feed = '';
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$url_listing = '';
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$username = $this->getInput('u');
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$channel = $this->getInput('c');
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$custom = $this->getInput('custom');
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$playlist = $this->getInput('p');
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$search = $this->getInput('s');
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$durationMin = $this->getInput('duration_min');
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$durationMax = $this->getInput('duration_max');
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// Whether to discriminate videos by duration
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$filterByDuration = $durationMin || $durationMax;
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if ($username) {
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// user and channel
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$url_feed = self::URI . '/feeds/videos.xml?user=' . urlencode($username);
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$url_listing = self::URI . '/user/' . urlencode($username) . '/videos';
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} elseif ($channel) {
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$url_feed = self::URI . '/feeds/videos.xml?channel_id=' . urlencode($channel);
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$url_listing = self::URI . '/channel/' . urlencode($channel) . '/videos';
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} elseif ($custom) {
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$url_listing = self::URI . '/' . urlencode($custom) . '/videos';
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}
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if ($url_feed || $url_listing) {
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// user, channel or custom
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$this->feeduri = $url_listing;
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if ($custom) {
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// Extract the feed url for the custom name
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$html = $this->fetch($url_listing);
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$jsonData = $this->extractJsonFromHtml($html);
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// Pluck out the rss feed url
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$url_feed = $jsonData->metadata->channelMetadataRenderer->rssUrl;
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$this->feedIconUrl = $jsonData->metadata->channelMetadataRenderer->avatar->thumbnails[0]->url;
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}
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if ($filterByDuration) {
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if (!$custom) {
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// Fetch the html page
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$html = $this->fetch($url_listing);
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$jsonData = $this->extractJsonFromHtml($html);
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}
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$channel_id = '';
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if (isset($jsonData->contents)) {
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$channel_id = $jsonData->metadata->channelMetadataRenderer->externalId;
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$jsonData = $jsonData->contents->twoColumnBrowseResultsRenderer->tabs[1];
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$jsonData = $jsonData->tabRenderer->content->richGridRenderer->contents;
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// $jsonData = $jsonData->itemSectionRenderer->contents[0]->gridRenderer->items;
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$this->fetchItemsFromFromJsonData($jsonData);
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} else {
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returnServerError('Unable to get data from YouTube');
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}
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} else {
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// Fetch the xml feed
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$html = $this->fetch($url_feed);
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$this->extractItemsFromXmlFeed($html);
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}
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$this->feedName = str_replace(' - YouTube', '', $html->find('title', 0)->plaintext);
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} elseif ($playlist) {
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// playlist
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$url_feed = self::URI . '/feeds/videos.xml?playlist_id=' . urlencode($playlist);
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$url_listing = self::URI . '/playlist?list=' . urlencode($playlist);
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$html = $this->fetch($url_listing);
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$jsonData = $this->extractJsonFromHtml($html);
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// TODO: this method returns only first 100 video items
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// if it has more videos, playlistVideoListRenderer will have continuationItemRenderer as last element
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$jsonData = $jsonData->contents->twoColumnBrowseResultsRenderer->tabs[0] ?? null;
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if (!$jsonData) {
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// playlist probably doesnt exists
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throw new \Exception('Unable to find playlist: ' . $url_listing);
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}
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$jsonData = $jsonData->tabRenderer->content->sectionListRenderer->contents[0]->itemSectionRenderer;
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$jsonData = $jsonData->contents[0]->playlistVideoListRenderer->contents;
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$item_count = count($jsonData);
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if ($item_count > 15 || $filterByDuration) {
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$this->fetchItemsFromFromJsonData($jsonData);
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} else {
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$xml = $this->fetch($url_feed);
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$this->extractItemsFromXmlFeed($xml);
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}
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$this->feedName = 'Playlist: ' . str_replace(' - YouTube', '', $html->find('title', 0)->plaintext);
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usort($this->items, function ($item1, $item2) {
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if (!is_int($item1['timestamp']) && !is_int($item2['timestamp'])) {
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$item1['timestamp'] = strtotime($item1['timestamp']);
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$item2['timestamp'] = strtotime($item2['timestamp']);
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}
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return $item2['timestamp'] - $item1['timestamp'];
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});
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} elseif ($search) {
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// search
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$url_listing = self::URI . '/results?search_query=' . urlencode($search) . '&sp=CAI%253D';
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$html = $this->fetch($url_listing);
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$jsonData = $this->extractJsonFromHtml($html);
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$jsonData = $jsonData->contents->twoColumnSearchResultsRenderer->primaryContents;
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$jsonData = $jsonData->sectionListRenderer->contents;
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foreach ($jsonData as $data) {
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// Search result includes some ads, have to filter them
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if (isset($data->itemSectionRenderer->contents[0]->videoRenderer)) {
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$jsonData = $data->itemSectionRenderer->contents;
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break;
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}
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}
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$this->fetchItemsFromFromJsonData($jsonData);
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$this->feeduri = $url_listing;
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$this->feedName = 'Search: ' . $search;
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} else {
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returnClientError("You must either specify either:\n - YouTube username (?u=...)\n - Channel id (?c=...)\n - Playlist id (?p=...)\n - Search (?s=...)");
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}
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}
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private function fetchVideoDetails($videoId, &$author, &$description, &$timestamp)
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{
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$url = self::URI . "/watch?v=$videoId";
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$html = $this->fetch($url, true);
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// Skip unavailable videos
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if (strpos($html->innertext, 'IS_UNAVAILABLE_PAGE') !== false) {
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return;
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}
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$elAuthor = $html->find('span[itemprop=author] > link[itemprop=name]', 0);
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if (!is_null($elAuthor)) {
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$author = $elAuthor->getAttribute('content');
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}
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$elDatePublished = $html->find('meta[itemprop=datePublished]', 0);
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if (!is_null($elDatePublished)) {
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$timestamp = strtotime($elDatePublished->getAttribute('content'));
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}
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$jsonData = $this->extractJsonFromHtml($html);
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if (!isset($jsonData->contents)) {
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return;
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}
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$jsonData = $jsonData->contents->twoColumnWatchNextResults->results->results->contents ?? null;
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if (!$jsonData) {
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throw new \Exception('Unable to find json data');
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}
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$videoSecondaryInfo = null;
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foreach ($jsonData as $item) {
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if (isset($item->videoSecondaryInfoRenderer)) {
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$videoSecondaryInfo = $item->videoSecondaryInfoRenderer;
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break;
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}
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}
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if (!$videoSecondaryInfo) {
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returnServerError('Could not find videoSecondaryInfoRenderer. Error at: ' . $videoId);
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}
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$description = $videoSecondaryInfo->attributedDescription->content ?? '';
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// Default whitespace chars used by trim + non-breaking spaces (https://en.wikipedia.org/wiki/Non-breaking_space)
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$whitespaceChars = " \t\n\r\0\x0B\u{A0}\u{2060}\u{202F}\u{2007}";
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$descEnhancements = $this->ytBridgeGetVideoDescriptionEnhancements($videoSecondaryInfo, $description, self::URI, $whitespaceChars);
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foreach ($descEnhancements as $descEnhancement) {
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if (isset($descEnhancement['url'])) {
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$descBefore = mb_substr($description, 0, $descEnhancement['pos']);
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$descValue = mb_substr($description, $descEnhancement['pos'], $descEnhancement['len']);
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$descAfter = mb_substr($description, $descEnhancement['pos'] + $descEnhancement['len'], null);
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// Extended trim for the display value of internal links, e.g.:
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// FAVICON • Video Name
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// FAVICON / @ChannelName
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$descValue = trim($descValue, $whitespaceChars . '•/');
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$description = sprintf('%s<a href="%s" target="_blank">%s</a>%s', $descBefore, $descEnhancement['url'], $descValue, $descAfter);
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}
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}
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}
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private function ytBridgeGetVideoDescriptionEnhancements(
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object $videoSecondaryInfo,
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string $descriptionContent,
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string $baseUrl,
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string $whitespaceChars
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): array {
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$commandRuns = $videoSecondaryInfo->attributedDescription->commandRuns ?? [];
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if (count($commandRuns) <= 0) {
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return [];
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}
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$enhancements = [];
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$boundaryWhitespaceChars = mb_str_split($whitespaceChars);
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$boundaryStartChars = array_merge($boundaryWhitespaceChars, [':', '-', '(']);
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$boundaryEndChars = array_merge($boundaryWhitespaceChars, [',', '.', "'", ')']);
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$hashtagBoundaryEndChars = array_merge($boundaryEndChars, ['#', '-']);
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$descriptionContentLength = mb_strlen($descriptionContent);
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$minPositionOffset = 0;
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$prevStartPosition = 0;
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$totalLength = 0;
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$maxPositionByStartIndex = [];
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foreach (array_reverse($commandRuns) as $commandRun) {
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$endPosition = $commandRun->startIndex + $commandRun->length;
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if ($endPosition < $prevStartPosition) {
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$totalLength += 1;
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}
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$totalLength += $commandRun->length;
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$maxPositionByStartIndex[$commandRun->startIndex] = $totalLength;
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$prevStartPosition = $commandRun->startIndex;
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}
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foreach ($commandRuns as $commandRun) {
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$commandMetadata = $commandRun->onTap->innertubeCommand->commandMetadata->webCommandMetadata ?? null;
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if (!isset($commandMetadata)) {
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continue;
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}
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$enhancement = null;
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/*
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$commandRun->startIndex can be offset by few positions in the positive direction
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when some multibyte characters (e.g. emojis, but maybe also others) are used in the plain text video description.
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(probably some difference between php and javascript in handling multibyte characters)
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This loop should correct the position in most cases. It searches for the next word (determined by a set of boundary chars) with the expected length.
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Several safeguards ensure that the correct word is chosen. When a link can not be matched,
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everything will be discarded to prevent corrupting the description.
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Hashtags require a different set of boundary chars.
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*/
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$isHashtag = $commandMetadata->webPageType === 'WEB_PAGE_TYPE_BROWSE';
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$prevEnhancement = end($enhancements);
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$minPosition = $prevEnhancement === false ? 0 : $prevEnhancement['pos'] + $prevEnhancement['len'];
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$maxPosition = $descriptionContentLength - $maxPositionByStartIndex[$commandRun->startIndex];
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$position = min($commandRun->startIndex - $minPositionOffset, $maxPosition);
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while ($position >= $minPosition) {
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// The link display value can only ever include a new line at the end (which will be removed further below), never in between.
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$newLinePosition = mb_strpos($descriptionContent, "\n", $position);
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if ($newLinePosition !== false && $newLinePosition < $position + ($commandRun->length - 1)) {
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$position = $newLinePosition - ($commandRun->length - 1);
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continue;
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}
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$firstChar = mb_substr($descriptionContent, $position, 1);
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$boundaryStart = mb_substr($descriptionContent, $position - 1, 1);
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$boundaryEndIndex = $position + $commandRun->length;
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$boundaryEnd = mb_substr($descriptionContent, $boundaryEndIndex, 1);
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$boundaryStartIsValid = $position === 0 ||
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in_array($boundaryStart, $boundaryStartChars) ||
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($isHashtag && $firstChar === '#');
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$boundaryEndIsValid = $boundaryEndIndex === $descriptionContentLength ||
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in_array($boundaryEnd, $isHashtag ? $hashtagBoundaryEndChars : $boundaryEndChars);
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if ($boundaryStartIsValid && $boundaryEndIsValid) {
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$minPositionOffset = $commandRun->startIndex - $position;
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$enhancement = [
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'pos' => $position,
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'len' => $commandRun->length,
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];
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break;
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}
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$position--;
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}
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if (!isset($enhancement)) {
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$this->logger->debug(sprintf('Position %d cannot be corrected in "%s"', $commandRun->startIndex, substr($descriptionContent, 0, 50) . '...'));
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// Skip to prevent the description from becoming corrupted
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continue;
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}
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// $commandRun->length sometimes incorrectly includes the newline as last char
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$lastChar = mb_substr($descriptionContent, $enhancement['pos'] + $enhancement['len'] - 1, 1);
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if ($lastChar === "\n") {
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$enhancement['len'] -= 1;
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}
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$commandUrl = parse_url($commandMetadata->url);
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if ($commandUrl['path'] === '/redirect') {
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parse_str($commandUrl['query'], $commandUrlQuery);
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$enhancement['url'] = urldecode($commandUrlQuery['q']);
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} elseif (isset($commandUrl['host'])) {
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$enhancement['url'] = $commandMetadata->url;
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} else {
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$enhancement['url'] = $baseUrl . $commandMetadata->url;
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}
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$enhancements[] = $enhancement;
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}
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if (count($enhancements) !== count($commandRuns)) {
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// At least one link can not be matched. Discard everything to prevent corrupting the description.
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return [];
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}
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// Sort by position in descending order to be able to safely replace values
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return array_reverse($enhancements);
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}
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private function extractItemsFromXmlFeed($xml)
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{
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$this->feedName = $this->decodeTitle($xml->find('feed > title', 0)->plaintext);
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foreach ($xml->find('entry') as $element) {
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$videoId = str_replace('yt:video:', '', $element->find('id', 0)->plaintext);
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if (strpos($videoId, 'googleads') !== false) {
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continue;
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}
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$title = $this->decodeTitle($element->find('title', 0)->plaintext);
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$author = $element->find('name', 0)->plaintext;
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$desc = $element->find('media:description', 0)->innertext;
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$desc = htmlspecialchars($desc);
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$desc = nl2br($desc);
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$desc = preg_replace(self::URI_REGEX, '<a href="$1" target="_blank">$1</a> ', $desc);
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$time = strtotime($element->find('published', 0)->plaintext);
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$this->addItem($videoId, $title, $author, $desc, $time);
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}
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}
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private function fetch($url, bool $cache = false)
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{
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$header = ['Accept-Language: en-US'];
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$ttl = 86400 * 3; // 3d
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$stripNewlines = false;
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if ($cache) {
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return getSimpleHTMLDOMCached($url, $ttl, $header, [], true, true, DEFAULT_TARGET_CHARSET, $stripNewlines);
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}
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return getSimpleHTMLDOM($url, $header, [], true, true, DEFAULT_TARGET_CHARSET, $stripNewlines);
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}
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private function extractJsonFromHtml($html)
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{
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$scriptRegex = '/var ytInitialData = (.*?);<\/script>/';
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$result = preg_match($scriptRegex, $html, $matches);
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if (! $result) {
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$this->logger->debug('Could not find ytInitialData');
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return null;
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}
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$data = json_decode($matches[1]);
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return $data;
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}
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private function fetchItemsFromFromJsonData($jsonData)
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{
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$minimumDurationSeconds = ($this->getInput('duration_min') ?: -1) * 60;
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$maximumDurationSeconds = ($this->getInput('duration_max') ?: INF) * 60;
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foreach ($jsonData as $item) {
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$wrapper = null;
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if (isset($item->gridVideoRenderer)) {
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$wrapper = $item->gridVideoRenderer;
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} elseif (isset($item->videoRenderer)) {
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$wrapper = $item->videoRenderer;
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} elseif (isset($item->playlistVideoRenderer)) {
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$wrapper = $item->playlistVideoRenderer;
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} elseif (isset($item->richItemRenderer)) {
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$wrapper = $item->richItemRenderer->content->videoRenderer;
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} else {
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continue;
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}
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// 01:03:30 | 15:06 | 1:24
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$lengthText = $wrapper->lengthText->simpleText ?? null;
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// 6,875 views
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$viewCount = $wrapper->viewCountText->simpleText ?? null;
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// Dc645M8Het8
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$videoId = $wrapper->videoId;
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// Jumbo frames - transfer more data faster!
|
|
$title = $wrapper->title->runs[0]->text ?? $wrapper->title->accessibility->accessibilityData->label ?? null;
|
|
$author = null;
|
|
$description = $wrapper->descriptionSnippet->runs[0]->text ?? null;
|
|
// 5 days ago | 1 month ago
|
|
$publishedTimeText = $wrapper->publishedTimeText->simpleText ?? $wrapper->videoInfo->runs[2]->text ?? null;
|
|
$timestamp = null;
|
|
if ($publishedTimeText) {
|
|
try {
|
|
$publicationDate = new \DateTimeImmutable($publishedTimeText);
|
|
// Hard-code hour, minute and second
|
|
$publicationDate = $publicationDate->setTime(0, 0, 0);
|
|
$timestamp = $publicationDate->getTimestamp();
|
|
} catch (\Exception $e) {
|
|
}
|
|
}
|
|
|
|
$durationText = 0;
|
|
if ($lengthText) {
|
|
$durationText = $lengthText;
|
|
} else {
|
|
foreach ($wrapper->thumbnailOverlays as $overlay) {
|
|
if (isset($overlay->thumbnailOverlayTimeStatusRenderer)) {
|
|
$durationText = $overlay->thumbnailOverlayTimeStatusRenderer->text;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (is_string($durationText)) {
|
|
if (preg_match('/([\d]{1,2})\:([\d]{1,2})\:([\d]{2})/', $durationText)) {
|
|
$durationText = preg_replace('/([\d]{1,2})\:([\d]{1,2})\:([\d]{2})/', '$1:$2:$3', $durationText);
|
|
} else {
|
|
$durationText = preg_replace('/([\d]{1,2})\:([\d]{2})/', '00:$1:$2', $durationText);
|
|
}
|
|
sscanf($durationText, '%d:%d:%d', $hours, $minutes, $seconds);
|
|
$duration = $hours * 3600 + $minutes * 60 + $seconds;
|
|
if ($duration < $minimumDurationSeconds || $duration > $maximumDurationSeconds) {
|
|
continue;
|
|
}
|
|
}
|
|
if (!$description || !$timestamp) {
|
|
$this->fetchVideoDetails($videoId, $author, $description, $timestamp);
|
|
}
|
|
$this->addItem($videoId, $title, $author, $description, $timestamp);
|
|
if (count($this->items) >= 99) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
private function addItem($videoId, $title, $author, $description, $timestamp, $thumbnail = '')
|
|
{
|
|
$description = nl2br($description);
|
|
|
|
$item = [];
|
|
// This should probably be uid?
|
|
$item['id'] = $videoId;
|
|
$item['title'] = $title;
|
|
$item['author'] = $author ?? '';
|
|
$item['timestamp'] = $timestamp;
|
|
$item['uri'] = self::URI . '/watch?v=' . $videoId;
|
|
if (!$thumbnail) {
|
|
// Fallback to default thumbnail if there aren't any provided.
|
|
$thumbnail = '0';
|
|
}
|
|
$thumbnailUri = str_replace('/www.', '/img.', self::URI) . '/vi/' . $videoId . '/' . $thumbnail . '.jpg';
|
|
$item['content'] = sprintf('<a href="%s"><img src="%s" /></a><br />%s', $item['uri'], $thumbnailUri, $description);
|
|
$this->items[] = $item;
|
|
}
|
|
|
|
private function decodeTitle($title)
|
|
{
|
|
// convert both Ӓ and " to UTF-8
|
|
return html_entity_decode($title, ENT_QUOTES, 'UTF-8');
|
|
}
|
|
|
|
public function getURI()
|
|
{
|
|
if (!is_null($this->getInput('p'))) {
|
|
return static::URI . '/playlist?list=' . $this->getInput('p');
|
|
} elseif ($this->feeduri) {
|
|
return $this->feeduri;
|
|
}
|
|
|
|
return parent::getURI();
|
|
}
|
|
|
|
public function getName()
|
|
{
|
|
switch ($this->queriedContext) {
|
|
case 'By username':
|
|
case 'By channel id':
|
|
case 'By custom name':
|
|
case 'By playlist Id':
|
|
case 'Search result':
|
|
return htmlspecialchars_decode($this->feedName) . ' - YouTube';
|
|
default:
|
|
return parent::getName();
|
|
}
|
|
}
|
|
|
|
public function getIcon()
|
|
{
|
|
if (empty($this->feedIconUrl)) {
|
|
return parent::getIcon();
|
|
} else {
|
|
return $this->feedIconUrl;
|
|
}
|
|
}
|
|
}
|