<?php

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/**

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* Youtube.php

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*

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* @package Embera

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* @author Michael Pratt <yo@michael-pratt.com>

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* @link http://www.michael-pratt.com/

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*

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* For the full copyright and license information, please view the LICENSE

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* file that was distributed with this source code.

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*/

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namespace EmbedPress\Providers;

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use Embera\Provider\ProviderAdapter;

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use Embera\Provider\ProviderInterface;

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use Embera\Url;

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/**

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* youtube.com Provider

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* @link https://youtube.com

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* @link https://youtube-eng.googleblog.com/2009/10/oembed-support_9.html

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*/

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class Youtube extends ProviderAdapter implements ProviderInterface {

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/** inline {@inheritdoc} */

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protected $shouldSendRequest = false;

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public static $curltimeout = 30;

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/** inline {@inheritdoc} */

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protected $endpoint = 'https://www.youtube.com/oembed?format=json&scheme=https';

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protected static $channel_endpoint = 'https://www.googleapis.com/youtube/v3/';

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/** @var array Array with allowed params for the current Provider */

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protected $allowedParams = [ 'maxwidth', 'maxheight', 'pagesize', 'thumbnail', 'gallery', 'hideprivate', 'columns', 'ispagination', 'gapbetweenvideos' ];

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/** inline {@inheritdoc} */

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protected static $hosts = [

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'm.youtube.com', 'youtube.com', 'youtu.be',

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];

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/** inline {@inheritdoc} */

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protected $httpsSupport = true;

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public function getAllowedParams(){

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return $this->allowedParams;

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}

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/** inline {@inheritdoc} */

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public function validateUrl(Url $url) {

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return (bool) (preg_match('~\/channel\/|\/c\/|\/user\/|\/@\w+|(?:https?:\/\/)?(?:www\.)?(?:youtube.com\/)(\w+)[^?\/]*$~i', (string) $url));

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}

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public function validateTYLiveUrl($url) {

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return (bool) (preg_match('~(?:https?:\/\/)?(?:www\.)?(?:youtube.com\/(?:channel|c|user)\/\w+\/live|@\w+\/live)~i', (string) $url));

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}

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/** inline {@inheritdoc} */

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public function normalizeUrl(Url $url) {

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return $url;

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}

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public function isChannel($url = null) {

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if (empty($url)) {

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$url = $this->url;

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}

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$channel = $this->getChannel($url);

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return !empty($channel['id']);

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}

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public function getChannel($url = null) {

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$channelId = 'unknown_id'; // temporarily assigned a placeholder value for demonstration purposes

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if (empty($url)) {

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$url = $this->url;

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}

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preg_match('~\/(channel|c|user)\/(.+)~i', (string) $url, $matches);

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if(empty($matches[1])){

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preg_match('~(?:https?:\/\/)?(?:www\.)?(?:youtube.com\/)(\w+)[^?\/]*$~i', (string) $url, $matches);

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if(!empty($matches[1])){

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return [

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"type" => 'user',

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"id" => $matches[1],

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];

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}

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}

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// $channel___id = $this->get_channel_id_by_handler('adin');

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// echo 'akash';

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// print_r($channel___id); die;

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if(empty($matches[1])){

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preg_match('~\/(@)(\w+)~i', (string) $url, $matches);

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if(!empty($matches[1])){

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if(!empty($this->get_youtube_handler($this->url))){

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if(!empty($this->get_channel_id_by_handler($this->get_youtube_handler($this->url)))){

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$channelId = $this->get_channel_id_by_handler($this->get_youtube_handler($this->url));

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}

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}

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return [

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"type" => 'user',

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"id" => $channelId,

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];

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}

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}

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return [

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"type" => isset($matches[1]) ? $matches[1] : '',

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"id" => isset($matches[2]) ? $matches[2] : '',

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];

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}

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/** inline {@inheritdoc} */

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public function getEndpoint() {

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if ($this->isChannel()) {

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$apiEndpoint = 'https://www.googleapis.com/youtube/v3/channels';

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return $apiEndpoint;

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}

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return (string) $this->endpoint;

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}

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protected static function get_api_key() {

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$settings = (array) get_option(EMBEDPRESS_PLG_NAME . ':youtube', []);

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return !empty($settings['api_key']) ? $settings['api_key'] : '';

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}

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protected static function get_pagesize() {

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$settings = (array) get_option(EMBEDPRESS_PLG_NAME . ':youtube', []);

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return !empty($settings['pagesize']) ? $settings['pagesize'] : '';

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}

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/** inline {@inheritdoc} */

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public function getParams() {

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$params = parent::getParams();

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if ($this->isChannel() && self::get_api_key()) {

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$channel = $this->getChannel();

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$params['part'] = 'contentDetails,snippet';

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$params['key'] = self::get_api_key();

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if ($channel['type'] == 'c') {

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$params['forUsername'] = $channel['id'];

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} else {

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$params['id'] = $channel['id'];

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}

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unset($params['url']);

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}

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return $params;

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}

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/**

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* Builds a valid Oembed query string based on the given parameters,

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* Since this method uses the http_build_query function, there is no

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* need to pass urlencoded parameters, http_build_query already does

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* this for us.

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*

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* @param string $endpoint The Url to the Oembed endpoint

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* @param array $params Parameters for the query string

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* @return string

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*/

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protected function constructUrl($endpoint, array $params = array())

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{

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$endpoint = self::$channel_endpoint . $endpoint;

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return $endpoint . ((strpos($endpoint, '?') === false) ? '?' : '&') . http_build_query(array_filter($params));

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}

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public function getStaticResponse() {

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$results = [

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"title" => "",

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"type" => "video",

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'provider_name' => $this->getProviderName(),

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"provider_url" => "https://www.youtube.com/",

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'html' => '',

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];

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$params = $this->getParams();

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if (preg_match("/^https?:\/\/(?:www\.)?youtube\.com\/channel\/([\w-]+)\/live$/", $this->url, $matches) || $this->validateTYLiveUrl($this->url)) {

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if(!empty($matches[1])){

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$channelId = $matches[1];

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}

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if(!empty($this->get_youtube_handler($this->url))){

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if(!empty($this->get_channel_id_by_handler($this->get_youtube_handler($this->url)))){

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$channelId = $this->get_channel_id_by_handler($this->get_youtube_handler($this->url));

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}

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}

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$embedUrl = 'https://www.youtube.com/embed/live_stream?channel='.$channelId.'&feature=oembed';

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$attr = [];

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$attr[] = 'width="'.esc_attr($params['maxheight']).'"';

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$attr[] = 'height="'.esc_attr($params['maxheight']).'";';

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$attr[] = 'src="' . esc_url($embedUrl) . '"';

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$attr[] = 'frameborder="0"';

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$attr[] = 'allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture"';

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$attr[] = 'allowfullscreen';

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$results['html'] = '<iframe ' . implode(' ', $attr) . '></iframe>';

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}

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else if($this->isChannel()){

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$channel = $this->getChannelGallery();

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$results = array_merge($results, $channel);

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}

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return $results;

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}

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public function getChannelPlaylist(){

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$result = [

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"playlistID" => '',

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"title" => '',

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];

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$channel = $this->getChannel();

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$channel_url = $this->constructUrl('channels', $this->getParams());

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$transient_key = 'ep_embed_youtube_channel_playlist_id_' . md5($channel_url);

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$jsonResult = get_transient($transient_key);

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if(!empty($jsonResult)){

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return $jsonResult;

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}

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if($channel['type'] == 'user' || $channel['type'] == 'c'){

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$this->getChannelIDbyUsername();

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$channel_url = $this->constructUrl('channels', $this->getParams());

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}

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if (empty(self::get_api_key())) {

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$result['error'] = true;

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$result['html'] = self::get_api_key_error_message();

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return $result;

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}

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$apiResult = wp_remote_get($channel_url, array('timeout' => self::$curltimeout));

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if (is_wp_error($apiResult)) {

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$result['error'] = true;

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$result['html'] = self::clean_api_error_html($apiResult->get_error_message(), true);

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set_transient($transient_key, $result, 10);

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return $result;

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}

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$jsonResult = json_decode($apiResult['body']);

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if (isset($jsonResult->error)) {

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$result['error'] = true;

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if (isset($jsonResult->error->message)) {

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$result['html'] = self::clean_api_error_html($jsonResult->error->message, true);

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}

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else{

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$result['html'] = self::clean_api_error_html(__('Sorry, there may be an issue with your YouTube API key.', 'embedpress'));

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}

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set_transient($transient_key, $result, MINUTE_IN_SECONDS);

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return $result;

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}

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elseif(!empty($jsonResult->items[0]->contentDetails->relatedPlaylists->uploads)){

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$result['playlistID'] = $jsonResult->items[0]->contentDetails->relatedPlaylists->uploads;

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$result['title'] = isset($jsonResult->items[0]->snippet->title) ? $jsonResult->items[0]->snippet->title : '';

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set_transient($transient_key, $result, DAY_IN_SECONDS);

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}

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return $result;

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}

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public function get_youtube_handler($url){

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// preg_match('/^https:\/\/www.youtube.com\/@(.+)\/live$/i', $url, $matches);

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preg_match('/^https:\/\/www.youtube.com\/@([^\/?]+)/i', $url, $matches);

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$handle_name = '';

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if(!empty($matches[1])){

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$handle_name = $matches[1];

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}

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return $handle_name;

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}

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public function getChannelIDbyUsername(){

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$url = $this->getUrl();

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$apiResult = wp_remote_get($url, array('timeout' => self::$curltimeout));

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if (!is_wp_error($apiResult)) {

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$channel_html = $apiResult['body'];

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preg_match("/<meta\s+itemprop=[\"']channelId[\"']\s+content=[\"'](.*?)[\"']\/?>/", $channel_html, $matches);

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if(!empty($matches[1])){

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$url = "https://www.youtube.com/channel/{$matches[1]}";

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$this->url = $this->normalizeUrl(new Url($url));

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}

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}

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}

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public function get_channel_id_by_handler($handle)

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{

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$transient_key = 'channel_id_' . md5($handle);

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$channel_id = get_transient($transient_key);

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if (false === $channel_id) {

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$ch = curl_init();

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$channel_handle = "https://www.youtube.com/@{$handle}";

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curl_setopt($ch, CURLOPT_URL, $channel_handle);

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curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

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$response = curl_exec($ch);

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if (curl_errno($ch)) {

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return 'cURL error: ' . curl_error($ch);

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}

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curl_close($ch);

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$pattern = '/(<link rel="canonical" href="https:\/\/www\.youtube\.com\/channel\/)(.{1,50})(">)/';

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if (preg_match($pattern, $response, $matches)) {

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$channel_id = $matches[2];

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set_transient($transient_key, $channel_id, 30 * DAY_IN_SECONDS);

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return $channel_id;

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} else {

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return "Not a channel URL";

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}

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} else {

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return $channel_id;

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}

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}

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/** inline {@inheritdoc} */

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public function getChannelGallery() {

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$response = [];

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$channel = $this->getChannelPlaylist();

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if(!empty($channel['error'])){

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return $channel;

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}

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if (!empty($channel["playlistID"])) {

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$params = $this->getParams();

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$the_playlist_id = $channel["playlistID"];

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$rel = 'https://www.youtube.com/embed?listType=playlist&list=' . esc_attr($the_playlist_id);

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$title = $channel['title'];

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$main_iframe = "";

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$gallery_args = [

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'playlistId' => $the_playlist_id,

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];

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if(!empty($params['pagesize'])){

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$gallery_args['pagesize'] = $params['pagesize'];

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}

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$gallery = self::get_gallery_page($gallery_args);

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if (!empty($gallery->first_vid)) {

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$rel = "https://www.youtube.com/embed/{$gallery->first_vid}?feature=oembed";

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$main_iframe = "<div class='ep-first-video'><iframe width='{$params['maxwidth']}' height='{$params['maxheight']}' src='$rel' frameborder='0' allow='accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture' allowfullscreen title='{$title}'></iframe></div>";

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}

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if($gallery->html && $this->validateTYLiveUrl($this->getUrl())){

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$styles = self::styles($params, $this->getUrl());

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return [

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"title" => $title,

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"html" => "<div class='ep-player-wrap'>$main_iframe $styles</div>",

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];

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}

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if($gallery->html){

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$styles = self::styles($params, $this->getUrl());

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return [

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"title" => $title,

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"html" => "<div class='ep-player-wrap'>$main_iframe {$gallery->html} $styles</div>",

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];

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}

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}

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elseif ($this->isChannel() && empty(self::get_api_key()) && current_user_can('manage_options')) {

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return [

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"html" => "<div class='ep-player-wrap'>" . __('Please enter your YouTube API key to embed YouTube Channel.', 'embedpress') . "</div>",

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];

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}

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return $response;

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}

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/**

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* Undocumented function

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*

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* @param array $options

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* @return object

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*/

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public static function get_gallery_page($options) {

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$nextPageToken = '';

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$prevPageToken = '';

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$gallobj = new \stdClass();

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$options = wp_parse_args($options, [

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'playlistId' => '',

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'pageToken' => '',

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'pagesize' => self::get_pagesize() ? self::get_pagesize() : 6,

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'currentpage' => '',

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'columns' => 3,

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'thumbnail' => 'medium',

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'gallery' => true,

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'autonext' => true,

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'thumbplay' => true,

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'apiKey' => self::get_api_key(),

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'hideprivate' => '',

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]);

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$options['pagesize'] = $options['pagesize'] > 50 ? 50 : $options['pagesize'];

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$options['pagesize'] = $options['pagesize'] < 1 ? 1 : $options['pagesize'];

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if (empty($options['apiKey'])) {

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$gallobj->html = self::get_api_key_error_message();

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return $gallobj;

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}

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$apiEndpoint = 'https://www.googleapis.com/youtube/v3/playlistItems?part=snippet,status&playlistId=' . $options['playlistId']

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. '&maxResults=' . $options['pagesize']

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. '&key=' . $options['apiKey'];

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if ($options['pageToken'] != null) {

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$apiEndpoint .= '&pageToken=' . $options['pageToken'];

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}

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$transient_key = 'ep_embed_youtube_channel_' . md5($apiEndpoint);

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$gallobj->transient_key = $transient_key;

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$jsonResult = get_transient($transient_key);

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if (empty($jsonResult)) {

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$apiResult = wp_remote_get($apiEndpoint, array('timeout' => self::$curltimeout));

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if (is_wp_error($apiResult)) {

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$gallobj->html = self::clean_api_error_html($apiResult->get_error_message(), true);

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return $gallobj;

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}

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$jsonResult = json_decode($apiResult['body']);

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if (empty($jsonResult->error)) {

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set_transient($transient_key, $jsonResult, MINUTE_IN_SECONDS * 20);

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}

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else{

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set_transient($transient_key, $jsonResult, 10);

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}

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}

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if (isset($jsonResult->error)) {

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if(!empty($jsonResult->error->errors[0]->reason) && $jsonResult->error->errors[0]->reason == 'playlistNotFound'){

[436] Fix | Delete

$gallobj->html = self::clean_api_error_html(__('There is nothing on the playlist.', 'embedpress'));

[437] Fix | Delete

return $gallobj;

[438] Fix | Delete

}

[439] Fix | Delete

if (isset($jsonResult->error->message)) {

[440] Fix | Delete

$gallobj->html = self::clean_api_error_html($jsonResult->error->message);

[441] Fix | Delete

return $gallobj;

[442] Fix | Delete

}

[443] Fix | Delete

$gallobj->html = self::clean_api_error_html(__('Sorry, there may be an issue with your YouTube API key.', 'embedpress'));

[444] Fix | Delete

return $gallobj;

[445] Fix | Delete

}

[446] Fix | Delete

[447] Fix | Delete

[448] Fix | Delete

[449] Fix | Delete

$resultsPerPage = $jsonResult->pageInfo->resultsPerPage;

[450] Fix | Delete

$totalResults = $jsonResult->pageInfo->totalResults;

[451] Fix | Delete

$totalPages = ceil($totalResults / $resultsPerPage);

[452] Fix | Delete

if (isset($jsonResult->nextPageToken)) {

[453] Fix | Delete

$nextPageToken = $jsonResult->nextPageToken;

[454] Fix | Delete

}

[455] Fix | Delete

[456] Fix | Delete

if (isset($jsonResult->prevPageToken)) {

[457] Fix | Delete

$prevPageToken = $jsonResult->prevPageToken;

[458] Fix | Delete

}

[459] Fix | Delete

[460] Fix | Delete

[461] Fix | Delete

if (!empty($jsonResult->items) && is_array($jsonResult->items)) :

[462] Fix | Delete

if($options['gallery'] === "false"){

[463] Fix | Delete

$gallobj->html = "";

[464] Fix | Delete

if(count($jsonResult->items) === 1){

[465] Fix | Delete

$gallobj->first_vid = self::get_id($jsonResult->items[0]);

[466] Fix | Delete

}

[467] Fix | Delete

return $gallobj;

[468] Fix | Delete

}

[469] Fix | Delete

[470] Fix | Delete

if(count($jsonResult->items) === 1 && empty($nextPageToken) && empty($prevPageToken)){

[471] Fix | Delete

$gallobj->first_vid = self::get_id($jsonResult->items[0]);

[472] Fix | Delete

$gallobj->html = "";

[473] Fix | Delete

return $gallobj;

[474] Fix | Delete

}

[475] Fix | Delete

[476] Fix | Delete

if (strpos($options['playlistId'], 'UU') === 0) {

[477] Fix | Delete

// sort only channels

[478] Fix | Delete

usort($jsonResult->items, array(self::class, 'compare_vid_date')); // sorts in place

[479] Fix | Delete

}

[480] Fix | Delete

[481] Fix | Delete

[482] Fix | Delete

ob_start();

[483] Fix | Delete

?>

[484] Fix | Delete

<div class="ep-youtube__content__block" data-unique-id="<?php echo wp_rand(); ?>">

[485] Fix | Delete

<div class="youtube__content__body">

[486] Fix | Delete

<div class="content__wrap">

[487] Fix | Delete

<?php foreach ($jsonResult->items as $item) : ?>

[488] Fix | Delete

<?php

[489] Fix | Delete

$privacyStatus = isset($item->status->privacyStatus) ? $item->status->privacyStatus : null;

[490] Fix | Delete

$thumbnail = self::get_thumbnail_url($item, $options['thumbnail'], $privacyStatus);

[491] Fix | Delete

$vid = self::get_id($item);

[492] Fix | Delete

if (empty($gallobj->first_vid)) {

[493] Fix | Delete

$gallobj->first_vid = $vid;

[494] Fix | Delete

}

[495] Fix | Delete

if ($privacyStatus == 'private' && $options['hideprivate']) {

[496] Fix | Delete

continue;

[497] Fix | Delete

}

[498] Fix | Delete

?>

[499] Fix | Delete