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<?php

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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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(defined('ABSPATH') && defined('EMBEDPRESS_IS_LOADED')) or die("No direct script access allowed.");

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/**

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* Entity responsible to support Twitch embeds.

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* @package EmbedPress

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* @subpackage EmbedPress/Providers

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* @author EmbedPress <help@embedpress.com>

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* @license GPLv3 or later

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* @since 1.5.0

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class Twitch extends ProviderAdapter implements ProviderInterface

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{

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/**

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* The regex which identifies Twitch URLs.

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* @since 1.5.0

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* @access private

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* @var string

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private $urlRegexPattern = '/http[s]?:\/\/(?:www\.|clips\.)twitch\.tv\/([0-9a-zA-Z\-\_]+)\/?(chat\/?$|[0-9a-z\-\_]*)?/';

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/**

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* Method that verifies if the embed URL belongs to Twitch.

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* @param Url $url

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* @return boolean

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* @since 1.5.0

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public function validateUrl(Url $url)

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{

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return (bool) preg_match($this->urlRegexPattern, $this->url);

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}

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/**

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* Return the type of the embed based on the URL.

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* @param $url

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* @return string

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protected function getType($url)

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{

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if (stristr($url, 'clips.twitch.tv')) {

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return 'clip';

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}

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if (stristr($url, '/videos/')) {

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return 'video';

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}

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if (preg_match('#/chat$#', $url)) {

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return 'chat';

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}

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return 'channel';

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}

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/**

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* This method fakes an Oembed response.

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* @since 1.5.0

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* @return array

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public function fakeResponse()

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{

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$url = $this->getUrl();

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$providerUrl = 'https://twitch.tv';

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$src = '';

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if (preg_match("{$this->urlRegexPattern}i", $url, $matches)) {

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$channelName = $matches[1];

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$type = $this->getType($url);

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// Clip, channel, chat, collection, or video?

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switch ($type) {

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case 'clip':

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$src = 'https://clips.twitch.tv/embed?clip=' . $channelName . '&autoplay=false';

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$attrs = 'scrolling="no" frameborder="0" allowfullscreen="true"';

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break;

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case 'video':

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$channelName = $matches[2];

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$src = 'https://player.twitch.tv/?video=' . $channelName;

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$attrs = 'scrolling="no" frameborder="0" allowfullscreen="true"';

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break;

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case 'channel':

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$src = 'https://player.twitch.tv/?channel=' . $channelName;

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$attrs = 'scrolling="no" frameborder="0" allowfullscreen="true"';

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break;

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case 'chat':

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$src = 'http://www.twitch.tv/embed/' . $channelName . '/chat';

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$attrs = 'scrolling="yes" frameborder="0" allowfullscreen="true" id="' . $channelName . '"';

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break;

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}

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$width = isset( $this->config['maxwidth']) ? $this->config['maxwidth']: 800;

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$height = isset( $this->config['maxheight']) ? $this->config['maxheight']: 400;

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$pars_url = wp_parse_url(get_site_url());

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$src = !empty($pars_url['host'])?$src.'&parent='.$pars_url['host']:$src;

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$html = '<iframe src="' . esc_url($src) . '" height="'.esc_attr($height).'" width="'.esc_attr($width).'" ' . $attrs . '></iframe>';

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$response = [

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'type' => $type,

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'content_id' => $channelName,

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'provider_name' => 'Twitch',

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'provider_url' => $providerUrl,

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'url' => $url,

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'html' => $html,

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];

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} else {

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$response = [];

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}

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return $response;

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}

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/** inline @inheritDoc */

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public function modifyResponse( array $response = [])

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{

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return $this->fakeResponse();

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}

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}

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