<?php

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/**

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* Twitch.tv shortcode

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*

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* Examples:

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* [twitchtv url='https://www.twitch.tv/paperbat' height='378' width='620' autoplay='false']

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* [twitchtv url='https://www.twitch.tv/paperbat/b/323486192' height='378' width='620' autoplay='false']

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*

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* @package automattic/jetpack

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*/

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if ( ! defined( 'ABSPATH' ) ) {

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exit( 0 );

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}

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/**

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* (Live URL) https://www.twitch.tv/paperbat

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*

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* <iframe src="https://player.twitch.tv/?autoplay=false&#038;muted=false&#038;channel=paperbat" width="620" height="378" frameborder="0" scrolling="no" allowfullscreen></iframe>

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*

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* (Archive URL) https://www.twitch.tv/paperbat/v/323486192

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*

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* <iframe src="https://player.twitch.tv/?autoplay=false&#038;muted=false&#038;video=v323486192" width="620" height="378" frameborder="0" scrolling="no" allowfullscreen></iframe>

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*

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* @param array $atts User supplied shortcode arguments.

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*

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* @return string HTML output of the shortcode.

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*/

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function wpcom_twitchtv_shortcode( $atts ) {

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$attr = shortcode_atts(

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array(

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'height' => 378,

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'width' => 620,

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'url' => '',

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'autoplay' => 'false',

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'muted' => 'false',

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'time' => null,

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),

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$atts

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);

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if ( empty( $attr['url'] ) ) {

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return '<!-- Invalid twitchtv URL -->';

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}

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preg_match( '|^https?://www.twitch.tv/([^/?]+)(/v/(\d+))?|i', $attr['url'], $match );

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$url_args = array(

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'autoplay' => ( false !== $attr['autoplay'] && 'false' !== $attr['autoplay'] ) ? 'true' : 'false',

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'muted' => ( false !== $attr['muted'] && 'false' !== $attr['muted'] ) ? 'true' : 'false',

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'time' => $attr['time'],

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);

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$width = (int) $attr['width'];

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$height = (int) $attr['height'];

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$user_id = $match[1];

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$video_id = 0;

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if ( ! empty( $match[3] ) ) {

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$video_id = (int) $match[3];

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}

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do_action( 'jetpack_bump_stats_extras', 'twitchtv', 'shortcode' );

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if ( $video_id > 0 ) {

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$url_args['video'] = 'v' . $video_id;

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} else {

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$url_args['channel'] = $user_id;

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}

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// See https://discuss.dev.twitch.tv/t/twitch-embedded-player-updates-in-2020/23956.

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// phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized

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$url_args['parent'] = isset( $_SERVER['HTTP_HOST'] )

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? rawurlencode( wp_unslash( $_SERVER['HTTP_HOST'] ) ) // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized

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: '';

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$url = add_query_arg( $url_args, 'https://player.twitch.tv/' );

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return sprintf(

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'<iframe src="%s" width="%d" height="%d" frameborder="0" scrolling="no" allowfullscreen sandbox="allow-popups allow-scripts allow-same-origin allow-presentation"></iframe>',

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esc_url( $url ),

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esc_attr( $width ),

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esc_attr( $height )

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);

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}

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add_shortcode( 'twitch', 'wpcom_twitchtv_shortcode' );

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add_shortcode( 'twitchtv', 'wpcom_twitchtv_shortcode' );

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