<?php

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/**

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* Mixcloud embeds

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*

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* Examples:

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* [mixcloud MalibuRum/play-6-kissy-sellouts-winter-sun-house-party-mix/ /]

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* [mixcloud MalibuRum/play-6-kissy-sellouts-winter-sun-house-party-mix/ width=640 height=480 /]

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* [mixcloud http://www.mixcloud.com/MalibuRum/play-6-kissy-sellouts-winter-sun-house-party-mix/ /]

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* [mixcloud http://www.mixcloud.com/MalibuRum/play-6-kissy-sellouts-winter-sun-house-party-mix/ width=640 height=480 /]

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* [mixcloud]http://www.mixcloud.com/MalibuRum/play-6-kissy-sellouts-winter-sun-house-party-mix/[/mixcloud]

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* [mixcloud]MalibuRum/play-6-kissy-sellouts-winter-sun-house-party-mix/[/mixcloud]

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* [mixcloud http://www.mixcloud.com/mat/playlists/classics/ width=660 height=208 hide_cover=1 hide_tracklist=1]

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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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* Register oEmbed provider

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* Example URL: http://app.mixcloud.com/oembed/?url=http://www.mixcloud.com/MalibuRum/play-6-kissy-sellouts-winter-sun-house-party-mix/

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*/

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wp_oembed_add_provider( '#https?://(?:www\.)?mixcloud\.com/\S*#i', 'https://app.mixcloud.com/oembed/', true );

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/**

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* Register mixcloud shortcode.

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*

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* @param array $atts Shortcode atttributes.

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* @param string $content Post content.

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*/

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function mixcloud_shortcode( $atts, $content = null ) {

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if ( empty( $atts[0] ) && empty( $content ) ) {

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return '<!-- mixcloud error: invalid mixcloud resource -->';

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}

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$regular_expression = '/((?<=mixcloud\.com\/)[\w\-\/]+$)|(^[\w\-\/]+$)/i';

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preg_match( $regular_expression, $content, $match );

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if ( ! empty( $match ) ) {

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$resource_id = trim( $match[0] );

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} else {

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preg_match( $regular_expression, $atts[0], $match );

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if ( ! empty( $match ) ) {

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$resource_id = trim( $match[0] );

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}

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}

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if ( empty( $resource_id ) ) {

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return '<!-- mixcloud error: invalid mixcloud resource -->';

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}

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$mixcloud_url = 'https://mixcloud.com/' . $resource_id;

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$atts = shortcode_atts(

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array(

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'width' => false,

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'height' => false,

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'color' => false,

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'light' => false,

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'dark' => false,

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'hide_tracklist' => false,

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'hide_cover' => false,

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'mini' => false,

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'hide_followers' => false,

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'hide_artwork' => false,

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),

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$atts

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);

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// remove falsey values.

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$atts = array_filter( $atts );

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$query_args = array( 'url' => $mixcloud_url );

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$query_args = array_merge( $query_args, $atts );

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$url = add_query_arg( urlencode_deep( $query_args ), 'https://app.mixcloud.com/oembed/' );

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$mixcloud_response = wp_remote_get( $url, array( 'redirection' => 0 ) );

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if ( is_wp_error( $mixcloud_response ) || 200 !== $mixcloud_response['response']['code'] || empty( $mixcloud_response['body'] ) ) {

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return '<!-- mixcloud error: invalid mixcloud resource -->';

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}

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$response_body = json_decode( $mixcloud_response['body'] );

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$html = $response_body->html;

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preg_match( '/sandbox="([^"]*)"/', $html, $matches );

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if ( empty( $matches ) ) { // Mixcloud doesn't use sandbox attribute.

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$html = preg_replace( '/>/', ' sandbox="allow-popups allow-scripts allow-same-origin allow-presentation">', $html, 1 );

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} else { // Mixcloud uses sandbox attribute.

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$allowed_values = array();

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// Here we make sure that these string are not repeated in the sandbox attribute.

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$attrs = array( 'allow-popups', 'allow-scripts', 'allow-same-origin', 'allow-presentation' );

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foreach ( $attrs as $attr ) {

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if ( ! str_contains( $matches[1], $attr ) ) {

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$allowed_values[] = $attr;

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}

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}

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$sandbox_value = $matches[1] . ' ' . implode( ' ', $allowed_values );

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$html = preg_replace( '/sandbox="([^"]*)"/', "sandbox=\"$sandbox_value\"", $html );

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}

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return $html;

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}

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add_shortcode( 'mixcloud', 'mixcloud_shortcode' );

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