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<?php
/**
* Spotify shortcode.
*
* Usage:
* [spotify id="spotify:track:4bz7uB4edifWKJXSDxwHcs" width="400" height="100"]
*
* @package Jetpack
*/
if ( ! shortcode_exists( 'spotify' ) ) {
add_shortcode( 'spotify', 'jetpack_spotify_shortcode' );
if ( get_option( 'embed_autourls' ) ) {
// If user enabled autourls, also convert syntax like spotify:track:4bz7uB4edifWKJXSDxwHcs.
add_filter( 'the_content', 'jetpack_spotify_embed_ids', 7 );
}
}
/**
* Parse shortcode arguments and render its output.
*
* @since 4.5.0
*
* @param array $atts Shortcode attributes.
* @param string $content Post Content.
*
* @return string
*/
function jetpack_spotify_shortcode( $atts = array(), $content = '' ) {
if ( ! empty( $content ) ) {
$id = $content;
} elseif ( ! empty( $atts['id'] ) ) {
$id = $atts['id'];
} elseif ( ! empty( $atts[0] ) ) {
$id = $atts[0];
} else {
return '<!-- Missing Spotify ID -->';
}
if ( empty( $atts['width'] ) ) {
$atts['width'] = 300;
}
if ( empty( $atts['height'] ) ) {
$atts['height'] = 380;
}
$atts['width'] = (int) $atts['width'];
$atts['height'] = (int) $atts['height'];
// Spotify accepts both URLs and their Spotify ID format, so let them sort it out and validate.
$embed_url = add_query_arg( 'uri', rawurlencode( $id ), 'https://embed.spotify.com/' );
return '<iframe src="' . esc_url( $embed_url ) . '" style="display:block; margin:0 auto; width:' . esc_attr( $atts['width'] ) . 'px; height:' . esc_attr( $atts['height'] ) . 'px;" frameborder="0" allowtransparency="true"></iframe>';
}
/**
* Turn text like this on it's own line into an embed: spotify:track:4bz7uB4edifWKJXSDxwHcs
* The core WordPress embed functionality only works with URLs
* Modified version of WP_Embed::autoembed()
*
* @since 4.5.0
*
* @param string $content Post content.
*
* @return string
*/
function jetpack_spotify_embed_ids( $content ) {
$textarr = wp_html_split( $content );
foreach ( $textarr as &$element ) {
if ( '' === $element || '<' === $element[0] ) {
continue;
}
if ( substr( ltrim( $element ), 0, 8 ) !== 'spotify:' ) {
continue;
}
$element = preg_replace_callback( '|^\s*(spotify:[^\s"]+:[^\s"]+)\s*$|im', 'jetpack_spotify_embed_ids_callback', $element );
}
return implode( '', $textarr );
}
/**
* Call shortcode with ID provided by matching pattern.
*
* @since 4.5.0
*
* @param array $matches Array of matches for Spofify links.
*
* @return string
*/
function jetpack_spotify_embed_ids_callback( $matches ) {
return "\n" . jetpack_spotify_shortcode( array(), $matches[1] ) . "\n";
}
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