Crunchify_Add_Gist_Github_Shortcode_To_WordPress

<?php

/**
 * 
 * Example: https://gist.github.com/Crunchify/1fad3e32630de777dd0d2183ae41e80f
 * Usage:
 * [gist]1fad3e32630de777dd0d2183ae41e80f[/gist]
 * [gist id="1fad3e32630de777dd0d2183ae41e80f" /]
 *
 * If a gist has multiple files you can select one  
 * [gist id="1fad3e32630de777dd0d2183ae41e80f" file="file-name" /]
 */
 
function crunchify_add_gist_github_shortcode( $atts, $content = NULL ) {
   extract( shortcode_atts( array(
			'id' => '',
			'file' => '',
		), $atts ) );
   if (function_exists( 'is_amp_endpoint' ) && is_amp_endpoint()) {
		return sprintf('<amp-gist data-gistid="%s" %s layout="fixed-height" height="250"></amp-gist>', 
			$id ? $id : trim(esc_attr($content)), 
			$file ? 'data-file="' . esc_attr( $file ) . '"' : ''
		);
	} else {
   		return sprintf('<script src="https://gist.github.com/%s.js%s"></script>', 
   			$id ? $id : trim(esc_attr($content)) , 
   			$file ? '?file=' . esc_attr( $file ) : '' 
   		);
   }
}
add_shortcode('gist', 'crunchify_add_gist_github_shortcode');

?>