/** 
 * get_urls
 * 
 * Public method pull to gather all public URLs
 * 
 * @since 7.3
 * @access public
 * @author Kevin Pirnie <me@kpirnie.com>
 * @package Kevin's Framework
 * 
 * @return array Returns an array of URLs
 * 
*/
public function get_urls( ) : array {

	// see if we've already got this in cache
	$_urls = wp_cache_get( "kfw_urls", "kfw_urls" );

	// if we have it in our cache already
	if( $_urls ) {

		// return it
		return $_urls;

	// we don't    
	} else {

		// hold our return array
		$_ret = array( );

		// all we're interested in is publicly accessible posts/pages
		$_post_types = get_post_types( array( 'public' => true, ), 'names' );

		// setup some arguments
        $_args = array( 
            'no_found_rows' => true, 
            'update_post_meta_cache' => false, 
            'update_post_term_cache' => false, 
            'fields' => 'ids',
            'post_type' => $_post_types, 
            'posts_per_page' => -1, 
            'post_status' => 'publish',
        );

		// our query for all public posts
		$_qry = new WP_Query( $_args );

		// fire up the recordset
		$_rs = $_qry -> get_posts( );

		// make sure we have a recordset
		if( $_rs ) {

			// loop and and populate the URL array with the posts permalinks
            foreach( $_rs as $_id ) {

                // add it to the return array
                $_ret[] = get_permalink( $_id );

            }

		}

		// cache it for 1 hour
		wp_cache_add( "kfw_urls", $_ret, "kfw_urls", HOUR_IN_SECONDS );

		// return the array
		return $_ret;
		
	}

}