WooCommerce URL Rewrites for Multiple Taxonomies

/*
 *  Add rewrite Rules for WooCommerce product-category|product-tag + attribute taxonomy
 *  ex: site.com/product-category/bacon/color/red ,etc
 */

function mv_add_rewrite_rule(){
    global $woocommerce;

    /**
     * Slugs
     **/
    $shop_page_id = woocommerce_get_page_id('shop');

    $base_slug = ($shop_page_id > 0 && get_page( $shop_page_id )) ? get_page_uri( $shop_page_id ) : 'shop';

    $category_slug = (get_option('woocommerce_product_category_slug')) ? get_option('woocommerce_product_category_slug') : _x('product-category', 'slug', 'woocommerce');

    $tag_slug = (get_option('woocommerce_product_tag_slug')) ? get_option('woocommerce_product_tag_slug') : _x('product-tag', 'slug', 'woocommerce');

    $attribute_taxonomies = $woocommerce->attribute_taxonomies;
    if ( $attribute_taxonomies ) :
        foreach ($attribute_taxonomies as $tax) :

            $attribute = strtolower(sanitize_title($tax->attribute_name));
                $taxonomy = $woocommerce->attribute_taxonomy_name($attribute);

            if(get_option('woocommerce_prepend_shop_page_to_urls')=="yes"){
                add_rewrite_rule( $base_slug .'/'. $category_slug.'/(.+?)/'.$attribute.'/([^/]+)(/page/([0-9]+)?)?/?$',
                    'index.php?product_cat=$matches[1]&'.$taxonomy.'=$matches[2]&paged=$matches[4]',
                    'top' );
                add_rewrite_rule( $base_slug .'/'. $tag_slug.'/(.+?)/'.$attribute.'/([^/]+)(/page/([0-9]+)?)?/?$',
                    'index.php?product_tag=$matches[1]&'.$taxonomy.'=$matches[2]&paged=$matches[4]',
                    'top' );
            } else {
                add_rewrite_rule( $category_slug.'/(.+?)/'.$attribute.'/([^/]+)(/page/([0-9]+)?)?/?$',
                        'index.php?product_cat=$matches[1]&'.$taxonomy.'=$matches[2]&paged=$matches[4]',
                        'top' );
                add_rewrite_rule( $tag_slug.'/(.+?)/'.$attribute.'/([^/]+)(/page/([0-9]+)?)?/?$',
                        'index.php?product_tag=$matches[1]&'.$taxonomy.'=$matches[2]&paged=$matches[4]',
                        'top' );
            }

    endforeach;
    endif;



}
add_action('init','mv_add_rewrite_rule');