درست کردن درصد تخفیف در المنتور برای محصولات وکامرس

function wc_discount_percent_shortcode($atts) {
    $atts = shortcode_atts(array(
        'id' => null,
    ), $atts, 'wc_discount_percent');
    if (!empty($atts['id'])) {
        $product = wc_get_product($atts['id']);
    } else {
        global $product;
        if (!is_object($product) || !method_exists($product, 'is_on_sale')) {
            return '';
        }
    }
	
    if (!is_object($product) || !method_exists($product, 'is_on_sale')) {
        return '';
    }
    
    if ($product->is_on_sale()) {
        if ($product->is_type('variable')) {
            $percentages = array();
            $variation_prices = $product->get_variation_prices();
            
            foreach ($variation_prices['regular_price'] as $key => $regular_price) {
                if ($regular_price > 0) {
                    $sale_price = $variation_prices['sale_price'][$key];
                    $percentage = round((($regular_price - $sale_price) / $regular_price) * 100);
                    $percentages[] = $percentage;
                }
            }
            
            $percentage = !empty($percentages) ? max($percentages) : 0;
        } else {
            $regular_price = $product->get_regular_price();
            $sale_price = $product->get_sale_price();
            
            if ($regular_price > 0 && $sale_price > 0) {
                $percentage = round((($regular_price - $sale_price) / $regular_price) * 100);
            } else {
                $percentage = 0;
            }
        }
        
        if ($percentage > 0) {
            return $percentage . '%';
        }
    }
    
    return '';
}
add_shortcode('wc_discount_percent', 'wc_discount_percent_shortcode');