Display You Saved in Cart Totals and Order Review Row

Display "You saved" message in cart totals and order review row.

// Show You Saved (Price) in Cart Totals and Order Review Row
if (!function_exists('woo_discount_rules_show_you_saved_cart_totals_row')) {
    add_action('woocommerce_cart_totals_after_order_total', 'woo_discount_rules_show_you_saved_cart_totals_row', 9999);
    add_action('woocommerce_review_order_after_order_total', 'woo_discount_rules_show_you_saved_cart_totals_row', 9999);
    function woo_discount_rules_show_you_saved_cart_totals_row() {
        $discount_total = 0;

        // Discount total label in cart and checkout page
        $display_text = __('You Saved', 'woo-discount-rules');

        // Calculate default discount price total
        foreach (WC()->cart->get_cart() as $cart_item_key => $values) {
            $product = $values['data'];
            if ($product->is_on_sale()) {
                $regular_price = $product->get_regular_price();
                $sale_price = $product->get_sale_price();
                if(!empty($sale_price)){
                    $discount = ($regular_price - $sale_price) * $values['quantity'];
                    $discount_total += $discount;
                }
            }
        }

        // Add Woo Discount Rules discount price total
        if (class_exists('\Wdr\App\Router')) {
            $manage_discount = \Wdr\App\Router::$manage_discount;
            if (method_exists($manage_discount, 'getDiscountPerItem')) {
                if (!empty($manage_discount::$calculated_cart_item_discount)) {
                    foreach ($manage_discount::$calculated_cart_item_discount as $discount_details) {
                        if (!empty($discount_details)) {
                            $discount_total += $manage_discount->getDiscountPerItem($discount_details);
                        }
                    }
                }
            }
        }

        // Add Cart discount total
        $discount_total += WC()->cart->get_discount_total();


        if ($discount_total > 0) {
            echo '<tr><th>' . $display_text . '</th><td data-title="' . $display_text . '">' . wc_price($discount_total) . '</td></tr>';
        }
    }
}