Get max discount of product compare with discount rule discount and ACF max discount

Compare the maximum discount of a product with discount rule discounts and ACF maximum discounts.

add_filter('advanced_woo_discount_rules_discount_prices_of_product', function ($discount_prices, $product, $quantity, $cart_item){

  if ($product && method_exists($product,'get_id') && function_exists('get_field')){
      $product_id = $product->get_id();
      $max_discount_price = get_field( "max_discount_amount", $product_id);
      if (!empty($max_discount_price) && isset($discount_prices['discounted_price']) && class_exists('\Wdr\App\Controllers\ManageDiscount')) {
          $calculator = \Wdr\App\Controllers\ManageDiscount::$calculator;
          $discount_price = $discount_prices['initial_price'] - $discount_prices['discounted_price'];
          if ($discount_price > $max_discount_price) {
              $discount_prices['discounted_price'] = $discount_prices['initial_price'] - $max_discount_price;
              $product_price_with_tax = $calculator->mayHaveTax($product, $discount_prices['discounted_price']);
              $discount_prices['discounted_price_with_tax'] = $product_price_with_tax;
          }
      }
  }
    return $discount_prices;
}, 10, 4);