core/src/Cart/Exceptions/InvalidCouponException.php

<?php

namespace Modules\Core\Cart\Exceptions;

use RuntimeException;

/**
 * Thrown by CartService::applyCoupon() when the given code doesn't match any
 * currently-active, non-exhausted Discount — Lunar's own
 * Discounts::validateCoupon() only returns a bool, it has no matching
 * exception type of its own to reuse here.
 */
class InvalidCouponException extends RuntimeException
{
    public function __construct(public readonly string $couponCode)
    {
        parent::__construct("The coupon code \"{$couponCode}\" is not valid.");
    }
}