<?php
declare(strict_types=1);

namespace Esun\FreeGift\Model;

class InternalAddGuard
{
    private int $depth = 0;

    public function isAllowed(): bool
    {
        return $this->depth > 0;
    }

    public function execute(callable $callback): mixed
    {
        $this->depth++;

        try {
            return $callback();
        } finally {
            $this->depth--;
        }
    }
}