<?php

namespace KupShop\InvoicesBundle\Event;

use KupShop\OrderingBundle\Event\OrderEvent;

class OrderInvoiceEvent extends OrderEvent
{
    /** Vygenerovani faktury */
    public const ORDER_INVOICE = 'kupshop.order.invoice';

    private const DEFAULT_INVOICE_NUMBER = 1; // default Faktura

    private $invoice_number;

    public function getInvoiceNumber()
    {
        return $this->invoice_number ?? self::DEFAULT_INVOICE_NUMBER;
    }

    public function setInvoiceNumber($invoice_number)
    {
        $this->invoice_number = $invoice_number;
    }

    public function invoiceNumberHasBeenSet(): bool
    {
        return (bool) $this->invoice_number;
    }
}