gistfile1.php

<?php

namespace WriteModel\Order;


use DateTime;

final class Order
{

    /**
     * @var OrderId
     */
    private $orderId;

    /**
     * @var DateTime
     */
    private $placedOn;

    /**
     * @var string
     */
    private $customerName;

    /**
     * @var string
     */
    private $customerStreetAndNumber;

    /**
     * @var string
     */
    private $customerZipCodeAndCity;

    /**
     * @var string
     */
    private $customerVatNumber;

    /**
     * @var string
     */
    private $customerCountry;

    private function __construct(OrderId $orderId)
    {
        $this->orderId = $orderId;
    }

    public static function place(
        OrderId $orderId,
        $customerName,
        $customerStreetAndNumber,
        $customerZipCodeAndCity,
        $customerCountry,
        $customerVatNumber
    ) {
        $order = new self($orderId);
        $order->placedOn = new DateTime('now');
        $order->updateInvoiceDetails(
            $customerName,
            $customerStreetAndNumber,
            $customerZipCodeAndCity,
            $customerCountry,
            $customerVatNumber
        );
        return $order;
    }

    public function updateInvoiceDetails(
        $customerName,
        $customerStreetAndNumber,
        $customerZipCodeAndCity,
        $customerCountry,
        $customerVatNumber
    ) {
        $this->customerName = $customerName;
        $this->customerStreetAndNumber = $customerStreetAndNumber;
        $this->customerZipCodeAndCity = $customerZipCodeAndCity;
        $this->customerCountry = $customerCountry;
        $this->customerVatNumber = $customerVatNumber;
    }

}