<?php

declare(strict_types=1);

/**

* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

* THE SOFTWARE.

* This software consists of voluntary contributions made by many individuals

* and is licensed under the MIT license.

* Copyright (c) 2018 Yuuki Takezawa

*/

namespace ValueObjects\Identity;

use Ramsey\Uuid\Uuid as BaseUuid;

use ValueObjects\Exception\InvalidNativeArgumentException;

use ValueObjects\StringLiteral\StringLiteral;

use ValueObjects\Util\Util;

use ValueObjects\ValueObjectInterface;

/**

* Class UUID.

*/

class UUID extends StringLiteral

{

/** @var BaseUuid */

protected $value;

/**

* UUID constructor.

*

* @param string|null $value

*/

public function __construct(string $value = null)

{

$uuid_str = BaseUuid::uuid4();

if (null !== $value) {

$pattern = '/'.BaseUuid::VALID_PATTERN.'/';

if (!\preg_match($pattern, $value)) {

throw new InvalidNativeArgumentException($value, ['UUID string']);

}

$uuid_str = $value;

}

$this->value = \strval($uuid_str);

}

/**

* @param string $uuid

*

* @throws \ValueObjects\Exception\InvalidNativeArgumentException

*

* @return UUID|ValueObjectInterface

*/

public static function fromNative(): ValueObjectInterface

{

$uuid_str = \func_get_arg(0);

$uuid = new static($uuid_str);

return $uuid;

}

/**

* Generate a new UUID string.

*

* @return string

*/

public static function generateAsString(): string

{

$uuid = new static();

$uuidString = $uuid->toNative();

return $uuidString;

}

/**

* Tells whether two UUID are equal by comparing their values.

*

* @param UUID|ValueObjectInterface $uuid

*

* @return bool

*/

public function sameValueAs(ValueObjectInterface $uuid): bool

{

if (false === Util::classEquals($this, $uuid)) {

return false;

}

return $this->toNative() === $uuid->toNative();

}

}