<?php
/**
* This file is part of the ramsey/uuid library
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*
* @copyright Copyright (c) Ben Ramsey <ben@benramsey.com>
* @license http://opensource.org/licenses/MIT MIT
* @link https://benramsey.com/projects/ramsey-uuid/ Documentation
* @link https://packagist.org/packages/ramsey/uuid Packagist
* @link https://github.com/ramsey/uuid GitHub
*/

namespace Ramsey\Uuid;

use Ramsey\Uuid\Exception\UnsatisfiedDependencyException;
use Ramsey\Uuid\Exception\UnsupportedOperationException;

/**
* DegradedUuid represents an RFC 4122 UUID on 32-bit systems
*
* @see Uuid
*/
class DegradedUuid extends Uuid
{
/**
* @inheritdoc
*/
public function getDateTime()
{
if ($this->getVersion() != 1) {
throw new UnsupportedOperationException('Not a time-based UUID');
}

$time = $this->converter->fromHex($this->getTimestampHex());

$ts = new \Moontoast\Math\BigNumber($time, 20);
$ts->subtract('122192928000000000');
$ts->divide('10000000.0');
$ts->round();
$unixTime = $ts->getValue();

return new \DateTime("@{$unixTime}");
}

/**
* For degraded UUIDs, throws an `UnsatisfiedDependencyException` when
* called on a 32-bit system
*
* @throws UnsatisfiedDependencyException if called on a 32-bit system
*/
public function getFields()
{
throw new UnsatisfiedDependencyException(
'Cannot call ' . __METHOD__ . ' on a 32-bit system, since some '
. 'values overflow the system max integer value'
. '; consider calling getFieldsHex instead'
);
}

/**
* For degraded UUIDs, throws an `UnsatisfiedDependencyException` when
* called on a 32-bit system
*
* @throws UnsatisfiedDependencyException if called on a 32-bit system
*/
public function getNode()
{
throw new UnsatisfiedDependencyException(
'Cannot call ' . __METHOD__ . ' on a 32-bit system, since node '
. 'is an unsigned 48-bit integer and can overflow the system '
. 'max integer value'
. '; consider calling getNodeHex instead'
);
}

/**
* For degraded UUIDs, throws an `UnsatisfiedDependencyException` when
* called on a 32-bit system
*
* @throws UnsatisfiedDependencyException if called on a 32-bit system
*/
public function getTimeLow()
{
throw new UnsatisfiedDependencyException(
'Cannot call ' . __METHOD__ . ' on a 32-bit system, since time_low '
. 'is an unsigned 32-bit integer and can overflow the system '
. 'max integer value'
. '; consider calling getTimeLowHex instead'
);
}

/**
* For degraded UUIDs, throws an `UnsatisfiedDependencyException` when
* called on a 32-bit system
*
* @throws UnsatisfiedDependencyException if called on a 32-bit system
* @throws UnsupportedOperationException If this UUID is not a version 1 UUID
*/
public function getTimestamp()
{
if ($this->getVersion() != 1) {
throw new UnsupportedOperationException('Not a time-based UUID');
}

throw new UnsatisfiedDependencyException(
'Cannot call ' . __METHOD__ . ' on a 32-bit system, since timestamp '
. 'is an unsigned 60-bit integer and can overflow the system '
. 'max integer value'
. '; consider calling getTimestampHex instead'
);
}
}