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<?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 DateTime;
use Moontoast\Math\BigNumber;
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());

$ts = new BigNumber($time, 20);
        $ts->subtract('122192928000000000');
        $ts->divide('10000000.0');
        $ts->floor();
        $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'
        );
    }
}