<?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
 */

declare(strict_types=1);

namespace Ramsey\Uuid\Rfc4122;

use DateTimeImmutable;
use DateTimeInterface;
use Ramsey\Uuid\Exception\DateTimeException;
use Throwable;

use function str_pad;

use const STR_PAD_LEFT;

/**
 * Provides common functionality for getting the time from a time-based UUID
 *
 * @immutable
 */
trait TimeTrait
{
    /**
     * Returns a DateTimeInterface object representing the timestamp associated with the UUID
     *
     * @return DateTimeImmutable A PHP DateTimeImmutable instance representing the timestamp of a time-based UUID
     */
    public function getDateTime(): DateTimeInterface
    {
        $time = $this->timeConverter->convertTime($this->fields->getTimestamp());

        try {
            return new DateTimeImmutable(
                '@'
                . $time->getSeconds()->toString()
                . '.'
                . str_pad($time->getMicroseconds()->toString(), 6, '0', STR_PAD_LEFT)
            );
        } catch (Throwable $e) {
            throw new DateTimeException($e->getMessage(), (int) $e->getCode(), $e);
        }
    }
}