<?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\Nonstandard;

use Ramsey\Uuid\Exception\InvalidArgumentException;
use Ramsey\Uuid\Fields\SerializableFieldsTrait;
use Ramsey\Uuid\Rfc4122\FieldsInterface;
use Ramsey\Uuid\Rfc4122\VariantTrait;
use Ramsey\Uuid\Type\Hexadecimal;

use function bin2hex;
use function dechex;
use function hexdec;
use function sprintf;
use function str_pad;
use function strlen;
use function substr;

use const STR_PAD_LEFT;

/**
 * Nonstandard UUID fields do not conform to the RFC 4122 standard
 *
 * Since some systems may create nonstandard UUIDs, this implements the
 * Rfc4122\FieldsInterface, so that functionality of a nonstandard UUID is not
 * degraded, in the event these UUIDs are expected to contain RFC 4122 fields.
 *
 * Internally, this class represents the fields together as a 16-byte binary
 * string.
 *
 * @psalm-immutable
 */
final class Fields implements FieldsInterface
{
    use SerializableFieldsTrait;
    use VariantTrait;

    /**
     * @param string $bytes A 16-byte binary string representation of a UUID
     *
     * @throws InvalidArgumentException if the byte string is not exactly 16 bytes
     */
    public function __construct(private string $bytes)
    {
        if (strlen($this->bytes) !== 16) {
            throw new InvalidArgumentException(
                'The byte string must be 16 bytes long; '
                . 'received ' . strlen($this->bytes) . ' bytes'
            );
        }
    }

    public function getBytes(): string
    {
        return $this->bytes;
    }

    public function getClockSeq(): Hexadecimal
    {
        $clockSeq = hexdec(bin2hex(substr($this->bytes, 8, 2))) & 0x3fff;

        return new Hexadecimal(str_pad(dechex($clockSeq), 4, '0', STR_PAD_LEFT));
    }

    public function getClockSeqHiAndReserved(): Hexadecimal
    {
        return new Hexadecimal(bin2hex(substr($this->bytes, 8, 1)));
    }

    public function getClockSeqLow(): Hexadecimal
    {
        return new Hexadecimal(bin2hex(substr($this->bytes, 9, 1)));
    }

    public function getNode(): Hexadecimal
    {
        return new Hexadecimal(bin2hex(substr($this->bytes, 10)));
    }

    public function getTimeHiAndVersion(): Hexadecimal
    {
        return new Hexadecimal(bin2hex(substr($this->bytes, 6, 2)));
    }

    public function getTimeLow(): Hexadecimal
    {
        return new Hexadecimal(bin2hex(substr($this->bytes, 0, 4)));
    }

    public function getTimeMid(): Hexadecimal
    {
        return new Hexadecimal(bin2hex(substr($this->bytes, 4, 2)));
    }

    public function getTimestamp(): Hexadecimal
    {
        return new Hexadecimal(sprintf(
            '%03x%04s%08s',
            hexdec($this->getTimeHiAndVersion()->toString()) & 0x0fff,
            $this->getTimeMid()->toString(),
            $this->getTimeLow()->toString()
        ));
    }

    public function getVersion(): ?int
    {
        return null;
    }

    public function isNil(): bool
    {
        return false;
    }

    public function isMax(): bool
    {
        return false;
    }
}

• [F] Fields.php
  Delete
• [F] Uuid.php
  Delete
• [F] UuidBuilder.php
  Delete
• [F] UuidV6.php
  Delete

About Section

About NFC Pay: Our Story and Mission

NFC Pay was founded with a vision to transform the way people handle transactions. Our journey is defined by a commitment to innovation, security, and convenience. We strive to deliver seamless, user-friendly payment solutions that make everyday transactions effortless and secure. Our mission is to empower you to pay with ease and confidence, anytime, anywhere.

• Simplifying Payments, One Tap at a Time.
• Reinventing Your Wallet for Modern Convenience.
• Smart Payments for a Effortless Lifestyle.
• Experience the Ease of Tap and Pay.
• Innovative Solutions for Your Daily Transactions.

FAQ Section

Frequently Asked Questions About NFC Pay

Here are answers to some common questions about NFC Pay. We aim to provide clear and concise information to help you understand how our platform works and how it can benefit you. If you have any further inquiries, please don’t hesitate to contact our support team.

How do I register for NFC Pay?

Download the app and sign up using your email or phone number, then complete the verification process.

Is my payment information secure?

Yes, we use advanced encryption and security protocols to protect your payment details.

Can I add multiple cards to my NFC Pay wallet?

Absolutely, you can link multiple debit or credit cards to your wallet.

How do I transfer money to another user?

Go to the transfer section, select the recipient, enter the amount, and authorize the transfer.

What should I do if I forget my PIN?

Use the “Forgot PIN” feature in the app to reset it following the provided instructions.

How can I activate my merchant account?

Sign up for a merchant account through the app and follow the setup instructions to start accepting payments.

Can I track my payment status?

Yes, you can view and track your payment status in the account dashboard