<?php

namespace Faker\Provider\en_GB;

class Company extends \Faker\Provider\Company
{
    public const VAT_PREFIX = 'GB';
    public const VAT_TYPE_DEFAULT = 'vat';
    public const VAT_TYPE_BRANCH = 'branch';
    public const VAT_TYPE_GOVERNMENT = 'gov';
    public const VAT_TYPE_HEALTH_AUTHORITY = 'health';

    /**
     * UK VAT number
     *
     * This method produces numbers that are _reasonably_ representative
     * of those issued by government
     *
     * @see https://en.wikipedia.org/wiki/VAT_identification_number#VAT_numbers_by_country
     */
    public static function vat(string $type = null): string
    {
        switch ($type) {
            case static::VAT_TYPE_BRANCH:
                return static::generateBranchTraderVatNumber();

            case static::VAT_TYPE_GOVERNMENT:
                return static::generateGovernmentVatNumber();

            case static::VAT_TYPE_HEALTH_AUTHORITY:
                return static::generateHealthAuthorityVatNumber();

            default:
                return static::generateStandardVatNumber();
        }
    }

    /**
     * Standard
     * 9 digits (block of 3, block of 4, block of 2)
     *
     * This uses the format introduced November 2009 onward where the first
     * block starts from 100 and the final two digits are generated via a the
     * modulus 9755 algorithm
     */
    private static function generateStandardVatNumber(): string
    {
        $firstBlock = static::numberBetween(100, 999);
        $secondBlock = static::randomNumber(4, true);

        return sprintf(
            '%s%d %d %d',
            static::VAT_PREFIX,
            $firstBlock,
            $secondBlock,
            static::calculateModulus97($firstBlock . $secondBlock),
        );
    }

    /**
     * Health authorities
     * the letters HA then 3 digits from 500 to 999 (e.g. GBHA599)
     */
    private static function generateHealthAuthorityVatNumber(): string
    {
        return sprintf(
            '%sHA%d',
            static::VAT_PREFIX,
            static::numberBetween(500, 999),
        );
    }

    /**
     * Branch traders
     * 12 digits (as for 9 digits, followed by a block of 3 digits)
     */
    private static function generateBranchTraderVatNumber(): string
    {
        return sprintf(
            '%s %d',
            static::generateStandardVatNumber(),
            static::randomNumber(3, true),
        );
    }

    /**
     * Government departments
     * the letters GD then 3 digits from 000 to 499 (e.g. GBGD001)
     */
    private static function generateGovernmentVatNumber(): string
    {
        return sprintf(
            '%sGD%s',
            static::VAT_PREFIX,
            str_pad((string) static::numberBetween(0, 499), 3, '0', STR_PAD_LEFT),
        );
    }

    /**
     * Apply a Modulus97 algorithm to an input
     *
     * @see https://library.croneri.co.uk/cch_uk/bvr/43-600
     */
    public static function calculateModulus97(string $input, bool $use9755 = true): string
    {
        $digits = str_split($input);

        if (count($digits) !== 7) {
            throw new \InvalidArgumentException();
        }
        $multiplier = 8;
        $sum = 0;

        foreach ($digits as $digit) {
            $sum += (int) $digit * $multiplier;
            --$multiplier ;
        }

        if ($use9755) {
            $sum = $sum + 55;
        }

        while ($sum > 0) {
            $sum -= 97;
        }
        $sum = $sum * -1;

        return str_pad((string) $sum, 2, '0', STR_PAD_LEFT);
    }
}

• [F] Address.php
  Delete
• [F] Company.php
  Delete
• [F] Internet.php
  Delete
• [F] Payment.php
  Delete
• [F] Person.php
  Delete
• [F] PhoneNumber.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