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<?php

declare(strict_types=1);

namespace Jose\Component\Core\Util;

use Brick\Math\BigInteger as BrickBigInteger;
use InvalidArgumentException;
use function chr;

/**
 * @internal
 */
final class BigInteger
{
    private function __construct(
        private readonly BrickBigInteger $value
    ) {
    }

public static function createFromBinaryString(string $value): self
    {
        $res = unpack('H*', $value);
        if ($res === false) {
            throw new InvalidArgumentException('Unable to convert the value');
        }
        $data = current($res);

return new self(BrickBigInteger::fromBase($data, 16));
    }

public static function createFromDecimal(int $value): self
    {
        return new self(BrickBigInteger::of($value));
    }

public static function createFromBigInteger(BrickBigInteger $value): self
    {
        return new self($value);
    }

/**
     * Converts a BigInteger to a binary string.
     */
    public function toBytes(): string
    {
        if ($this->value->isEqualTo(BrickBigInteger::zero())) {
            return '';
        }

$temp = $this->value->toBase(16);
        $temp = 0 !== (mb_strlen($temp, '8bit') & 1) ? '0' . $temp : $temp;
        $temp = hex2bin($temp);
        if ($temp === false) {
            throw new InvalidArgumentException('Unable to convert the value into bytes');
        }

return ltrim($temp, chr(0));
    }

/**
     * Adds two BigIntegers.
     */
    public function add(self $y): self
    {
        $value = $this->value->plus($y->value);