sfp_api_laravel_ginastica_cerebro/app/ValueObjects/Cpf.php

<?php

namespace App\ValueObjects;

use App\Casts\CpfCast;
use Closure;
use Illuminate\Contracts\Database\Eloquent\Castable;
use InvalidArgumentException;
use JsonSerializable;
use Stringable;

final readonly class Cpf implements Castable, JsonSerializable, Stringable
{
    private string $value;

    public function __construct(string $value)
    {
        $digits = preg_replace('/\D/', '', $value);

        if ($digits === null || ! self::isValid($digits)) {
            throw new InvalidArgumentException(__('validation.cpf'));
        }

        $this->value = $digits;
    }

    public static function castUsing(array $arguments): string
    {
        return CpfCast::class;
    }

    public static function rule(): Closure
    {
        return static function (string $attribute, mixed $value, Closure $fail): void {
            if (! is_string($value)) {
                $fail(__('validation.cpf'));

                return;
            }

            try {
                new self($value);
            } catch (InvalidArgumentException) {
                $fail(__('validation.cpf'));
            }
        };
    }

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

    public function formatted(): string
    {
        return preg_replace(
            '/(\d{3})(\d{3})(\d{3})(\d{2})/',
            '$1.$2.$3-$4',
            $this->value,
        );
    }

    public function __toString(): string
    {
        return $this->value;
    }

    public function jsonSerialize(): string
    {
        return $this->value;
    }

    private static function isValid(string $digits): bool
    {
        if (strlen($digits) !== 11 || preg_match('/^(\d)\1{10}$/', $digits)) {
            return false;
        }

        for ($position = 9; $position < 11; $position++) {
            $sum = 0;

            for ($index = 0; $index < $position; $index++) {
                $sum += (int) $digits[$index] * (($position + 1) - $index);
            }

            $checkDigit = (($sum * 10) % 11) % 10;

            if ((int) $digits[$position] !== $checkDigit) {
                return false;
            }
        }

        return true;
    }
}