<?php
namespace Tests\Extension\Faker\Provider;

use Faker\Provider\Base;

class Rut extends Base
{
    public function rut(bool $withDigito = true, bool $withDotsAndSlash = true): string
    {
        $base = self::numberBetween(1000000, 99999999);
        $rut = $base;
        if ($withDotsAndSlash) {
            $rut = number_format($rut, 0, ',', '.');
        }
        if ($withDigito) {
            $digito = $this->getDigito($base);
            if ($withDotsAndSlash) {
                return "{$digito}-{$rut}";
            }
            return "{$digito}{$rut}";
        }
        return $rut;
    }
    public function digitoVerificador(string $rut): bool|string
    {
        if ( !preg_match("/^[0-9.]+/",$rut)) return false;
        $rut = str_replace('.','',$rut);
        return $this->getDigito($rut);
    }

    protected function getDigito(string $rut): string
    {
        $M=0;$S=1;
        for(;$rut;$rut=floor($rut/10))
            $S=($S+$rut%10*(9-$M++%6))%11;
        return $S?$S-1:'K';
    }
}