<?php

namespace Badcow\DNS\Rdata;

use Badcow\DNS\Parser\StringIterator;
use Badcow\DNS\Parser\Tokens;

/**
 * @see https://tools.ietf.org/html/rfc1035#section-3.3.2
 */
class HINFO implements RdataInterface
{
    use RdataTrait;

    public const TYPE = 'HINFO';
    public const TYPE_CODE = 13;

    /** @var string|null */
    private $cpu;

    /** @var string|null */
    private $os;

    public function setCpu(?string $cpu): void
    {
        $this->cpu = $cpu;
    }

    /**
     * @return string
     */
    public function getCpu(): ?string
    {
        return $this->cpu;
    }

    public function setOs(?string $os): void
    {
        $this->os = $os;
    }

    /**
     * @return string
     */
    public function getOs(): ?string
    {
        return $this->os;
    }

    public function toText(): string
    {
        return sprintf('"%s" "%s"', $this->cpu ?? '', $this->os ?? '');
    }

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

    public function fromWire(string $rdata, int &$offset = 0, ?int $rdLength = null): void
    {
        $this->fromText(substr($rdata, $offset, $rdLength ?? strlen($rdata)));
        $offset += $rdLength;
    }

    public function fromText(string $text): void
    {
        $string = new StringIterator($text);
        $this->setCpu(self::extractText($string));
        $this->setOs(self::extractText($string));
    }

    private static function extractText(StringIterator $string): string
    {
        $txt = new StringIterator();

        if ($string->is(Tokens::DOUBLE_QUOTES)) {
            TXT::handleTxt($string, $txt);
            $string->next();
        } else {
            while ($string->isNot(Tokens::SPACE) && $string->valid()) {
                $txt->append($string->current());
                $string->next();
            }
        }

        if ($string->is(Tokens::SPACE)) {
            $string->next();
        }

        return (string) $txt;
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NzczNTE1MDIyOTYxNDI3NSA1NDY4MjU4MTk5NDczODQzIDYxODIxMzI2NjIxNDgyODM=