<?php

namespace Badcow\DNS\Rdata;

use Badcow\DNS\Validator;

/**
 * @see https://tools.ietf.org/html/rfc1035#section-3.4.1
 */
class A implements RdataInterface
{
    use RdataTrait;

    public const TYPE = 'A';
    public const TYPE_CODE = 1;

    /** @var string|null */
    protected $address;

    public function setAddress(string $address): void
    {
        if (!Validator::ipv4($address)) {
            throw new \InvalidArgumentException(sprintf('The address "%s" is not a valid IPv4 address.', $address));
        }

        $this->address = $address;
    }

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

    public function toText(): string
    {
        return $this->address ?? '';
    }

    /**
     * @throws \InvalidArgumentException
     */
    public function toWire(): string
    {
        if (!isset($this->address)) {
            throw new \InvalidArgumentException('No IP address has been set.');
        }

        if (false === $encoded = @inet_pton($this->address)) {
            throw new \InvalidArgumentException(sprintf('The IP address "%s" cannot be encoded. Check that it is a valid IP address.', $this->address));
        }

        return $encoded;
    }

    public function fromText(string $text): void
    {
        $this->setAddress($text);
    }

    /**
     * @throws DecodeException
     */
    public function fromWire(string $rdata, int &$offset = 0, ?int $rdLength = null): void
    {
        if (false === $address = @inet_ntop(substr($rdata, $offset, 4))) {
            throw new DecodeException(static::TYPE, $rdata);
        }
        $offset += 4;

        $this->setAddress($address);
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NDM4NDEzNTcxOTgwNTk3OCA4MTAwNzU0Mzg5OTM1NjUxIDY1MDQ2MDI0MDQwNjA4Njg=