<?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:----OTAzNDY1MjY5NDMwNjY1IDI4NDY1NzAzMjM0ODA4NSA4NTA3ODYyOTYyOTM2NjM1