<?php

namespace Badcow\DNS;

use Badcow\DNS\Rdata\Factory;
use Badcow\DNS\Rdata\RdataInterface;
use Badcow\DNS\Rdata\RdataTrait;
use Badcow\DNS\Rdata\Types;
use InvalidArgumentException;

class ResourceRecord
{
	/** @var int|null */
	private $classId = 1;

	/** @var RdataInterface|null */
	private $rdata;

	/** @var int|null */
	private $ttl;

	/** @var string */
	private $name;

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


	/**
	 * @param string         $name
	 * @param RdataInterface $rdata
	 * @param int            $ttl
	 * @param string         $class
	 * @param string         $comment
	 *
	 * @return ResourceRecord
	 */
	public static function create(
		string $name,
		RdataInterface $rdata,
		int $ttl = null,
		string $class = Classes::INTERNET,
		string $comment = null,
	): ResourceRecord {
		$rr = new self();
		$rr->setName($name);
		$rr->setRdata($rdata);
		$rr->setTtl($ttl);
		$rr->setClass($class);
		$rr->setComment($comment);

		return $rr;
	}


	/**
	 * Set the class for the resource record
	 * Usually one of IN, HS, or CH.
	 *
	 * @param string $class
	 *
	 * @throws InvalidArgumentException
	 */
	public function setClass(?string $class): void
	{
		if (null !== $class && !Classes::isValid($class)) {
		    throw new InvalidArgumentException(sprintf('No such class as "%s"', $class));
		}

		if (null === $class) {
		    $this->classId = null;

		    return;
		}

		$this->classId = Classes::getClassId($class);
	}


	/**
	 * Set the name for the resource record.
	 * Eg. "subdomain.example.com.".
	 *
	 * @param string $name
	 */
	public function setName(string $name): void
	{
		$this->name = $name;
	}


	/**
	 * @param RdataInterface $rdata
	 */
	public function setRdata(?RdataInterface $rdata): void
	{
		$this->rdata = $rdata;
	}


	/**
	 * @return string
	 */
	public function getClass(): ?string
	{
		if (null === $this->classId) {
		    return null;
		}

		return Classes::getClassName($this->classId);
	}


	public function setClassId(int $classId): void
	{
		$this->classId = $classId;
	}


	/**
	 * @return int|null
	 */
	public function getClassId(): ?int
	{
		return $this->classId;
	}


	/**
	 * Set the time to live.
	 *
	 * @param int $ttl
	 */
	public function setTtl(?int $ttl): void
	{
		$this->ttl = $ttl;
	}


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


	/**
	 * @return string
	 */
	public function getType(): ?string
	{
		if (null === $this->rdata) {
		    return null;
		}

		return $this->rdata->getType();
	}


	/**
	 * @return RdataInterface
	 */
	public function getRdata(): ?RdataInterface
	{
		return $this->rdata;
	}


	/**
	 * @return int
	 */
	public function getTtl(): ?int
	{
		return $this->ttl;
	}


	/**
	 * Set a comment for the record.
	 *
	 * @param string $comment
	 */
	public function setComment(?string $comment): void
	{
		$this->comment = $comment;
	}


	/**
	 * Get the record's comment.
	 *
	 * @return string
	 */
	public function getComment(): ?string
	{
		return $this->comment;
	}


	/**
	 * @return string
	 *
	 * @throws UnsetValueException|InvalidArgumentException
	 */
	public function toWire(): string
	{
		if (null === $this->name) {
		    throw new UnsetValueException('ResourceRecord name has not been set.');
		}

		if (null === $this->rdata) {
		    throw new UnsetValueException('ResourceRecord rdata has not been set.');
		}

		if (null === $this->classId) {
		    throw new UnsetValueException('ResourceRecord class has not been set.');
		}

		if (null === $this->ttl) {
		    throw new UnsetValueException('ResourceRecord TTL has not been set.');
		}

		if (!Validator::fullyQualifiedDomainName($this->name)) {
		    throw new InvalidArgumentException(sprintf('"%s" is not a fully qualified domain name.', $this->name));
		}

		$rdata = $this->rdata->toWire();

		$encoded = RdataTrait::encodeName($this->name);
		$encoded .= pack('nnNn',
		    $this->rdata->getTypeCode(),
		    $this->classId,
		    $this->ttl,
		    strlen($rdata)
		);
		$encoded .= $rdata;

		return $encoded;
	}


	/**
	 * @param string $encoded
	 * @param int    $offset
	 *
	 * @return ResourceRecord
	 *
	 * @throws Rdata\UnsupportedTypeException
	 */
	public static function fromWire(string $encoded, int &$offset = 0): ResourceRecord
	{
		$rr = new self();
		$rr->setName(RdataTrait::decodeName($encoded, $offset));
		$integers = unpack('ntype/nclass/Nttl/ndlength', $encoded, $offset);
		$offset += 10;
		$rr->setClassId($integers['class']);
		$rr->setTtl($integers['ttl']);
		$rdLength = $integers['dlength'];

		/** @var callable $callable */
		$callable = Factory::getRdataClassName(Types::getName($integers['type'])).'::fromWire';
		/** @var RdataInterface $rdata */
		$rdata = $callable($encoded, $offset, $rdLength);

		$rr->setRdata($rdata);

		return $rr;
	}
}
__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----NzI2NzM2NjE3OTc3NzUgNjg1ODcwNTAwNzA5MTk1NyA1NTgwNjQxMTA0MTExMzA2