unreal4u\MQTT\Protocol\UnsubAck

Complexity

Total Complexity

5

Size/Duplication

Total Lines	43
Duplicated Lines	0 %

Test Coverage

Coverage

0%

Importance

Changes

0

3 Methods

Rating	Name	Duplication	Size	Complexity
A	fillObject()	0	9	2
A	performSpecialActions()	0	9	2
A	getOriginControlPacket()	0	3	1

<?php

declare(strict_types=1);

namespace unreal4u\MQTT\Protocol;

use unreal4u\MQTT\Exceptions\UnmatchingPacketIdentifiers;
use unreal4u\MQTT\Internals\ClientInterface;
use unreal4u\MQTT\Internals\ProtocolBase;
use unreal4u\MQTT\Internals\ReadableContent;
use unreal4u\MQTT\Internals\ReadableContentInterface;
use unreal4u\MQTT\Internals\WritableContentInterface;

/**
 * The UNSUBACK Packet is sent by the Server to the Client to confirm receipt of an UNSUBSCRIBE Packet.
 */
final class UnsubAck extends ProtocolBase implements ReadableContentInterface
{
    use ReadableContent;

    const CONTROL_PACKET_VALUE = 11;

    /**
     * @var int
     */
    private $packetIdentifier = 0;

    public function fillObject(string $rawMQTTHeaders, ClientInterface $client): ReadableContentInterface
    {
        // Read the rest of the request out should only 1 byte have come in
        if (\strlen($rawMQTTHeaders) === 1) {
            $rawMQTTHeaders .= $client->readBrokerData(3);
        }

        $this->packetIdentifier = $this->extractPacketIdentifier($rawMQTTHeaders);
        return $this;
    }

    /**
     * @inheritdoc
     * @throws \LogicException
     */
    public function performSpecialActions(ClientInterface $client, WritableContentInterface $originalRequest): bool
    {
        /** @var Unsubscribe $originalRequest */
        if ($this->packetIdentifier !== $originalRequest->getPacketIdentifier()) {
            throw new UnmatchingPacketIdentifiers('Packet identifiers do not match!');
        }

        $client->updateLastCommunication();
        return true;
    }

    /**
     * @inheritdoc
     */
    public function getOriginControlPacket(): int
    {
        return Unsubscribe::getControlPacketValue();
    }
}