Genkgo\Mail\Dkim\Parameters

Complexity

Total Complexity

8

Size/Duplication

Total Lines	101
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	2

Test Coverage

Coverage

100%

Importance

Changes

0

4 Methods

Rating	Name	Duplication	Size	Complexity
A	__construct()	0	5	1
A	withSignatureTimestamp()	0	6	1
A	withSignatureExpiration()	0	6	1
B	newHeaderValue()	0	40	5

<?php

namespace Genkgo\Mail\Dkim;

use Genkgo\Mail\Header\HeaderValue;
use Genkgo\Mail\Header\HeaderValueParameter;

/**
 * Class Parameters
 * @package Genkgo\Mail\Dkim
 */
final class Parameters
{

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

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

    /**
     * @var \DateTimeImmutable
     */
    private $signatureTimestamp;

    /**
     * @var \DateTimeImmutable
     */
    private $signatureExpiration;


    /**
     * Parameters constructor.
     * @param string $selector
     * @param string $domain
     */
    public function __construct(string $selector, string $domain)
    {
        $this->selector = $selector;
        $this->domain = $domain;
    }

    /**
     * @param \DateTimeImmutable $moment
     * @return Parameters
     */
    public function withSignatureTimestamp(\DateTimeImmutable $moment): self
    {
        $clone = clone $this;
        $clone->signatureTimestamp = $moment;
        return $clone;
    }

    /**
     * @param \DateTimeImmutable $moment
     * @return Parameters
     */
    public function withSignatureExpiration(\DateTimeImmutable $moment): self
    {
        $clone = clone $this;
        $clone->signatureExpiration = $moment;
        return $clone;
    }

    /**
     * @return HeaderValue
     */
    public function newHeaderValue(): HeaderValue
    {
        $selector = idn_to_ascii($this->selector);

        // @codeCoverageIgnoreStart
        if ($selector === false) {
            throw new \UnexpectedValueException('Cannot encode selector as A-label');
        }

        $domain = idn_to_ascii($this->domain);
        if ($domain === false) {
            throw new \UnexpectedValueException('Cannot encode domain as A-label');
        }
        // @codeCoverageIgnoreEnd

        $headerValue = (new HeaderValue('v=1'))
            ->withParameter((new HeaderValueParameter('q', 'dns/txt'))->withSpecials(''))
            ->withParameter((new HeaderValueParameter('d', $domain))->withSpecials(''), true)
            ->withParameter((new HeaderValueParameter('s', $selector))->withSpecials(''));

        if ($this->signatureTimestamp !== null) {
            $signatureTimestamp = $this
                ->signatureTimestamp
                ->setTimezone(new \DateTimeZone('UTC'))
                ->format('U');

            $headerValue = $headerValue->withParameter((new HeaderValueParameter('t', $signatureTimestamp)));
        }

        if ($this->signatureExpiration !== null) {
            $signatureExpiration = $this
                ->signatureExpiration
                ->setTimezone(new \DateTimeZone('UTC'))
                ->format('U');

            $headerValue = $headerValue->withParameter((new HeaderValueParameter('x', $signatureExpiration)));
        }

        return $headerValue;
    }
}