Daikon\EventSourcing\EventStore\StreamRevision

Complexity

Total Complexity

14

Size/Duplication

Total Lines	79
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	2

Test Coverage

Coverage

21.88%

Importance

Changes

0

13 Methods

Rating	Name	Duplication	Size	Complexity
A	fromNative()	0	4	1
A	makeEmpty()	0	4	1
A	toNative()	0	4	1
A	decrement()	0	6	1
A	equals()	0	5	1
A	isEmpty()	0	4	1
A	isInitial()	0	4	1
A	__toString()	0	4	1
A	__construct()	0	4	1
A	increment()	0	6	1
A	isWithinRange()	0	4	2
A	isGreaterThanOrEqual()	0	4	1
A	isLessThanOrEqual()	0	4	1

<?php
/**
 * This file is part of the daikon-cqrs/cqrs project.
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

declare(strict_types=1);

namespace Daikon\EventSourcing\EventStore;

use Assert\Assertion;
use Daikon\Entity\ValueObject\ValueObjectInterface;

final class StreamRevision implements ValueObjectInterface
{
    private const INITIAL = 1;

    private const NONE = 0;

    /** @var int */
    private $revision;

    public static function fromNative($revision): ValueObjectInterface
    {
        return new self($revision);
    }

    public static function makeEmpty(): ValueObjectInterface
    {
        return new static(self::NONE);
    }

    public function toNative(): int
    {
        return $this->revision;
    }

    public function increment(): StreamRevision
    {
        $copy = clone $this;
        $copy->revision++;
        return $copy;
    }

    public function decrement(): StreamRevision
    {
        $copy = clone $this;
        $copy->revision--;
        return $copy;
    }

    public function equals(ValueObjectInterface $otherValue): bool
    {
        Assertion::isInstanceOf($otherValue, static::class);
        return $otherValue->toNative() === $this->revision;
    }

    public function isEmpty(): bool
    {
        return $this->revision === self::NONE;
    }

    public function isInitial(): bool
    {
        return $this->revision === self::INITIAL;
    }

    public function isWithinRange(StreamRevision $from, StreamRevision $to)
    {
        return $this->isGreaterThanOrEqual($from) && $this->isLessThanOrEqual($to);
    }

    public function isGreaterThanOrEqual(StreamRevision $revision)
    {
        return $this->revision >= $revision->toNative();
    }

    public function isLessThanOrEqual(StreamRevision $revision)
    {
        return $this->revision <= $revision->toNative();
    }

    public function __toString(): string
    {
        return (string)$this->revision;
    }

    private function __construct(int $revision)
    {
        $this->revision = $revision;
    }
}