EventSauce\EventSourcing\Message

Complexity

Total Complexity

9

Size/Duplication

Total Lines	63
Duplicated Lines	0 %

Test Coverage

Coverage

100%

Importance

Changes	2
Bugs	0	Features	0

8 Methods

Rating	Name	Duplication	Size	Complexity
A	header()	0	3	1
A	withHeader()	0	6	1
A	aggregateVersion()	0	9	2
A	__construct()	0	4	1
A	event()	0	3	1
A	headers()	0	3	1
A	aggregateRootId()	0	3	1
A	withHeaders()	0	6	1

<?php

declare(strict_types=1);

namespace EventSauce\EventSourcing;

use RuntimeException;

final class Message
{
    /**
     * @var object
     */
    private $event;

    /**
     * @var array
     */
    private $headers;

    public function __construct(object $event, array $headers = [])
    {
        $this->event = $event;
        $this->headers = $headers;
    }

    public function withHeader(string $key, $value): Message
    {
        $clone = clone $this;
        $clone->headers[$key] = $value;

        return $clone;
    }

    public function withHeaders(array $headers): Message
    {
        $clone = clone $this;
        $clone->headers = $headers + $clone->headers;

        return $clone;
    }

    public function aggregateVersion(): int
    {
        $version = $this->headers[Header::AGGREGATE_ROOT_VERSION] ?? null;

        if ($version === null) {
            throw new RuntimeException("Can't get the version if the message has none.");
        }

        return (int) $version;
    }

    public function aggregateRootId(): ?AggregateRootId
    {
        return $this->headers[Header::AGGREGATE_ROOT_ID] ?? null;
    }

    public function header(string $key)
    {
        return $this->headers[$key] ?? null;
    }

    public function headers(): array
    {
        return $this->headers;
    }

    public function event(): object
    {
        return $this->event;
    }
}