for testing and deploying your application
for finding and fixing issues
for empowering human code reviews
<?php declare(strict_types=1);
namespace Stratadox\CardGame\EventHandler;
use function assert;
use Stratadox\CardGame\DomainEvent;
use Stratadox\CardGame\ReadModel\PageVisitsStatisticsReport;
use Stratadox\CardGame\Visiting\BroughtVisitor;
use Stratadox\CardGame\Visiting\VisitedPage;
final class StatisticsUpdater implements EventHandler
{
private $statistics;
public function __construct(PageVisitsStatisticsReport $statistics)
$this->statistics = $statistics;
}
public function events(): iterable
return [BroughtVisitor::class, VisitedPage::class];
public function handle(DomainEvent $event): void
if ($event instanceof BroughtVisitor) {
$this->newVisitor($event);
} else {
assert($event instanceof VisitedPage);
$this->recurringVisitor($event);
private function newVisitor(BroughtVisitor $event): void
$this->statistics->firstVisitFrom($event->aggregateId());
private function recurringVisitor(VisitedPage $event): void
if ($event->isFirstVisit()) {
$this->statistics->firstVisitTo($event->page());
$this->statistics->visit($event->page(), $event->source());
Stratadox /
CardGame
