<?php

namespace App\Domain\Event;

use App\Domain\Event\PersistEvent;
use App\Domain\Model\Persisted\PersistedEvent;
use App\Infrastructure\Repository\EventRepository;

class PersistEventHandler
{
    public function __construct(
        private readonly EventRepository $eventRepository,
    ) {
    }

    public function handle(PersistEvent $event): void
    {
        $persistedEvent = new PersistedEvent();
        if ($event->id !== null) {
            $persistedEvent = $this->eventRepository->find($event->id);
            if (!$persistedEvent) {
                throw new \Exception('Event not found');
            }
        }

        $this->eventRepository->save($event->draft->mergeIntoPersisted($persistedEvent));
    }
}