/**
* @param Event $event
* @return string
* @throws UnknownEventException
*/
private function serizlize(Event $event)
{
if ($event instanceof CustomerPlacedOrder) {
return json_encode(['name' => Events::CUSTOMER_PLACED_ORDER, 'order_id' => $event->orderId(), 'date' => $event->date()->format('Y-m-d H:i:s')]);
}
throw UnknownEventException::unsupported(get_class($event));
}
/**
* @param string $eventJson
* @throws UnknownEventException
*/
public function on(string $eventJson)
{
$data = json_decode($eventJson, true);
if (!array_key_exists('name', $data) || $data['name'] !== Events::CUSTOMER_PLACED_ORDER) {
throw UnknownEventException::unexpected(Events::CUSTOMER_PLACED_ORDER, $data['name']);
}
$this->orders->add(new Order(new OrderId($data['order_id']), new \DateTimeImmutable($data['date'])));
}