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<?php

declare(strict_types=1);

namespace Mautic\IntegrationsBundle\Sync\Notification\Handler;

use Mautic\IntegrationsBundle\Sync\Exception\HandlerNotSupportedException;

class HandlerContainer
{
    private array $handlers = [];

    public function registerHandler(HandlerInterface $handler): void
    {
        if (!isset($this->handlers[$handler->getIntegration()])) {
            $this->handlers[$handler->getIntegration()] = [];
        }

        $this->handlers[$handler->getIntegration()][$handler->getSupportedObject()] = $handler;
    }

    /**
     * @return HandlerInterface
     *
     * @throws HandlerNotSupportedException
     */
    public function getHandler(string $integration, string $object)
    {
        if (!isset($this->handlers[$integration])) {
            throw new HandlerNotSupportedException("$integration does not have any registered handlers");
        }

        if (!isset($this->handlers[$integration][$object])) {
            throw new HandlerNotSupportedException("$integration does not have any registered handlers for the object $object");
        }

        return $this->handlers[$integration][$object];
    }

    /**
     * @return HandlerInterface[]
     */
    public function getHandlers(): array
    {
        return array_reduce($this->handlers, fn ($accumulator, $integrationHandlers): array => array_merge($accumulator, $integrationHandlers), []);
    }
}