<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Enqueue\MessengerAdapter;

use Interop\Queue\Context;
use Symfony\Component\Messenger\Transport\TransportFactoryInterface;
use Symfony\Component\Messenger\Transport\TransportInterface;
use Symfony\Component\Messenger\Transport\Serialization\SerializerInterface;
use Psr\Container\ContainerInterface;

/**
 * Symfony Messenger transport factory.
 *
 * @author Samuel Roze <samuel.roze@gmail.com>
 */
class QueueInteropTransportFactory implements TransportFactoryInterface
{
    private $serializer;
    private $debug;
    private $container;

    public function __construct(SerializerInterface $serializer, ContainerInterface $container, bool $debug = false)
    {
        $this->serializer = $serializer;
        $this->container = $container;
        $this->debug = $debug;
    }

    // BC layer for Symfony 4.1 beta1
    public function createReceiver(string $dsn, array $options): TransportInterface
    {
        return $this->createTransport($dsn, $options);
    }

    // BC layer for Symfony 4.1 beta1
    public function createSender(string $dsn, array $options): TransportInterface
    {
        return $this->createTransport($dsn, $options);
    }

    public function createTransport(string $dsn, array $options, SerializerInterface $serializer = null): TransportInterface
    {
        [$contextManager, $dsnOptions] = $this->parseDsn($dsn);

        $options = array_merge($dsnOptions, $options);

        return new QueueInteropTransport(
            $serializer ?? $this->serializer,
            $contextManager,
            $options,
            $this->debug
        );
    }

    public function supports(string $dsn, array $options): bool
    {
        return 0 === strpos($dsn, 'enqueue://');
    }

    private function parseDsn(string $dsn): array
    {
        $parsedDsn = parse_url($dsn);
        $enqueueContextName = $parsedDsn['host'];

        $amqpOptions = array();
        if (isset($parsedDsn['query'])) {
            parse_str($parsedDsn['query'], $parsedQuery);
            $parsedQuery = array_map(function ($e) {
                return is_numeric($e) ? (int) $e : $e;
            }, $parsedQuery);
            $amqpOptions = array_replace_recursive($amqpOptions, $parsedQuery);
        }

        if (!$this->container->has($contextService = 'enqueue.transport.'.$enqueueContextName.'.context')) {
            throw new \RuntimeException(sprintf(
                'Can\'t find Enqueue\'s transport named "%s": Service "%s" is not found.',
                $enqueueContextName,
                $contextService
            ));
        }

        $context = $this->container->get($contextService);
        if (!$context instanceof Context) {
            throw new \RuntimeException(sprintf('Service "%s" not instanceof context', $contextService));
        }

        return array(
            new AmqpContextManager($context),
            $amqpOptions,
        );
    }
}