ClientResolver.php

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<?php
namespace Magento\AdvancedSearch\Model\Client;

use \Magento\Framework\ObjectManagerInterface;
use Magento\Framework\Search\EngineResolverInterface;

class ClientResolver
{
    protected $scopeConfig;

    protected $objectManager;

    private $clientFactoryPool;

    private $clientOptionsPool;

    private $engineResolver;

    protected $path;

    protected $scope;

    public function __construct(
        ObjectManagerInterface $objectManager,
        array $clientFactories,
        array $clientOptions,
        EngineResolverInterface $engineResolver
    ) {
        $this->objectManager = $objectManager;
        $this->clientFactoryPool = $clientFactories;
        $this->clientOptionsPool = $clientOptions;
        $this->engineResolver = $engineResolver;
    }

    public function getCurrentEngine()
    {
        return $this->engineResolver->getCurrentSearchEngine();
    }

    public function create($engine = '', array $data = [])
    {
        $engine = $engine ?: $this->getCurrentEngine();

        if (!isset($this->clientFactoryPool[$engine])) {
            throw new \LogicException(
                'There is no such client factory: ' . $engine
            );
        }
        $factoryClass = $this->clientFactoryPool[$engine];
        $factory = $this->objectManager->create($factoryClass);
        if (!($factory instanceof ClientFactoryInterface)) {
            throw new \InvalidArgumentException(
                'Client factory must implement \Magento\AdvancedSearch\Model\Client\ClientFactoryInterface'
            );
        }

        $optionsClass = $this->clientOptionsPool[$engine];
        $clientOptions = $this->objectManager->create($optionsClass);
        if (!($clientOptions instanceof ClientOptionsInterface)) {
            throw new \InvalidArgumentException(
                'Client options must implement \Magento\AdvancedSearch\Model\Client\ClientInterface'
            );
        }

        $client = $factory->create($clientOptions->prepareClientOptions($data));

        return $client;
    }
}