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<?php

/*
 * This file is part of the Predis package.
 *
 * (c) 2009-2020 Daniele Alessandri
 * (c) 2021-2023 Till Krüss
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Predis\Configuration;

/**
 * Default client options container for Predis\Client.
 *
 * Pre-defined options have their specialized handlers that can filter, convert
 * an lazily initialize values in a mini-DI container approach.
 *
 * {@inheritdoc}
 */
class Options implements OptionsInterface
{
    /** @var array */
    protected $handlers = [
        'aggregate' => Option\Aggregate::class,
        'cluster' => Option\Cluster::class,
        'replication' => Option\Replication::class,
        'connections' => Option\Connections::class,
        'commands' => Option\Commands::class,
        'exceptions' => Option\Exceptions::class,
        'prefix' => Option\Prefix::class,
        'crc16' => Option\CRC16::class,
    ];

/** @var array */
    protected $options = [];

/** @var array */
    protected $input;

/**
     * @param array $options Named array of client options
     */
    public function __construct(array $options = null)
    {
        $this->input = $options ?? [];
    }

/**
     * {@inheritdoc}
     */
    public function getDefault($option)
    {
        if (isset($this->handlers[$option])) {
            $handler = $this->handlers[$option];
            $handler = new $handler();

return $handler->getDefault($this);
        }
    }

/**
     * {@inheritdoc}
     */
    public function defined($option)
    {
        return
            array_key_exists($option, $this->options)
            || array_key_exists($option, $this->input)
        ;
    }

/**
     * {@inheritdoc}
     */
    public function __isset($option)
    {
        return (
            array_key_exists($option, $this->options)
            || array_key_exists($option, $this->input)
        ) && $this->__get($option) !== null;
    }

/**
     * {@inheritdoc}
     */
    public function __get($option)
    {
        if (isset($this->options[$option]) || array_key_exists($option, $this->options)) {
            return $this->options[$option];
        }

if (isset($this->input[$option]) || array_key_exists($option, $this->input)) {
            $value = $this->input[$option];
            unset($this->input[$option]);

if (isset($this->handlers[$option])) {
                $handler = $this->handlers[$option];
                $handler = new $handler();
                $value = $handler->filter($this, $value);
            } elseif (is_object($value) && method_exists($value, '__invoke')) {
                $value = $value($this);
            }

return $this->options[$option] = $value;
        }

if (isset($this->handlers[$option])) {
            return $this->options[$option] = $this->getDefault($option);
        }

return;
    }
}