<?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 Symfony\Component\Console\CommandLoader;

use Psr\Container\ContainerInterface;
use Symfony\Component\Console\Exception\CommandNotFoundException;

/**
* Loads commands from a PSR-11 container.
*
* @author Robin Chalas <robin.chalas@gmail.com>
*/
class ContainerCommandLoader implements CommandLoaderInterface
{
private $container;
private $commandMap;

/**
* @param array $commandMap An array with command names as keys and service ids as values
*/
public function __construct(ContainerInterface $container, array $commandMap)
{
$this->container = $container;
$this->commandMap = $commandMap;
}

/**
* {@inheritdoc}
*/
public function get($name)
{
if (!$this->has($name)) {
throw new CommandNotFoundException(sprintf('Command "%s" does not exist.', $name));
}

return $this->container->get($this->commandMap[$name]);
}

/**
* {@inheritdoc}
*/
public function has($name)
{
return isset($this->commandMap[$name]) && $this->container->has($this->commandMap[$name]);
}

/**
* {@inheritdoc}
*/
public function getNames()
{
return array_keys($this->commandMap);
}
}