<?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\Config\Resource;

/**
* ComposerResource tracks the PHP version and Composer dependencies.
*
* @author Nicolas Grekas <p@tchwork.com>
*
* @final since Symfony 4.3
*/
class ComposerResource implements SelfCheckingResourceInterface
{
private $vendors;

private static $runtimeVendors;

public function __construct()
{
self::refresh();
$this->vendors = self::$runtimeVendors;
}

public function getVendors()
{
return array_keys($this->vendors);
}

public function __toString()
{
return __CLASS__;
}

/**
* {@inheritdoc}
*/
public function isFresh($timestamp)
{
self::refresh();

return array_values(self::$runtimeVendors) === array_values($this->vendors);
}

private static function refresh()
{
self::$runtimeVendors = [];

foreach (get_declared_classes() as $class) {
if ('C' === $class[0] && str_starts_with($class, 'ComposerAutoloaderInit')) {
$r = new \ReflectionClass($class);
$v = \dirname($r->getFileName(), 2);
if (file_exists($v.'/composer/installed.json')) {
self::$runtimeVendors[$v] = @filemtime($v.'/composer/installed.json');
}
}
}
}
}