<?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\Bundle\SecurityBundle\DependencyInjection\Compiler;

use Symfony\Component\DependencyInjection\Argument\IteratorArgument;
use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
use Symfony\Component\DependencyInjection\Compiler\PriorityTaggedServiceTrait;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\DependencyInjection\Exception\LogicException;
use Symfony\Component\DependencyInjection\Reference;
use Symfony\Component\Security\Core\Authorization\Voter\TraceableVoter;
use Symfony\Component\Security\Core\Authorization\Voter\VoterInterface;

/**
 * Adds all configured security voters to the access decision manager.
 *
 * @author Johannes M. Schmitt <schmittjoh@gmail.com>
 */
class AddSecurityVotersPass implements CompilerPassInterface
{
    use PriorityTaggedServiceTrait;

    /**
     * @return void
     */
    public function process(ContainerBuilder $container)
    {
        if (!$container->hasDefinition('security.access.decision_manager')) {
            return;
        }

        $voters = $this->findAndSortTaggedServices('security.voter', $container);
        if (!$voters) {
            throw new LogicException('No security voters found. You need to tag at least one with "security.voter".');
        }

        $debug = $container->getParameter('kernel.debug');
        $voterServices = [];
        foreach ($voters as $voter) {
            $voterServiceId = (string) $voter;
            $definition = $container->getDefinition($voterServiceId);

            $class = $container->getParameterBag()->resolveValue($definition->getClass());

            if (!is_a($class, VoterInterface::class, true)) {
                throw new LogicException(sprintf('"%s" must implement the "%s" when used as a voter.', $class, VoterInterface::class));
            }

            if ($debug) {
                $voterServices[] = new Reference($debugVoterServiceId = '.debug.security.voter.'.$voterServiceId);

                $container
                    ->register($debugVoterServiceId, TraceableVoter::class)
                    ->addArgument($voter)
                    ->addArgument(new Reference('event_dispatcher'));
            } else {
                $voterServices[] = $voter;
            }
        }

        $container->getDefinition('security.access.decision_manager')
            ->replaceArgument(0, new IteratorArgument($voterServices));
    }
}
