<?php

declare(strict_types=1);

/*
 * This file is part of PHP CS Fixer.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *     Dariusz Rumiński <dariusz.ruminski@gmail.com>
 *
 * This source file is subject to the MIT license that is bundled
 * with this source code in the file LICENSE.
 */

namespace PhpCsFixer\RuleSet\Sets;

use PhpCsFixer\ConfigurationException\UnresolvableAutoRuleSetConfigurationException;
use PhpCsFixer\RuleSet\AbstractRuleSetDefinition;
use PhpCsFixer\RuleSet\AutomaticRuleSetDefinitionInterface;
use PhpCsFixer\RuleSet\RuleSetDefinitionInterface;

/**
 * @internal
 *
 * @no-named-arguments Parameter names are not covered by the backward compatibility promise.
 */
final class AutoRiskySet extends AbstractRuleSetDefinition implements AutomaticRuleSetDefinitionInterface
{
    public function getName(): string
    {
        return '@'.lcfirst(ltrim(parent::getName(), '@'));
    }

    public function getRules(): array
    {
        $sets = array_filter(
            $this->getCandidates(),
            fn (RuleSetDefinitionInterface $set): bool => $this->isSetDiscoverable($set),
        );
        $sets = array_map(
            static fn (RuleSetDefinitionInterface $set): string => $set->getName(),
            $sets,
        );

        return array_combine($sets, array_fill(0, \count($sets), true));
    }

    public function getDescription(): string
    {
        return 'Default (risky) rule set. Applies newest PER-CS and optimizations for PHP and PHPUnit, based on project\'s "composer.json" file.';
    }

    public function getRulesCandidates(): array
    {
        $sets = array_map(
            static fn (RuleSetDefinitionInterface $set): string => $set->getName(),
            $this->getCandidates()
        );

        return array_combine($sets, array_fill(0, \count($sets), true));
    }

    /** @return list<RuleSetDefinitionInterface> */
    private function getCandidates(): array
    {
        // order matters
        return [
            new PERCSRiskySet(),
            new AutoPHPMigrationRiskySet(),
            new AutoPHPUnitMigrationRiskySet(),
        ];
    }

    private function isSetDiscoverable(RuleSetDefinitionInterface $set): bool
    {
        try {
            $set->getRules();

            return true;
        } catch (UnresolvableAutoRuleSetConfigurationException $unused) {
            return false;
        }
    }
}
