<?php

declare(strict_types=1);

use Rector\Bridge\SetRectorsResolver;

use Rector\Scripts\Finder\RectorClassFinder;

use Rector\Scripts\Finder\RectorSetFilesFinder;

use Symfony\Component\Console\Input\ArrayInput;

use Symfony\Component\Console\Output\ConsoleOutput;

use Symfony\Component\Console\Style\SymfonyStyle;

require __DIR__ . '/../vendor/autoload.php';

// 1. find all rector rules in here and in all vendor/rector dirs

$rectorClassFinder = new RectorClassFinder();

$rectorClasses = $rectorClassFinder->find([

__DIR__ . '/../rules',

__DIR__ . '/../vendor/rector/rector-doctrine',

__DIR__ . '/../vendor/rector/rector-phpunit',

__DIR__ . '/../vendor/rector/rector-symfony',

__DIR__ . '/../vendor/rector/rector-downgrade-php',

]);

$symfonyStyle = new SymfonyStyle(new ArrayInput([]), new ConsoleOutput());

$symfonyStyle->writeln(sprintf('<fg=green>Found Rector %d rules</>', count($rectorClasses)));

$rectorSeFinder = new RectorSetFilesFinder();

$rectorSetFiles = $rectorSeFinder->find([

__DIR__ . '/../config/set',

__DIR__ . '/../vendor/rector/rector-symfony/config/sets',

__DIR__ . '/../vendor/rector/rector-doctrine/config/sets',

__DIR__ . '/../vendor/rector/rector-phpunit/config/sets',

__DIR__ . '/../vendor/rector/rector-downgrade-php/config/set',

]);

$symfonyStyle->writeln(sprintf('<fg=green>Found %d sets</>', count($rectorSetFiles)));

$usedRectorClassResolver = new UsedRectorClassResolver();

$usedRectorRules = $usedRectorClassResolver->resolve($rectorSetFiles);

$symfonyStyle->newLine();

$symfonyStyle->writeln(sprintf('<fg=yellow>Found %d used Rector rules in sets</>', count($usedRectorRules)));

$unusedRectorRules = array_diff($rectorClasses, $usedRectorRules);

$symfonyStyle->newLine();

$symfonyStyle->listing($unusedRectorRules);

$symfonyStyle->writeln(

sprintf('<fg=yellow;options=bold>Found %d Rector rules not in any set</>', count($unusedRectorRules))

);

$symfonyStyle->newLine();

final class UsedRectorClassResolver

{

/**

* @param string[] $rectorSetFiles

* @return string[]

*/

public function resolve(array $rectorSetFiles): array

{

$setRectorsResolver = new SetRectorsResolver();

$rulesConfiguration = $setRectorsResolver->resolveFromFilePathsIncludingConfiguration($rectorSetFiles);

$usedRectorRules = [];

foreach ($rulesConfiguration as $ruleConfiguration) {

$usedRectorRules[] = is_string($ruleConfiguration) ? $ruleConfiguration : array_keys($ruleConfiguration)[0];

}

sort($usedRectorRules);

return array_unique($usedRectorRules);

}

}