<?php

/*
* This file is part of Composer.
*
* (c) Nils Adermann <naderman@naderman.de>
* Jordi Boggiano <j.boggiano@seld.be>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/

namespace Composer\Command;

use Composer\Cache;
use Composer\Factory;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

/**
* @author David Neilsen <petah.p@gmail.com>
*/
class ClearCacheCommand extends BaseCommand
{
protected function configure()
{
$this
->setName('clear-cache')
->setAliases(array('clearcache', 'cc'))
->setDescription('Clears composer\'s internal package cache.')
->setHelp(
<<<EOT
The <info>clear-cache</info> deletes all cached packages from composer's
cache directory.

Read more at https://getcomposer.org/doc/03-cli.md#clear-cache-clearcache-cc
EOT
)
;
}

protected function execute(InputInterface $input, OutputInterface $output)
{
$config = Factory::createConfig();
$io = $this->getIO();

$cachePaths = array(
'cache-vcs-dir' => $config->get('cache-vcs-dir'),
'cache-repo-dir' => $config->get('cache-repo-dir'),
'cache-files-dir' => $config->get('cache-files-dir'),
'cache-dir' => $config->get('cache-dir'),
);

foreach ($cachePaths as $key => $cachePath) {
$cachePath = realpath($cachePath);
if (!$cachePath) {
$io->writeError("<info>Cache directory does not exist ($key): $cachePath</info>");

continue;
}
$cache = new Cache($io, $cachePath);
if (!$cache->isEnabled()) {
$io->writeError("<info>Cache is not enabled ($key): $cachePath</info>");

continue;
}

$io->writeError("<info>Clearing cache ($key): $cachePath</info>");
$cache->clear();
}

$io->writeError('<info>All caches cleared.</info>');

return 0;
}
}