<?php
/**
*
* This file is part of the phpBB Forum Software package.
*
* @copyright (c) phpBB Limited <https://www.phpbb.com>
* @license GNU General Public License, version 2 (GPL-2.0)
*
* For full copyright and license information, please see
* the docs/CREDITS.txt file.
*
*/
namespace phpbb\console\command\dev;

use Symfony\Component\Console\Command\Command as symfony_command;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

class migration_tips extends \phpbb\console\command\command
{
	/** @var \phpbb\extension\manager */
	protected $extension_manager;

	public function __construct(\phpbb\user $user, \phpbb\extension\manager $extension_manager)
	{
		$this->extension_manager = $extension_manager;
		parent::__construct($user);
	}

	/**
	 * {@inheritdoc}
	 */
	protected function configure()
	{
		$this
			->setName('dev:migration-tips')
			->setDescription($this->user->lang('CLI_DESCRIPTION_FIND_MIGRATIONS'))
		;
	}

	/**
	 * Executes the command dev:migration-tips.
	 *
	 * Finds migrations that are not depended upon
	 *
	 * @param InputInterface  $input  An InputInterface instance
	 * @param OutputInterface $output An OutputInterface instance
	 *
	 * @return int
	 */
	protected function execute(InputInterface $input, OutputInterface $output)
	{
		$migrations = $this->extension_manager->get_finder()
			->set_extensions(array())
			->core_path('phpbb/db/migration/data/')
			->get_classes();
		$tips = $migrations;

		foreach ($migrations as $migration_class)
		{
			foreach ($migration_class::depends_on() as $dependency)
			{
				$tips_key = array_search($dependency, $tips);
				if ($tips_key !== false)
				{
					unset($tips[$tips_key]);
				}
			}
		}

		$output->writeln("\t\t[");
		foreach ($tips as $migration)
		{
			$output->writeln("\t\t\t'{$migration}',");
		}
		$output->writeln("\t\t];");

		return symfony_command::SUCCESS;
	}
}
