<?php
/*
 * Fusio
 * A web-application to create dynamically RESTful APIs
 *
 * Copyright (C) 2015-2022 Christoph Kappestein <christoph.kappestein@gmail.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

namespace Fusio\Engine\Parser;

use Fusio\Engine\Factory\FactoryInterface;
use Fusio\Engine\Form;

/**
 * Directory
 *
 * @author  Christoph Kappestein <christoph.kappestein@gmail.com>
 * @license http://www.gnu.org/licenses/agpl-3.0
 * @link    https://www.fusio-project.org
 */
class Directory extends ParserAbstract
{
    private string $directory;
    private string $namespace;
    private string $instanceOf;

    public function __construct(FactoryInterface $factory, Form\ElementFactoryInterface $elementFactory, string $directory, string $namespace, string $instanceOf)
    {
        parent::__construct($factory, $elementFactory);

        $this->directory  = $directory;
        $this->namespace  = $namespace;
        $this->instanceOf = $instanceOf;
    }

    public function getClasses(): array
    {
        $result = array();
        $path   = realpath($this->directory);

        if (is_dir($path)) {
            $iterator = new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($path));
            foreach ($iterator as $file) {
                /** @var \SplFileInfo $file */
                if ($file->getExtension() == 'php') {
                    $namespace = substr($file->getPath(), strlen($path) + 1);
                    $namespace = str_replace('/', '\\', $namespace);

                    if (!empty($namespace)) {
                        $class = $this->namespace . '\\' . $namespace . '\\' . $file->getBasename('.php');
                    } else {
                        $class = $this->namespace . '\\' . $file->getBasename('.php');
                    }

                    $object     = $this->getObject($class);
                    $instanceOf = $this->instanceOf;

                    if ($object instanceof $instanceOf) {
                        $result[] = array(
                            'name'  => $object->getName(),
                            'class' => $class,
                        );
                    }
                }
            }
        }

        array_multisort($result, SORT_ASC, array_column($result, 'name'));

        return $result;
    }
}
