<?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\Adapter\Sql\Action\Query;

use Doctrine\DBAL\Connection;
use Fusio\Engine\ActionAbstract;
use Fusio\Engine\Exception\ConfigurationException;
use Fusio\Engine\Form\BuilderInterface;
use Fusio\Engine\Form\ElementFactoryInterface;
use Fusio\Engine\ParametersInterface;
use Fusio\Engine\RequestInterface;

/**
 * SqlQueryAbstract
 *
 * @author  Christoph Kappestein <christoph.kappestein@gmail.com>
 * @license http://www.gnu.org/licenses/agpl-3.0
 * @link    https://www.fusio-project.org/
 */
abstract class SqlQueryAbstract extends ActionAbstract
{
    public function configure(BuilderInterface $builder, ElementFactoryInterface $elementFactory): void
    {
        $builder->add($elementFactory->newConnection('connection', 'Connection', 'The SQL connection which should be used'));
        $builder->add($elementFactory->newTextArea('sql', 'SQL', 'sql', 'The SQL to query the database'));
    }

    protected function getConnection(ParametersInterface $configuration): Connection
    {
        $connection = $this->connector->getConnection($configuration->get('connection'));
        if (!$connection instanceof Connection) {
            throw new ConfigurationException('Given connection must be a DBAL connection');
        }

        return $connection;
    }

    protected function parseSql(string $query, RequestInterface $request): array
    {
        $params = [];
        $query = preg_replace_callback('/\{(\%?)(\w+)(\%?)\}/', static function($matches) use ($request, &$params){
            $left  = $matches[1];
            $name  = $matches[2];
            $right = $matches[3];
            $value = $request->get($name);

            if (!empty($left)) {
                $value = '%' . $value;
            }
            if (!empty($right)) {
                $value = $value . '%';
            }

            $params[$name] = $value;

            return ':' . $name;
        }, $query);

        return [
            $query,
            $params,
        ];
    }
}
