<?php
/*
 * This file is part of Part-DB (https://github.com/Part-DB/Part-DB-symfony).
 *
 *  Copyright (C) 2019 - 2024 Jan Böhmer (https://github.com/jbtronics)
 *
 *  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
 *  (at your option) 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 <https://www.gnu.org/licenses/>.
 */

declare(strict_types=1);


namespace App\Doctrine\Functions;

use Doctrine\DBAL\Driver\AbstractPostgreSQLDriver;
use Doctrine\DBAL\Platforms\MariaDBPlatform;
use Doctrine\DBAL\Platforms\PostgreSQLPlatform;
use Doctrine\ORM\Query\AST\Functions\FunctionNode;
use Doctrine\ORM\Query\AST\Node;
use Doctrine\ORM\Query\Parser;
use Doctrine\ORM\Query\SqlWalker;
use Doctrine\ORM\Query\TokenType;

class Natsort extends FunctionNode
{
    private ?Node $field = null;

    public function parse(Parser $parser): void
    {
        $parser->match(TokenType::T_IDENTIFIER);
        $parser->match(TokenType::T_OPEN_PARENTHESIS);

        $this->field = $parser->ArithmeticExpression();

        $parser->match(TokenType::T_CLOSE_PARENTHESIS);
    }

    public function getSql(SqlWalker $sqlWalker): string
    {
        assert($this->field !== null, 'Field is not set');

        $platform = $sqlWalker->getConnection()->getDatabasePlatform();

        if ($platform instanceof PostgreSQLPlatform) {
            return $this->field->dispatch($sqlWalker) . ' COLLATE numeric';
        }

        /*if ($platform instanceof MariaDBPlatform && $sqlWalker->getConnection()->getServerVersion()) {

        }*/

         //For every other platform, return the field as is
        return $this->field->dispatch($sqlWalker);
    }


}