<?php

/**
 * Chill is a software for social workers
 *
 * For the full copyright and license information, please view
 * the LICENSE file that was distributed with this source code.
 */

declare(strict_types=1);

namespace Chill\Migrations\Person;

use Doctrine\DBAL\Schema\Schema;
use Doctrine\Migrations\AbstractMigration;

/**
 * Add constraint with a index on chill_person_relationships.
 */
final class Version20220425000000 extends AbstractMigration
{
    public function down(Schema $schema): void
    {
        $this->addSql('DROP INDEX IDX_RELATIONSHIPS000');
    }

    public function getDescription(): string
    {
        return 'Add constraint with a index on chill_person_relationships.';
    }

    public function up(Schema $schema): void
    {
        $this->addSql('CREATE UNIQUE INDEX IDX_RELATIONSHIPS000 ON chill_person_relationships (least(fromperson_id, toperson_id), greatest(fromperson_id, toperson_id))');
    }
}