<?php

declare(strict_types=1);

namespace DoctrineMigrations;

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

final class Version20260309160000 extends AbstractMigration
{
    public function getDescription(): string
    {
        return 'Add unique constraint on employee_rtt_payments (employee_id, year, month, rate).';
    }

    public function up(Schema $schema): void
    {
        $this->addSql('CREATE UNIQUE INDEX uniq_rtt_payment_employee_year_month_rate ON employee_rtt_payments (employee_id, year, month, rate)');
    }

    public function down(Schema $schema): void
    {
        $this->addSql('DROP INDEX uniq_rtt_payment_employee_year_month_rate');
    }
}