<?php

declare(strict_types=1);

namespace DoctrineMigrations;

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

/**
 * Replaces the staffing matrix's split flag with one flag per ski level.
 *
 * A split row takes over every level it has, so it keeps planning the same assignments. The way
 * back folds the two flags into one, which loses a row that takes over one level of two.
 *
 * Written by hand rather than taken from doctrine:migrations:diff, which also carries the
 * pre-existing drift of the dev database.
 */
final class Version20261105100000 extends AbstractMigration
{
    public function getDescription(): string
    {
        return 'Replace staffing_rule.split with split_beginner / split_advanced';
    }

    public function up(Schema $schema): void
    {
        $this->addSql('ALTER TABLE staffing_rule ADD split_beginner TINYINT NOT NULL, ADD split_advanced TINYINT NOT NULL');
        $this->addSql('UPDATE staffing_rule SET split_beginner = split AND ski_beginner, split_advanced = split AND ski_advanced');
        $this->addSql('ALTER TABLE staffing_rule DROP split');
    }

    public function down(Schema $schema): void
    {
        $this->addSql('ALTER TABLE staffing_rule ADD split TINYINT NOT NULL');
        $this->addSql('UPDATE staffing_rule SET split = split_beginner OR split_advanced');
        $this->addSql('ALTER TABLE staffing_rule DROP split_beginner, DROP split_advanced');
    }
}