<?php

declare(strict_types=1);

namespace DoctrineMigrations;

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

/**
 * Auto-generated Migration: Please modify to your needs!
 */
final class Version20260906172225 extends AbstractMigration
{
    public function getDescription(): string
    {
        return 'Add encounter table; combatants belong to an encounter';
    }

    public function up(Schema $schema): void
    {
        $this->addSql('CREATE TABLE encounter (id INT AUTO_INCREMENT NOT NULL, name VARCHAR(120) NOT NULL, created_at DATETIME NOT NULL, updated_at DATETIME NOT NULL, PRIMARY KEY (id)) DEFAULT CHARACTER SET utf8mb4 ENGINE = InnoDB');

        // add nullable first, rehome any pre-existing combatants, then enforce
        $this->addSql('ALTER TABLE combatant ADD encounter_id INT DEFAULT NULL');
        $this->addSql("INSERT INTO encounter (name, created_at, updated_at) SELECT 'Combat', NOW(), NOW() FROM DUAL WHERE EXISTS (SELECT 1 FROM combatant WHERE encounter_id IS NULL)");
        $this->addSql('UPDATE combatant SET encounter_id = (SELECT MAX(id) FROM encounter) WHERE encounter_id IS NULL');

        $this->addSql('ALTER TABLE combatant ADD CONSTRAINT FK_807DA381D6E2FADC FOREIGN KEY (encounter_id) REFERENCES encounter (id) ON DELETE CASCADE');
        $this->addSql('CREATE INDEX IDX_807DA381D6E2FADC ON combatant (encounter_id)');
        $this->addSql('ALTER TABLE combatant CHANGE encounter_id encounter_id INT NOT NULL');
    }

    public function down(Schema $schema): void
    {
        $this->addSql('ALTER TABLE combatant DROP FOREIGN KEY FK_807DA381D6E2FADC');
        $this->addSql('DROP INDEX IDX_807DA381D6E2FADC ON combatant');
        $this->addSql('ALTER TABLE combatant DROP encounter_id');
        $this->addSql('DROP TABLE encounter');
    }
}