<?php

declare(strict_types=1);

namespace DoctrineMigrations;

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

final class Version20261029120000 extends AbstractMigration
{
    public function getDescription(): string
    {
        return 'Keys the contingent snapshot by hotel code instead of accommodation, and adds calendar_hotel for TYPO3\'s calendar hotel list.';
    }

    public function up(Schema $schema): void
    {
        $this->addSql('CREATE TABLE calendar_hotel (id INT AUTO_INCREMENT NOT NULL, code VARCHAR(16) NOT NULL, name VARCHAR(255) NOT NULL, UNIQUE INDEX UNIQ_6F075DB777153098 (code), PRIMARY KEY(id)) DEFAULT CHARACTER SET utf8mb4 COLLATE `utf8mb4_unicode_ci` ENGINE = InnoDB');

        // Backfill from the linked accommodation. accommodation_id stays, nullable and no longer
        // written, until a later migration drops it; that keeps this step reversible.
        $this->addSql('ALTER TABLE contingent_day ADD hotel_code VARCHAR(16) DEFAULT NULL, CHANGE accommodation_id accommodation_id INT DEFAULT NULL');
        $this->addSql('UPDATE contingent_day cd INNER JOIN accommodation a ON a.id = cd.accommodation_id SET cd.hotel_code = a.calendar_code');
        $this->addSql('DELETE FROM contingent_day WHERE hotel_code IS NULL OR hotel_code = \'\'');
        $this->addSql('ALTER TABLE contingent_day CHANGE hotel_code hotel_code VARCHAR(16) NOT NULL');
        $this->addSql('DROP INDEX uniq_contingent_day_accommodation_date ON contingent_day');
        $this->addSql('CREATE UNIQUE INDEX uniq_contingent_day_hotel_code_date ON contingent_day (hotel_code, date)');

        $this->addSql('ALTER TABLE contingent_sync_state ADD hotel_code VARCHAR(16) DEFAULT NULL, CHANGE accommodation_id accommodation_id INT DEFAULT NULL');
        $this->addSql('UPDATE contingent_sync_state s INNER JOIN accommodation a ON a.id = s.accommodation_id SET s.hotel_code = a.calendar_code');
        $this->addSql('DELETE FROM contingent_sync_state WHERE hotel_code IS NULL OR hotel_code = \'\'');
        $this->addSql('ALTER TABLE contingent_sync_state CHANGE hotel_code hotel_code VARCHAR(16) NOT NULL');
        $this->addSql('CREATE UNIQUE INDEX UNIQ_737F167CC0D0E610 ON contingent_sync_state (hotel_code)');
    }

    public function down(Schema $schema): void
    {
        // Rows of hotel codes without an accommodation cannot be expressed in the old schema.
        // The snapshot is a cache, so the next sync of the old code rebuilds whatever is lost.
        $this->addSql('UPDATE contingent_day cd INNER JOIN accommodation a ON a.calendar_code = cd.hotel_code SET cd.accommodation_id = a.id');
        $this->addSql('DELETE cd FROM contingent_day cd LEFT JOIN accommodation a ON a.calendar_code = cd.hotel_code WHERE a.id IS NULL');
        $this->addSql('DROP INDEX uniq_contingent_day_hotel_code_date ON contingent_day');
        $this->addSql('ALTER TABLE contingent_day DROP hotel_code, CHANGE accommodation_id accommodation_id INT NOT NULL');
        $this->addSql('CREATE UNIQUE INDEX uniq_contingent_day_accommodation_date ON contingent_day (accommodation_id, date)');

        $this->addSql('UPDATE contingent_sync_state s INNER JOIN accommodation a ON a.calendar_code = s.hotel_code SET s.accommodation_id = a.id');
        $this->addSql('DELETE s FROM contingent_sync_state s LEFT JOIN accommodation a ON a.calendar_code = s.hotel_code WHERE a.id IS NULL');
        $this->addSql('DROP INDEX UNIQ_737F167CC0D0E610 ON contingent_sync_state');
        $this->addSql('ALTER TABLE contingent_sync_state DROP hotel_code, CHANGE accommodation_id accommodation_id INT NOT NULL');

        $this->addSql('DROP TABLE calendar_hotel');
    }
}