<?php

namespace DoctrineMigrations;

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

final class Version20260912000100 extends AbstractMigration
{
    public function getDescription(): string
    {
        return 'Website, localized pages and immutable document revisions (schema v1).';
    }

    public function isTransactional(): bool
    {
        return false; // MySQL DDL commits implicitly. Backup before production migrations.
    }

    public function up(Schema $schema): void
    {
        $site = $schema->createTable('website');
        $site->addColumn('id', 'string', ['length' => 64]);
        $site->addColumn('name', 'string', ['length' => 200]);
        $site->addColumn('default_locale', 'string', ['length' => 12]);
        $site->addColumn('theme', 'json');
        $site->setPrimaryKey(['id']);

        $page = $schema->createTable('page');
        $page->addColumn('id', 'string', ['length' => 64]);
        $page->addColumn('website_id', 'string', ['length' => 64]);
        $page->addColumn('slug', 'string', ['length' => 160]);
        $page->addColumn('locale', 'string', ['length' => 12]);
        $page->addColumn('draft_revision_id', 'string', ['length' => 64, 'notnull' => false]);
        $page->addColumn('published_revision_id', 'string', ['length' => 64, 'notnull' => false]);
        $page->addColumn('version', 'integer', ['default' => 0]);
        $page->setPrimaryKey(['id']);
        $page->addUniqueIndex(['website_id', 'locale', 'slug']);
        $page->addForeignKeyConstraint('website', ['website_id'], ['id']);

        $revision = $schema->createTable('revision');
        $revision->addColumn('id', 'string', ['length' => 64]);
        $revision->addColumn('page_id', 'string', ['length' => 64]);
        $revision->addColumn('document', 'json');
        $revision->addColumn('created_at', 'datetime_immutable');
        $revision->setPrimaryKey(['id']);
        $revision->addForeignKeyConstraint('page', ['page_id'], ['id']);
    }

    public function down(Schema $schema): void
    {
        $this->throwIrreversibleMigrationException('Contains customer content. Restore a verified database backup and matching code.');
    }
}