<?php

declare(strict_types=1);

namespace OCA\EducAI\Migration;

use Closure;
use OCP\DB\ISchemaWrapper;
use OCP\DB\Types;
use OCP\Migration\IOutput;
use OCP\Migration\SimpleMigrationStep;

/**
 * Add a persistent root registry for scalable wiki index event handling.
 */
class Version023701Date20260504010000 extends SimpleMigrationStep {
	/**
	 * @param IOutput $output
	 * @param Closure(): ISchemaWrapper $schemaClosure
	 * @param array<string,mixed> $options
	 */
	public function changeSchema(IOutput $output, Closure $schemaClosure, array $options): ?ISchemaWrapper {
		/** @var ISchemaWrapper $schema */
		$schema = $schemaClosure();

		if (!$schema->hasTable('educai_wiki_roots')) {
			$table = $schema->createTable('educai_wiki_roots');
			$table->addColumn('id', Types::BIGINT, [
				'autoincrement' => true,
				'notnull' => true,
				'unsigned' => true,
			]);
			$table->addColumn('root_node_id', Types::BIGINT, [
				'notnull' => true,
				'unsigned' => true,
			]);
			$table->addColumn('root_path', Types::STRING, [
				'notnull' => true,
				'length' => 1024,
			]);
			$table->addColumn('location', Types::STRING, [
				'notnull' => true,
				'length' => 32,
				'default' => 'personal_files',
			]);
			$table->addColumn('collective_id', Types::BIGINT, [
				'notnull' => false,
				'unsigned' => true,
			]);
			$table->addColumn('active', Types::BOOLEAN, [
				'notnull' => true,
				'default' => true,
			]);
			$table->addColumn('last_synced_at', Types::BIGINT, [
				'notnull' => false,
				'unsigned' => true,
			]);
			$table->addColumn('last_error', Types::TEXT, [
				'notnull' => false,
			]);
			$table->addColumn('created_at', Types::BIGINT, [
				'notnull' => true,
				'unsigned' => true,
			]);
			$table->addColumn('updated_at', Types::BIGINT, [
				'notnull' => true,
				'unsigned' => true,
			]);

			$table->setPrimaryKey(['id']);
			$table->addUniqueIndex(['root_node_id'], 'educai_wiki_root_node_u');
			$table->addIndex(['active'], 'educai_wiki_root_active_i');
		}

		if (!$schema->hasTable('educai_wiki_root_bots')) {
			$table = $schema->createTable('educai_wiki_root_bots');
			$table->addColumn('id', Types::BIGINT, [
				'autoincrement' => true,
				'notnull' => true,
				'unsigned' => true,
			]);
			$table->addColumn('root_id', Types::BIGINT, [
				'notnull' => true,
				'unsigned' => true,
			]);
			$table->addColumn('bot_id', Types::BIGINT, [
				'notnull' => true,
				'unsigned' => true,
			]);
			$table->addColumn('config_hash', Types::STRING, [
				'notnull' => true,
				'length' => 64,
			]);
			$table->addColumn('active', Types::BOOLEAN, [
				'notnull' => true,
				'default' => true,
			]);
			$table->addColumn('created_at', Types::BIGINT, [
				'notnull' => true,
				'unsigned' => true,
			]);
			$table->addColumn('updated_at', Types::BIGINT, [
				'notnull' => true,
				'unsigned' => true,
			]);

			$table->setPrimaryKey(['id']);
			$table->addUniqueIndex(['bot_id'], 'educai_wiki_root_bot_u');
			$table->addIndex(['root_id'], 'educai_wiki_root_bot_root_i');
		}

		return $schema;
	}
}