<?php
/**
 * Idempotent database migration runner.
 *
 * @package Leanmerce\CommerceCompliance
 */

namespace Leanmerce\CommerceCompliance\Infrastructure\Database;

if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

use Leanmerce\CommerceCompliance\Infrastructure\Database\Migration\CreateSharedTables;
use Leanmerce\CommerceCompliance\Infrastructure\Database\Migration\EnhancePhase7DocumentTables;
use Leanmerce\CommerceCompliance\Infrastructure\Database\Migration\EnhancePhase10ExternalDocuments;

final class MigrationRunner {
	public const OPTION_DB_VERSION = 'lmcc_db_version';
	public const TARGET_VERSION    = 3;

	public static function maybe_migrate(): bool {
		if ( ! function_exists( 'get_option' ) || ! function_exists( 'update_option' ) ) {
			return true;
		}

		$current = (int) get_option( self::OPTION_DB_VERSION, 0 );
		if ( $current > self::TARGET_VERSION ) {
			return false;
		}

		if ( self::TARGET_VERSION === $current ) {
			return true;
		}

		$migrations = array( new CreateSharedTables(), new EnhancePhase7DocumentTables(), new EnhancePhase10ExternalDocuments() );
		foreach ( $migrations as $migration ) {
			if ( $migration->version() <= $current ) {
				continue;
			}
			if ( ! $migration->run() ) {
				return false;
			}
			update_option( self::OPTION_DB_VERSION, $migration->version(), false );
			$current = $migration->version();
		}

		return self::TARGET_VERSION === $current;
	}

	private function __construct() {}
}