database connection reset and reconnect method added

[techmahedy]

Some new function added to handle long-running DB operation

 /**
     * Disconnect from the database and clean up resources
     *
     * @param string|null $connection
     * @return bool
     */
    public function disconnect(?string $connection = null): bool
    {
        $connection = $connection ?: config('database.default');

        try {
            if (isset(static::$connections[$connection])) {
                static::$connections[$connection] = null;
                unset(static::$connections[$connection]);
            }

            if (isset(static::$drivers[$connection])) {
                static::$drivers[$connection] = null;
                unset(static::$drivers[$connection]);
            }

            if (isset(static::$transactions[$connection])) {
                static::$transactions[$connection] = 0;
            }

            return true;
        } catch (\Throwable $e) {
            if (function_exists('error_log')) {
                error("Failed to disconnect database connection [{$connection}]: " . $e->getMessage());
            }

            return false;
        }
    }

    /**
     * Reconnect to the database
     *
     * @param string|null $connection
     * @return PDO
     * @throws \RuntimeException
     */
    public function reconnect(?string $connection = null): PDO
    {
        $connection = $connection ?: config('database.default');

        static::disconnect($connection);

        return static::getPdoInstance($connection);
    }

    /**
     * Check if connection is alive
     *
     * @param string|null $connection
     * @return bool
     */
    public function isConnected(?string $connection = null): bool
    {
        $connection = $connection ?: config('database.default');

        if (!isset(static::$connections[$connection])) {
            return false;
        }

        try {
            $stmt = static::$connections[$connection]->query('SELECT 1');
            return $stmt !== false;
        } catch (\PDOException $e) {
            return false;
        }
    }

    /**
     * Get a fresh database connection (new instance)
     *
     * @param string|null $connection
     * @return PDO
     */
    public function getFreshConnection(?string $connection = null): PDO
    {
        $connection = $connection ?: config('database.default');
        $config = config("database.connections.{$connection}");

        if (empty($config)) {
            throw new \RuntimeException("Database connection [{$connection}] not configured.");
        }

        $driver = ConnectionFactory::createDriver($config);

        return $driver->connect($config);
    }

    /**
     * Clean up all database connections
     *
     * @return void
     */
    public function cleanupAllConnections(): void
    {
        foreach (array_keys(static::$connections) as $connection) {
            static::disconnect($connection);
        }

        // Clear all arrays
        static::$connections = [];
        static::$drivers = [];
        static::$transactions = [];
    }