/// Configuration for an iperf3 client test.
class TestConfiguration {
  final String server;
  final int port;
  final Duration duration;
  final int interval;
  final int parallelStreams;

  const TestConfiguration({
    this.server = 'iperf.es.net',
    this.port = 5201,
    this.duration = const Duration(seconds: 10),
    this.interval = 1,
    this.parallelStreams = 1,
  });

  /// Convert to iperf3 CLI arguments.
  List<String> toCliArgs() {
    return <String>[
      '-c', server,
      '-p', '$port',
      '-t', '${duration.inSeconds}',
      '-i', '$interval',
      '-P', '$parallelStreams',
    ];
  }

  /// Validate the configuration.
  bool get isValid {
    if (server.isEmpty) return false;
    if (port < 1 || port > 65535) return false;
    if (duration.inSeconds < 1) return false;
    if (interval < 1) return false;
    if (parallelStreams < 1) return false;
    return true;
  }
}