class WifiNetwork { const WifiNetwork({ required this.ssid, required this.signal, required this.security, }); final String ssid; final int signal; final String security; factory WifiNetwork.fromJson(Map json) { return WifiNetwork( ssid: json['ssid'] as String? ?? '', signal: json['signal'] as int? ?? 0, security: json['security'] as String? ?? 'Unknown', ); } String get signalLabel => '$signal dBm'; }