import 'dart:io';

const int minTemp = 15;
const int maxTemp = 30;

void main() {
  bool lighstOn = false;
  int temp = 20;
  bool securityArmed = false;

  while (true) {
    print('\nSmart Home Aotumation system \nChoose an action:');
    print('1. Toggle lights');
    print('2. Set Thermostat Temperature');
    print('3. Arm / Disarm Security system');
    print('4. View system Status');
    print('5. Exit');
    stdout.write('Enter Choose: ');
    String? choice = stdin.readLineSync();

    switch (choice) {
      case '1':
        lighstOn = !lighstOn;
        print('Lights are ${lighstOn ? "ON" : "OFF"}');
        break;

      case '2':
        stdout.write('Enter Temperature ($minTemp-$maxTemp):');
        String? input = stdin.readLineSync();
        int? newTemp = int.tryParse(input ?? '');
        if (newTemp != null && newTemp >= minTemp && newTemp <= maxTemp) {
          temp = newTemp;
          print('Temperatur set to $temp ْC');
        } else {
          print('Invaild Temperature');
        }
        break;

      case '3':
        securityArmed = !securityArmed;
        print('Security system is ${securityArmed ? "ARMED" : "DISARMED"}');
        break;

      case '4':
        String day = "";
        if (temp % 3 == 0 && temp % 5 == 0) {
          day = 'Perfect Day';
        } else if (temp % 3 == 0) {
          day = 'Cool Day';
        } else if (temp % 5 == 0) {
          day = 'Warm Day';
        }
        print('\nSystem Status :');
        print('- Lights : ${lighstOn ? "ON" : "OFF"}');
        print('- Temperature : $temp ْC ${day.isNotEmpty ? "- $day" : ""}');
        print('- Security system : ${securityArmed ? "ARMED" : "DISARMED"}');
        break;

      case '5':
        print('Exiting the system .\n Good Bye!');
        return;

      default:
        print('Invaild Choive');
    }
  }
}