TaghreedAdel_243000607_question1.txt

/**
 * Student Name: تغريد عادل
 * University ID: 243000607
 * Question: 1 - Smart Home Automation System
 */

import 'dart:io';

void main() {
  const int minTemp = 15;
  const int maxTemp = 30;
  
  bool isLightOn = false;
  int temperature = 20;
  bool isArmed = false;

  print('Welcome to the Smart Home System, Taghreed!');

  while (true) {
    print('\nPlease choose 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 your choice: ');
    String? choice = stdin.readLineSync();

    if (choice == '1') {
      isLightOn = !isLightOn;
      print('Lights are now ${isLightOn ? "ON" : "OFF"}.');
    } 
    else if (choice == '2') {
      stdout.write('Set thermostat temperature ($minTemp°C - $maxTemp°C): ');
      int? inputTemp = int.tryParse(stdin.readLineSync() ?? '');

      if (inputTemp != null && inputTemp >= minTemp && inputTemp <= maxTemp) {
        temperature = inputTemp;
        print('Thermostat set to $temperature°C.');
      } else {
        print('Invalid temperature! Please enter a value between $minTemp and $maxTemp.');
      }
    } 
    else if (choice == '3') {
      isArmed = !isArmed;
      String statusText = isArmed ? "armed" : "disarmed";
      print('Security System is now ${statusText.toUpperCase()}.');
    } 
    else if (choice == '4') {
      print('\n--- System Status for Taghreed ---');
      print('- Lights: ${isLightOn ? "ON" : "OFF"}');
      
      String tempNote = "";
      if (temperature % 3 == 0 && temperature % 5 == 0) {
        tempNote = " - Perfect Day";
      } else if (temperature % 3 == 0) {
        tempNote = " - Cool Day";
      } else if (temperature % 5 == 0) {
        tempNote = " - Warm Day";
      }
      
      print('- Thermostat: $temperature°C$tempNote');
      print('- Security System: ${isArmed ? "ARMED" : "DISARMED"}');
    } 
    else if (choice == '5') {
      print('Exiting the system. Goodbye, Taghreed!');
      break;
    } 
    else {
      print('Invalid choice, please try again.');
    }
  }
}