├── README.md
└── myclock.dart


/README.md:
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1 | # clock
2 | Dart console application for a company clock-in system.
3 | This program allows employees to clock in and out, view their total working hours for the day, and view their total working hours for the week.
4 | 
5 | 
6 | This Dart application provides a menu-driven interface where employees can clock in, clock out, and view their total working hours for the day or week. Employee data is stored in a map with the employee's name as the key and an Employee object as the value. Each Employee object contains lists of clock-in and clock-out timestamps.
7 | 


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/myclock.dart:
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  1 | import 'dart:io';
  2 | 
  3 | class Employee {
  4 |   String name;
  5 |   List<DateTime> clockIns = [];
  6 |   List<DateTime> clockOuts = [];
  7 | 
  8 |   Employee(this.name);
  9 | 
 10 |   void clockIn() {
 11 |     clockIns.add(DateTime.now());
 12 |     print('Clocked in at ${clockIns.last}');
 13 |   }
 14 | 
 15 |   void clockOut() {
 16 |     clockOuts.add(DateTime.now());
 17 |     print('Clocked out at ${clockOuts.last}');
 18 |   }
 19 | 
 20 |   Duration getTodayTotalHours() {
 21 |     var today = DateTime.now();
 22 |     var todayClockIns = clockIns.where((dateTime) =>
 23 |         dateTime.year == today.year &&
 24 |         dateTime.month == today.month &&
 25 |         dateTime.day == today.day);
 26 |     var todayClockOuts = clockOuts.where((dateTime) =>
 27 |         dateTime.year == today.year &&
 28 |         dateTime.month == today.month &&
 29 |         dateTime.day == today.day);
 30 | 
 31 |     var total = Duration.zero;
 32 |     for (var i = 0; i < todayClockIns.length; i++) {
 33 |       var clockIn = todayClockIns.elementAt(i);
 34 |       var clockOut = todayClockOuts.elementAt(i);
 35 |       total += clockOut.difference(clockIn);
 36 |     }
 37 |     return total;
 38 |   }
 39 | 
 40 |   Duration getWeeklyTotalHours() {
 41 |     var today = DateTime.now();
 42 |     var startOfWeek = today.subtract(Duration(days: today.weekday - 1));
 43 |     var endOfWeek = startOfWeek.add(Duration(days: 6));
 44 | 
 45 |     var weeklyClockIns = clockIns.where((dateTime) =>
 46 |         dateTime.isAfter(startOfWeek.subtract(Duration(seconds: 1))) &&
 47 |         dateTime.isBefore(endOfWeek.add(Duration(days: 1))));
 48 |     var weeklyClockOuts = clockOuts.where((dateTime) =>
 49 |         dateTime.isAfter(startOfWeek.subtract(Duration(seconds: 1))) &&
 50 |         dateTime.isBefore(endOfWeek.add(Duration(days: 1))));
 51 | 
 52 |     var total = Duration.zero;
 53 |     for (var i = 0; i < weeklyClockIns.length; i++) {
 54 |       var clockIn = weeklyClockIns.elementAt(i);
 55 |       var clockOut = weeklyClockOuts.elementAt(i);
 56 |       total += clockOut.difference(clockIn);
 57 |     }
 58 |     return total;
 59 |   }
 60 | }
 61 | 
 62 | void main() {
 63 |   var employees = <String, Employee>{};
 64 | 
 65 |   while (true) {
 66 |     print('1. Clock In');
 67 |     print('2. Clock Out');
 68 |     print('3. View Today\'s Total Hours');
 69 |     print('4. View Weekly Total Hours');
 70 |     print('5. Exit');
 71 |     stdout.write('Select an option: ');
 72 |     var choice = int.tryParse(stdin.readLineSync() ?? '');
 73 | 
 74 |     switch (choice) {
 75 |       case 1:
 76 |         clockIn(employees);
 77 |         break;
 78 |       case 2:
 79 |         clockOut(employees);
 80 |         break;
 81 |       case 3:
 82 |         viewTodayTotalHours(employees);
 83 |         break;
 84 |       case 4:
 85 |         viewWeeklyTotalHours(employees);
 86 |         break;
 87 |       case 5:
 88 |         print('Exiting...');
 89 |         return;
 90 |       default:
 91 |         print('Invalid option. Please try again.');
 92 |     }
 93 |   }
 94 | }
 95 | 
 96 | void clockIn(Map<String, Employee> employees) {
 97 |   stdout.write('Enter employee name: ');
 98 |   var name = stdin.readLineSync() ?? '';
 99 |   var employee = employees.putIfAbsent(name, () => Employee(name));
100 |   employee.clockIn();
101 | }
102 | 
103 | void clockOut(Map<String, Employee> employees) {
104 |   stdout.write('Enter employee name: ');
105 |   var name = stdin.readLineSync() ?? '';
106 |   var employee = employees[name];
107 |   if (employee != null) {
108 |     employee.clockOut();
109 |   } else {
110 |     print('Employee not found.');
111 |   }
112 | }
113 | 
114 | void viewTodayTotalHours(Map<String, Employee> employees) {
115 |   stdout.write('Enter employee name: ');
116 |   var name = stdin.readLineSync() ?? '';
117 |   var employee = employees[name];
118 |   if (employee != null) {
119 |     var totalHours = employee.getTodayTotalHours();
120 |     print('Total working hours today: ${totalHours.inHours} hours ${totalHours.inMinutes % 60} minutes');
121 |   } else {
122 |     print('Employee not found.');
123 |   }
124 | }
125 | 
126 | void viewWeeklyTotalHours(Map<String, Employee> employees) {
127 |   stdout.write('Enter employee name: ');
128 |   var name = stdin.readLineSync() ?? '';
129 |   var employee = employees[name];
130 |   if (employee != null) {
131 |     var totalHours = employee.getWeeklyTotalHours();
132 |     print('Total working hours this week: ${totalHours.inHours} hours ${totalHours.inMinutes % 60} minutes');
133 |   } else {
134 |     print('Employee not found.');
135 |   }
136 | }
137 | 


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