chnages has been made and net salary is being displayed

lib/domain/repositories/attendance_repository.dart

@@ -4,6 +4,7 @@ import '../models/attendance_response_model.dart';
 import '../models/attendance_model.dart';
 import '../models/overtime_model.dart';
 import '../models/extra_payment_model.dart';
+import '../models/salary_model.dart';
 
 //in the following polymorphism  is being used , a quich recap it is where th esame method but opperate in a different way
 
@@ -19,4 +20,9 @@ abstract class AttendanceRepository {
   Future<List<OvertimeModel>> getExtraHours({required String employeeId});
   Future<List<ExtraPaymentModel>> getRewards({required String employeeId});
   Future<List<ExtraPaymentModel>> getPunishments({required String employeeId});
+  Future<SalaryModel> calculateSalary({
+    required String employeeId,
+    required int month,
+    required int year,
+  });
 }