add event handler for register and notifie cparticipant changes

PSManagement.Application/Projects/EventsHandlers/ChangeRegisterationOnParticipationChangedEventHandler.cs

+using PSManagement.Domain.Projects.DomainEvents;
+using PSManagement.Domain.Projects.Entities;
+using PSManagement.SharedKernel.DomainEvents;
+using PSManagement.SharedKernel.Interfaces;
+using PSManagement.SharedKernel.Repositories;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace PSManagement.Application.Projects.EventsHandlers
+{
+    public class ChangeRegisterationOnParticipationChangedEventHandler : IDomainEventHandler<ParticipationChangedEvent>
+    {
+        private readonly IRepository<ParticipationChange> _repository;
+        private readonly IUnitOfWork _unitOfWork;
+        public ChangeRegisterationOnParticipationChangedEventHandler(IRepository<ParticipationChange> repository, IUnitOfWork unitOfWork)
+        {
+            _repository = repository;
+            _unitOfWork = unitOfWork;
+        }
+
+        public async Task Handle(ParticipationChangedEvent notification, CancellationToken cancellationToken)
+        {
+
+            await _repository
+                .AddAsync(
+                new ParticipationChange {
+                PartialTimeAfter= notification.PartialTimeRatioAfter ,
+                PartialTimeBefore= notification.PartialTimeRatioBefore ,
+                EmployeeId=notification.ParticipantId,
+                ProjectId=notification.ProjectId,
+                ChangeDate=notification.DateTime,
+                RoleAfter=notification.RoleAfter,
+                RoleBefore=notification.RoleBefore
+
+                });
+
+
+            await _unitOfWork.SaveChangesAsync();
+
+
+        }
+    }
+
+}

PSManagement.Application/Projects/EventsHandlers/NotifieParticipantOnParticipationChangedEventHandler.cs

+using PSManagement.Application.Contracts.Email;
+using PSManagement.Domain.Employees.Entities;
+using PSManagement.Domain.Employees.Repositories;
+using PSManagement.Domain.Projects.DomainEvents;
+using PSManagement.SharedKernel.DomainEvents;
+using PSManagement.SharedKernel.Specification;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace PSManagement.Application.Projects.EventsHandlers
+{
+    public class NotifieParticipantOnParticipationChangedEventHandler : IDomainEventHandler<ParticipationChangedEvent>
+    {
+        private readonly IEmailService _emailService;
+        private readonly IEmployeesRepository _employeeRepository;
+        private readonly BaseSpecification<Employee> _specification;
+        
+        public NotifieParticipantOnParticipationChangedEventHandler(IEmailService emailService, IEmployeesRepository employeeRepository)
+        {
+            _emailService = emailService;
+            _employeeRepository = employeeRepository;
+        }
+
+        public async Task Handle(ParticipationChangedEvent notification, CancellationToken cancellationToken)
+        {
+            _specification.AddInclude(e => e.User);
+
+            Employee employee = await _employeeRepository.GetByIdAsync(notification.ParticipantId,_specification);
+            
+            await _emailService.SendAsync(
+                employee.User.Email,
+                "Participation Change",
+                "Mr,"+employee.PersonalInfo.FirstName +"your particiaption changed to "+notification.RoleAfter + notification.PartialTimeRatioAfter
+                
+                );
+
+            
+        }
+    }
+
+}

PSManagement.Domain/Projects/DomainEvents/ParticipationChanged.cs → PSManagement.Domain/Projects/DomainEvents/ParticipationChangedEvent.cs

@@ -3,7 +3,7 @@ using System;
 
 namespace PSManagement.Domain.Projects.DomainEvents
 {
-    public record ParticipationChanged(
+    public record ParticipationChangedEvent(
         int ParticipantId,
         int PartialTimeRatioBefore,
         int PartialTimeRatioAfter,

PSManagement.Domain/Projects/Entities/Project.cs

@@ -221,7 +221,7 @@ namespace PSManagement.Domain.Projects.Entities
         public void ChangeParticipant(int participantId, int partialTimeRation, string role)
         {
             var participate = EmployeeParticipates.Where(e => e.EmployeeId == participantId).FirstOrDefault();
-            AddDomainEvent(new ParticipationChanged(
+            AddDomainEvent(new ParticipationChangedEvent(
                 participantId,
                 participate.PartialTimeRatio,partialTimeRation,
                 role,participate.Role, Id, DateTime.Now));