Merge branch 'feature-notification-management' into feature-1551-1561-1708

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/services/ServiceManagementService.cpp

@@ -7,12 +7,14 @@ Author: Trenser
 Date:19-May-2026
 */
 #include <stdexcept>
-#include "ServiceManagementService.h"
 #include "AuthenticationManagementService.h"
-#include "Service.h"
-#include "ServiceBooking.h"
 #include "ComboPackage.h"
 #include "Factory.h"
+#include "Service.h"
+#include "ServiceBooking.h"
+#include "ServiceManagementService.h"
+#include "Timestamp.h"
+#include "User.h"
 
 /*
 Function: purchaseService
@@ -96,3 +98,83 @@ void ServiceManagementService::purchaseComboPackage(const std::string& comboPack
 		"Combo Package Service Booking succeeded",
 		"Your service booking for the combo package has been successfully placed with ID " + serviceBooking->getId());
 }
+
+util::Map<std::string, User*> ServiceManagementService::m_observers{};
+
+/*
+Function: attach
+Description: Attaches a user as an observer to the ServiceManagementService for receiving notifications.
+Parameters:
+	- user: Pointer to the User object to be attached.
+Returns:
+	- void
+*/
+void ServiceManagementService::attach(User* user)
+{
+	if (user)
+	{
+		const std::string& userID = user->getId();
+		if (m_observers.find(userID) == -1)
+		{
+			m_observers[userID] = user;
+		}
+	}
+}
+
+/*
+Function: detach
+Description: Detaches a user from the observer list of the ServiceManagementService.
+Parameters:
+	- user: Pointer to the User object to be detached.
+Returns:
+	- void
+*/
+void ServiceManagementService::detach(User* user)
+{
+	if (user)
+	{
+		const std::string& userID = user->getId();
+		if (m_observers.find(userID) != -1)
+		{
+			m_observers.remove(userID);
+		}
+	}
+}
+
+/*
+Function: sendNotification
+Description: Sends a notification to a user if they are registered as an observer.
+Parameters:
+	- user: Pointer to the User object to receive the notification.
+	- title: Title of the notification.
+	- message: Message content of the notification.
+Returns:
+	- void
+Throws:
+	- std::runtime_error if notification creation fails.
+*/
+void ServiceManagementService::sendNotification(User* user, const std::string& title, const std::string& message)
+{
+	if (user)
+	{
+		if (m_observers.find(user->getId()) != -1)
+		{
+			Notification* notification =
+				Factory::getObject<Notification>(
+					user->getId(),
+					user,
+					"ServiceManagementService: " + title,
+					message,
+					util::Timestamp()
+				);
+			if (notification)
+			{
+				user->addNotification(notification);
+			}
+			else
+			{
+				throw std::runtime_error("Failed to create notification");
+			}
+		}
+	}
+}