Implement review fixes

Changes:

 - Strengthened UserManagementService::updateUserDetails by checking duplicates only when email/phone are changed, preventing false errors
 - Updated AdminMenu::viewStockLevels header text from "View Stock Level" to "View Stock Levels" for consistency
 - Cleaned up CustomerMenu::updateDetails by removing unused user list retrieval and improving header/message formatting

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/services/InventoryManagementService.cpp

@@ -80,7 +80,7 @@ void InventoryManagementService::sendLowStockAlerts()
 	{
 		throw std::runtime_error("The system has no admins present!");
 	}
-	for (int index = 0; index <= inventoryItemsSize; index++)
+	for (int index = 0; index < inventoryItemsSize; index++)
 	{
 		InventoryItem* inventoryItem = inventoryItems.getValueAt(index);
 		if (inventoryItem && inventoryItem->getQuantity() < config::threshold::INVENTORY_LOW_STOCK_THRESHOLD)
@@ -323,7 +323,7 @@ void InventoryManagementService::sendNotification(User* user, const std::string&
 				Factory::getObject<Notification>(
 					user->getId(),
 					user,
-					"InventoryManagementService: " + title,
+					title,
 					message,
 					util::Timestamp()
 				);

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/services/PaymentManagementService.cpp

@@ -86,7 +86,7 @@ void PaymentManagementService::sendNotification(User* user, const std::string& t
 				Factory::getObject<Notification>(
 					user->getId(),
 					user,
-					"PaymentManagementService: " + title,
+					title,
 					message,
 					util::Timestamp()
 				);

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

@@ -61,7 +61,7 @@ void ServiceManagementService::purchaseService(const util::Vector<std::string>&
 		Service* service = servicesMap.getValueAt(serviceIndex);
 		selectedServices[service->getId()] = service;
 	}
-	ServiceBooking* serviceBooking = Factory::getObject<ServiceBooking>(util::ServiceJobStatus::STARTED, selectedServices, authenticatedUser->getId(), authenticatedUser, vehicleNumber, vehicleBrand, vehicleModel, 0);
+	ServiceBooking* serviceBooking = Factory::getObject<ServiceBooking>(util::ServiceJobStatus::PENDING, selectedServices, authenticatedUser->getId(), authenticatedUser, vehicleNumber, vehicleBrand, vehicleModel, 0);
 	if (serviceBooking == nullptr)
 	{
 		throw std::runtime_error("Failed to create service booking");
@@ -175,7 +175,7 @@ void ServiceManagementService::sendNotification(User* user, const std::string& t
 				Factory::getObject<Notification>(
 					user->getId(),
 					user,
-					"ServiceManagementService: " + title,
+					title,
 					message,
 					util::Timestamp()
 				);

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/services/UserManagementService.cpp

@@ -19,7 +19,7 @@ Date:19-May-2026
 #include "User.h"
 #include "UserManagementService.h"
 #include "Vector.h"
-
+#include "Validator.h"
 
 /*
 Function: ensureAdminExists
@@ -74,16 +74,18 @@ void UserManagementService::createUser(const std::string& username, const std::s
 	PaymentManagementService paymentManagementService;
 	ServiceManagementService serviceManagementService;
 	auto& usersMap = m_dataStore.getUsers();
-	int index = usersMap.findIf(
-		[&](const std::string&, User* user)
-		{
-			return user->getUserName() == username;
-		}
-	);
-	if (index != -1)
+	if (util::isUsernameDuplicate(username, usersMap))
 	{
 		throw std::runtime_error("Username already exists");
 	}
+	if (util::isEmailDuplicate(email, usersMap))
+	{
+		throw std::runtime_error("Email already exists");
+	}
+	if (util::isPhoneDuplicate(phone, usersMap))
+	{
+		throw std::runtime_error("Phone already exists");
+	}
 	User* newUser = Factory::getObject<User>(username, password, name, phone, email, type);
 	usersMap.insert(newUser->getId(), newUser);
 	paymentManagementService.attach(newUser);
@@ -109,9 +111,23 @@ void UserManagementService::updateUserDetails(const std::string& userID, const s
 	int index = usersMap.find(userID);
 	if (index == -1)
 	{
-		throw std::runtime_error("User does not exist!");
+		throw std::runtime_error("User does not exist!\n");
 	}
 	User* user = usersMap.getValueAt(index);
+	if (email != user->getEmail())
+	{
+		if (util::isEmailDuplicate(email, usersMap))
+		{
+			throw std::runtime_error("Email already exists!\n");
+		}
+	}
+	if (phone != user->getPhone())
+	{
+		if (util::isPhoneDuplicate(phone, usersMap))
+		{
+			throw std::runtime_error("Phone number already exists!\n");
+		}
+	}
 	user->setEmail(email);
 	user->setPhone(phone);
 }

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/utilities/InputHelper.h

@@ -62,6 +62,7 @@ namespace util
      */
     inline void pressEnter()
     {
+        std::cout << std::endl;
         system("pause");
     }
 }

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/utilities/Validator.cpp

@@ -107,3 +107,69 @@ bool util::isPasswordValid(const std::string& password)
 
     return hasUpper && hasLower && hasDigit && hasSpecial;
 }
+
+/*
+ * Function: isUsernameDuplicate
+ * Description: Checks if the given username already exists among active users.
+ * Parameters:
+ *     username - string containing the username to validate
+ *     usersMap - map of user objects keyed by identifier
+ * Returns:
+ *     bool - true if the username is already in use by an active user, false otherwise
+ * Notes:
+ *     - Only considers users with state util::State::ACTIVE
+ */
+bool util::isUsernameDuplicate(const std::string& username, const util::Map<std::string, User*>& usersMap)
+{
+    int index = usersMap.findIf(
+        [&](const std::string&, User* user)
+        {
+            return (user->getUserName() == username && user->getState() == util::State::ACTIVE);
+        }
+    );
+    return index != -1;
+}
+
+/*
+ * Function: isPhoneDuplicate
+ * Description: Checks if the given phone number already exists among active users.
+ * Parameters:
+ *     phone - string containing the phone number to validate
+ *     usersMap - map of user objects keyed by identifier
+ * Returns:
+ *     bool - true if the phone number is already in use by an active user, false otherwise
+ * Notes:
+ *     - Only considers users with state util::State::ACTIVE
+ */
+bool util::isPhoneDuplicate(const std::string& phone, const util::Map<std::string, User*>& usersMap)
+{
+    int index = usersMap.findIf(
+        [&](const std::string&, User* user)
+        {
+            return (user->getPhone() == phone && user->getState() == util::State::ACTIVE);
+        }
+    );
+    return index != -1;
+}
+
+/*
+ * Function: isEmailDuplicate
+ * Description: Checks if the given email address already exists among active users.
+ * Parameters:
+ *     email - string containing the email address to validate
+ *     usersMap - map of user objects keyed by identifier
+ * Returns:
+ *     bool - true if the email address is already in use by an active user, false otherwise
+ * Notes:
+ *     - Only considers users with state util::State::ACTIVE
+ */
+bool util::isEmailDuplicate(const std::string& email, const util::Map<std::string, User*>& usersMap)
+{
+    int index = usersMap.findIf(
+        [&](const std::string&, User* user)
+        {
+            return (user->getEmail() == email && user->getState() == util::State::ACTIVE);
+        }
+    );
+    return index != -1;
+}

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/utilities/Validator.h

@@ -9,10 +9,15 @@
 #include<string>
 #include<algorithm>
 #include<cctype>
+#include "Map.h"
+#include "User.h"
 
 namespace util
 {
 	bool isPhoneNumberValid(const std::string&);
 	bool isEmailValid(const std::string&);
 	bool isPasswordValid(const std::string&);
+	bool isUsernameDuplicate(const std::string&, const util::Map<std::string, User*>&);
+	bool isPhoneDuplicate(const std::string&, const util::Map<std::string, User*>&);
+	bool isEmailDuplicate(const std::string&, const util::Map<std::string, User*>&);
 }

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/views/AdminMenu.cpp

@@ -158,10 +158,33 @@ void AdminMenu::viewStockLevels()
 {
     util::clear();
 	auto inventoryItems = m_controller.getInventoryItems();
+	bool hasActiveItems = false;
+	std::cout << "View Stock Levels" << std::endl;
+	if (inventoryItems.isEmpty())
+	{
+		std::cout << "No items found in Inventory.\n";
+		util::pressEnter();
+		return;
+	}
+	for (int index = 0; index < inventoryItems.getSize(); index++)
+	{
+		const InventoryItem* item = inventoryItems.getValueAt(index);
+		if (item->getState() == util::State::ACTIVE)
+		{
+			hasActiveItems = true;
+			break;
+		}
+	}
+	if (!hasActiveItems)
+	{
+		std::cout << "No active Inventory Item found.\n";
+		util::pressEnter();
+		return;
+	}
 	std::cout << std::left << std::setw(15) << "Item ID"
 		<< std::setw(25) << "Part Name"
-		<< std::setw(10) << "Quantity"
-		<< std::setw(10) << "Price"
+		<< std::setw(15) << "Quantity"
+		<< std::setw(15) << "Price"
 		<< std::endl;
 	for (int iterator = 0; iterator < inventoryItems.getSize(); ++iterator)
 	{
@@ -172,12 +195,14 @@ void AdminMenu::viewStockLevels()
 			{
 				std::cout << std::left << std::setw(15) << item->getId()
 					<< std::setw(25) << item->getPartName()
-					<< std::setw(10) << item->getQuantity()
-					<< std::setw(10) << item->getPrice()
+					<< std::setw(15) << item->getQuantity()
+					<< std::setw(15) << item->getPrice()
 					<< std::endl;
 			}
 		}
 	}
+	std::cout << "\n";
+	util::pressEnter();
 }
 
 /*
@@ -273,8 +298,10 @@ void AdminMenu::checkStockAvailability()
 {
 	util::clear();
 	std::string itemId;
-	std::cout << "Enter the Item Id : ";
+	std::cout << "Check Stock Availability \n";
+	std::cout << "Enter the Item ID : ";
 	util::read(itemId);
+	util::clear();
 	const InventoryItem* selectedItem = m_controller.getInventoryItem(itemId);
 	if (selectedItem != nullptr)
 	{
@@ -287,6 +314,10 @@ void AdminMenu::checkStockAvailability()
 			std::cout << "Quantity     : " << selectedItem->getQuantity() << "\n";
 		}
 	}
+	else
+	{
+		std::cout << "Item not Found" << std::endl;
+	}
 	util::pressEnter();
 }
 
@@ -443,6 +474,7 @@ void AdminMenu::removeUser()
 	auto listOfUsers = m_controller.getUsers();
 	auto listOfActiveUsers = filterActiveUsers(listOfUsers);
 	int activeUserCount = listOfActiveUsers.getSize();
+	std::cout << "Remove User \n";
 	if (activeUserCount < 1)
 	{
 		std::cout << "No Active users." << std::endl;

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/views/CustomerMenu.cpp

@@ -144,11 +144,12 @@ void CustomerMenu::updateDetails()
 {
 	std::string email, phone;
 	util::clear();
+    std::cout << "Update Details\n";
 	std::cout << "Enter new email: ";
 	util::read(email);
 	if (!util::isEmailValid(email))
 	{
-		std::cout << "Error: Email is invalid!";
+		std::cout << "Error: Email is invalid!\n";
 		util::pressEnter();
 		return;
 	}
@@ -156,12 +157,12 @@ void CustomerMenu::updateDetails()
 	util::read(phone);
 	if (!util::isPhoneNumberValid(phone))
 	{
-		std::cout << "Error: Phone number is invalid!";
+		std::cout << "Error: Phone number is invalid!\n";
 		util::pressEnter();
 		return;
 	}
 	m_controller.updateUserDetails(email, phone);
-	std::cout << "Profile details updated successfully";
+	std::cout << "Profile details updated successfully\n";
 	util::pressEnter();
 }
 
@@ -175,9 +176,16 @@ Return type: void
 void CustomerMenu::selectService()
 {
     std::string vehicleNumber, vehicleBrand, vehicleModel;
-	auto services = m_controller.getServices();
-    util::Vector<std::string> selectedServices;
     util::clear();
+    std::cout << "Select a Service\n";
+	auto services = m_controller.getServices();
+    if (services.isEmpty())
+    {
+        std::cout << "No services available!";
+        util::pressEnter();
+        return;
+    }
+    util::Vector<std::string> selectedServices;
     const Service* selectedService = selectServiceFromServices(services);
     if (selectedService == nullptr)
     {
@@ -187,6 +195,7 @@ void CustomerMenu::selectService()
     }
     selectedServices.push_back(selectedService->getId());
     util::clear();
+    std::cout << "Enter Vehicle Details\n";
     std::cout << "Enter vehicle number: ";
     util::read(vehicleNumber);
     std::cout << "Enter vehicle brand: ";
@@ -208,8 +217,15 @@ Return type: void
 void CustomerMenu::selectComboPackage()
 {
     std::string vehicleNumber, vehicleBrand, vehicleModel;
-    auto comboPackages = m_controller.getComboPackages();
     util::clear();
+    std::cout << "Select a Combo Package\n";
+    auto comboPackages = m_controller.getComboPackages();
+    if (comboPackages.isEmpty())
+    {
+        std::cout << "No combo packages available!";
+        util::pressEnter();
+        return;
+    }
     const ComboPackage* selectedComboPackage = selectComboPackageFromPackages(comboPackages);
     if (selectedComboPackage == nullptr)
     {
@@ -245,16 +261,17 @@ void CustomerMenu::viewServiceHistory()
 	const User* currentUser = m_controller.getAuthenticatedUser();
 	std::string currentUserID = currentUser->getId();
 	util::Map<std::string, const ServiceBooking*> serviceBookingsByCurrentUser = m_controller.getServiceBookingsByUser(currentUserID);
+    std::cout << "View Service History" << std::endl;
     if (serviceBookingsByCurrentUser.getSize() != 0)
     {
         std::cout << std::left
-            << std::setw(12) << "Booking ID"
+            << std::setw(15) << "Booking ID"
             << std::setw(20) << "Technician"
-            << std::setw(15) << "Vehicle Brand"
-            << std::setw(15) << "Vehicle Number"
-            << std::setw(15) << "Vehicle Model"
-            << std::setw(10) << "Discount %"
-            << std::setw(12) << "Status"
+            << std::setw(20) << "Vehicle Brand"
+            << std::setw(20) << "Vehicle Number"
+            << std::setw(20) << "Vehicle Model"
+            << std::setw(20) << "Discount %"
+            << std::setw(20) << "Status"
             << std::endl;
         for (int iterator = 0; iterator < serviceBookingsByCurrentUser.getSize(); iterator++)
         {
@@ -263,13 +280,13 @@ void CustomerMenu::viewServiceHistory()
                 ? "Not Assigned"
                 : currentBooking->getAssignedTechnician()->getName();
             std::cout << std::left
-                << std::setw(12) << currentBooking->getId()
+                << std::setw(15) << currentBooking->getId()
                 << std::setw(20) << technicianName
-                << std::setw(15) << currentBooking->getVehicleBrand()
-                << std::setw(15) << currentBooking->getVehicleNumber()
-                << std::setw(15) << currentBooking->getVehicleModel()
-                << std::setw(10) << currentBooking->getDiscountPercentage()
-                << std::setw(12) << util::getServiceJobStatusString(currentBooking->getStatus())
+                << std::setw(20) << currentBooking->getVehicleBrand()
+                << std::setw(20) << currentBooking->getVehicleNumber()
+                << std::setw(20) << currentBooking->getVehicleModel()
+                << std::setw(20) << currentBooking->getDiscountPercentage()
+                << std::setw(20) << util::getServiceJobStatusString(currentBooking->getStatus())
                 << std::endl;
             hasServiceHistory = true;
         }
@@ -293,11 +310,35 @@ Returns:
 void CustomerMenu::completePayments()
 {
 	util::clear();
+    std::cout << "Complete Payments\n";
 	util::Map<std::string, const Invoice*> currentInvoices = m_controller.getInvoicesByUser();
+    if (currentInvoices.isEmpty())
+    {
+        std::cout << "No pending invoices available for payment.\n";
+        util::pressEnter();
+        return;
+    }
+    bool hasPending = false;
+    for (int index = 0; index < currentInvoices.getSize(); ++index)
+    {
+        const Invoice* invoice = currentInvoices.getValueAt(index);
+        if (invoice && invoice->getStatus() == util::PaymentStatus::PENDING)
+        {
+            hasPending = true;
+            break;
+        }
+    }
+    if (!hasPending)
+    {
+        std::cout << "No pending invoices available for payment.\n";
+        util::pressEnter();
+        return;
+    }
 	std::string selectedID = selectInvoiceFromUserForPayment(currentInvoices);
     if (selectedID == "")
     {
         std::cout << "Payment failed.\n";
+        util::pressEnter();
         return;
     }
     util::PaymentMode paymentMode = selectPaymentMode();

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/views/MenuHelper.h

@@ -77,7 +77,7 @@ inline std::string selectServicesToRemove(util::Map<std::string, const Service*>
     }
     else
 {
-        std::cout << "Invalid choice." << std::endl;
+        std::cout << "Invalid index." << std::endl;
         return "";
     }
 }
@@ -91,7 +91,7 @@ Parameters:
 Returns:
     - void
 */
-static void selectInventoryItems(util::Map<std::string, const InventoryItem*>& currentInventoryItems, util::Vector<std::string>& selectedInventoryItems)
+inline void selectInventoryItems(util::Map<std::string, const InventoryItem*>& currentInventoryItems, util::Vector<std::string>& selectedInventoryItems)
 {
 	bool doRun = true, hasInventoryItems = false;
 	util::Map<int, const InventoryItem*> currentInventoryMap;
@@ -166,7 +166,7 @@ Parameters:
 Returns:
 	- bool: True if pending services exist, False otherwise
 */
-static bool listServiceBookings(util::Map<std::string, const ServiceBooking*>& currentBookings, int& bookingsSize, util::Map<int, const ServiceBooking*>& serviceBookingsMap)
+inline bool listServiceBookings(util::Map<std::string, const ServiceBooking*>& currentBookings, int& bookingsSize, util::Map<int, const ServiceBooking*>& serviceBookingsMap)
 {
     int currentIndex = 1;
 	bool hasPendingService = false;
@@ -220,7 +220,7 @@ Parameters:
 Returns:
 	- const ServiceBooking*: Pointer to the selected booking, or nullptr if invalid
 */
-static const ServiceBooking* selectPendingServiceBookings(util::Map<int, const ServiceBooking*>& serviceBookingsMap)
+inline const ServiceBooking* selectPendingServiceBookings(util::Map<int, const ServiceBooking*>& serviceBookingsMap)
 {
 	int userInputIndex;
 	std::cout << "Enter a valid service index: ";
@@ -246,7 +246,7 @@ Parameters:
 Returns:
 	- void
 */
-static void listAvailableTechnicians(util::Map<std::string, const User*> currentAvailableTechnicians, int numberOfTechnicians, util::Map<int, const User*>& currentAvailableTechniciansMap)
+inline void listAvailableTechnicians(util::Map<std::string, const User*> currentAvailableTechnicians, int numberOfTechnicians, util::Map<int, const User*>& currentAvailableTechniciansMap)
 {
 	bool hasTechnicians = false;
     int currentIndex = 1;
@@ -284,7 +284,7 @@ Parameters:
 Returns:
 	- const User*: Pointer to the selected technician, or nullptr if invalid
 */
-static const User* selectTechnician(util::Map<int, const User*>& currentAvailableTechniciansMap)
+inline const User* selectTechnician(util::Map<int, const User*>& currentAvailableTechniciansMap)
     {
 	int userInputIndex;
 	util::read(userInputIndex);
@@ -307,8 +307,9 @@ Parameters:
 Returns:
 	- std::string: ID of the selected invoice, or empty string if none selected
 */
-static std::string selectInvoiceFromUserForPayment(const util::Map<std::string, const Invoice*>& currentInvoices)
+inline std::string selectInvoiceFromUserForPayment(const util::Map<std::string, const Invoice*>& currentInvoices)
 {
+    util::clear();
 	int currentIndex = 1, choice;
 	util::Map<int, const Invoice*> pendingInvoicesForPayment;
 	std::cout << std::left
@@ -316,7 +317,7 @@ static std::string selectInvoiceFromUserForPayment(const util::Map<std::string,
 		<< std::setw(12) << "BookingID"
 		<< std::setw(15) << "VehicleBrand"
 		<< std::setw(15) << "VehicleNumber"
-		<< std::setw(12) << "TechID"
+		<< std::setw(12) << "Technician ID"
 		<< std::setw(20) << "Technician Name"
 		<< std::setw(10) << "Discount(%)"
 		<< std::setw(12) << "TotalAmount"
@@ -359,7 +360,7 @@ static std::string selectInvoiceFromUserForPayment(const util::Map<std::string,
         }
 	else
 	{
-		std::cout << "Invalid choice.\n";
+		std::cout << "Invalid index.\n";
 		return "";
     }
 }
@@ -372,7 +373,7 @@ Parameters:
 Returns:
 	- util::PaymentMode: Selected payment mode
 */
-static util::PaymentMode selectPaymentMode()
+inline util::PaymentMode selectPaymentMode()
 {
 	int choice;
 	std::cout << "Enter the payment Mode\n1.OFFLINE\n2.ONLINE\nChoice: ";
@@ -389,7 +390,7 @@ static util::PaymentMode selectPaymentMode()
         }
 	else
 	{
-		std::cout << "Invalid choice, Offline mode selected.\n";
+		std::cout << "Invalid choice. Offline mode selected.\n";
 		return util::PaymentMode::OFFLINE;
     }
 }
@@ -405,7 +406,7 @@ Returns:
 Throws:
 	- std::runtime_error if a null invoice is encountered
 */
-static void displayInvoices(util::Map<std::string, const Invoice*> currentUserInvoices)
+inline void displayInvoices(util::Map<std::string, const Invoice*> currentUserInvoices)
 {
 	if (currentUserInvoices.getSize() == 0)
     {
@@ -471,7 +472,7 @@ Parameters:
 Returns:
 	- std::string: ID of the selected job card, or empty string if none selected
 */
-static std::string selectJobCardToComplete(util::Map<std::string, const JobCard*>& assignedJobCards, util::Map<int, const JobCard*>& incompleteJobCards)
+inline std::string selectJobCardToComplete(util::Map<std::string, const JobCard*>& assignedJobCards, util::Map<int, const JobCard*>& incompleteJobCards)
     {
 	int currentIndex = 1;
 	int choice;
@@ -513,7 +514,7 @@ static std::string selectJobCardToComplete(util::Map<std::string, const JobCard*
     }
     else
     {
-		std::cout << "Invalid choice.\n";
+		std::cout << "Invalid index.\n";
         return "";
     }
 }
@@ -528,11 +529,6 @@ Return type: const Notification* - pointer to the selected notification
 */
 inline const Notification* selectNotification(const util::Vector<const Notification*>& notifications)
 {
-    if (notifications.getSize() == 0)
-    {
-        std::cout << "No notifications available." << std::endl;
-        return nullptr;
-    }
     util::Map<int, const Notification*> indexedNotifications;
     std::cout << std::left
         << std::setw(6) << "Index"
@@ -549,7 +545,7 @@ inline const Notification* selectNotification(const util::Vector<const Notificat
             std::cout << std::left
                 << std::setw(6) << currentIndex
                 << std::setw(15) << currentNotification->getId()
-                << std::setw(30) << currentNotification->getTitle()
+                << std::setw(35) << currentNotification->getTitle()
                 << std::setw(25) << currentNotification->getCreatedAt().toString()
                 << std::endl;
             indexedNotifications.insert(currentIndex, currentNotification);
@@ -561,7 +557,7 @@ inline const Notification* selectNotification(const util::Vector<const Notificat
     util::read(selectedIndex);
     if (!indexedNotifications.containsKey(selectedIndex))
     {
-        std::cout << "Invalid selection." << std::endl;
+        std::cout << "Invalid index." << std::endl;
         return nullptr;
     }
     return indexedNotifications[selectedIndex];
@@ -602,6 +598,13 @@ inline void viewAndDeleteNotification(Controller& controller)
 {
     util::clear();
     auto notifications = controller.getNotifications();
+    std::cout << "View and Delete Notification" << std::endl;
+    if (notifications.getSize() == 0)
+    {
+        std::cout << "No notifications available." << std::endl;
+        util::pressEnter();
+        return;
+    }
     const Notification* selectedNotification = selectNotification(notifications);
     if (!selectedNotification)
     {
@@ -623,10 +626,16 @@ Return type: void
 inline void changePasswordHelper(Controller& controller)
 {
     util::clear();
-    std::string newPassword;
+    const User* authenticatedUser = controller.getAuthenticatedUser();
+    if (!authenticatedUser)
+    {
+        throw std::runtime_error("No user is currently logged in!");
+    }
+    std::string newPassword, confirmedPassword;
     while (true)
     {
         util::clear();
+        std::cout << "Change Password\n";
         std::cout << "Enter new password: ";
         util::read(newPassword);
         if (!util::isPasswordValid(newPassword))
@@ -635,6 +644,20 @@ inline void changePasswordHelper(Controller& controller)
             util::pressEnter();
             continue;
         }
+        if (newPassword == authenticatedUser->getPassword())
+        {
+            std::cout << "New password cannot be same as old password. Try again\n";
+            util::pressEnter();
+            continue;
+        }
+        std::cout << "Confirm new password: ";
+        util::read(confirmedPassword);
+        if (confirmedPassword != newPassword)
+        {
+            std::cout << "Passwords are different. Try again\n";
+            util::pressEnter();
+            continue;
+        }
         controller.changePassword(newPassword);
         std::cout << "Password changed successfully\n";
         util::pressEnter();
@@ -655,7 +678,7 @@ inline util::Map<std::string, const User*> filterActiveUsers(const util::Map<std
     for (int index = 0; index < inventorySize; index++)
     {
         const User* user = listOfUsers.getValueAt(index);
-        if (user != nullptr && user->getState() != util::State::INACTIVE)
+        if (user != nullptr && user->getState() != util::State::INACTIVE && user->getUserType() != util::UserType::ADMIN)
         {
             activeUsers.insert(user->getId(), user);
         }
@@ -764,8 +787,8 @@ inline const ComboPackage* selectComboPackageFromPackages(const util::Map<std::s
     int userInputIndex;
     std::cout << std::left
         << std::setw(10) << "Index"
-        << std::setw(15) << "Combo Package ID"
-        << std::setw(15) << "Combo Package Name"
+        << std::setw(15) << "Combo ID"
+        << std::setw(15) << "Combo Name"
         << std::setw(15) << "Estimate Cost"
         << std::endl;
     for (int index = 0; index < comboPackages.getSize(); index++)

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/views/UserInterface.cpp

@@ -85,6 +85,7 @@ void UserInterface::login()
 {
 	std::string username, password;
 	util::clear();
+	std::cout << "Login\n";
 	std::cout << "Enter username: ";
 	util::read(username);
 	std::cout << "Enter password: ";
@@ -92,7 +93,7 @@ void UserInterface::login()
 	if (m_controller.login(username, password))
 	{
 		const User* authenticatedUser = m_controller.getAuthenticatedUser();
-		if (authenticatedUser != nullptr)
+		if (authenticatedUser && authenticatedUser->getState() != util::State::INACTIVE)
 		{
 			switch (authenticatedUser->getUserType())
 			{
@@ -110,10 +111,16 @@ void UserInterface::login()
 				break;
 			}
 		}
+		else if (authenticatedUser && authenticatedUser->getState() == util::State::INACTIVE)
+		{
+			std::cout << "\nError: Your account has been disabled. Please contact your Administrator.";
+			util::pressEnter();
+		}
 	}
 	else
 	{
 		std::cout << "\nError: Invalid Username or Password";
+		util::pressEnter();
 	}
 }
 
@@ -129,6 +136,7 @@ void UserInterface::registerCustomer()
 {
 	std::string username, name, email, phone, password;
 	util::clear();
+	std::cout << "Register Customer\n";
 	std::cout << "Enter username: ";
 	util::read(username);
 	std::cout << "Enter name: ";