Merged PR 1142: Add display menus for users, services, combo packages and jobs

Add display menus for users, services, combo packages and jobs

Changes:
- Added display options for users, services, combo packages and technician jobs
- Updated admin and technician menu options and navigation
- Added reusable helper functions for displaying data in tabular format
- Improved user and combo package listing displays
- Fixed minor validation and error message formatting issues

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/controllers/Controller.cpp

@@ -409,10 +409,8 @@ void Controller::removeUser(const std::string& userID)
     User* user = m_userManagementService.getUser(userID);
     if (!user)
     {
-        throw std::runtime_error("Error User not Found.\n");
+        throw std::runtime_error("Error: User not Found.\n");
     }
-    m_serviceManagementService.cancelCustomerServiceBookings(userID);
-    m_serviceManagementService.cancelTechnicianJobs(userID);
     m_userManagementService.removeUser(userID);
 }
 

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/files/README.md

@@ -1 +0,0 @@
-Place files here.

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/models/ServiceBooking.cpp

@@ -24,9 +24,10 @@ Parameters: None
 Returns: A new ServiceBooking object.
 */
 ServiceBooking::ServiceBooking()
-    : m_id("SRV" + std::to_string(++m_uid)),
+    : m_id("SBK" + std::to_string(++m_uid)),
     m_customer(nullptr),
     m_assignedTechnician(nullptr),
+    m_status(util::ServiceJobStatus::PENDING),
     m_discountPercentage(0.0) {}
 
 /*
@@ -56,7 +57,7 @@ ServiceBooking::ServiceBooking(
     const std::string& vehicleModel,
     double discountPercentage
 )
-    : m_id("SRV" + std::to_string(++m_uid)),
+    : m_id("SBK" + std::to_string(++m_uid)),
     m_status(status),
     m_services(services),
     m_customerId(customerId),

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

@@ -294,7 +294,7 @@ void PaymentManagementService::generateInvoice(ServiceBooking* booking)
 	{
 		throw std::runtime_error("Invoice generation failed: booking is null.");
 	}
-	double totalLabourCost = 0, totalPartsCost = 0, totalServiceCost = 0;
+	double totalLaborCost = 0, totalPartsCost = 0, totalServiceCost = 0;
 	double discountPercentage = booking->getDiscountPercentage();
 	std::string bookingID = booking->getId();
 	util::Map<std::string, Service*> servicesInTheBookedService = booking->getServices();
@@ -303,9 +303,10 @@ void PaymentManagementService::generateInvoice(ServiceBooking* booking)
 	for (int iterator = 0; iterator < currentJobCards.getSize(); iterator++)
 	{
 		JobCard* currentJobCard = currentJobCards.getValueAt(iterator);
-		if (currentJobCard->getBookingId() == bookingID && currentJobCard->getStatus() != util::ServiceJobStatus::COMPLETED)
+		util::ServiceJobStatus currentJobCardStatus = currentJobCard->getStatus();
+		if (currentJobCard->getBookingId() == bookingID && currentJobCardStatus != util::ServiceJobStatus::CANCELLED && currentJobCardStatus != util::ServiceJobStatus::COMPLETED)
 		{
-			throw std::runtime_error("Invoice generation failed: not all job cards are completed for booking '" + bookingID + "'.");
+			throw std::runtime_error("Invoice generation failed: Not all job cards are completed for booking '" + bookingID + "'.");
 		}
 	}
 	for (int iterator = 0; iterator < servicesInTheBookedService.getSize(); iterator++)
@@ -314,13 +315,13 @@ void PaymentManagementService::generateInvoice(ServiceBooking* booking)
 		if (currentService)
 		{
 			createInventoryItemsMap(completeInventoryItemMapOfBooking, currentService);
-			totalLabourCost += currentService->getLaborCost();
+			totalLaborCost += currentService->getLaborCost();
 			totalPartsCost += util::calculatePartsCost(currentService);
 		}
 	}
-	totalServiceCost = totalLabourCost + totalPartsCost;
+	totalServiceCost = totalLaborCost + totalPartsCost;
 	totalServiceCost -= (totalServiceCost * (discountPercentage / 100));
-	Invoice* invoice = Factory::getObject<Invoice>(bookingID, booking, util::Timestamp(), totalLabourCost, completeInventoryItemMapOfBooking, totalPartsCost, discountPercentage, totalServiceCost, util::Timestamp(), util::PaymentMode::NOTSET, util::PaymentStatus::PENDING);
+	Invoice* invoice = Factory::getObject<Invoice>(bookingID, booking, util::Timestamp(), totalLaborCost, completeInventoryItemMapOfBooking, totalPartsCost, discountPercentage, totalServiceCost, util::Timestamp(), util::PaymentMode::NOTSET, util::PaymentStatus::PENDING);
 	util::Map<std::string, Invoice*>& currentInvoices = m_dataStore.getInvoices();
 	currentInvoices.insert(invoice->getId(), invoice);
 }
@@ -375,7 +376,7 @@ void PaymentManagementService::completePayment(const std::string& invoiceID, uti
 			invoice->setStatus(util::PaymentStatus::COMPLETED);
 			std::string title, message;
 			title = "Payment successful";
-			message = "Payment successful for invoice ID " + invoiceID;
+			message = "Payment successful for Invoice ID " + invoiceID;
 			sendNotification(currentUser, title, message);
 		}
 	}

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

@@ -26,7 +26,6 @@ Date:19-May-2026
 #include "User.h"
 #include "UserManagementService.h"
 #include "Utility.h"
-#include "ComboPackage.h"
 
 /*
 Function: purchaseService
@@ -100,7 +99,7 @@ void ServiceManagementService::purchaseComboPackage(const std::string& comboPack
 	}
 	const ComboPackage* comboPackage = comboPackagesMap[comboPackageID];
 	util::Map<std::string, Service*> selectedServices = comboPackage->getServices();
-	ServiceBooking* serviceBooking = Factory::getObject<ServiceBooking>(util::ServiceJobStatus::STARTED, selectedServices, authenticatedUser->getId(), authenticatedUser, vehicleNumber, vehicleBrand, vehicleModel, comboPackage->getDiscountPercentage());
+	ServiceBooking* serviceBooking = Factory::getObject<ServiceBooking>(util::ServiceJobStatus::PENDING, selectedServices, authenticatedUser->getId(), authenticatedUser, vehicleNumber, vehicleBrand, vehicleModel, comboPackage->getDiscountPercentage());
 	if (serviceBooking == nullptr)
 	{
 		throw std::runtime_error("Failed to create combo package service booking");
@@ -508,6 +507,89 @@ void ServiceManagementService::saveObservers()
     util::saveObservers(config::file::SERVICEMANAGEMENTOBSERVERS, this);
 }
 
+/*
+Function: restoreInventory
+Description: Restores inventory quantities for all required items in the services associated
+             with a given booking. Each item's quantity is incremented by a fixed value.
+Parameter: ServiceBooking* booking - Pointer to the booking whose inventory items need to be restored
+Return type: void
+*/
+static void restoreInventory(ServiceBooking* booking)
+{
+    const int INCREMENT_VALUE = 1;
+    if (!booking) 
+    {
+        return;
+    }
+    const auto& services = booking->getServices();
+    for (int serviceIterator = 0; serviceIterator < services.getSize(); ++serviceIterator)
+    {
+        Service* service = services.getValueAt(serviceIterator);
+        if (!service) 
+        {
+            continue;
+        }
+        const auto& items = service->getRequiredInventoryItems();
+        for (int InventoryIterator = 0; InventoryIterator < items.getSize(); ++InventoryIterator)
+        {
+            InventoryItem* item = items.getValueAt(InventoryIterator);
+            if (item)
+            {
+                item->setQuantity(item->getQuantity() + INCREMENT_VALUE);
+            }
+        }
+    }
+}
+
+/*
+Function: processBookingCancellation
+Description: Cancels jobs and updates the status of a given booking. Sends notifications to the
+             specified user, resets technician assignment if needed, and restores inventory items.
+Parameter: ServiceBooking* booking - Pointer to the booking being cancelled
+           util::ServiceJobStatus newServiceBookingStatus - New status to assign to the booking
+           const std::string& notificationTitle - Title of the booking cancellation notification
+           const std::string& notificationMessage - Message body of the booking cancellation notification
+           User* notifyUser - User to notify about the cancellation
+           util::ServiceJobStatus jobCardStatus - New status to assign to associated job cards
+           const std::string& jobNotificationTitle - Title of the job cancellation notification
+           const std::string& jobNotificationMessage - Message body of the job cancellation notification
+           util::Map<std::string, JobCard*>& jobs - Collection of job cards to update
+           ServiceManagementService& currentService - Reference to the service for sending notifications
+Return type: void
+*/
+static void processBookingCancellation(ServiceBooking* booking,
+    util::ServiceJobStatus newServiceBookingStatus,
+    const std::string& notificationTitle,
+    const std::string& notificationMessage,
+    User* notifyUser,
+    util::ServiceJobStatus jobCardStatus,
+    const std::string& jobNotificationTitle,
+    const std::string& jobNotificationMessage,
+    util::Map<std::string, JobCard*>& jobs, ServiceManagementService& currentService)
+{
+    if (!booking || !notifyUser)
+    {
+        return;
+    }
+    for (int jobIterator = 0; jobIterator < jobs.getSize(); ++jobIterator)
+    {
+        JobCard* jobCard = jobs.getValueAt(jobIterator);
+        if (jobCard && jobCard->getBookingId() == booking->getId())
+        {
+            jobCard->setStatus(jobCardStatus);
+            currentService.sendNotification(notifyUser, jobNotificationTitle, jobNotificationMessage);
+        }
+    }
+    booking->setStatus(newServiceBookingStatus);
+    currentService.sendNotification(notifyUser, notificationTitle, notificationMessage);
+    if (newServiceBookingStatus == util::ServiceJobStatus::PENDING)
+    {
+        booking->setAssignedTechnician(nullptr);
+        booking->setAssignedTechnicianId("");
+    }
+    restoreInventory(booking);
+}
+
 /*
 Function: cancelCustomerServiceBookings
 Description: Cancels all service bookings associated with a given customer or technician.
@@ -516,69 +598,47 @@ Description: Cancels all service bookings associated with a given customer or te
 Parameter: const std::string& userID - ID of the customer or technician
 Return type: void
 */
-void ServiceManagementService::cancelCustomerServiceBookings(const std::string& userID)
+void ServiceManagementService::cancelCustomerServiceBookings(const std::string& customerID)
 {
-    const int INCREMENT_VALUE = 1;
     auto& users = m_dataStore.getUsers();
-    int userIndex = users.find(userID);
+    int userIndex = users.find(customerID);
     if (userIndex == -1)
     {
-        throw std::runtime_error("User not found: " + userID);
+        throw std::runtime_error("User not found: " + customerID);
     }
-    User* user = users.getValueAt(userIndex);
-    if (user == nullptr)
+    User* customer = users.getValueAt(userIndex);
+    if (!customer)
     {
-        throw std::runtime_error("User not found: " + userID);
+        throw std::runtime_error("User not found: " + customerID);
     }
-    util::UserType type = user->getUserType();
-    auto& bookings = DataStore::getInstance().getServiceBookings();
-    for (int bookingIterator = 0; bookingIterator < bookings.getSize(); bookingIterator++)
+    auto& bookings = m_dataStore.getServiceBookings();
+    auto& jobs = m_dataStore.getJobCards();
+    for (int iteratorOne = 0; iteratorOne < bookings.getSize(); iteratorOne++)
     {
-        ServiceBooking* booking = bookings.getValueAt(bookingIterator);
-        if (booking != nullptr &&
-            (booking->getCustomerId() == userID || booking->getAssignedTechnicianId() == userID))
+        ServiceBooking* booking = bookings.getValueAt(iteratorOne);
+        if (!booking)
         {
-            if (booking->getStatus() == util::ServiceJobStatus::PENDING ||
-                booking->getStatus() == util::ServiceJobStatus::STARTED)
+            continue;
+        }
+        if (booking->getCustomerId() != customerID)
         {
-                if (type == util::UserType::CUSTOMER)
+            continue;
+        }
+        if (booking->getStatus() != util::ServiceJobStatus::PENDING && booking->getStatus() != util::ServiceJobStatus::STARTED)
         {
-                    booking->setStatus(util::ServiceJobStatus::CANCELLED);
-                    booking->setCustomer(nullptr);
-                    booking->setCustomerId("");
+            continue;
+        }
         User* assignedTechnician = booking->getAssignedTechnician();
-                    std::string title = "Customer Service Cancelled";
-                    std::string message = "The customer has cancelled their service booking. Your assigned job card has been cancelled and the inventory has been restocked.";
-                    sendNotification(assignedTechnician, title, message);
-                }
-                else if (type == util::UserType::TECHNICIAN)
-                {
-                    booking->setStatus(util::ServiceJobStatus::PENDING);
-                    std::string title = "Technician Unavailable";
-                    std::string message = "Your assigned technician is no longer available. Your booking has been reset to pending, and we will reassign a new technician shortly.";
-                    sendNotification(booking->getCustomer(), title, message); 
-                }
-                booking->setAssignedTechnician(nullptr);
-                booking->setAssignedTechnicianId("");
-                const auto& ListOfServices = booking->getServices();
-                for (int serviceIterator = 0; serviceIterator < ListOfServices.getSize(); serviceIterator++)
-                {
-                    Service* service = ListOfServices.getValueAt(serviceIterator);
-                    if (service != nullptr)
-                    {
-                        const auto& items = service->getRequiredInventoryItems();
-                        for (int itemIterator = 0; itemIterator < items.getSize(); itemIterator++)
-                        {
-                            InventoryItem* item = items.getValueAt(itemIterator);
-                            if (item != nullptr)
-                            {
-                                item->setQuantity(item->getQuantity() + INCREMENT_VALUE);
-                            }
-                        }
-                    }
-                }
-            }
-        }
+        std::string titleToTechnician = "Customer Service Cancelled";
+        std::string messageToTechnician = "The customer has cancelled their service booking. Your assigned job card has been cancelled and the inventory has been restocked.";
+        std::string jobTitle = "Job Cancelled";
+        std::string jobMessage = "The job has been cancelled. Your job card has been cancelled and the inventory has been restocked.";
+        processBookingCancellation(booking, 
+            util::ServiceJobStatus::CANCELLED,
+            titleToTechnician, messageToTechnician, assignedTechnician,
+            util::ServiceJobStatus::CANCELLED,
+            jobTitle, jobMessage, jobs, *this
+        );
     }
 }
 
@@ -591,34 +651,48 @@ Return type: void
 */
 void ServiceManagementService::cancelTechnicianJobs(const std::string& technicianID)
 {
-    const int INCREMENT_VALUE = 1;
+    auto& users = m_dataStore.getUsers();
+    int userIndex = users.find(technicianID);
+    if (userIndex == -1)
+    {
+        throw std::runtime_error("User not found: " + technicianID);
+    }
+    User* technician = users.getValueAt(userIndex);
+    if (!technician)
+    {
+        throw std::runtime_error("User not found: " + technicianID);
+    }
+    auto& bookings = m_dataStore.getServiceBookings();
     auto& jobs = m_dataStore.getJobCards();
-    for (int jobIterator = 0; jobIterator < jobs.getSize(); jobIterator++)
+    for (int iteratorOne = 0; iteratorOne < bookings.getSize(); iteratorOne++)
     {
-        JobCard* job = jobs.getValueAt(jobIterator);
-        if (job != nullptr && job->getTechnicianId() == technicianID)
+        ServiceBooking* booking = bookings.getValueAt(iteratorOne);
+        if (!booking)
         {
-            if (job->getStatus() == util::ServiceJobStatus::PENDING || job->getStatus() == util::ServiceJobStatus::STARTED)
-            {
-                job->setStatus(util::ServiceJobStatus::CANCELLED);
-                std::string title = "Job Cancelled";
-                std::string message = "The Job has cancelled. Your job card has been cancelled and the inventory has been restocked.";
-                sendNotification(job->getTechnician(), title, message);
-                Service* service = job->getService();
-                if (service != nullptr)
-                {
-                    const auto& items = service->getRequiredInventoryItems();
-                    for (int itemIterator = 0; itemIterator < items.getSize(); itemIterator++)
-                    {
-                        InventoryItem* item = items.getValueAt(itemIterator);
-                        if (item != nullptr)
-                        {
-                            item->setQuantity(item->getQuantity() + INCREMENT_VALUE);
-                        }
+            continue;
         }
+        std::string technicianId = booking->getAssignedTechnicianId();
+        if (technicianId != technicianID)
+        {
+            continue;
         }
+        if (booking->getStatus() != util::ServiceJobStatus::PENDING && booking->getStatus() != util::ServiceJobStatus::STARTED)
+        {
+            continue;
         }
+        User* customer = booking->getCustomer();
+        if (!customer)
+        {
+            continue;
         }
+        std::string title = "Technician Unavailable";
+        std::string message = "Your assigned technician is no longer available. Your booking has been reset to pending and we will reassign a new technician shortly.";
+        processBookingCancellation(booking,
+            util::ServiceJobStatus::PENDING,
+            title, message, customer,
+            util::ServiceJobStatus::CANCELLED,
+            title, message, jobs, *this
+        );
     }
 }
 
@@ -833,6 +907,9 @@ void ServiceManagementService::createJobCard(const std::string& bookingID, const
 	{
 		throw std::runtime_error("Failed to create job card.");
 	}
+    title = "Technician assigned";
+    message = "A technician has been assigned to your Service Booking with ID " + bookingID;
+    sendNotification(currentBooking->getCustomer(), title, message);
 }
 
 /*
@@ -1055,11 +1132,11 @@ void ServiceManagementService::completeJob(const std::string& jobID)
 	}
 	else
 	{
-		throw std::runtime_error("Failed to complete the job, some error occured or job already completed.");
+		throw std::runtime_error("Failed to complete the job, some error occurred or job already completed.");
 	}
 	if (!jobStatusUpdated)
 	{
-		throw std::runtime_error("Failed to complete the job, some error occured or job already completed.");
+		throw std::runtime_error("Failed to complete the job, some error occurred or job already completed.");
 	}
 
 	serviceBookingCompleted = hasCompletedAllJobs(currentJob->getBookingId(), currentAssignedJobs);
@@ -1067,8 +1144,8 @@ void ServiceManagementService::completeJob(const std::string& jobID)
 	{
 		currentJob->getBooking()->setStatus(util::ServiceJobStatus::COMPLETED);
 		paymentManagementService.generateInvoice(currentJob->getBooking());
-		std::string title = "Service Booking completed,Invoice Generated.\n";
-		std::string message = "Services completed for the booking and invoice generated.\n";
+		std::string title = "Service Booking completed. Invoice Generated.";
+		std::string message = "Services completed for the booking and invoice generated.";
 		sendNotification(currentJob->getBooking()->getCustomer(), title, message);
 	}
 }

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

@@ -297,13 +297,27 @@ Return type: void
 */
 void UserManagementService::removeUser(const std::string& userID)
 {
+	InventoryManagementService inventoryManagementService;
+	PaymentManagementService paymentManagementService;
+	ServiceManagementService serviceManagementService;
 	int index = m_dataStore.getUsers().find(userID);
 	if (index != -1)
 	{
 		User* user = m_dataStore.getUsers().getValueAt(index);
 		if (user != nullptr)
 		{
+			if (user->getUserType() == util::UserType::CUSTOMER)
+			{
+				serviceManagementService.cancelCustomerServiceBookings(userID);	
+			}
+			if (user->getUserType() == util::UserType::TECHNICIAN)
+			{
+				serviceManagementService.cancelTechnicianJobs(userID);
+			}
 			user->setState(util::State::INACTIVE);
+			inventoryManagementService.detach(user);
+			paymentManagementService.detach(user);
+			serviceManagementService.detach(user);
 		}
 	}
 }

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/utilities/Enums.h

@@ -137,6 +137,10 @@ namespace util
         {
             return PaymentMode::OFFLINE;
         }
+        if (value == "NOTSET")
+        {
+            return PaymentMode::NOTSET;
+        }
         throw std::invalid_argument("Invalid PaymentMode string");
     }
 

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/utilities/FileHelper.h

@@ -11,10 +11,39 @@ Date: 22-May-2026
 #include <fstream>
 #include <string>
 #include <stdexcept>
+#include <direct.h>
 #include "Vector.h"
 
 namespace util
 {
+    /*
+    Function: ensureDirectoryExists
+    Description: Creates all missing directories present in the given file path.
+                Iteratively parses the path and creates each directory level
+                using _mkdir() before file operations are performed.
+    Parameters:
+        - filePath: const std::string&, relative or absolute file path
+    Returns:
+        - void
+    Throws:
+        - None (_mkdir failures are intentionally ignored if directory already exists)
+    */
+    inline void ensureDirectoryExists(const std::string& filePath)
+    {
+        size_t position = 0;
+
+        while ((position = filePath.find('/', position)) != std::string::npos)
+        {
+            std::string directory = filePath.substr(0, position);
+
+            if (!directory.empty())
+            {
+                (void)_mkdir(directory.c_str());
+            }
+            position++;
+        }
+    }
+
     /*
     Function: loadRecords
     Description: Loads records from a given file path into a vector of strings.
@@ -32,6 +61,7 @@ namespace util
         std::ifstream file(filePath);
         if (!file.is_open())
         {
+            ensureDirectoryExists(filePath);
             std::ofstream newFile(filePath);
             newFile.close();
             file.open(filePath);

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/utilities/FileManager.h

@@ -15,6 +15,7 @@ Date: 22-May-2026
 #include <fstream>
 #include "Vector.h"
 #include "Map.h"
+#include "FileHelper.h"
 
 namespace util
 {
@@ -51,6 +52,7 @@ namespace util
 		std::ifstream file(m_filePath);
 		if (!file.is_open())
 		{
+			ensureDirectoryExists(m_filePath);
 			std::ofstream newFile(m_filePath);
 			newFile.close();
 			file.open(m_filePath);

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/utilities/OutputHelper.h

@@ -21,4 +21,28 @@ namespace util
     {
         std::cout << "\x1B[2J\x1B[H" << std::flush;
     }
+
+    /*
+    Function: truncateString
+    Description:
+        Truncates a string if its length exceeds the given maximum length.
+        The truncated string ends with "..." to indicate omitted characters.
+    Parameters:
+        - text: const std::string&, input string to truncate
+        - maxLength: size_t, maximum allowed length of the returned string
+    Returns:
+        - std::string: Original string if within limit, otherwise truncated string with "..."
+    */
+    inline std::string truncateString(const std::string& text, size_t maxLength)
+    {
+        if (text.length() <= maxLength)
+        {
+            return text;
+        }
+        if (maxLength <= 3)
+        {
+            return std::string(maxLength, '.');
+        }
+        return text.substr(0, maxLength - 3) + "...";
+    }
 }

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

@@ -42,15 +42,18 @@ void AdminMenu::showMenu()
                 << "\n3. Remove Inventory Item"
                 << "\n4. Check Stock Availability"
                 << "\n5. Assign Job to Technician"
-                << "\n6. Add Technician"
-                << "\n7. Remove Customer/Technician"
-                << "\n8. Create Service"
-                << "\n9. Remove Service"
-                << "\n10. Create Combo Package"
-                << "\n11. Remove Combo Package"
-                << "\n12. View Notifications"
-                << "\n13. Change Password"
-                << "\n14. Logout"
+                << "\n6. Display Users"
+                << "\n7. Add Technician"
+                << "\n8. Remove Customer/Technician"
+                << "\n9. Display Services"
+                << "\n10. Create Service"
+                << "\n11. Remove Service"
+                << "\n12. Display Combo Packages"
+                << "\n13. Create Combo Package"
+                << "\n14. Remove Combo Package"
+                << "\n15. View Notifications"
+                << "\n16. Change Password"
+                << "\n17. Logout"
                 << "\nEnter a choice: ";
             util::read(choice);
             if (!handleOperation(choice))
@@ -92,30 +95,39 @@ bool AdminMenu::handleOperation(int choice)
         assignJob();
         break;
     case 6:
-        addTechnician();
+        displayUsers();
         break;
     case 7:
-        removeUser();
+        addTechnician();
         break;
     case 8:
-        createService();
+        removeUser();
         break;
     case 9:
-        removeService();
+        displayServices();
         break;
     case 10:
-        createComboPackages();
+        createService();
         break;
     case 11:
-        removeComboPackage();
+        removeService();
         break;
     case 12:
-        viewNotifications();
+        displayComboPackages();
         break;
     case 13:
-        changePassword();
+        createComboPackages();
         break;
     case 14:
+        removeComboPackage();
+        break;
+    case 15:
+        viewNotifications();
+        break;
+    case 16:
+        changePassword();
+        break;
+    case 17:
         logout();
         return false;
     default:
@@ -263,6 +275,7 @@ Return type: void
 void AdminMenu::removeInventoryItem()
 {
     util::clear();
+	std::cout << "Remove Inventory Item\n";
     auto inventoryItems = m_controller.getInventoryItems();
     auto activeItems = filterActiveItems(inventoryItems);
     int activeItemsSize = activeItems.getSize();
@@ -382,6 +395,24 @@ void AdminMenu::assignJob()
 	util::pressEnter();
 }
 
+/*
+Function: displayServices()
+Description: Display all active services
+Parameters:
+	- None
+Returns:
+	- void
+*/
+void AdminMenu::displayServices()
+{
+	util::clear();
+	std::cout << "List of all Services\n";
+	util::Map<std::string, const Service*> currentServices = m_controller.getServices();
+	util::Map<std::string, const Service*> currentActiveServices = filterActiveServices(currentServices);
+	displayAllServices(currentActiveServices);
+	util::pressEnter();
+}
+
 /*
 Function: createService
 Description: Allows the admin to create a new service by selecting inventory items and specifying labor cost.
@@ -402,6 +433,11 @@ void AdminMenu::createService()
 	util::Map<std::string, const InventoryItem*> activeInventoryItems = filterActiveItems(currentInventoryItems);
 	util::Vector<std::string> selectedInventoryItems;
 	selectInventoryItems(activeInventoryItems,selectedInventoryItems);
+	if (selectedInventoryItems.isEmpty())
+	{
+		util::pressEnter();
+		return;
+	}
 	std::cout << "\nEnter the labour cost: ";
 	util::read(labourCost);
     m_controller.createService(serviceName, selectedInventoryItems, labourCost);
@@ -428,7 +464,7 @@ void AdminMenu::removeService()
 	if (selectedServiceID != "")
 	{
 		m_controller.removeService(selectedServiceID);
-		std::cout << "Service removed sucessfully.\n\n";
+		std::cout << "Service removed successfully.\n\n";
 	}
 	else
 	{
@@ -437,6 +473,29 @@ void AdminMenu::removeService()
 	util::pressEnter();
 }
 
+/*
+Function: displayUsers
+Description: Displays all users.
+Parameter: None
+Return type: void
+*/
+void AdminMenu::displayUsers()
+{
+	util::clear();
+	auto listOfUsers = m_controller.getUsers();
+	auto listOfActiveUsers = filterActiveUsers(listOfUsers);
+	int activeUserCount = listOfActiveUsers.getSize();
+	std::cout << "List of all Users\n";
+	if (activeUserCount < 1)
+	{
+		std::cout << "No Active users." << std::endl;
+		util::pressEnter();
+		return;
+	}
+	displayAllUsers(listOfActiveUsers);
+	util::pressEnter();
+}
+
 /*
 Function: addTechnician
 Description: Adds a new technician after validating username, password, email, and phone number.
@@ -501,12 +560,12 @@ void AdminMenu::removeUser()
 		util::pressEnter();
 		return;
 	}
-	displayAllActiveUsers(listOfActiveUsers, activeUserCount);
+	displayAllUsers(listOfActiveUsers);
 	std::cout << "Enter the index of the user to delete : ";
 	util::read(indexChoice);
 	if (indexChoice < 1 || indexChoice > activeUserCount)
 	{
-		std::cout << "Error Invaild index.\n" << std::endl;
+		std::cout << "Error invalid index.\n" << std::endl;
 		util::pressEnter();
 		return;
 	}
@@ -520,6 +579,24 @@ void AdminMenu::removeUser()
 	util::pressEnter();
 }
 
+/*
+Function: displayComboPackages()
+Description: Display all active combo packages
+Parameters:
+	- None
+Returns:
+	- void
+*/
+void AdminMenu::displayComboPackages()
+{
+	util::clear();
+	std::cout << "List of all Combo Packages\n";
+	util::Map<std::string, const ComboPackage*> currentComboPackages = m_controller.getComboPackages();
+	util::Map<std::string, const ComboPackage*> currentActiveComboPackages = filterComboPackages(currentComboPackages);
+	displayAllComboPackages(currentActiveComboPackages);
+	util::pressEnter();
+}
+
 /*
 Function: createComboPackages
 Description: Creates a new combo package by selecting two active services and applying a discount.
@@ -541,7 +618,7 @@ void AdminMenu::createComboPackages()
         while (true)
         {
             chosenService = selectServiceFromServices(activeServices);
-            if (chosenService == nullptr)
+            if (!chosenService)
             {
                 std::cout << "Failed to create combo package!\n\n";
                 util::pressEnter();

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/views/AdminMenu.h

@@ -24,10 +24,13 @@ public:
     void removeInventoryItem();
     void checkStockAvailability();
     void assignJob();
+    void displayServices();
     void createService();
     void removeService();
+    void displayUsers();
     void addTechnician();
     void removeUser();
+    void displayComboPackages();
     void createComboPackages();
     void removeComboPackage();
     void viewNotifications();

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

@@ -220,20 +220,24 @@ void CustomerMenu::selectComboPackage()
     util::clear();
     std::cout << "Select a Combo Package\n";
     auto comboPackages = m_controller.getComboPackages();
-    if (comboPackages.isEmpty())
+    util::Map<std::string, const ComboPackage*> activeComboPackages = filterComboPackages(comboPackages);
+    if (activeComboPackages.isEmpty())
     {
-        std::cout << "No combo packages available!";
+        std::cout << "No combo packages available!\n\n";
         util::pressEnter();
         return;
     }
-    const ComboPackage* selectedComboPackage = selectComboPackageFromPackages(comboPackages);
+    const ComboPackage* selectedComboPackage = selectComboPackageFromPackages(activeComboPackages);
     if (selectedComboPackage == nullptr)
     {
-        std::cout << "Failed to book combo package!";
+        std::cout << "Failed to book combo package!\n\n";
         util::pressEnter();
         return;
     }
+    std::cout << "Combo Package selected\n";
+    util::pressEnter();
     util::clear();
+    std::cout << "Enter the vehicle details\n";
     std::cout << "Enter vehicle number: ";
     util::read(vehicleNumber);
     std::cout << "Enter vehicle brand: ";
@@ -241,7 +245,7 @@ void CustomerMenu::selectComboPackage()
     std::cout << "Enter vehicle model: ";
     util::read(vehicleModel);
     m_controller.purchaseComboPackage(selectedComboPackage->getId(), vehicleNumber, vehicleBrand, vehicleModel);
-    std::cout << "Combo Package has been booked successfully";
+    std::cout << "Combo Package has been booked successfully\n\n";
     util::pressEnter();
 }
 

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

@@ -29,6 +29,41 @@ Date: 21-May-2026
 #include "Validator.h"
 #include "Vector.h"
 
+/*
+Function: displayAllServices
+Description: Displays all active services
+Parameters:
+    - currentServices: util::Map<std::string, const Service*>, available services
+Returns:
+    - void;
+*/
+inline void displayAllServices(util::Map<std::string, const Service*> currentServices)
+{
+    if (currentServices.getSize() == 0)
+    {
+        std::cout << "No Services Currently Available.\n";
+        return;
+    }
+    std::cout << std::left
+        << std::setw(12) << "Service ID"
+        << std::setw(35) << "Name"
+        << std::setw(10) << "Labor Cost"
+        << std::endl;
+    for (int iterator = 0; iterator < currentServices.getSize(); iterator++)
+    {
+        const Service* currentService = currentServices.getValueAt(iterator);
+        if (currentService == nullptr || currentService->getState() == util::State::INACTIVE)
+        {
+            continue;
+        }
+        std::cout << std::left
+            << std::setw(12) << currentService->getId()
+            << std::setw(35) << util::truncateString(currentService->getName(), 30)
+            << std::setw(10) << currentService->getLaborCost()
+            << std::endl;
+    }
+}
+
 /*
 Function: selectServicesToRemove
 Description: Allows selection of a service to remove by index.
@@ -49,7 +84,7 @@ inline std::string selectServicesToRemove(util::Map<std::string, const Service*>
     std::cout << std::left
         << std::setw(6) << "Index"
         << std::setw(12) << "Service ID"
-        << std::setw(20) << "Name"
+        << std::setw(35) << "Name"
         << std::setw(10) << "Labor Cost"
         << std::endl;
     for (int iterator = 0; iterator < currentServices.getSize(); iterator++)
@@ -62,7 +97,7 @@ inline std::string selectServicesToRemove(util::Map<std::string, const Service*>
         std::cout << std::left
             << std::setw(6) << currentIndex
             << std::setw(12) << currentService->getId()
-            << std::setw(20) << currentService->getName()
+            << std::setw(35) << util::truncateString(currentService->getName(), 30)
             << std::setw(10) << currentService->getLaborCost()
             << std::endl;
         currentServicesMap.insert(currentIndex++, currentService);
@@ -94,13 +129,15 @@ inline void selectInventoryItems(util::Map<std::string, const InventoryItem*>& c
     bool doRun = true;
     util::Map<int, const InventoryItem*> currentInventoryMap;
     int choice;
-    if (currentInventoryItems.getSize() == 0)
+    if (currentInventoryItems.isEmpty())
     {
         std::cout << "No Items Present, Inventory empty.\n";
         return;
     }
     while (doRun)
     {
+        util::clear();
+        std::cout << "Create Service\n";
         std::cout << "\nSelect Required Items\n";
         bool hasInventoryItems = false;
         int currentIndex = 1;
@@ -119,6 +156,19 @@ inline void selectInventoryItems(util::Map<std::string, const InventoryItem*>& c
             {
                 continue;
             }
+            bool alreadySelected = false;
+            for (int iteratorOne = 0; iteratorOne < selectedInventoryItems.getSize(); iteratorOne++)
+            {
+                if (selectedInventoryItems[iteratorOne] == currentInventoryItem->getId())
+                {
+                    alreadySelected = true;
+                    break;
+                }
+            }
+            if (alreadySelected)
+            {
+                continue;
+            }
             std::cout << std::left
                 << std::setw(6) << currentIndex
                 << std::setw(12) << currentInventoryItem->getId()
@@ -133,10 +183,9 @@ inline void selectInventoryItems(util::Map<std::string, const InventoryItem*>& c
         {
             break;
         }
-        std::cout << "Select the item (Index) or enter -1 to exit: ";
+        std::cout << "Select the item (Index) or enter 0 to exit: ";
         util::read(choice);
-
-        if (choice == -1)
+        if (choice == 0)
         {
             doRun = false;
         }
@@ -144,6 +193,7 @@ inline void selectInventoryItems(util::Map<std::string, const InventoryItem*>& c
         {
             selectedInventoryItems.push_back(currentInventoryMap.getValueAt(currentInventoryMap.find(choice))->getId());
             std::cout << "Item added successfully.\n" << std::endl;
+            util::pressEnter();
         }
         else
         {
@@ -160,7 +210,7 @@ Parameters:
 Returns:
     - util::Map<std::string, const ServiceBooking*>: map containing only active (PENDING) service bookings
 */
-inline util::Map<std::string, const ServiceBooking*> filterActiveServiceBookings(util::Map<std::string, const ServiceBooking*> currentBookings)
+inline util::Map<std::string, const ServiceBooking*> filterActiveServiceBookings(util::Map<std::string, const ServiceBooking*>& currentBookings)
 {
     util::Map<std::string, const ServiceBooking*> activeServiceBookings;
     for (int iterator = 0; iterator < currentBookings.getSize(); iterator++)
@@ -201,8 +251,6 @@ inline bool listServiceBookings(util::Map<std::string, const ServiceBooking*>& c
         << std::setw(15) << "VehicleNo"
         << std::setw(15) << "Brand"
         << std::setw(15) << "Model"
-        << std::setw(20) << "Technician"
-        << std::setw(15) << "TechnicianID"
         << std::endl;
     for (int iterator = 0; iterator < bookingsSize; iterator++)
     {
@@ -219,8 +267,6 @@ inline bool listServiceBookings(util::Map<std::string, const ServiceBooking*>& c
                 << std::setw(15) << currentBooking->getVehicleNumber()
                 << std::setw(15) << currentBooking->getVehicleBrand()
                 << std::setw(15) << currentBooking->getVehicleModel()
-                << std::setw(20) << ((currentAssignedTechnician == nullptr || currentAssignedTechnician->getName().empty()) ? "NULL" : currentAssignedTechnician->getName())
-                << std::setw(15) << ((currentAssignedTechnician == nullptr || currentAssignedTechnician->getId().empty()) ? "NULL" : currentAssignedTechnician->getId())
                 << std::endl;
             serviceBookingsMap.insert(currentIndex++, currentBooking);
         }
@@ -239,7 +285,7 @@ Returns:
 inline const ServiceBooking* selectPendingServiceBookings(util::Map<int, const ServiceBooking*>& serviceBookingsMap)
 {
 	int userInputIndex;
-	std::cout << "\nEnter a valid service index: ";
+	std::cout << "\nEnter a service index: ";
     util::read(userInputIndex);
 	if (serviceBookingsMap.find(userInputIndex) != -1)
     {
@@ -304,7 +350,7 @@ Returns:
 inline const User* selectTechnician(util::Map<int, const User*>& currentAvailableTechniciansMap)
 {
     int userInputIndex;
-    std::cout << "\nEnter valid technician index: ";
+    std::cout << "\nEnter technician index: ";
     util::read(userInputIndex);
     if (currentAvailableTechniciansMap.find(userInputIndex) != -1)
     {
@@ -327,19 +373,18 @@ Returns:
 */
 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
-		<< std::setw(6) << "Index"
-		<< std::setw(12) << "BookingID"
-		<< std::setw(15) << "VehicleBrand"
-		<< std::setw(15) << "VehicleNumber"
-		<< std::setw(12) << "Technician ID"
-		<< std::setw(20) << "Technician Name"
-		<< std::setw(10) << "Discount(%)"
-		<< std::setw(12) << "TotalAmount"
-		<< std::setw(20) << "InvoiceDate"
+        << std::setw(8) << "Index"
+        << std::setw(15) << "Booking ID"
+        << std::setw(20) << "Vehicle Brand"
+        << std::setw(20) << "Vehicle Number"
+        << std::setw(18) << "Technician ID"
+        << std::setw(25) << "Technician Name"
+        << std::setw(15) << "Discount(%)"
+        << std::setw(15) << "TotalAmount"
+        << std::setw(22) << "Invoice Timestamp"
         << std::endl;
 	for (int iterator = 0; iterator < currentInvoices.getSize(); iterator++)
 	{
@@ -348,17 +393,17 @@ inline std::string selectInvoiceFromUserForPayment(const util::Map<std::string,
 {
 			const User* currentTechnician = currentInvoice->getBooking()->getAssignedTechnician();
             std::cout << std::left
-				<< std::setw(6) << currentIndex
-				<< std::setw(12) << currentInvoice->getBookingId()
-				<< std::setw(15) << currentInvoice->getBooking()->getVehicleBrand()
-				<< std::setw(15) << currentInvoice->getBooking()->getVehicleNumber()
-				<< std::setw(12) << ((currentTechnician != nullptr && currentTechnician->getId() != "") ? 
+                << std::setw(8) << currentIndex
+                << std::setw(15) << currentInvoice->getBookingId()
+                << std::setw(20) << currentInvoice->getBooking()->getVehicleBrand()
+                << std::setw(20) << currentInvoice->getBooking()->getVehicleNumber()
+                << std::setw(18) << ((currentTechnician != nullptr && currentTechnician->getId() != "") ?
                     currentTechnician->getId() : "Null")
-				<< std::setw(20) << ((currentTechnician != nullptr && currentTechnician->getName() != "") ? 
+                << std::setw(25) << ((currentTechnician != nullptr && currentTechnician->getName() != "") ?
                     currentTechnician->getName() : "Null")
-				<< std::setw(10) << currentInvoice->getDiscountPercentage()
-				<< std::setw(12) << currentInvoice->getTotalAmount()
-				<< std::setw(20) << currentInvoice->getInvoiceDate().toString()
+                << std::setw(15) << currentInvoice->getDiscountPercentage()
+                << std::setw(15) << currentInvoice->getTotalAmount()
+                << std::setw(22) << currentInvoice->getInvoiceDate().toString()
                 << std::endl;
 			pendingInvoicesForPayment.insert(currentIndex++, currentInvoice);
 		}
@@ -394,6 +439,9 @@ Returns:
 inline util::PaymentMode selectPaymentMode()
 {
     int choice;
+    while (true)
+    {
+        util::clear();
         std::cout << "Enter the payment Mode\n1.OFFLINE\n2.ONLINE\nChoice: ";
         util::read(choice);
         if (choice == 1)
@@ -408,8 +456,76 @@ inline util::PaymentMode selectPaymentMode()
         }
         else
         {
-		std::cout << "Invalid choice. Offline mode selected.\n";
-		return util::PaymentMode::OFFLINE;
+            std::cout << "Invalid choice. Try again.\n";
+            util::pressEnter();
+        }
+    }
+}
+
+/*
+Function: displayInvoicesInTabularForm
+Description:
+    Displays all invoices in a tabular format. Each row shows booking details,
+    vehicle info, technician details, discount, total amount, invoice date,
+    and payment status. If inventory items exist for an invoice, they are
+    displayed in a separate table below the invoice row.
+Parameters:
+    - currentInvoices: util::Map<std::string, const Invoice*>
+      Map of invoice IDs to Invoice pointers.
+Returns:
+    - void
+*/
+inline const Invoice* selectInvoiceToDisplay(util::Map<std::string, const Invoice*>& currentInvoices)
+{
+    int currentIndex = 1, choice;
+    util::Map<int, const Invoice*> currentInvoicesIndexMap;
+    if (currentInvoices.isEmpty())
+    {
+        std::cout << "No invoices available.\n\n";
+        return nullptr;
+    }
+    std::cout  
+        << std::left
+        << std::setw(10) << "Index"
+        << std::setw(12) << "BookingID"
+        << std::setw(20) << "Vehicle Number"
+        << std::setw(20) << "Technician Name"
+        << std::setw(15) << "Total Amount"
+        << std::setw(25) << "Invoice Date"
+        << std::setw(20) << "Payment Status"
+        << std::setw(15) << "Payment Mode"
+        << std::endl;
+    for (int iterator = 0; iterator < currentInvoices.getSize(); iterator++)
+    {
+        const Invoice* currentInvoice = currentInvoices.getValueAt(iterator);
+        if (!currentInvoice)
+        {
+            continue;
+        }
+        const User* currentTechnician = currentInvoice->getBooking()->getAssignedTechnician();
+        std::cout << std::left
+            << std::setw(10) << currentIndex
+            << std::setw(12) << currentInvoice->getBookingId()
+            << std::setw(20) << currentInvoice->getBooking()->getVehicleNumber()
+            << std::setw(20) << ((currentTechnician && !currentTechnician->getName().empty()) ? currentTechnician->getName() : "NULL")
+            << std::setw(15) << currentInvoice->getTotalAmount()
+            << std::setw(25) << currentInvoice->getInvoiceDate().toString()
+            << std::setw(20) << util::getPaymentStatusString(currentInvoice->getStatus())
+            << std::setw(15) << util::getPaymentModeString(currentInvoice->getPaymentMethod())
+            << std::endl;
+        currentInvoicesIndexMap.insert(currentIndex++, currentInvoice);
+    }
+    std::cout << "Enter an index: ";
+    util::read(choice);
+    int currentSelectedIndex = currentInvoicesIndexMap.find(choice);
+    if (currentSelectedIndex != -1)
+    {
+        return currentInvoicesIndexMap.getValueAt(currentSelectedIndex);
+    }
+    else
+    {
+        std::cout << "Enter a valid index.\n";
+        return nullptr;
     }
 }
 
@@ -426,34 +542,48 @@ Throws:
 */
 inline void displayInvoices(util::Map<std::string, const Invoice*> currentUserInvoices)
 {
+    std::cout << std::endl;
     if (currentUserInvoices.getSize() == 0)
     {
-        std::cout << "No invoices found for this account." << std::endl << std::endl;
+        std::cout << "No invoices found for this account.\n\n";
         return;
     }
     else
     {
-        for (int index = 0; index < currentUserInvoices.getSize(); index++)
+        bool doRun = true;
+        do
         {
-            const Invoice* currentInvoice = currentUserInvoices.getValueAt(index);
-            if (currentInvoice)
+            const Invoice* selectedInvoice;
+            int choice;
+            selectedInvoice = selectInvoiceToDisplay(currentUserInvoices);
+            if (selectedInvoice)
             {
-                const User* currentTechnician = currentInvoice->getBooking()->getAssignedTechnician();
-                std::cout << "\nInvoice Details\n";
-                std::cout << "Booking ID: " << currentInvoice->getBookingId() << std::endl;
-                std::cout << "Vehicle Brand: " << currentInvoice->getBooking()->getVehicleBrand() << std::endl;
-                std::cout << "Vehicle Number: " << currentInvoice->getBooking()->getVehicleNumber() << std::endl;
-                std::cout << "Technician ID: " <<
-                    ((currentTechnician != nullptr && currentTechnician->getId() != "") ?
-                        currentTechnician->getId() : "Null") << std::endl;
-                std::cout << "Technician Name: " <<
-                    ((currentTechnician != nullptr && currentTechnician->getName() != "") ?
-                        currentTechnician->getName() : "Null") << std::endl;
-                std::cout << "Discount(%): " << currentInvoice->getDiscountPercentage() << std::endl;
-                std::cout << "Total Amount: " << currentInvoice->getTotalAmount() << std::endl;
-                std::cout << "Invoice Date: " << currentInvoice->getInvoiceDate().toString() << std::endl;
-                std::cout << "Payment Status: " << util::getPaymentStatusString(currentInvoice->getStatus()) << std::endl;
-                auto inventoryItemsInInvoice = currentInvoice->getParts();
+                const User* currentTechnician = selectedInvoice->getBooking()->getAssignedTechnician();
+                util::clear();
+                std::cout << "Invoice Details\n";
+                std::cout << std::left << std::setw(20) << "Booking ID:"
+                    << selectedInvoice->getBookingId() << std::endl;
+                std::cout << std::left << std::setw(20) << "Vehicle Brand:"
+                    << selectedInvoice->getBooking()->getVehicleBrand() << std::endl;
+                std::cout << std::left << std::setw(20) << "Vehicle Number:"
+                    << selectedInvoice->getBooking()->getVehicleNumber() << std::endl;
+                std::cout << std::left << std::setw(20) << "Technician ID:"
+                    << ((currentTechnician != nullptr && !currentTechnician->getId().empty())
+                        ? currentTechnician->getId() : "NULL") << std::endl;
+                std::cout << std::left << std::setw(20) << "Technician Name:"
+                    << ((currentTechnician != nullptr && !currentTechnician->getName().empty())
+                        ? currentTechnician->getName() : "NULL") << std::endl;
+                std::cout << std::left << std::setw(20) << "Discount(%):"
+                    << selectedInvoice->getDiscountPercentage() << std::endl;
+                std::cout << std::left << std::setw(20) << "Total Amount:"
+                    << selectedInvoice->getTotalAmount() << std::endl;
+                std::cout << std::left << std::setw(20) << "Invoice Date:"
+                    << selectedInvoice->getInvoiceDate().toString() << std::endl;
+                std::cout << std::left << std::setw(20) << "Payment Status:"
+                    << util::getPaymentStatusString(selectedInvoice->getStatus()) << std::endl;
+                std::cout << std::left << std::setw(20) << "Payment Mode:"
+                    << util::getPaymentModeString(selectedInvoice->getPaymentMethod()) << std::endl;
+                auto inventoryItemsInInvoice = selectedInvoice->getParts();
                 if (inventoryItemsInInvoice.isEmpty())
                 {
                     std::cout << "No inventory items used.\n\n";
@@ -475,14 +605,89 @@ inline void displayInvoices(util::Map<std::string, const Invoice*> currentUserIn
                         << std::setw(10) << currentItem->getPrice()
                         << std::endl;
                 }
+                std::cout << "\n\nDo you want to display another Invoice (1-Yes, 2-No): ";
+                util::read(choice);
+                if (choice == 1)
+                {
+                    doRun = true;
+                    util::clear();
+                }
+                else if (choice == 2)
+                {
+                    doRun = false;
                 }
                 else
                 {
-                throw std::runtime_error("Null invoice encountered while displaying invoices.");
+                    std::cout << "Invalid choice\n";
+                    doRun = false;
                 }
             }
+            else
+            {
+                std::cout << "Unable to fetch the selected invoice\n";
+                doRun = false;
+            }
+
+        } while (doRun);
+    }
+}
+
+/*
+Function: filterStartedJobCards
+Description: Filters the given list of job cards and returns only those with status STARTED.
+Parameters:
+    - assignedJobCards: Map of job card IDs to JobCard pointers.
+Returns:
+    - util::Map<std::string, const JobCard*> containing only job cards with status STARTED.
+*/
+inline util::Map<std::string, const JobCard*> filterStartedJobCards(util::Map<std::string, const JobCard*>& assignedJobCards)
+{
+    util::Map<std::string, const JobCard*> startedJobCards;
+    for (int iterator = 0; iterator  < assignedJobCards.getSize(); iterator++)
+    {
+        const JobCard* currentJobCard = assignedJobCards.getValueAt(iterator);
+        if (currentJobCard && currentJobCard->getStatus() == util::ServiceJobStatus::STARTED)
+        {
+            startedJobCards.insert(currentJobCard->getId(), currentJobCard);
+        }
+    }
+    return startedJobCards;
+}
+
+/*
+Function: displayAllJobs
+Description: Displays all Jobs assigned to a Technician
+Parameters:
+    - assignedJobCards: util::Map<std::string, const JobCard*>&, job cards assigned to the technician
+Returns:
+    - std::string: ID of the selected job card, or empty string if none selected
+*/
+inline void displayAllJobs(util::Map<std::string, const JobCard*>& assignedJobCards)
+{
+    if (assignedJobCards.getSize() == 0)
+    {
+        std::cout << "No active jobs assigned.\n";
+        return;
+    }
+    std::cout << std::endl;
+    std::cout << std::left
+        << std::setw(12) << "BookingID"
+        << std::setw(12) << "JobID"
+        << std::setw(20) << "ServiceName"
+        << std::setw(12) << "ServiceID"
+        << std::endl;
+    for (int iterator = 0; iterator < assignedJobCards.getSize(); iterator++)
+    {
+        const JobCard* currentJobCard = assignedJobCards.getValueAt(iterator);
+        if (currentJobCard && (currentJobCard->getStatus() == util::ServiceJobStatus::STARTED))
+        {
+            std::cout << std::left << std::setw(12) << currentJobCard->getBookingId()
+                << std::setw(12) << currentJobCard->getId()
+                << std::setw(20) << currentJobCard->getService()->getName()
+                << std::setw(12) << currentJobCard->getServiceId()
+                << std::endl;
+        }
     }
-    util::pressEnter();
 }
 
 /*
@@ -490,15 +695,20 @@ Function: selectJobCardToComplete
 Description: Lists all incomplete job cards assigned to the technician and allows selection by index.
 Parameters:
 	- assignedJobCards: util::Map<std::string, const JobCard*>&, job cards assigned to the technician
-	- incompleteJobCards: util::Map<int, const JobCard*>&, map of incomplete job cards indexed for selection
 Returns:
 	- std::string: ID of the selected job card, or empty string if none selected
 */
-inline 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;
+    if (assignedJobCards.getSize() == 0)
     {
+        std::cout << "No started jobs available to complete.\n";
+        return "";
+    }
     int currentIndex = 1;
     int choice;
-	bool hasIncompleteJobCard = false;
+    std::cout << std::endl;
     std::cout << std::left
         << std::setw(6) << "Index"
         << std::setw(12) << "BookingID"
@@ -517,14 +727,8 @@ inline std::string selectJobCardToComplete(util::Map<std::string, const JobCard*
                 << std::setw(20) << currentJobCard->getService()->getName()
                 << std::setw(12) << currentJobCard->getServiceId()
                 << std::endl;
-			hasIncompleteJobCard = true;
             incompleteJobCards.insert(currentIndex++, currentJobCard);
         }
-    }
-	if (!hasIncompleteJobCard)
-    {
-		std::cout << "No pending jobs are present.\n";
-		return "";
     }
     std::cout << "Select the Job Card to complete (Index): ";
     util::read(choice);
@@ -537,6 +741,7 @@ inline std::string selectJobCardToComplete(util::Map<std::string, const JobCard*
     else
     {
         std::cout << "Invalid index.\n";
+        std::cout << "Failed to complete jobs.\n\n";
         return "";
     }
 }
@@ -553,9 +758,9 @@ inline const Notification* selectNotification(const util::Vector<const Notificat
 {
     util::Map<int, const Notification*> indexedNotifications;
     std::cout << std::left
-        << std::setw(6) << "Index"
+        << std::setw(10) << "Index"
         << std::setw(15) << "ID"
-        << std::setw(30) << "Title"
+        << std::setw(35) << "Title"
         << std::setw(25) << "Timestamp"
         << std::endl;
     int currentIndex = 1;
@@ -565,9 +770,9 @@ inline const Notification* selectNotification(const util::Vector<const Notificat
         if (currentNotification)
         {
             std::cout << std::left
-                << std::setw(6) << currentIndex
+                << std::setw(10) << currentIndex
                 << std::setw(15) << currentNotification->getId()
-                << std::setw(35) << currentNotification->getTitle()
+                << std::setw(35) << util::truncateString(currentNotification->getTitle(), 30)
                 << std::setw(25) << currentNotification->getCreatedAt().toString()
                 << std::endl;
             indexedNotifications.insert(currentIndex, currentNotification);
@@ -709,17 +914,18 @@ inline util::Map<std::string, const User*> filterActiveUsers(const util::Map<std
 }
 
 /*
-Function: displayAllActiveUsers
+Function: displayAllUsers
 Description: Displays all active users in a tabular format with index, ID, username, and type.
 Parameter: util::Map<std::string, const User*>& activeUsers - active users list
-           int activeUserCount - number of active users
 Return type: void
 */
-inline void displayAllActiveUsers(util::Map<std::string, const User*>& activeUsers, int activeUserCount)
+inline void displayAllUsers(util::Map<std::string, const User*>& activeUsers)
 {
+    int activeUserCount = activeUsers.getSize();
     std::cout << std::left << std::setw(10) << "Index"
         << std::setw(15) << "User ID"
         << std::setw(25) << "Username"
+        << std::setw(25) << "Full Name"
         << std::setw(25) << "User Type"
         << std::endl;
     for (int iterator = 0; iterator < activeUserCount; iterator++)
@@ -730,6 +936,7 @@ inline void displayAllActiveUsers(util::Map<std::string, const User*>& activeUse
             std::cout << std::left << std::setw(10) << (iterator + 1)
                 << std::setw(15) << user->getId()
                 << std::setw(25) << user->getUserName()
+                << std::setw(25) << user->getName()
                 << std::setw(25) << util::getUserTypeString(user->getUserType())
                 << std::endl;
         }
@@ -750,7 +957,7 @@ Parameters:
 Returns:
     - util::Map<std::string, const Service*> containing only active services.
 */
-inline util::Map<std::string, const Service*> filterActiveServices(util::Map<std::string, const Service*> serviceList)
+inline util::Map<std::string, const Service*> filterActiveServices(util::Map<std::string, const Service*>& serviceList)
 {
     util::Map<std::string, const Service*> activeServices;
     for (int iterator = 0; iterator < serviceList.getSize(); iterator++)
@@ -777,10 +984,10 @@ inline const Service* selectServiceFromServices(const util::Map<std::string, con
         std::cout << "No active services available." << std::endl;
         return nullptr;
     }
+    std::cout << std::endl;
     util::Map<int, const Service*> activeServicesMap;
     int currentIndex = 1;
     int userInputIndex;
-    std::cout << std::endl;
     std::cout << std::left
         << std::setw(10) << "Index"
         << std::setw(15) << "Service ID"
@@ -824,6 +1031,68 @@ inline const Service* selectServiceFromServices(const util::Map<std::string, con
     return activeServicesMap[userInputIndex];
 }
 
+/*
+Function: filterComboPackages
+Description:
+    Filters the given list of combo packages and returns only those that are ACTIVE.
+Parameters:
+    - comboPackages: util::Map<std::string, const ComboPackage*>&
+      Map of combo package IDs to ComboPackage pointers.
+Returns:
+    - util::Map<std::string, const ComboPackage*>
+      Map containing only active combo packages.
+*/
+inline util::Map<std::string, const ComboPackage*> filterComboPackages(util::Map<std::string, const ComboPackage*>& comboPackages)
+{
+    util::Map<std::string, const ComboPackage*> activeComboPackages;
+    for (int iterator = 0; iterator < comboPackages.getSize(); iterator++)
+    {
+        const ComboPackage* currentComboPackage = comboPackages.getValueAt(iterator);
+        if (currentComboPackage && currentComboPackage->getState() == util::State::ACTIVE)
+        {
+            activeComboPackages.insert(currentComboPackage->getId(), currentComboPackage);
+        }
+    }
+    return activeComboPackages;
+}
+
+/*
+Function: displayAllComboPackages
+Description: Displays all active combo packages
+Parameters:
+    - currentComboPackages: util::Map<std::string, const ComboPackage*>, available combo packages
+Returns:
+    - void;
+*/
+inline void displayAllComboPackages(util::Map<std::string, const ComboPackage*> comboPackages)
+{
+    std::cout << std::endl;
+    if (comboPackages.getSize() == 0)
+    {
+        std::cout << "No active combo packages available." << std::endl;
+        return;
+    }
+    std::cout << std::left
+        << std::setw(15) << "Combo ID"
+        << std::setw(35) << "Combo Name"
+        << std::setw(15) << "Estimate Cost"
+        << std::endl;
+    for (int index = 0; index < comboPackages.getSize(); index++)
+    {
+        const ComboPackage* currentComboPackage = comboPackages.getValueAt(index);
+        if (currentComboPackage && currentComboPackage->getState() != util::State::ACTIVE)
+        {
+            continue;
+        }
+        std::cout << std::left
+            << std::setw(15) << currentComboPackage->getId()
+            << std::setw(35) << util::truncateString(currentComboPackage->getPackageName(), 30)
+            << std::setw(15) << util::calculateComboServiceEstimatedCost(currentComboPackage)
+            << std::endl;
+    }
+}
+
+
 /*
 Function: selectComboPackageFromPackages
 Description: Displays active combo packages and allows the customer to select one by index.
@@ -835,16 +1104,17 @@ inline const ComboPackage* selectComboPackageFromPackages(const util::Map<std::s
     util::Map<int, const ComboPackage*> activeComboPackages;
     int currentIndex = 1;
     int userInputIndex;
+    std::cout << std::endl;
     std::cout << std::left
         << std::setw(10) << "Index"
         << std::setw(15) << "Combo ID"
-        << std::setw(15) << "Combo Name"
+        << std::setw(35) << "Combo Name"
         << std::setw(15) << "Estimate Cost"
         << std::endl;
     for (int index = 0; index < comboPackages.getSize(); index++)
     {
         const ComboPackage* currentComboPackage = comboPackages.getValueAt(index);
-        if (currentComboPackage->getState() != util::State::ACTIVE)
+        if (currentComboPackage && currentComboPackage->getState() != util::State::ACTIVE)
         {
             continue;
         }
@@ -852,7 +1122,7 @@ inline const ComboPackage* selectComboPackageFromPackages(const util::Map<std::s
         std::cout << std::left
             << std::setw(10) << currentIndex
             << std::setw(15) << currentComboPackage->getId()
-            << std::setw(25) << currentComboPackage->getPackageName()
+            << std::setw(35) << util::truncateString(currentComboPackage->getPackageName(), 30)
             << std::setw(15) << util::calculateComboServiceEstimatedCost(currentComboPackage)
             << std::endl;
         currentIndex++;
@@ -886,7 +1156,7 @@ inline bool getNotificationPreference(const std::string& serviceName)
     while (true)
     {
         util::clear();
-        std::cout << "    Configure Notification Preferences\n";
+        std::cout << "Configure Notification Preferences\n";
         std::cout << "\n" << serviceName << " Notifications\n";
         std::cout << "1. Enable Notifications\n";
         std::cout << "2. Disable Notifications\n";
@@ -920,7 +1190,7 @@ inline util::Map<std::string, const InventoryItem*> filterActiveItems(const util
     for (int index = 0; index < inventorySize; index++)
     {
         const InventoryItem* item = inventoryItems.getValueAt(index);
-        if (item != nullptr && item->getState() != util::State::INACTIVE)
+        if (item && item->getState() != util::State::INACTIVE)
         {
             activeItems.insert(item->getId(), item);
         }
@@ -1025,21 +1295,21 @@ inline void displayComboPackagesWithIndex(util::Map<int, const ComboPackage*>& c
         const ComboPackage* currentComboPackage = currentComboPackageIndexMap.getValueAt(iterator);
         if (currentComboPackage == nullptr)
         {
-            throw std::runtime_error("Error accessing the combopackage.\n");
+            throw std::runtime_error("Error accessing the combo package.\n");
         }
         if (iterator == 0)
         {
             std::cout << std::left
                 << std::setw(8) << "Index"
                 << std::setw(10) << "ID"
-                << std::setw(20) << "Package Name"
+                << std::setw(35) << "Package Name"
                 << std::setw(15) << "Discount (%)"
                 << "\n";
         }
         std::cout << std::left
             << std::setw(8) << currentComboPackageIndexMap.getKeyAt(iterator)
             << std::setw(10) << currentComboPackage->getId()
-            << std::setw(20) << currentComboPackage->getPackageName()
+            << std::setw(35) << util::truncateString(currentComboPackage->getPackageName(), 30)
             << std::setw(15) << currentComboPackage->getDiscountPercentage()
             << "\n";
     }

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/views/TechnicianMenu.cpp

@@ -34,10 +34,11 @@ void TechnicianMenu::showMenu()
             int choice;
             util::clear();
             std::cout << "Technician Menu"
-                << "\n1. Mark Job as Completed"
-                << "\n2. View Notifications"
-                << "\n3. Change Password"
-                << "\n4. Logout"
+                << "\n1. Display My Jobs"
+                << "\n2. Mark Job as Completed"
+                << "\n3. View Notifications"
+                << "\n4. Change Password"
+                << "\n5. Logout"
                 << "\nEnter a choice: ";
             util::read(choice);
             if (!handleOperation(choice))
@@ -64,15 +65,18 @@ bool TechnicianMenu::handleOperation(int choice)
     switch (choice)
     {
     case 1:
-        completeJob();
+        displayJobs();
         break;
     case 2:
-        viewNotifications();
+        completeJob();
         break;
     case 3:
-        changePassword();
+        viewNotifications();
         break;
     case 4:
+        changePassword();
+        break;
+    case 5:
         logout();
         return false;
     default:
@@ -82,6 +86,24 @@ bool TechnicianMenu::handleOperation(int choice)
     return true;
 }
 
+/*
+Function: displayJobs
+Description: Displays all Jobs assigned to a Technician
+Parameters:
+    - None
+Returns:
+    - void
+*/
+void TechnicianMenu::displayJobs()
+{
+    util::clear();
+    std::cout << "My Jobs\n";
+    util::Map<std::string, const JobCard*> assignedJobCards = m_controller.getJobCardsByUser();
+    util::Map<std::string, const JobCard*> startedJobCards = filterStartedJobCards(assignedJobCards);
+    displayAllJobs(startedJobCards);
+    util::pressEnter();
+}
+
 /*
 Function: completeJob
 Description: Allows the technician to mark a selected job card as completed.
@@ -93,18 +115,15 @@ Returns:
 */
 void TechnicianMenu::completeJob()
 {
+    util::clear();
+    std::cout << "Complete Job\n";
 	util::Map<std::string, const JobCard*> assignedJobCards = m_controller.getJobCardsByUser();
-	util::Map<int, const JobCard*> incompleteJobCards;
-	std::cout << "Jobs to be completed.\n";
-	std::string selectedJobID = selectJobCardToComplete(assignedJobCards, incompleteJobCards);
-	if (selectedJobID == "")
-	{
-		std::cout << "Failed to complete the job.\n";
-	}
-	else
+    util::Map<std::string, const JobCard*> startedJobCards = filterStartedJobCards(assignedJobCards);
+	std::string selectedJobID = selectJobCardToComplete(startedJobCards);
+    if (!selectedJobID.empty())
 	{
 		m_controller.completeJob(selectedJobID);
-		std::cout << "Job marked as completed.\n";
+		std::cout << "\nJob marked as completed.\n\n";
 	}
     util::pressEnter();
 }

Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/views/TechnicianMenu.h

@@ -17,6 +17,7 @@ private:
     bool handleOperation(int choice);
 public:
     void showMenu();
+    void displayJobs();
     void completeJob();
     void viewNotifications();
     void logout();

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

@@ -7,6 +7,8 @@ Author: Trenser
 Date:19-May-2026
 */
 
+#include <iostream>
+#include <stdexcept>
 #include "Enums.h"
 #include "InputHelper.h"
 #include "OutputHelper.h"
@@ -23,6 +25,8 @@ Return type: void
 */
 void UserInterface::run()
 {
+	try
+	{
 		m_controller.loadSystemData();
 		m_controller.runSystemChecks();
 		bool isMenuActive = true;
@@ -46,6 +50,19 @@ void UserInterface::run()
 			}
 		}
 		m_controller.saveSystemData();
+	}
+	catch (const std::invalid_argument& exception)
+	{
+		std::cout << "Exception: Invalid Argument: " << exception.what() << std::endl;
+	}
+	catch (const std::exception& exception)
+	{
+		std::cout << "Exception: " << exception.what() << std::endl;
+	}
+	catch (...)
+	{
+		std::cout << "Unknown error occurred." << std::endl;
+	}
 }
 
 /*