Fix login validation and improve error messages

- Check if user account is inactive before allowing login
- Add password confirmation in change password dialog
- Prevent changing password to the same value
- Standardize error messages to say "Invalid index" instead of "Invalid choice"
- Add blank line before system pause prompt
- Add "Change Password" header to change password screen
- Show error message when login fails

Fixes #1738
Fixes #1736

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/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 "";
     }
 }
@@ -359,7 +359,7 @@ static std::string selectInvoiceFromUserForPayment(const util::Map<std::string,
         }
 	else
 	{
-		std::cout << "Invalid choice.\n";
+		std::cout << "Invalid index.\n";
 		return "";
     }
 }
@@ -389,7 +389,7 @@ 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;
     }
 }
@@ -513,7 +513,7 @@ static std::string selectJobCardToComplete(util::Map<std::string, const JobCard*
     }
     else
     {
-		std::cout << "Invalid choice.\n";
+		std::cout << "Invalid index.\n";
         return "";
     }
 }
@@ -561,7 +561,7 @@ 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];
@@ -623,10 +623,16 @@ 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 +641,20 @@ 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();

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

@@ -85,14 +85,15 @@ void UserInterface::login()
 {
 	std::string username, password;
 	util::clear();
-	std::cout << "Enter username: ";
+	std::cout << "Login ";
+	std::cout << "\nEnter username: ";
 	util::read(username);
 	std::cout << "Enter password: ";
 	util::read(password);
 	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();
 	}
 }