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Training-VehicleService-May26/Trenser.VehicleServiceSystem/Trenser.VehicleServiceSystem/services/UserManagementService.cpp
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/*
File: UserManagementService.cpp
Description: Implementation file containing the method definitions of the
UserManagementService class, including user retrieval and removal logic.
Author: Trenser
Date:19-May-2026
*/
#include <stdexcept>
#include "Config.h"
#include "Enums.h"
#include "Factory.h"
#include "FileManager.h"
#include "InventoryManagementService.h"
#include "Invoice.h"
#include "PaymentManagementService.h"
#include "ServiceManagementService.h"
#include "User.h"
#include "UserManagementService.h"
#include "Utility.h"
#include "Vector.h"
void UserManagementService::ensureAdminExists()
{
auto& usersMap = m_dataStore.getUsers();
int usersMapSize = usersMap.getSize();
bool isAdminFound = false;
for (int index = 0; index < usersMapSize; index++)
{
User* user = usersMap.getValueAt(index);
if (user && user->getUserType() == util::UserType::ADMIN)
{
isAdminFound = true;
break;
}
}
if (!isAdminFound)
{
createUser(
config::admin::DEFAULT_ADMIN_USERNAME,
config::admin::DEFAULT_ADMIN_NAME,
config::admin::DEFAULT_ADMIN_PASSWORD,
config::admin::DEFAULT_ADMIN_EMAIL,
config::admin::DEFAULT_ADMIN_PHONE,
util::UserType::ADMIN);
}
}
void UserManagementService::createUser(const std::string& username, const std::string& name, const std::string& password, const std::string& email, const std::string& phone, util::UserType type)
{
InventoryManagementService inventoryManagementService;
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)
{
throw std::runtime_error("Username already exists");
}
User* newUser = Factory::getObject<User>(username, password, name, phone, email, type);
usersMap.insert(newUser->getId(), newUser);
paymentManagementService.attach(newUser);
serviceManagementService.attach(newUser);
if (newUser->getUserType() == util::UserType::ADMIN)
{
inventoryManagementService.attach(newUser);
}
}
void UserManagementService::updateUserDetails(const std::string& userID, const std::string& email, const std::string& phone)
{
auto& usersMap = m_dataStore.getUsers();
int index = usersMap.find(userID);
if (index == -1)
{
throw std::runtime_error("User does not exist!");
}
User* user = usersMap.getValueAt(index);
user->setEmail(email);
user->setPhone(phone);
}
/*
Function: getUsers
Description: Retrieves all users stored in the DataStore.
Parameter: None
Return type: util::Map<std::string, User*>
*/
util::Map<std::string, User*> UserManagementService::getUsers()
{
return m_dataStore.getUsers();
}
util::Map<std::string, User*> UserManagementService::getUsers(util::UserType type)
{
util::Map<std::string, User*>& currentUsers = m_dataStore.getUsers();
util::Map<std::string, User*> filteredUsersMap;
for (int iterator = 0; iterator < currentUsers.getSize(); iterator++)
{
User* currentUser = currentUsers.getValueAt(iterator);
if (currentUser->getUserType() == type)
{
filteredUsersMap.insert(currentUser->getId(), currentUser);
}
}
return filteredUsersMap;
}
/*
Function: getUser
Description: Retrieves a specific user by ID from the DataStore.
Parameter: const std::string& userID - ID of the user
Return type: User*
*/
User* UserManagementService::getUser(const std::string& userID)
{
int index = m_dataStore.getUsers().find(userID);
if (index != -1)
{
return m_dataStore.getUsers().getValueAt(index);
}
return nullptr;
}
/*
Function: removeUser
Description: Marks a user as inactive in the DataStore instead of deleting them.
Parameter: const std::string& userID - ID of the user to remove
Return type: void
*/
void UserManagementService::removeUser(const std::string& userID)
{
int index = m_dataStore.getUsers().find(userID);
if (index != -1)
{
User* user = m_dataStore.getUsers().getValueAt(index);
if (user != nullptr)
{
user->setState(util::State::INACTIVE);
}
}
}
/*
Function: getUserNotifications
Description: Retrieves all notifications associated with a given user ID.
Parameters:
- userID: The unique ID of the user whose notifications are to be retrieved.
Returns:
- util::Vector<Notification*> containing all notifications for the user.
Throws:
- std::runtime_error if no user is found with the given UserID or if the User object is invalid.
*/
util::Vector<Notification*> UserManagementService::getUserNotifications(const std::string& userID)
{
auto& usersMap = m_dataStore.getUsers();
if (usersMap.find(userID) == -1)
{
throw std::runtime_error("No user found with given UserID");
}
User* user = usersMap[userID];
if (user)
{
auto& notifications = user->getNotifications();
int numberOfNotifications = notifications.getSize();
util::Vector<Notification*> notificationsVector;
for (int index = 0; index < numberOfNotifications; index++)
{
notificationsVector.push_back(notifications.getValueAt(index));
}
return notificationsVector;
}
else
{
throw std::runtime_error("Invalid User object");
}
}
/*
Function: deleteNotification
Description: Deletes a specific notification associated with a given user ID.
Parameters:
- notificationID: The unique ID of the notification to be deleted.
- userID: The unique ID of the user whose notification is to be deleted.
Returns:
- void
Throws:
- std::runtime_error if no user is found with the given UserID or if no notification is found with the given NotificationID.
*/
void UserManagementService::deleteNotification(const std::string& notificationID, const std::string& userID)
{
auto& usersMap = m_dataStore.getUsers();
if (usersMap.find(userID) == -1)
{
throw std::runtime_error("No user found with given UserID");
}
User* user = usersMap[userID];
auto& notifications = user->getNotifications();
if (notifications.find(notificationID) == -1)
{
throw std::runtime_error("No notification found with given NotificationID");
}
notifications.remove(notificationID);
}
void UserManagementService::loadUsers()
{
util::FileManager<User> userFileManager(config::file::USER_FILE);
util::FileManager<Notification> notificationFileManager(config::file::NOTIFICATION_FILE);
auto& users = m_dataStore.getUsers();
auto usersMap = userFileManager.load();
auto notificationsMap = notificationFileManager.load();
int numberOfUsers = usersMap.getSize();
int numberOfNotifications = notificationsMap.getSize();
for (int index = 0; index < numberOfUsers; index++)
{
users[usersMap.getKeyAt(index)] = usersMap.getValueAt(index);
}
for (int index = 0; index < numberOfNotifications; index++)
{
Notification* notification = notificationsMap.getValueAt(index);
const std::string& recipientUserId = notification->getRecipientUserId();
int userIndex = users.find(recipientUserId);
if (userIndex == -1)
{
throw std::runtime_error("Invalid recipient user ID");
}
User* user = users.getValueAt(userIndex);
user->addNotification(notification);
}
}
void UserManagementService::saveUsers()
{
util::FileManager<User> userFileManager(config::file::USER_FILE);
util::FileManager<Notification> notificationFileManager(config::file::NOTIFICATION_FILE);
auto& users = m_dataStore.getUsers();
util::Map<std::string, Notification*> notifications;
for (int userIndex = 0; userIndex < users.getSize(); userIndex++)
{
User* user = users.getValueAt(userIndex);
auto& userNotifications = user->getNotifications();
for (int notificationIndex = 0; notificationIndex < userNotifications.getSize(); notificationIndex++)
{
notifications[userNotifications.getKeyAt(notificationIndex)] =
userNotifications.getValueAt(notificationIndex);
}
}
userFileManager.save(users);
notificationFileManager.save(notifications);
}