Jissin Mathew
106 lines
2.6 KiB
C++
106 lines
2.6 KiB
C++
#include <stdexcept>
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#include "InventoryManagementService.h"
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#include "Vector.h"
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#include "Enums.h"
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#include "InventoryItem.h"
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#include "Config.h"
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#include "User.h"
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#include "Factory.h"
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#include "Timestamp.h"
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util::Map<std::string, User*> InventoryManagementService::m_observers{};
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void InventoryManagementService::attach(User* user)
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{
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if (user)
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{
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const std::string& userID = user->getId();
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if (m_observers.find(userID) == -1)
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{
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m_observers[userID] = user;
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}
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}
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}
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void InventoryManagementService::detach(User* user)
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{
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if (user)
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{
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const std::string& userID = user->getId();
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if (m_observers.find(userID) != -1)
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{
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m_observers.remove(userID);
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}
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}
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}
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void InventoryManagementService::sendNotification(User* user, const std::string& title, const std::string& message)
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{
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if (user)
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{
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if (m_observers.find(user->getId()) != -1)
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{
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Notification* notification =
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Factory::getObject<Notification>(
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user->getId(),
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user,
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"InventoryManagementService: " + title,
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message,
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util::Timestamp()
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);
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if (notification)
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{
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user->addNotification(notification);
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}
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else
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{
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throw std::runtime_error("Failed to create notification");
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}
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}
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}
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}
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static void sendLowStockAlertsToAdmins(InventoryManagementService& inventoryManagementService, const InventoryItem* inventoryItem, const util::Vector<User*>& adminUsers)
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{
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int adminUsersSize = adminUsers.getSize();
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for (int index = 0; index < adminUsersSize; index++)
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{
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inventoryManagementService.sendNotification(
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adminUsers[index],
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"Low Stock Alert",
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"The inventory item with ID " + inventoryItem->getId() +
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" has very low quantity in the inventory"
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);
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}
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}
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void InventoryManagementService::sendLowStockAlerts()
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{
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auto& inventoryItems = m_dataStore.getInventoryItems();
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int inventoryItemsSize = inventoryItems.getSize();
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auto& usersMap = m_dataStore.getUsers();
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int usersMapSize = usersMap.getSize();
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util::Vector<User*> adminUsers;
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for (int index = 0; index < usersMapSize; index++)
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{
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User* user = usersMap.getValueAt(index);
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if (user->getUserType() == util::UserType::ADMIN)
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{
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adminUsers.push_back(user);
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}
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}
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int adminUsersSize = adminUsers.getSize();
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if (adminUsersSize < 1)
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{
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throw std::runtime_error("The system has no admins present!");
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}
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for (int index = 0; index <= inventoryItemsSize; index++)
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{
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InventoryItem* inventoryItem = inventoryItems.getValueAt(index);
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if (inventoryItem && inventoryItem->getQuantity() < config::threshold::INVENTORY_LOW_STOCK_THRESHOLD)
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{
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sendLowStockAlertsToAdmins(*this, inventoryItem, adminUsers);
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}
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}
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}
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