#ifndef CARD_DATABASE_ACCESSOR_H #define CARD_DATABASE_ACCESSOR_H #pragma once #include "card_database.h" class CardDatabaseManager { public: // Delete copy constructor and assignment operator to enforce singleton CardDatabaseManager(const CardDatabaseManager &) = delete; CardDatabaseManager &operator=(const CardDatabaseManager &) = delete; // Static method to access the singleton instance static CardDatabase *getInstance(); private: CardDatabaseManager() = default; // Private constructor ~CardDatabaseManager() = default; }; #endif // CARD_DATABASE_ACCESSOR_H