AuthService.hpp

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/*
** EPITECH PROJECT, 2025
** Created by hugo on 06/12/2025
** File description:
** AuthService.hpp
*/
 
#pragma once
 
#include <memory>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include "common/Security/IPasswordHasher.hpp"
#include "server/Sessions/Auth/IAuthService.hpp"
 
namespace server {
 
    struct AccountData {
        std::string username;
        std::string passwordHash;     // Argon2id hash
        uint64_t createdAt;           // timestamp
        uint64_t lastLogin;           // timestamp
        bool autoMatchmaking{false};  // Auto-matchmaking preference
    };
 
    class AuthService : public IAuthService {
       public:
        AuthService();
        explicit AuthService(const std::string &accountsFile);
        ~AuthService() override;
 
        bool authenticate(const std::string &username, const std::string &password) override;
 
        std::string generateToken(const std::string &username);
 
        bool validateToken(const std::string &token);
 
        void revokeToken(const std::string &token);
 
        bool isUserAuthenticated(const std::string &username) const;
 
        bool registerUser(const std::string &username, const std::string &password);
 
        bool updateAutoMatchmaking(const std::string &username, bool enabled);
 
        bool getAutoMatchmaking(const std::string &username) const;
 
        void loadAccounts();
 
        void saveAccounts();
 
       private:
        std::string _accountsFile = "accounts.json";                 
        std::unique_ptr<IPasswordHasher> _passwordHasher;            
        std::unordered_set<std::string> _authenticatedUsers;         
        std::unordered_map<std::string, std::string> _activeTokens;  
        std::unordered_map<std::string, AccountData> _accounts;      
 
        bool _accountsDirty = false;                           
        uint64_t _lastSaveTime = 0;                            
        static constexpr uint64_t SAVE_INTERVAL_SECONDS = 60;  
    };
 
}  // namespace server