#pragma once
#include <unordered_map>
#include <chrono>
#include <cstdint>

class SessionManager {
public:
    uint64_t createSession(uint64_t userId);
    void removeSession(uint64_t sessionId);
    bool isSessionActive(uint64_t sessionId);

private:
    std::unordered_map<uint64_t, std::chrono::system_clock::time_point> sessions_;
    uint64_t nextSessionId_ = 1;
};