#pragma once

#include "Session.h"
#include <memory>
#include <mutex>
#include <set>
#include <span>

class SessionManager {
public:
  static SessionManager &GetInstance();

  bool TryJoin(std::shared_ptr<Session> session, const std::string &nickname);
  void Leave(std::shared_ptr<Session> session);
  void Broadcast(PacketHeader header, std::span<const uint8_t> body);

private:
  std::mutex mutex_;
  std::set<std::shared_ptr<Session>> sessions_;
};