#pragma once

#include <mutex>
#include <td/game/World.h>

namespace td {
namespace sim {

// TODO: OnEnd signal
/**
 * \note This class is thread safe
 */
class ServerSimulation : public protocol::CommandHandler {
  private:
	std::mutex m_Mutex;
	game::World& m_World;
	std::uint64_t m_StepTime;
	std::uint64_t m_CurrentTime;
	std::vector<td::protocol::LockStep> m_History;

	using protocol::CommandHandler::Handle;

  public:
	ServerSimulation(game::World& a_World, std::uint64_t a_StepTime);

	protocol::packets::LockStepsPacket Update();

	protocol::packets::LockStepsPacket MakePacket();

	// no checks are done !

	virtual void Handle(const protocol::commands::SpawnTroopCommand& a_SpawnTroop) override;
	virtual void Handle(const protocol::commands::PlaceTowerCommand& a_PlaceTower) override;

	protocol::packets::LockStepResponsePacket GetResponse(const protocol::packets::LockStepRequestPacket& a_Missing) const;
};

}  // namespace sim
}  // namespace td