#pragma once

#include "IGameServer.h"
#include <stdexcept>

namespace FRG {

// Keeps references held by UI and runtime objects stable while campaigns switch
// between the local and remote implementations.
class GameServerRouter final : public IGameServer {
public:
	explicit GameServerRouter(IGameServer& initial)
		: active_(&initial)
	{
	}

	void use(IGameServer& server) { active_ = &server; }
	std::shared_ptr<const GameSnapshot> snapshot() const override {
		return active_->snapshot();
	}
	const std::string& localPlayerId() const override {
		return active_->localPlayerId();
	}
	void submit(const GameCommand& command) override { active_->submit(command); }
	std::vector<GameServerEvent> drainEvents() override {
		return active_->drainEvents();
	}
	void update(std::int64_t deltaMs) override { active_->update(deltaMs); }
	void save(nlohmann::json& out) const override { active_->save(out); }
	void load(const nlohmann::json& in) override { active_->load(in); }

private:
	IGameServer* active_;
};

} // namespace FRG