///////////////H File ////////////
#pragma once
#include "GameState.h"
#include <future>
#include "GameStateGamePlay.h"

class GameStateLoadGame :public GameState
{
public:
    GameStateLoadGame(Game& game, std::string db, unsigned int userid);
    void Draw(Graphics& gfx)override;
    void Update()override;
private:
    std::shared_ptr<GameStateGamePlay> SetupNextState();
private:
    Surface background;
    std::future<std::shared_ptr<GameStateGamePlay>> next;
};
////////////////////CPP file //////////////
#include "GameStateLoadGame.h"
#include "..\Game.h"

GameStateLoadGame::GameStateLoadGame(Game & game, std::string db, unsigned int userid)
    :
    GameState(game),
    background(Surface::FromFile("..\\data\\textures\\bg.png")),
    //ERROR: no instande of constructors matches argument list , types are std::future<void>
    next(std::async(std::launch::async, [this,db,userid] { SetupNextState(); }))
{
}

void GameStateLoadGame::Draw(Graphics & gfx)
{
    background.Draw(0, 0, gfx);
    //also draw loading bar based on process white fill with yellow
}

void GameStateLoadGame::Update()
{
    if (next.wait_for(std::chrono::milliseconds(0)) == std::future_status::ready)
    {
        // error because currently i am using unique_ptr not shared
        pGame.SetGameState(next.get());
    }
}

std::shared_ptr<GameStateGamePlay> GameStateLoadGame::SetupNextState()
{
    return std::make_shared<GameStateGamePlay>(pGame,db, userid); // error undefined db and userid (doing something stupid)
}