// Fill out your copyright notice in the Description page of Project Settings.

#pragma once

#include "Engine/GameInstance.h"
#include "StateManager.generated.h"

//enum of top level states
UENUM(BlueprintType)
enum class EGameState : uint8 {
    ENone           UMETA(DisplayName = "None"),
    EStartup        UMETA(DisplayName = "Startup"),
    ELoginScreen    UMETA(DisplayName = "LoginScreen"),
};
/**
 *
 */
UCLASS()
class GSTUT_API UStateManager : public UGameInstance
{
    GENERATED_BODY()

public:

    //To reference Login menu Class
    UPROPERTY(EditDefaultsOnly, Category = "State Manager")
        TSubclassOf<class UUserWidget> cLoginMenu;

    //Init() works like contructor for Game Instance
    virtual void Init() override;

    //public function for handling state changes
    UFUNCTION(BlueprintCallable, Category = "State Manager")
        void ChangeState(EGameState newState);

    //returns current game state
    EGameState GetGameState();

    /* GameSparks calls */
    void Login(FString username, FString password);
    void Register(FString username, FString password);
    /* End GameSparks */
private:

    //currently displayed widget
    UUserWidget *currentWidget;

    //Current Game State
    EGameState currentState;

    void EnterState(EGameState newState);
    void LeaveState(EGameState oldState);



};