// Copyright Epic Games, Inc. All Rights Reserved.

#pragma once

#include "CoreMinimal.h"
#include "GameFramework/GameModeBase.h"
#include "enginewrapper.hpp"
#include "engineutil.hpp"
#include "TangibleManager.h"
#include "LuprexSockets.hpp"
#include "IntegrationGameModeBase.generated.h"

/**
 * 
 */
UCLASS()
class INTEGRATION_API AIntegrationGameModeBase : public AGameModeBase, public FRunnable
{
	GENERATED_BODY()
	
public:
	AIntegrationGameModeBase();
	~AIntegrationGameModeBase();
	virtual void BeginPlay() override;
	virtual void Tick(float) override;
	virtual void EndPlay(const EEndPlayReason::Type EndPlayReason);

	// Delete all the state created in BeginPlay.  That
	// includes: the Luprex engine, the thread, and the socket state.
	void ResetToInitialState();

	// Method of FRunnable, called by the Luprex thread.
	virtual uint32 Run() override;

	// Set the entire contents of the console output box.
	UFUNCTION(BlueprintImplementableEvent)
	void ConsoleSetOutput(const FString& text);

	// This is called by the GUI whenever the user hits enter.
	UFUNCTION(BlueprintCallable)
	void ConsoleSendInput(const FString& text);

	// The blueprint class TangibleActor
	UPROPERTY(EditDefaultsOnly, Category = TangibleClasses)
	TSubclassOf<AActor> ClassTangibleActor;

	// Transfer console output from the Luprex engine to unreal.
	void HandleLuprexConsoleOutput();

	//UPROPERTY()
	//FTangibleManager TangibleManager;

	// This stores the entire text currently visible in the console.
	engineutil::ConsoleOutput ConsoleOutput;

	// The worker thread.
	FRunnableThread *Thread;

	// Used to tell the worker thread to stop.
	bool ThreadStopRequested;

	// This event is used to wake up the Luprex thread.  Normally,
	// this means we want the worker to do one processing step.  But
	// if ThreadStopRequested is true, it means we want the thread
	// to exit.
	FEvent* ThreadEvent;

	// This critical section guards the use of the EngineWrapper.
	FCriticalSection LuprexMutex;
	
	// The Luprex wrapper and engine.  MUST CLAIM LuprexMutex.
	EngineWrapper Luprex;

	// Luprex socket system.  Aside from construction, only touched by Luprex thread.
	TUniquePtr<FLpxSockets> Sockets;

	// Amount of elapsed time.
	float EngineSeconds;

	// When do we next trigger the thread event (relative to EngineSeconds).
	float NextThreadTrigger;
};