#ifndef GAME_WINDOW_H
#define GAME_WINDOW_H

#include "tier0/platform.h"
#include "tier2/iappsystem.h"
#include "materialsystem/humandevice_enums.h"

typedef void ( *KeyCallbackFn )( EInputDeviceType eDevice, EInputButton eButton, bool bIsPressed );
typedef void ( *AxisCallbackFn )( EInputDeviceType eDevice, EInputAxis eAxis, float fd );

class IImage;
abstract_class IGameWindow: public IAppSystem
{
public:
	virtual void Frame( float fDelta ) = 0;

	virtual uint32_t GetRenderWidth() = 0;
	virtual uint32_t GetRenderHeight() = 0;
	virtual bool BRenderSizeUpdated() = 0;

	virtual void SetOutputImage( IImage *pImage ) = 0;
	virtual IImage *GetOutputImage() = 0;

	virtual void SetKeyCallback( KeyCallbackFn fn ) = 0;
	virtual void SetAxisCallback( AxisCallbackFn fn ) = 0;

	virtual void *CreateVulkanSurface( void *pInstance ) = 0;
	virtual void DestroyVulkanSurface( void *pInstance ) = 0;
};

abstract_class IGameWindowManager: public IAppSystem
{
public:
	virtual void Frame( float fDelta ) = 0;

	virtual IGameWindow *CreateWindow() = 0;
	virtual void DestroyWindow( IGameWindow* pWindow ) = 0;

	virtual int GetVulkanInstanceExtensionCount() = 0;
	virtual const char **GetVulkanInstanceExtensions() = 0;
};

IGameWindowManager *GameWindowManager();
#define GAME_WINDOW_MANAGER_INTERFACE_VERSION "GameWindowMgr001"

#endif