#pragma once

#include "stdafx.h"
#include "Core/Shared/Interfaces/IRenderingDevice.h"
#include "Core/Shared/Interfaces/IMessageManager.h"
#include "Utilities/FolderUtilities.h"
#include "Utilities/SimpleLock.h"
#include "Utilities/Timer.h"
#include "Core/Shared/Video/BaseRenderer.h"

using namespace DirectX;

class Emulator;

namespace DirectX {
	class SpriteBatch;
}

class Renderer : public BaseRenderer, public IRenderingDevice
{
private:
	HWND                    _hWnd = nullptr;

	ID3D11Device*           _pd3dDevice = nullptr;
	ID3D11DeviceContext*    _pDeviceContext = nullptr;
	IDXGISwapChain*         _pSwapChain = nullptr;
	ID3D11RenderTargetView* _pRenderTargetView = nullptr;

	atomic<bool>				_needFlip = false;
	uint8_t*						_textureBuffer[2] = { nullptr, nullptr };
	ID3D11Texture2D*			_pTexture = nullptr;
	ID3D11ShaderResourceView*	_pTextureSrv = nullptr;

	ID3D11Texture2D* _pHudTexture = nullptr;
	ID3D11ShaderResourceView* _pHudTextureSrv = nullptr;
	uint32_t _hudWidth = 0;
	uint32_t _hudHeight = 0;

	bool							_frameChanged = true;
	SimpleLock					_frameLock;
	SimpleLock					_textureLock;

	unique_ptr<SpriteBatch> _spriteBatch;

	const uint32_t _bytesPerPixel = 4;
	uint32_t _screenBufferSize = 0;

	bool _newFullscreen = false;
	bool _fullscreen = false;

	uint32_t _realScreenHeight = 240;
	uint32_t _realScreenWidth = 256;
	uint32_t _leftMargin = 0;
	uint32_t _topMargin = 0;
	uint32_t _monitorWidth = 0;
	uint32_t _monitorHeight = 0;

	uint32_t _emuFrameHeight = 0;
	uint32_t _emuFrameWidth = 0;

	HRESULT InitDevice();
	void CleanupDevice();

	void SetScreenSize(uint32_t width, uint32_t height);

	ID3D11Texture2D* CreateTexture(uint32_t width, uint32_t height);
	ID3D11ShaderResourceView* GetShaderResourceView(ID3D11Texture2D* texture);
	void DrawScreen();

	bool CreateHudTexture(uint32_t width, uint32_t height);
	void DrawHud(uint32_t* hudBuffer, uint32_t width, uint32_t height);
		
	HRESULT CreateRenderTargetView();
	void ReleaseRenderTargetView();
	HRESULT CreateEmuTextureBuffers();
	void ResetNesBuffers();

public:
	Renderer(Emulator* emu, HWND hWnd, bool registerAsMessageManager);
	~Renderer();

	void SetFullscreenMode(bool fullscreen, void* windowHandle, uint32_t monitorWidth, uint32_t monitorHeight);

	void Reset();
	void Render(uint32_t* hudBuffer, uint32_t hudWidth, uint32_t hudHeight);

	void UpdateFrame(RenderedFrame& frame);
};