#pragma once

#ifdef __linux__
#include "../Minecraft.Client/Platform/Linux/Stubs/LinuxStubs.h"
#endif

#include <cstdint>

class ImageFileBuffer 
{
public:
	enum EImageType
	{
		e_typePNG,
		e_typeJPG
	};

	EImageType m_type;
	void*	m_pBuffer;
	int		m_bufferSize;

	int GetType()			{ return m_type; }
	void *GetBufferPointer()	{ return m_pBuffer; }
	int GetBufferSize()			{ return m_bufferSize; }
	void Release()				{ free(m_pBuffer); m_pBuffer = NULL; }
	bool Allocated() { return m_pBuffer != NULL; }
};

typedef struct
{
	int Width;
	int Height;
}D3DXIMAGE_INFO;

typedef struct _XSOCIAL_PREVIEWIMAGE {
    BYTE *pBytes;
    DWORD Pitch;
    DWORD Width;
    DWORD Height;
//    D3DFORMAT Format;
} XSOCIAL_PREVIEWIMAGE, *PXSOCIAL_PREVIEWIMAGE;

class C4JRender
{
public:
	void Tick();
	void UpdateGamma(unsigned short usGamma);

	// Matrix stack
	void MatrixMode(int type);
	void MatrixSetIdentity();
	void MatrixTranslate(float x,float y,float z);
	void MatrixRotate(float angle, float x, float y, float z);
	void MatrixScale(float x, float y, float z);
	void MatrixPerspective(float fovy, float aspect, float zNear, float zFar);
	void MatrixOrthogonal(float left,float right,float bottom,float top,float zNear,float zFar);
	void MatrixPop();
	void MatrixPush();
	void MatrixMult(float *mat);
	const float *MatrixGet(int type);
	void Set_matrixDirty();

	// Core
	void Initialise();
	void InitialiseContext();
	// Call before Initialise() to override window size and/or fullscreen mode.
	// If not called, the primary monitor's native resolution is used.
	void SetWindowSize(int w, int h);
	void SetFullscreen(bool fs);
	void StartFrame();
	void DoScreenGrabOnNextPresent();
	void Present();
	void Clear(int flags);
	void SetClearColour(const float colourRGBA[4]);
	bool IsWidescreen();
	bool IsHiDef();
	void GetFramebufferSize(int &width, int &height);
	void CaptureThumbnail(ImageFileBuffer *pngOut);
	void CaptureScreen(ImageFileBuffer *jpgOut, XSOCIAL_PREVIEWIMAGE *previewOut);
	void BeginConditionalSurvey(int identifier);
	void EndConditionalSurvey();
	void BeginConditionalRendering(int identifier);
	void EndConditionalRendering();

	// Vertex data handling
	typedef enum
	{
		VERTEX_TYPE_PF3_TF2_CB4_NB4_XW1,		// Position 3 x float, texture 2 x float, colour 4 x byte, normal 4 x byte, padding 1 DWORD
		VERTEX_TYPE_COMPRESSED,					// Compressed format - see comment at top of VS_PS3_TS2_CS1.hlsl for description of layout
		VERTEX_TYPE_PF3_TF2_CB4_NB4_XW1_LIT,	// as VERTEX_TYPE_PF3_TF2_CB4_NB4_XW1 with lighting applied,
		VERTEX_TYPE_PF3_TF2_CB4_NB4_XW1_TEXGEN, // as VERTEX_TYPE_PF3_TF2_CB4_NB4_XW1 with tex gen
		VERTEX_TYPE_COUNT
	} eVertexType;

	// Pixel shader
	typedef enum
	{
		PIXEL_SHADER_TYPE_STANDARD,
		PIXEL_SHADER_TYPE_PROJECTION,
		PIXEL_SHADER_TYPE_FORCELOD,
		PIXEL_SHADER_COUNT
	} ePixelShaderType;

	typedef enum
	{
		VIEWPORT_TYPE_FULLSCREEN,
		VIEWPORT_TYPE_SPLIT_TOP,
		VIEWPORT_TYPE_SPLIT_BOTTOM,
		VIEWPORT_TYPE_SPLIT_LEFT,
		VIEWPORT_TYPE_SPLIT_RIGHT,
		VIEWPORT_TYPE_QUADRANT_TOP_LEFT,
		VIEWPORT_TYPE_QUADRANT_TOP_RIGHT,
		VIEWPORT_TYPE_QUADRANT_BOTTOM_LEFT,
		VIEWPORT_TYPE_QUADRANT_BOTTOM_RIGHT,
	} eViewportType;

	typedef enum
	{
		PRIMITIVE_TYPE_TRIANGLE_LIST,
		PRIMITIVE_TYPE_TRIANGLE_STRIP,
		PRIMITIVE_TYPE_TRIANGLE_FAN,
		PRIMITIVE_TYPE_QUAD_LIST,
		PRIMITIVE_TYPE_LINE_LIST,
		PRIMITIVE_TYPE_LINE_STRIP,
		PRIMITIVE_TYPE_COUNT
	} ePrimitiveType;

	void DrawVertices(ePrimitiveType PrimitiveType, int count, void *dataIn, eVertexType vType, C4JRender::ePixelShaderType psType);

	// Command buffers
	void CBuffLockStaticCreations();
	int  CBuffCreate(int count);
	void CBuffDelete(int first, int count);
	void CBuffStart(int index, bool full = false);
	void CBuffClear(int index);
	int	 CBuffSize(int index);
	void CBuffEnd();
	bool CBuffCall(int index, bool full = true);
	void CBuffTick();
	void CBuffDeferredModeStart();
	void CBuffDeferredModeEnd();

	typedef enum
	{
		TEXTURE_FORMAT_RxGyBzAw,		// Normal 32-bit RGBA texture, 8 bits per component
		/* Don't think these are all directly available on D3D 11 - leaving for now
		TEXTURE_FORMAT_R0G0B0Ax,		// One 8-bit component mapped to alpha channel, R=G=B=0
		TEXTURE_FORMAT_R1G1B1Ax,		// One 8-bit component mapped to alpha channel, R=G=B=1
		TEXTURE_FORMAT_RxGxBxAx,		// One 8-bit component mapped to all channels
		*/
		MAX_TEXTURE_FORMATS
	} eTextureFormat;

	// Textures
	int TextureCreate();
	void TextureFree(int idx);
	void TextureBind(int idx);
	void TextureBindVertex(int idx);
	void TextureSetTextureLevels(int levels);
	int  TextureGetTextureLevels();
	void TextureData(int width, int height, void *data, int level, eTextureFormat format = TEXTURE_FORMAT_RxGyBzAw);
	void TextureDataUpdate(int xoffset, int yoffset, int width, int height, void *data, int level);
	void TextureSetParam(int param, int value);
	void TextureDynamicUpdateStart();
	void TextureDynamicUpdateEnd();
	HRESULT LoadTextureData(const char *szFilename,D3DXIMAGE_INFO *pSrcInfo, int **ppDataOut);
	HRESULT LoadTextureData(BYTE *pbData, DWORD dwBytes,D3DXIMAGE_INFO *pSrcInfo, int **ppDataOut);
	HRESULT SaveTextureData(const char *szFilename, D3DXIMAGE_INFO *pSrcInfo, int *ppDataOut);
	HRESULT SaveTextureDataToMemory(void *pOutput, int outputCapacity, int *outputLength, int width, int height, int *ppDataIn);
	void TextureGetStats();
	void  *TextureGetTexture(int idx);

	// State control
	void StateSetColour(float r, float g, float b, float a);
	void StateSetDepthMask(bool enable);
	void StateSetBlendEnable(bool enable);
	void StateSetBlendFunc(int src, int dst);
	void StateSetBlendFactor(unsigned int colour);
	void StateSetAlphaFunc(int func, float param);
	void StateSetDepthFunc(int func);
	void StateSetFaceCull(bool enable);
	void StateSetFaceCullCW(bool enable);
	void StateSetLineWidth(float width);
	void StateSetWriteEnable(bool red, bool green, bool blue, bool alpha);
	void StateSetDepthTestEnable(bool enable);
	void StateSetAlphaTestEnable(bool enable);
	void StateSetDepthSlopeAndBias(float slope, float bias);
	void StateSetFogEnable(bool enable);
	void StateSetFogMode(int mode);
	void StateSetFogNearDistance(float dist);
	void StateSetFogFarDistance(float dist);
	void StateSetFogDensity(float density);
	void StateSetFogColour(float red, float green, float blue);
	void StateSetLightingEnable(bool enable);
	void StateSetVertexTextureUV( float u, float v);
	void StateSetLightColour(int light, float red, float green, float blue);
	void StateSetLightAmbientColour(float red, float green, float blue);
	void StateSetLightDirection(int light, float x, float y, float z);
	void StateSetLightEnable(int light, bool enable);
	void StateSetViewport(eViewportType viewportType);
	void StateSetEnableViewportClipPlanes(bool enable);
	void StateSetTexGenCol(int col, float x, float y, float z, float w, bool eyeSpace);
	void StateSetStencil(int Function, uint8_t stencil_ref, uint8_t stencil_func_mask, uint8_t stencil_write_mask);
	void StateSetForceLOD(int LOD);

	// Event tracking
	void BeginEvent(LPCWSTR eventName);
	void EndEvent();

	// PLM event handling
	void Suspend();
	bool Suspended();
	void Resume();

	// Linux window management
	bool ShouldClose();
	void Shutdown();
};


const int GL_MODELVIEW_MATRIX = 0x0BA6;
const int GL_PROJECTION_MATRIX = 0x0BA7;
const int GL_MODELVIEW = 0x1700;
const int GL_PROJECTION = 0x1701;
const int GL_TEXTURE = 0x1702;

// These things required for tex gen

const int GL_S = 0x2000;
const int GL_T = 0x2001;
const int GL_R = 0x2002;
const int GL_Q = 0x2003;

const int GL_TEXTURE_GEN_S = 0x0C60;
const int GL_TEXTURE_GEN_T = 0x0C61;
const int GL_TEXTURE_GEN_Q = 0x0C63;
const int GL_TEXTURE_GEN_R = 0x0C62;

const int GL_TEXTURE_GEN_MODE = 0x2500;
const int GL_OBJECT_LINEAR = 0x2401;
const int GL_EYE_LINEAR = 0x2400;
const int GL_OBJECT_PLANE = 0x2501;
const int GL_EYE_PLANE = 0x2502;


// These things are used by glEnable/glDisable so must be different and non-zero (zero is used by things we haven't assigned yet)
const int GL_TEXTURE_2D = 0x0DE1;
const int GL_BLEND = 0x0BE2;
const int GL_CULL_FACE = 0x0B44;
const int GL_ALPHA_TEST = 0x0BC0;
const int GL_DEPTH_TEST = 0x0B71;
const int GL_FOG = 0x0B60;
const int GL_LIGHTING = 0x0B50;
const int GL_LIGHT0 = 0x4000;
const int GL_LIGHT1 = 0x4001;

const int CLEAR_DEPTH_FLAG = 0x00000100;
const int CLEAR_COLOUR_FLAG = 0x00004000;

const int GL_DEPTH_BUFFER_BIT = CLEAR_DEPTH_FLAG;
const int GL_COLOR_BUFFER_BIT = CLEAR_COLOUR_FLAG;

const int GL_SRC_ALPHA = 0x0302;
const int GL_ONE_MINUS_SRC_ALPHA = 0x0303;
const int GL_ONE = 1;
const int GL_ZERO = 0;
const int GL_DST_ALPHA = 0x0304;
const int GL_SRC_COLOR = 0x0300;
const int GL_DST_COLOR = 0x0306;
const int GL_ONE_MINUS_DST_COLOR = 0x0307;
const int GL_ONE_MINUS_SRC_COLOR = 0x0301;
const int GL_CONSTANT_ALPHA = 0x8003;
const int GL_ONE_MINUS_CONSTANT_ALPHA = 0x8004;

const int GL_GREATER = 0x0204;
const int GL_EQUAL = 0x0202;
const int GL_LEQUAL = 0x0203;
const int GL_GEQUAL = 0x0206;
const int GL_ALWAYS = 0x0207;

const int GL_TEXTURE_MIN_FILTER = 0x2801;
const int GL_TEXTURE_MAG_FILTER = 0x2800;
const int GL_TEXTURE_WRAP_S = 0x2802;
const int GL_TEXTURE_WRAP_T = 0x2803;

const int GL_NEAREST = 0x2600;
const int GL_LINEAR = 0x2601;
const int GL_EXP = 0x0800;
const int GL_NEAREST_MIPMAP_LINEAR = 0x2702;	// TODO - mipmapping bit of this

const int GL_CLAMP = 0x2900;
const int GL_REPEAT = 0x2901;

const int GL_FOG_START = 0x0B63;
const int GL_FOG_END = 0x0B64;
const int GL_FOG_MODE = 0x0B65;
const int GL_FOG_DENSITY = 0x0B62;
const int GL_FOG_COLOR = 0x0B66;

const int GL_POSITION = 0x1203;
const int GL_AMBIENT = 0x1200;
const int GL_DIFFUSE = 0x1201;
const int GL_SPECULAR = 0x1202;

const int GL_LIGHT_MODEL_AMBIENT = 0x0B53;

const int GL_LINES = 0x0001;
const int GL_LINE_STRIP = 0x0003;
const int GL_QUADS = 0x0007;
const int GL_TRIANGLE_FAN = 0x0006;
const int GL_TRIANGLE_STRIP = 0x0005;

// Singleton
extern C4JRender RenderManager;