#ifndef __TINYCOLOR_H__
#define __TINYCOLOR_H__

#include <stdint.h>

#ifndef COLOR_WITH_ALPHA
#warning "the color data struct will not contain alpha channel"
#endif

#define COLOR_SPACE_RGB 0
#define COLOR_SPACE_CMY 1
#define COLOR_SPACE_CMYK 2
#define COLOR_SPACE_GRAY 3
#define COLOR_SPACE_HSI 4
#define COLOR_SPACE_HSL 5
#define COLOR_SPACE_HSV 6
#define COLOR_SPACE_HWB 7
#define COLOR_SPACE_Lab 8
#define COLOR_SPACE_LabCH 9
#define COLOR_SPACE_LMS 10
#define COLOR_SPACE_Luv 11
#define COLOR_SPACE_LuvCH 12
#define COLOR_SPACE_TSL 13
#define COLOR_SPACE_XYY 14
#define COLOR_SPACE_XYZ 15
#define COLOR_SPACE_YCgCo 16
#define COLOR_SPACE_YDbDr 17
#define COLOR_SPACE_YIQ 18
#define COLOR_SPACE_YPdPr 19
#define COLOR_SPACE_YUV 20




typedef struct _tinyColor tinyColor;

#define COLOR_CONVERT_(from, to)                                               \
  extern int color_convert_##from##_##to(tinyColor *color);                    \
  extern int color_convert_##to##_##from(tinyColor *color);

COLOR_CONVERT_(RGB, CMYK)
COLOR_CONVERT_(RGB, GRAY)
COLOR_CONVERT_(RGB, HSI)
COLOR_CONVERT_(RGB, HSL)
COLOR_CONVERT_(RGB, HSV)
COLOR_CONVERT_(RGB, HWB)
COLOR_CONVERT_(RGB, Lab)
COLOR_CONVERT_(RGB, LabCH)
COLOR_CONVERT_(RGB, LMS)
COLOR_CONVERT_(RGB, Luv)
COLOR_CONVERT_(RGB, LuvCH)
COLOR_CONVERT_(RGB, TSL)
COLOR_CONVERT_(RGB, XYY)
COLOR_CONVERT_(RGB, XYZ)
COLOR_CONVERT_(RGB, YCgCo)
COLOR_CONVERT_(RGB, YDbDr)
COLOR_CONVERT_(RGB, YIQ)
COLOR_CONVERT_(RGB, YPdPr)
COLOR_CONVERT_(RGB, YUV)


#define COLOR_JOIN(a, b) a##b
#define COLOR_GLUE(a, b) COLOR_JOIN(a, b)
#define COLOR_SUFFIX(a) COLOR_GLUE(a, COLOR_COMPONENT_WIDTH)

#define COLOR_CATEGORY_PACK(n) COLOR_COMPONENT_TYPE n;

#define COLOR_CATEGORY_PACK_3(n1, n2, n3)                                      \
  typedef struct {                                                             \
    COLOR_CATEGORY_PACK(A)                                                     \
    COLOR_CATEGORY_PACK(n1)                                                    \
    COLOR_CATEGORY_PACK(n2)                                                    \
    COLOR_CATEGORY_PACK(n3)                                                    \
  } COLOR_SUFFIX(color##n1##n2##n3##_);                                        \
    extern int COLOR_SUFFIX(color_component##n1##n2##n3##_)(                     \
      tinyColor * color, COLOR_SUFFIX(color##n1##n2##n3##_) * data);           \
  extern tinyColor *COLOR_SUFFIX(color_createFrom##n1##n2##n3##_)(             \
      const COLOR_SUFFIX(color##n1##n2##n3##_) data);

#define COLOR_CATEGORY_PACK_4(n1, n2, n3, n4)                                  \
  typedef struct {                                                             \
    COLOR_CATEGORY_PACK(A)                                                     \
    COLOR_CATEGORY_PACK(n1)                                                    \
    COLOR_CATEGORY_PACK(n2)                                                    \
    COLOR_CATEGORY_PACK(n3)                                                    \
    COLOR_CATEGORY_PACK(n4)                                                    \
  } COLOR_SUFFIX(color##n1##n2##n3##n4_);                                          


#define GEN_COLOR_STRUCT                                                       \
  COLOR_CATEGORY_PACK_3(R, G, B)                                               \
  COLOR_CATEGORY_PACK_3(H, S, L)

  
#define COLOR_COMPONENT_WIDTH 8
#define COLOR_COMPONENT_TYPE int8_t
GEN_COLOR_STRUCT
#undef COLOR_COMPONENT_TYPE
#undef COLOR_COMPONENT_WIDTH

#define COLOR_COMPONENT_WIDTH 16
#define COLOR_COMPONENT_TYPE int16_t
GEN_COLOR_STRUCT
#undef COLOR_COMPONENT_TYPE
#undef COLOR_COMPONENT_WIDTH