#ifndef GRAPHIC_BASIC_H_INCLUDED
#define GRAPHIC_BASIC_H_INCLUDED

#include <string>

#include "microtexexport.h"
#include "utils/types.h"

namespace microtex {

using color = std::uint32_t;

static constexpr color transparent = 0x00000000;
static constexpr color black = 0xff000000;
static constexpr color white = 0xffffffff;
static constexpr color red = 0xffff0000;
static constexpr color green = 0xff00ff00;
static constexpr color blue = 0xff0000ff;
static constexpr color yellow = 0xffffff00;
static constexpr color cyan = 0xff00ffff;
static constexpr color magenta = 0xffff00ff;

static constexpr color MT_TRANSPARENT = transparent;
static constexpr color BLACK = black;
static constexpr color WHITE = white;
static constexpr color RED = red;
static constexpr color GREEN = green;
static constexpr color BLUE = blue;
static constexpr color YELLOW = yellow;
static constexpr color CYAN = cyan;
static constexpr color MAGENTA = magenta;

/** Construct a 32 bit true color with its alpha, red, green and blue channel*/
inline color MICROTEX_EXPORT argb(int a, int r, int g, int b) {
  return (a << 24) | (r << 16) | (g << 8) | b;
}

inline color MICROTEX_EXPORT rgb(int r, int g, int b) {
  return argb(0xff, r, g, b);
}

inline color MICROTEX_EXPORT argb(float a, float r, float g, float b) {
  return argb((int)(a * 255), (int)(r * 255), (int)(g * 255), (int)(b * 255));
}

inline color MICROTEX_EXPORT rgb(float r, float g, float b) {
  return argb(1.f, r, g, b);
}

inline color MICROTEX_EXPORT color_a(color c) {
  return c >> 24;
}

inline color MICROTEX_EXPORT color_r(color c) {
  return c >> 16 & 0x00ff;
}

inline color MICROTEX_EXPORT color_g(color c) {
  return c >> 8 & 0x0000ff;
}

inline color MICROTEX_EXPORT color_b(color c) {
  return c & 0x000000ff;
}

inline color MICROTEX_EXPORT cmyk(float c, float m, float y, float k) {
  float kk = 1.f - k;
  return rgb(kk * (1 - c), kk * (1 - m), kk * (1 - y));
}

/** Test if the given color is transparent */
inline bool MICROTEX_EXPORT isTransparent(color c) {
  return (c >> 24 == 0);
}

/** Convert #AARRGGBB or #RRGGBB formatted string into color. */
color MICROTEX_EXPORT decodeColor(const std::string& s);

/** Get a color from given name, return black if not found. */
color MICROTEX_EXPORT getColor(const std::string& name);

/** Represents a point in 2D plane */
struct MICROTEX_EXPORT Point {
  float x, y;

  Point() : x(0), y(0) {}

  Point(float x1, float y1) : x(x1), y(y1) {}

  bool operator==(const Point& other) const;
};

struct MICROTEX_EXPORT Rect {
  float x, y, w, h;

  Rect() : x(0), y(0), w(0), h(0) {}

  Rect(float x1, float y1, float w1, float h1) : x(x1), y(y1), w(w1), h(h1) {}

  bool operator==(const Rect& other) const;
};

/** Stroke cap type */
enum MICROTEX_EXPORT Cap { CAP_BUTT, CAP_ROUND, CAP_SQUARE };

/** Stroke join type */
enum MICROTEX_EXPORT Join { JOIN_BEVEL, JOIN_MITER, JOIN_ROUND };

struct MICROTEX_EXPORT Stroke {
  float lineWidth;
  Cap cap;
  Join join;
  float miterLimit;

  Stroke() : lineWidth(1.f), cap(CAP_ROUND), join(JOIN_ROUND), miterLimit(0) {}

  Stroke(float w, Cap c, Join j, float ml = 0) : lineWidth(w), cap(c), join(j), miterLimit(ml) {}

  bool operator==(const Stroke& other) const;

  inline void set(float w, Cap c, Join j, float ml = 0) {
    lineWidth = w;
    cap = c;
    join = j;
    miterLimit = ml;
  }
};

}  // namespace microtex

#endif  // GRAPHIC_BASIC_H_INCLUDED