#pragma once
#include <ft2build.h>
#include FT_FREETYPE_H

#include "gl_2d.h"
#include "../util/thread.h"

extern THREAD_MUTEX font_mutex;

typedef struct {
  F32 offset_x;
  F32 offset_y;
  U32 width;
  U32 height;
  F32 advance_x;
  F32 advance_y;
  U32 bearing;
} FONT_GLYPH;

const I32 GL_FONT_MAX_GLYPHS = 256;
typedef struct GL_FONT {
  FT_Face face;
  I32  size;

  U32* bitmap;
  U32 bitmap_width;
  U32 bitmap_height;
  U32 char_width;
  U32 char_height;

  GL_TEX2D* atlas;
  const char* name;

  FONT_GLYPH glyphs[GL_FONT_MAX_GLYPHS];
} *PGL_FONT;

GL_FONT* gl_font_create( GL_DATA* gl, const char* path, I32 size );
void gl_font_destroy( GL_DATA* gl, GL_FONT* font );

void gl_font_draw( GL_FONT* font, GL_SHADER_PROGRAM* shader, VEC2 pos, const char* text, CLR color, F32 scale = 1.0f );
void gl_font_draw( GL_FONT* font, GL_BATCH2D* batch, VEC2 pos, const char* text, CLR color, F32 scale = 1.0f );
void gl_font_textured(
  GL_FONT* font,
  GL_SHADER_PROGRAM* shader,
  VEC2 pos,
  const char* text,
  GL_TEX2D* tex,
  CLR color = (CLR){1.f, 1.f, 1.f, 1.f},
  F32 scale = 1.0f
);

VEC2 gl_font_dim( GL_FONT* font, const char* text, F32 scale = 1.0f );
void gl_font_fit_into_box( GL_FONT* font, const char* source, char* out, F32 box_width, F32 box_height, F32 scale );