#include "dclient/render_glyph.h"

#include <ncurses/color.hh>
#include <ncurses/pen.hh>

#include "adt/array_size.h"

#include <cassert>
#include <utility>

static std::pair<short, attr_t> foreground[] = {
  { COLOR_WHITE,      WA_NORMAL  }, // reset
  { COLOR_WHITE,      WA_NORMAL  }, // black      =>  0,
  { COLOR_WHITE,      WA_BOLD    }, // white      =>  1,
  { COLOR_BLUE,       WA_NORMAL  }, // navy       =>  2,
  { COLOR_RED,        WA_NORMAL  }, // red        =>  3,
  { COLOR_RED,        WA_BOLD    }, // orange     =>  4,
  { COLOR_BLUE,       WA_BOLD    }, // blue       =>  5,
  { COLOR_RED,        WA_NORMAL  }, // darkorange =>  6,
  { COLOR_GREEN,      WA_NORMAL  }, // green      =>  7,
  { COLOR_GREEN,      WA_BOLD    }, // lightgreen =>  8,
  { COLOR_BLACK,      WA_BOLD    }, // grey       =>  9,
  { COLOR_YELLOW,     WA_NORMAL  }, // brown      => 10,
  { COLOR_YELLOW,     WA_BOLD    }, // gold       => 11,
  { COLOR_CYAN,       WA_NORMAL  }, // tan        => 12,
  { COLOR_WHITE,      WA_NORMAL  }, // none       => 13,
};

static std::pair<short, attr_t> background[] = {
  { COLOR_BLACK,      WA_NORMAL  }, // reset
  { COLOR_BLACK,      WA_NORMAL  }, // black      =>  0,
  { COLOR_WHITE,      WA_BOLD    }, // white      =>  1,
  { COLOR_BLUE,       WA_NORMAL  }, // navy       =>  2,
  { COLOR_RED,        WA_NORMAL  }, // red        =>  3,
  { COLOR_RED,        WA_BOLD    }, // orange     =>  4,
  { COLOR_BLUE,       WA_BOLD    }, // blue       =>  5,
  { COLOR_RED,        WA_NORMAL  }, // darkorange =>  6,
  { COLOR_GREEN,      WA_NORMAL  }, // green      =>  7,
  { COLOR_GREEN,      WA_BOLD    }, // lightgreen =>  8,
  { COLOR_BLACK,      WA_BOLD    }, // grey       =>  9,
  { COLOR_YELLOW,     WA_NORMAL  }, // brown      => 10,
  { COLOR_YELLOW,     WA_BOLD    }, // gold       => 11,
  { COLOR_CYAN,       WA_NORMAL  }, // tan        => 12,
  { COLOR_BLACK,      WA_NORMAL  }, // none       => 13,
};

static ncurses::color
color (int fg, int bg)
{
  assert (fg + 1 < int (array_size (foreground)));
  assert (bg + 1 < int (array_size (background)));
  auto const &fgpair = foreground[fg + 1];
  auto const &bgpair = background[bg + 1];
  return {
    fgpair.first,
    bgpair.first,
    fgpair.second | bgpair.second,
  };
}

void
write (ncurses::pen &pen, data::glyph const &glyph, u16 darkness)
{
  pen.set_color (darkness < 50 ? color (9, 0) : color (glyph.fg, glyph.bg));
  pen.write (glyph.text);
  pen.set_color (color (-1, -1)); // reset
}