#!/usr/bin/env python  

import sys, os, string, re
import colorsys
from collections import defaultdict

colors = defaultdict(int)

p = re.compile(r'[\#]([a-fA-F\d]{6}|[a-fA-F\d]{3})', re.IGNORECASE)

explicitMap = {
   "157fcc":"dff4e9"
}

def rotateHue(rgb):
   hls = colorsys.rgb_to_hsv(rgb[0]/256.0,rgb[1]/256.0,rgb[2]/256.0)
   newHLS = (hls[0]-120.0/360,hls[1],hls[2])#blue to green

   newRGB = colorsys.hsv_to_rgb(*newHLS)
   #print hls,newHLS,newRGB
   newRGB256 = tuple([ int(v*256.0+0.5) for v in newRGB])
   return newRGB256

def toGrayscale(rgb):
   yiq = colorsys.rgb_to_yiq(rgb[0]/256.0,rgb[1]/256.0,rgb[2]/256.0)
   newYIQ = (yiq[0],0,0)

   newRGB = colorsys.yiq_to_rgb(*newYIQ)
   #print hls,newHLS,newRGB
   newRGB256 = tuple([ int(v*256.0+0.5) for v in newRGB])
   return newRGB256


def getNewColor(color):
   if(len(color) == 3):
      return color
   rgb = tuple(int(color[i:i+2], 16) for i in (0, 2 ,4))
   isGray = len(set(rgb)) == 1
   if isGray:
      return color

   #if color in explicitMap:
   #   return explicitMap[color]

   if(max(rgb) != rgb[0]):
      newRGB256 = toGrayscale(rgb)
      return '%02x%02x%02x' % (newRGB256[0],newRGB256[1],newRGB256[2])
   else:
      return color

mappedSkin = open("skin_styles.css","w")
with open(sys.argv[1]) as f: 
   for line in f:
      m = p.findall(line)
      for color in m:
         colors[color.lower()] += 1
         line = line.replace(color,getNewColor(color))         
      mappedSkin.write(line)

#print len(colors),"colors"

print ".mycolors {\n"
nonGray = set()
for color,count in sorted(colors.items(), key=lambda x: -x[1]):
   if(len(color) == 3):
      #these are all shades of gray
      continue
   
   rgb = tuple(int(color[i:i+2], 16) for i in (0, 2 ,4))
   isGray = len(set(rgb)) == 1
   if isGray: continue

   nonGray.add(color)
   r,g,b = color[0:2],color[2:4],color[4:6]
   
   newColor = getNewColor(color)
   comment = ""
   if(color == newColor):
      continue

   print "   color: #"+color+";",
   print "color: #"+newColor+"; /* %s */"%comment

print "}\n"
#print "Non gray: ",len(nonGray)