#!/usr/bin/env python3
# tmp-75QDpmeAU5.py -- [Pythonista v3.4 (iOS)]

import sys
import ui

SIDE_LENGTH=10
STEP_COUNT=4
COLOR_COMPONENT_LIMIT=256

def gen_colors(start: int, end: int, step: int) -> list[str]:
  def _r() -> range:
    #print(f'{start}  {end} {step}')
    return range(start, end, step)
  rgb=[(r,g,b) for r in _r() for g in _r() for b in _r()]
  rgb24=map(lambda x: (x[0]<<16)+(x[1]<<8)+x[2], rgb)
  rgb24s=list(map(lambda x: str.format('#{0:06x}',x),rgb24))
  return rgb24s
  
def make_img_colors(length: int, count: int, colors: list[str]) -> ui.Image:
  t=length*count*count
  with ui.ImageContext(t,t) as ctx:
    s=''
    for i in range(0,len(colors),1):
      ui.set_color(colors[i])
      ui.fill_rect((i*length)%t,((i*length)//t)*length*count,length,length*count)
      eol="\n" if (i+1)%(count*count)==0 else ""
      s=f'{s} {colors[i]}{eol}'
    img=ctx.get_image()
  print(f"\n\n{s[:-1]}")
  return img
  
def make_img_colors_lower(length: int, count: int) -> ui.Image:
  colors=gen_colors(0,COLOR_COMPONENT_LIMIT,COLOR_COMPONENT_LIMIT//count)
  return make_img_colors(length,count,colors)

def make_img_colors_upper(length: int, count: int) -> ui.Image:
  colors=gen_colors(COLOR_COMPONENT_LIMIT-1,-1,(COLOR_COMPONENT_LIMIT//count)*-1)
  return make_img_colors(length,count,colors)

def main(args: list[str]) -> int:
  img_lower=make_img_colors_lower(SIDE_LENGTH,STEP_COUNT)
  img_lower.show()
  img_upper=make_img_colors_upper(SIDE_LENGTH,STEP_COUNT)
  img_upper.show()
  return 0

if __name__ == "__main__":
  r = main(sys.argv)
  sys.exit(r)