from __future__ import print_function

import os

from os import path

import subprocess

OUTPUT_DIR = '/tmp/placeholder_emoji'

def generate_image(name, text):

  print(name, text.replace('\n', '_'))

  subprocess.check_call(

      ['convert', '-size', '100x100', 'label:%s' % text,

       '%s/%s' % (OUTPUT_DIR, name)])

def is_color_patch(cp):

  return cp >= 0x1f3fb and cp <= 0x1f3ff

def has_color_patch(values):

  for v in values:

    if is_color_patch(v):

      return True

  return False

def regional_to_ascii(cp):

  return unichr(ord('A') + cp - 0x1f1e6)

def is_flag_sequence(values):

  if len(values) != 2:

    return False

  for v in values:

    v -= 0x1f1e6

    if v < 0 or v > 25:

      return False

  return True

def is_keycap_sequence(values):

  return len(values) == 2 and values[1] == 0x20e3

def get_keycap_text(values):

  return '-%c-' % unichr(values[0]) # convert gags on '['

char_map = {

    0x1f468: 'M',

    0x1f469: 'W',

    0x1f466: 'B',

    0x1f467: 'G',

    0x2764: 'H', # heavy black heart, no var sel

    0x1f48b: 'K', # kiss mark

    0x200D: '-', # zwj placeholder

    0xfe0f: '-', # variation selector placeholder

    0x1f441: 'I', # Eye

    0x1f5e8: 'W', # 'witness' (left speech bubble)

}

def get_combining_text(values):

  chars = []

  for v in values:

    char = char_map.get(v, None)

    if not char:

      return None

    if char != '-':

      chars.append(char)

  return ''.join(chars)

if not path.isdir(OUTPUT_DIR):

  os.makedirs(OUTPUT_DIR)

with open('sequences.txt', 'r') as f:

  for seq in f:

    seq = seq.strip()

    text = None

    values = [int(code, 16) for code in seq.split('_')]

    if len(values) == 1:

      val = values[0]

      text = '%04X' % val # ensure upper case format

    elif is_flag_sequence(values):

      text = ''.join(regional_to_ascii(cp) for cp in values)

    elif has_color_patch(values):

      print('skipping color patch sequence %s' % seq)

    elif is_keycap_sequence(values):

      text = get_keycap_text(values)

    else:

      text = get_combining_text(values)

      if not text:

        print('missing %s' % seq)

    if text:

      if len(text) > 3:

        if len(text) == 4:

          hi = text[:2]

          lo = text[2:]

        else:

          hi = text[:-3]

          lo = text[-3:]

        text = '%s\n%s' % (hi, lo)

      generate_image('emoji_u%s.png' % seq, text)