#!/usr/bin/env python3

import sys, traceback
from PIL import Image

flip_d = False

if len(sys.argv)<2:
	print('ERROR: Please specify at least one file to convert!')
	print('Note: character size is calculated based on resolution assuming 16x16 grid.\n')

for i in range(len(sys.argv)-1):
	if sys.argv[i+1][:1]!='-':
		continue
	if sys.argv[i+1]=='-f':
		flip_d = True

for i in range(len(sys.argv)-1):
	if sys.argv[i+1][:1]=='-':
		continue
	try:
		print(f'Processing "{sys.argv[i+1]}"...')
		img = Image.open(sys.argv[i+1])
		width, height = img.size
		cw = width>>4
		ch = height>>4
		print(f'({width},{height}) => char({cw},{ch})')
		pixels = img.load()
		f = open(f'{sys.argv[i+1]}.bin','wb')
		ba = bytearray()
		for y in range(16):
			for x in range(16):
				for py in range(ch):
					outbyte = 0
					for px in range(cw):
						if flip_d:
							outbyte = outbyte << 1
						if pixels[(x*cw)+px,(y*ch)+py]>0:
							if flip_d:
								outbyte = outbyte | 1
							else:
								outbyte = outbyte | (1<<(px&7))
						if (px&7)==7:
							ba.append(outbyte)
							outbyte=0
		f.write(ba)
		f.close()
		
	except Exception as e:
		print(f'Exception caught!\n"{traceback.format_exc()}"')

print('Task completed.\n')