#!/usr/bin/env python
from PIL import Image, ImageDraw, ImageFont
import sys, os

def batchsign(path, text):
  for each in os.listdir(path):
    if each.endswith('.jpg'):
      try:
        name = os.path.join(path, each)
        save = os.path.splitext(name)
        sign(name, text, save[0] + '_signed.jpg')
        print name + ' signed'
      except IOError: None

def sign(filename, text, outfilename):
    img = Image.open(filename).convert("RGB")
    watermark = Image.new("RGBA", (img.size[0], img.size[1]))
    draw = ImageDraw.ImageDraw(watermark, "RGBA")
    font = ImageFont.truetype("Verdanai.ttf", 24)
    textwidth, textheight = font.getsize(text)
    x1 = img.size[0] - (textwidth + 10)
    y1 = img.size[1] - (textheight + 10)
    draw.setfont(font)
    draw.text((x1, y1), text)
    mask = watermark.convert("L").point(lambda x: min(x, 80))
    watermark.putalpha(mask)
    img.paste(watermark, None, watermark)
    img.save(outfilename)

if __name__ == '__main__':
  if len(sys.argv) != 2:
    sys.exit("Usage: %s <text>"  % os.path.basename(sys.argv[0]))
  batchsign('', *sys.argv[1:])