#!/usr/bin/python

import os, argparse, subprocess

parser = argparse.ArgumentParser(description='Batch-resizes images.')

parser.add_argument('images', metavar='IMAGE', type=str, nargs='+',
                   help='images to resize')
                   
parser.add_argument('-s', dest='size', action='store', default="40%",
                   help='size specification to resize to (ImageMagick convert syntax)')
                   
parser.add_argument('-t', dest='type', action='store', default="tif",
                   help='filetype to convert to (defaults to TIFF)')

args = parser.parse_args()
options = vars(args)

for image in options['images']:
	base_name = os.path.splitext(os.path.basename(image))[0]
	base_path = os.path.dirname(image)
	target_path = "%s/out" % base_path
	target_file = "%s/%s.%s" % (target_path, base_name, options['type'])
	
	try:
		os.makedirs(target_path)
	except:
		pass
	
	result = subprocess.call(["convert", image, "-resize", options['size'], target_file])
	
	if result == 0:
		print "Successfully completed '%s' => '%s'" % (image, target_file)
	else:
		print "Failed conversion for '%s' with error code %d." % (image, result)