#!/usr/bin/python
#
# When switching from individual file torrents to a torrent of many files,
# the filenames are usually down-cased and '-' becomes '.'. This script
# will rename all files in the current directory to follow these rules.
#
# To prevent random rewriting of uninteded files, prompts are used.
#
# ### in the future, maybe a switch to skip prompts? dangerous!
#

import os


def main(prompt=True):
  one_renamed = False
  files = os.listdir('.')
  for fname in files:
    renamed = fname.lower().replace('-', '.')
    if fname == renamed:
      continue
    print 'RENAME:', fname
    print '    to:', renamed
    if prompt:
      answer = raw_input(' (y,n,Q,!): ').strip().lower()
      if answer == 'q' or not answer:
        return
      if answer == 'n':
        continue
      if answer == '!':
        prompt = False
      elif answer != 'y':
        print '  ... unknown response. SKIPPING.'
        continue

    # Only here if !prompt, or answered with ! or y.
    os.rename(fname, renamed)
    print '  ... done.'
    one_renamed = True

  if not one_renamed:
    print 'NOTICE: no files to rename.'

      
if __name__ == '__main__':
  main()