#!/usr/bin/env python
import os
import sys
from cheatsheets import cheat_dir

# assemble a keyphrase out of all params passed to the script
keyphrase = ' '.join(sys.argv[1:])

user_cheat_dir = os.path.join(os.path.expanduser('~'), '.cheat')

# list the files in the cheat directory
cheatsheets = [(f, cheat_dir) for f in os.listdir(cheat_dir) if '.' not in f]
# add the user's cheat files if they have a ~/.cheat directory
if os.path.isdir(user_cheat_dir):
    cheatsheets += [(f, user_cheat_dir) for f in os.listdir(user_cheat_dir)]
cheatsheets.sort()

# print help if requested
if keyphrase in ['', 'help', '--help', '-h']:
  print "Usage: cheat [keyphrase]\n"
  print "Available keyphrases:"
  print "\n".join([name[0] for name in cheatsheets])
  exit()

sheet_found = False
# print the cheatsheet if it exists
for sheet in cheatsheets:
  if keyphrase == sheet[0]:
    cheatsheet_filename = os.path.join(sheet[1], keyphrase)
    with open(cheatsheet_filename, 'r') as cheatsheet:
      print cheatsheet.read()
      sheet_found = True

# if it does not, say so
if not sheet_found:
  print 'No cheatsheet found.'