#!/usr/bin/env python
import os
import sys

try:
    # check to see if the cheat package is available
    import cheatsheets
    cheat_dir = cheatsheets.cheat_dir
    cheatsheets = [(f, cheat_dir) for f in os.listdir(cheat_dir) if '.' not in f]
except ImportError:
    cheatsheets = []

# construct the path to the cheat directory
user_cheat_dir = os.path.join(os.path.expanduser('~'), '.cheat')

# list the files in the cheat directory
# 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)
                    if '.' not in f]
cheatsheets.sort()

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

# 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.'