#!/usr/bin/env python
from os.path import expanduser
import shutil
import sys

DEFAULT_INSTALLATION_PATH =  '/usr/local/bin/'

def usage():
    print """usage: %s [-h] [--path /path/to/custom/installation/]

Install cheat on your computer. If the --path option is not used
install it on %s.
""" % (sys.argv[0], DEFAULT_INSTALLATION_PATH,)
    sys.exit(0)

if "-h" in sys.argv:
    usage()

INSTALLATION_PATH = None

try:
    path_index = sys.argv.index("--path")
    INSTALLATION_PATH = sys.argv[path_index + 1]
except ValueError:
    INSTALLATION_PATH = DEFAULT_INSTALLATION_PATH

try:
  shutil.copy('./cheat', INSTALLATION_PATH)
  shutil.copytree('./.cheat', expanduser('~') + '/.cheat')
  print "cheat has been installed successfully."
except IOError as e:
   print >> sys.stderr, e
   sys.exit(1)