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

"""
Author: Christopher Steel on behalf of Voice of Access
Copyright: Copyrighted (c) by Massimo Di Pierro (2007-2011)

web2py_clone becomes part of the web2py distribution available
on Pypi via 'pip install web2py'

web2py_clone is one of multiple commands that become available after running
'pip install web2py' in a virtual environment. It requires
mercurial to be installed in the virtual environment.

web2py_clone creates a local clone from the Web2py google code
project in the directory "./web2py," a directory called web2py
one directory up from the location of this script.

./bin/web2py_clone
./web2py
"""


def main():
    iwd = cwd = os.getcwd() # set initial and current working directories
    script_filename = os.path.realpath(__file__)
    script_dirname  = os.path.dirname(script_filename)
    try:
        print ("cwd now: %s" % cwd)
    except:
        print ("command failed %s" % cwd)
    try:
        os.chdir(script_dirname)
        cwd = os.getcwd()
        print ("cwd now: %s" % cwd)
        source = "https://code.google.com/p/web2py/"
        target = os.path.join('..','web2py')
        print ("attempting to clone %s" % source)
        print ("to %s" % target)
        if os.path.isdir(target):
            print ("found directory called web2py at %s" % target)
            print ("is web2py already installed?")
            print ("aborting clone attempt")
        else:
            os.system("hg clone %s %s" % (source,target))
            os.chdir(iwd)  # return to our initial working directory
            cwd = iwd      # set current working directory 

    except:
        print ("web2py-clone failed in second try statement %s" % cwd)

if __name__ == '__main__':
    main()