""" Implements functionality for cloning a gitenberg repo book from GITenberg """

import logging

import os

import sh

from .book_identity import BookRepoName

from .library import GitbergLibraryManager

def clone(arg_book_name, library_path=None):

logging.info("running clone")

book_repo_name = BookRepoName(arg_book_name)

vat = CloneVat(book_repo_name)

success, message = vat.clone()

logging.info(message)

class CloneVat(object):

""" An object for cloning GITenberg repos

:takes: `book_repo_name` -- a BookRepoName instance eg. `BookRepoName('Frankenstein_84)`

"""

def __init__(self, book_repo_name):

self.book_repo_name = book_repo_name

# create a local instance of the library manager with the provided

# config if available

self.l_manager = GitbergLibraryManager()

def library_book_dir(self):

return os.path.join(self.l_manager.library_base_path(), self.book_repo_name.repo_name)

def path_exists(self):

if os.path.exists(self.library_book_dir()):

return True

else:

return False

def clone(self):

""" clones a book from GITenberg's repo into the library

assumes you are authenticated to git clone from repo?

returns True/False, message

"""

# FIXME: check if this works from a server install

logging.debug("Attempting to clone {0}".format(self.book_repo_name.repo_name))

if self.path_exists():

return False, "Error: Local clone of {0} already exists".format(

self.book_repo_name.repo_name)

# TODO: rewrite using github3.py's git module

try:

sh.git('clone', self.book_repo_name.get_clone_url_ssh(), self.library_book_dir())

return True, "Success! Cloned {0}".format(self.book_repo_name.repo_name)

except sh.ErrorReturnCode_128:

# TODO: log exception information here on debug

logging.debug("clone ran into an issue, likely this already exists")

return False, "Error sh.py returned with a fail code"