#!/usr/bin/env python2
# vim: filetype=python

# bugh: Make read-only backups of your Github repositories
# Copyright (C) 2012, Will Haldean Brown
# 
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

import requests
import os.path
from sh import git, cd, ErrorReturnCode

git_pull = git.bake('pull')
git_clone = git.bake('clone')

def user_repos(user):
  req = requests.get('https://api.github.com/users/%s/repos?per_page=100' % user)
  return req.json

def clone_repos(repos):
  for repo in repos:
    if os.path.exists(repo['name']):
      print 'Pulling changes for %s' % repo['name']
      cd(repo['name'])

      try:
        git_pull('origin', 'master')
      except ErrorReturnCode:
        print 'Unable to pull changes from repository %s' % repo['name']

      cd('..')
    else:
      print 'Cloning %s' % repo['name']
      git_clone(repo["clone_url"])

if __name__ == '__main__':
  import sys
  if len(sys.argv) != 2:
    print 'Usage: %s [github username]' % __file__
  else:
    clone_repos(user_repos(sys.argv[1]))
