#!/usr/bin/env python

#

#  License: GPLv3

#

#  Initial Author: Bonnie King <bonniek@fnal.gov>

#         Updates:

#                  Pat Riehecky <riehecky@fnal.gov>

#

'''Get list of repos from gitblit RPC, to grab CentOS sources'''

import optparse

import requests

import simplejson as json

import sys

RPCURL = "https://git.centos.org/rpc/?req=LIST_REPOSITORIES"

def read_args():

    '''

        read in the command line args and set things up

    '''

    desc = '''Get list of git repositories from the GitBlit json RPC

           '''

    usage = "usage: %prog [options] "

    parser = optparse.OptionParser(usage=usage, description=desc)

    parser.add_option('-p', '--project', metavar="<PROJECTS>",

                      help='''project path (default 'rpms', could be 'all', 'core-sig'...)''',

                      default='rpms')

    parser.add_option('-b', '--branch', metavar="<branch name>",

                      help='Only list repos with this branch (default master)',

                      default = 'master')

    parser.add_option('-u', '--url', metavar="<URL>",

                      help='URL to check (default %s)' % (RPCURL),

                      default = RPCURL)

    (options, args) = parser.parse_args()

    return options

def get_repo_list(url, branch, projectpath):

    '''return a list of repo URLs'''

    try:

        req = requests.get(url)

    except requests.exceptions.RequestException as err_msg:

        print err_msg

        sys.exit(1)

    if req.status_code != 200:

        print "Unable to access gitblit api at " + url

        sys.exit(1)

    payload = req.text

    repos = json.loads(payload)

    branchname = 'refs/heads/' + branch

    for repo in repos.keys():

        if projectpath != 'all':

            if repos[repo]['projectPath'] != projectpath:

                del repos[repo]

                continue

        if branchname not in repos[repo]['availableRefs']:

            del repos[repo]

    return repos.keys()

def main():

    '''Broken out so it can be inherited if someone wants'''

    options = read_args()

    repos = get_repo_list(url=options.url, branch=options.branch, projectpath=options.project)

    if repos:

        print '\n'.join(repos)

if __name__ == "__main__":

    main()