#!/usr/bin/env python
# The contents of this file are subject to the Common Public Attribution
# License Version 1.0. (the "License"); you may not use this file except in
# compliance with the License. You may obtain a copy of the License at
# http://code.reddit.com/LICENSE. The License is based on the Mozilla Public
# License Version 1.1, but Sections 14 and 15 have been added to cover use of
# software over a computer network and provide for limited attribution for the
# Original Developer. In addition, Exhibit A has been modified to be consistent
# with Exhibit B.
#
# Software distributed under the License is distributed on an "AS IS" basis,
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
# the specific language governing rights and limitations under the License.
#
# The Original Code is reddit.
#
# The Original Developer is the Initial Developer.  The Initial Developer of
# the Original Code is reddit Inc.
#
# All portions of the code written by reddit are Copyright (c) 2006-2015 reddit
# Inc. All Rights Reserved.
###############################################################################

import ConfigParser
import base64
import cStringIO
import os
import sys

from r2.lib.utils import parse_ini_file
from r2.lib.zookeeper import connect_to_zookeeper
from r2.lib.app_globals import fetch_secrets


def read_secrets_from_zookeeper(config):
    zk_hostlist = config.get("DEFAULT", "zookeeper_connection_string")
    username = config.get("DEFAULT", "zookeeper_username")
    password = config.get("DEFAULT", "zookeeper_password")

    client = connect_to_zookeeper(zk_hostlist, (username, password))
    secrets = fetch_secrets(client)

    ini = ConfigParser.RawConfigParser()
    ini.optionxform = str
    ini.add_section("secrets")
    for name, secret in secrets.iteritems():
        ini.set("secrets", name, base64.b64encode(secret))

    output = cStringIO.StringIO()
    ini.write(output)
    return output.getvalue()


def main():
    progname = os.path.basename(sys.argv[0])

    try:
        ini_file_name = sys.argv[1]
    except IndexError:
        print >> sys.stderr, "USAGE: %s INI" % progname
        return 1

    try:
        with open(ini_file_name) as ini_file:
            config = parse_ini_file(ini_file)
    except (IOError, ConfigParser.Error), e:
        print >> sys.stderr, "%s: %s: %s" % (progname, ini_file_name, e)
        return 1

    print read_secrets_from_zookeeper(config)


if __name__ == "__main__":
    sys.exit(main())