#!/usr/bin/env python
# Copyright (c) 2010-2011 OpenStack, LLC.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.

from getpass import getpass
import gettext
import json
from optparse import OptionParser
from sys import argv
from sys import exit

from six.moves.urllib.parse import urlparse
from swift.common.bufferedhttp import http_connect_raw as http_connect


if __name__ == '__main__':
    gettext.install('swauth', unicode=1)
    parser = OptionParser(usage='''
Usage: %prog [options] [account] [user]

If [account] and [user] are omitted, a list of accounts will be output.

If [account] is included but not [user], an account's information will be
output, including a list of users within the account.

If [account] and [user] are included, the user's information will be output,
including a list of groups the user belongs to.

If the [user] is '.groups', the active groups for the account will be listed.
'''.strip())
    parser.add_option('-p', '--plain-text', dest='plain_text',
        action='store_true', default=False, help='Changes the output from '
        'JSON to plain text. This will cause an account to list only the '
        'users and a user to list only the groups.')
    parser.add_option('-A', '--admin-url', dest='admin_url',
        default='http://127.0.0.1:8080/auth/', help='The URL to the auth '
        'subsystem (default: http://127.0.0.1:8080/auth/')
    parser.add_option('-U', '--admin-user', dest='admin_user',
        default='.super_admin', help='The user with admin rights to add users '
        '(default: .super_admin).')
    parser.add_option('-K', '--admin-key', dest='admin_key',
        help='The key for the user with admin rights to add users.')
    args = argv[1:]
    if not args:
        args.append('-h')
    (options, args) = parser.parse_args(args)
    if len(args) > 2:
        parser.parse_args(['-h'])
    if not options.admin_key:
        options.admin_key = getpass()
    parsed = urlparse(options.admin_url)
    if parsed.scheme not in ('http', 'https'):
        raise ValueError('Cannot handle protocol scheme %s for url %s' %
                         (parsed.scheme, repr(options.admin_url)))
    parsed_path = parsed.path
    if not parsed_path:
        parsed_path = '/'
    elif parsed_path[-1] != '/':
        parsed_path += '/'
    path = '%sv2/%s' % (parsed_path, '/'.join(args))
    headers = {'X-Auth-Admin-User': options.admin_user,
               'X-Auth-Admin-Key': options.admin_key}
    conn = http_connect(parsed.hostname, parsed.port, 'GET', path, headers,
                        ssl=(parsed.scheme == 'https'))
    resp = conn.getresponse()
    body = resp.read()
    if resp.status // 100 != 2:
        exit('List failed: %s %s' % (resp.status, resp.reason))
    if options.plain_text:
        info = json.loads(body)
        for group in info[['accounts', 'users', 'groups'][len(args)]]:
            print(group['name'])
    else:
        print(body)