#!/usr/bin/python3
# -*- coding: utf-8 -*-
#
# Univention Server Memberserver
#  sets LDAP server according to policy
#
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# Copyright 2003-2023 Univention GmbH
#
# https://www.univention.de/
#
# All rights reserved.
#
# The source code of this program is made available
# under the terms of the GNU Affero General Public License version 3
# (GNU AGPL V3) as published by the Free Software Foundation.
#
# Binary versions of this program provided by Univention to you as
# well as other copyrighted, protected or trademarked materials like
# Logos, graphics, fonts, specific documentations and configurations,
# cryptographic keys etc. are subject to a license agreement between
# you and Univention and not subject to the GNU AGPL V3.
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# In the case you use this program under the terms of the GNU AGPL V3,
# the program is provided 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public
# License with the Debian GNU/Linux or Univention distribution in file
# /usr/share/common-licenses/AGPL-3; if not, see
# <https://www.gnu.org/licenses/>.

import sys

from univention.config_registry import ConfigRegistry
from univention.config_registry.frontend import ucr_update
from univention.lib.policy_result import PolicyResultFailed, policy_result


configRegistry = ConfigRegistry(write_registry=ConfigRegistry.LDAP)
configRegistry.load()

found = False

ldap_hostdn = configRegistry.get('ldap/hostdn')
if ldap_hostdn:
    for key in ['ldap/server/name', 'ldap/server/addition']:
        ldap_server_string = configRegistry.get(key)
        if ldap_server_string:
            for k in ldap_server_string.split(' '):
                try:
                    results, _policies = policy_result(ldap_hostdn, ldap_server=k)
                except PolicyResultFailed:
                    continue

                addition = []
                updates = {}

                ldap_server_name = configRegistry.get('ldap/server/name')
                results = results.get('univentionLDAPServer', [])
                for new_ldap_server in results:
                    if not found:
                        if not ldap_server_name or new_ldap_server != ldap_server_name:
                            updates['ldap/server/name'] = new_ldap_server
                        found = True
                    else:
                        addition.append(new_ldap_server)

                old = configRegistry.get('ldap/server/addition', '')
                new = ' '.join(addition)
                if new != old:
                    updates['ldap/server/addition'] = new

                if updates:
                    ucr_update(configRegistry, updates)

                sys.exit(0)

sys.exit(1)
