"""
"""

# Created on 2015.10.21
#
# Author: Giovanni Cannata
#
# Copyright 2015 - 2018 Giovanni Cannata
#
# This file is part of ldap3.
#
# ldap3 is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# ldap3 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with ldap3 in the COPYING and COPYING.LESSER files.
# If not, see <http://www.gnu.org/licenses/>.

from ...core.exceptions import LDAPExtensionError
from ...protocol.microsoft import dir_sync_control, extended_dn_control, show_deleted_control
from ... import SUBTREE, DEREF_NEVER
from ...utils.dn import safe_dn


class DirSync(object):
    def __init__(self,
                 connection,
                 sync_base,
                 sync_filter,
                 attributes,
                 cookie,
                 object_security,
                 ancestors_first,
                 public_data_only,
                 incremental_values,
                 max_length,
                 hex_guid
                 ):
        self.connection = connection
        if self.connection.check_names and sync_base:
            self. base = safe_dn(sync_base)
        else:
            self.base = sync_base
        self.filter = sync_filter
        self.attributes = attributes
        self.cookie = cookie
        self.object_security = object_security
        self.ancestors_first = ancestors_first
        self.public_data_only = public_data_only
        self.incremental_values = incremental_values
        self.max_length = max_length
        self.hex_guid = hex_guid
        self.more_results = True

    def loop(self):
        result = self.connection.search(search_base=self.base,
                                        search_filter=self.filter,
                                        search_scope=SUBTREE,
                                        attributes=self.attributes,
                                        dereference_aliases=DEREF_NEVER,
                                        controls=[dir_sync_control(criticality=True,
                                                                   object_security=self.object_security,
                                                                   ancestors_first=self.ancestors_first,
                                                                   public_data_only=self.public_data_only,
                                                                   incremental_values=self.incremental_values,
                                                                   max_length=self.max_length, cookie=self.cookie),
                                                  extended_dn_control(criticality=False, hex_format=self.hex_guid),
                                                  show_deleted_control(criticality=False)]
                                        )
        if not self.connection.strategy.sync:
            response, result = self.connection.get_response(result)
        else:
            response = self.connection.response
            result = self.connection.result

        if result['description'] == 'success' and 'controls' in result and '1.2.840.113556.1.4.841' in result['controls']:
            self.more_results = result['controls']['1.2.840.113556.1.4.841']['value']['more_results']
            self.cookie = result['controls']['1.2.840.113556.1.4.841']['value']['cookie']
            return response
        elif 'controls' in result:
            raise LDAPExtensionError('Missing DirSync control in response from server')
        else:
            raise LDAPExtensionError('error %r in DirSync' % result)

