# Copyright 2016 Hewlett Packard Enterprise Development Company, L.P.
#
# 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 tempest import clients
from tempest import config
from tempest.lib import auth

from designate_tempest_plugin.services.dns.v2.json.blacklists_client import \
    BlacklistsClient
from designate_tempest_plugin.services.dns.v2.json.pool_client import \
    PoolClient
from designate_tempest_plugin.services.dns.v2.json.recordset_client import \
    RecordsetClient
from designate_tempest_plugin.services.dns.v2.json.tld_client import \
    TldClient
from designate_tempest_plugin.services.dns.v2.json.zones_client import \
    ZonesClient


CONF = config.CONF


class ManagerV2Unauthed(clients.Manager):

    def __init__(self, credentials=None):
        super(ManagerV2Unauthed, self).__init__(credentials)
        self.auth_provider = self._auth_provider_class()(
            credentials=self.auth_provider.credentials,
            auth_url=self.auth_provider.auth_client.auth_url,
            disable_ssl_certificate_validation=self.auth_provider.dscv,
            ca_certs=self.auth_provider.ca_certs,
            trace_requests=self.auth_provider.trace_requests,
        )
        self._init_clients(self._get_params())

    def _init_clients(self, params):
        self.zones_client = ZonesClient(**params)
        self.blacklists_client = BlacklistsClient(**params)
        self.recordset_client = RecordsetClient(**params)
        self.pool_client = PoolClient(**params)
        self.tld_client = TldClient(**params)

    def _auth_provider_class(self):
        if CONF.identity.auth_version == 'v3':
            return KeystoneV3UnauthedProvider
        else:
            return KeystoneV2UnauthedProvider

    def _get_params(self):
        params = dict(self.default_params)
        params.update({
            'auth_provider': self.auth_provider,
            'service': CONF.dns.catalog_type,
            'region': CONF.identity.region,
            'endpoint_type': CONF.dns.endpoint_type,
            'build_interval': CONF.dns.build_interval,
            'build_timeout': CONF.dns.build_timeout
        })
        return params


class BaseUnauthedProvider(auth.KeystoneAuthProvider):

    def _decorate_request(self, filters, method, url, headers=None, body=None,
                          auth_data=None):
        result = super(BaseUnauthedProvider, self)._decorate_request(
            filters, method, url, headers=headers, body=body,
            auth_data=auth_data)
        url, headers, body = result
        try:
            del headers['X-Auth-Token']
        except KeyError:
            pass
        return url, headers, body


class KeystoneV2UnauthedProvider(auth.KeystoneV2AuthProvider,
                                 BaseUnauthedProvider):

    def _decorate_request(self, *args, **kwargs):
        return BaseUnauthedProvider._decorate_request(self, *args, **kwargs)


class KeystoneV3UnauthedProvider(auth.KeystoneV3AuthProvider,
                                 BaseUnauthedProvider):

    def _decorate_request(self, *args, **kwargs):
        return BaseUnauthedProvider._decorate_request(self, *args, **kwargs)