# Copyright 2014 NEC Corporation.  All rights reserved.
#
#    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 nova.api.openstack.compute.schemas import personality
from nova.api.openstack import extensions

ALIAS = "os-personality"


class Personality(extensions.V21APIExtensionBase):
    """Personality support."""

    name = "Personality"
    alias = ALIAS
    version = 1

    def get_controller_extensions(self):
        return []

    def get_resources(self):
        return []

    def _get_injected_files(self, personality):
        """Create a list of injected files from the personality attribute.

        At this time, injected_files must be formatted as a list of
        (file_path, file_content) pairs for compatibility with the
        underlying compute service.
        """
        injected_files = []
        for item in personality:
            injected_files.append((item['path'], item['contents']))
        return injected_files

    # NOTE(gmann): This function is not supposed to use 'body_deprecated_param'
    # parameter as this is placed to handle scheduler_hint extension for V2.1.
    # making 'body_deprecated_param' as optional to avoid changes for
    # server_update & server_rebuild
    def server_create(self, server_dict, create_kwargs,
                      body_deprecated_param=None):
        create_kwargs['injected_files'] = self._get_injected_files(
            server_dict.get('personality', []))

    def server_rebuild(self, server_dict, create_kwargs,
                      body_deprecated_param=None):
        if 'personality' in server_dict:
            create_kwargs['files_to_inject'] = self._get_injected_files(
                                                  server_dict['personality'])

    def get_server_create_schema(self, version):
        return personality.server_create

    get_server_rebuild_schema = get_server_create_schema
