# Copyright 2012-2015 OpenStack Foundation
# 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.

import six


class Manager(object):
    DEFAULT_HEADERS = {
        "Accept": "application/json",
    }

    def __init__(self, client):
        self.client = client

    def _set_default_headers(self, kwargs):
        headers = kwargs.get('headers', {})
        for k, v in six.iteritems(self.DEFAULT_HEADERS):
            if k not in headers:
                headers[k] = v
        kwargs['headers'] = headers
        return kwargs

    def _get(self, *args, **kwargs):
        self._set_default_headers(kwargs)
        return self.client.api.get(*args, **kwargs)

    def _post(self, *args, **kwargs):
        self._set_default_headers(kwargs)
        return self.client.api.post(*args, **kwargs)

    def _put(self, *args, **kwargs):
        self._set_default_headers(kwargs)
        return self.client.api.put(*args, **kwargs)

    def _patch(self, *args, **kwargs):
        self._set_default_headers(kwargs)
        return self.client.api.patch(*args, **kwargs)

    def _delete(self, *args, **kwargs):
        self._set_default_headers(kwargs)
        return self.client.api.delete(*args, **kwargs)