# ------------------------------------------------------------------------------
# The MIT License (MIT)
#
# Copyright (c) 2014-2019 Digital Sapphire
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
# ------------------------------------------------------------------------------
import logging

log = logging.getLogger(__name__)


class ConfigDict(dict):
    def __init__(self, *args, **kwargs):
        super(ConfigDict, self).__init__(*args, **kwargs)
        self.__dict__ = self
        default = kwargs.get('default', {})
        assert isinstance(default, dict)
        self.update(default)

    def update(self, data):
        _data = {}
        for k, v in data.items():
            if k.isupper():
                _data[k] = v
        super(ConfigDict, self).update(_data)

    def from_object(self, obj):
        """Updates the values from the given object

        Args:

            obj (instance): Object with config attributes

        Objects are classes.

        Just the uppercase variables in that object are stored in the config.
        Example usage::

            from yourapplication import default_config
            app.config.from_object(default_config())
        """
        for key in dir(obj):
            if key.isupper():
                self[key] = getattr(obj, key)