# RhodeCode VCSServer provides access to different vcs backends via network.
# Copyright (C) 2014-2023 RhodeCode GmbH
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301  USA
import logging
import hashlib

log = logging.getLogger(__name__)


class AttributeDictBase(dict):
    def __getstate__(self):
        odict = self.__dict__  # get attribute dictionary
        return odict

    def __setstate__(self, dict):
        self.__dict__ = dict

    __setattr__ = dict.__setitem__
    __delattr__ = dict.__delitem__


class StrictAttributeDict(AttributeDictBase):
    """
    Strict Version of Attribute dict which raises an Attribute error when
    requested attribute is not set
    """
    def __getattr__(self, attr):
        try:
            return self[attr]
        except KeyError:
            raise AttributeError(f'{self.__class__} object has no attribute {attr}')


class AttributeDict(AttributeDictBase):
    def __getattr__(self, attr):
        return self.get(attr, None)


def sha1(val):
    return hashlib.sha1(val).hexdigest()