#!/usr/bin/python2.5

#

# Copyright 2009 the Melange authors.

#

# 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.

"""Module with rights related methods.

"""

__authors__ = [

  '"Sverre Rabbelier" <sverre@rabbelier.nl>',

  ]

from soc.logic import dicts

class Checker(object):

  """Checker class that maps from prefix and status to membership.

  """

  def __init__(self, rights, prefix):

    """Constructs a Checker for the specified prefix.

    """

    self.rights = rights[prefix]

    self.prefix = prefix

  def getMembership(self, status):

    """Retrieves the membership list for the specified status.

    """

    if status == 'user':

      return ['user']

    if status == 'public':

      return ['anyone']

    return self.rights[status]

  def getMemberships(self):

    """Returns all memberships for the configured prefix.

    """

    extra_rights = {

        'user': ['user'],

        'public': ['anyone'],

        'list': [],

        }

    return dicts.merge(extra_rights, self.rights)