##############################################################################
#
# PlonePAS - Adapt PluggableAuthService for use in Plone
# Copyright (C) 2005 Enfold Systems, Kapil Thangavelu, et al
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL).  A copy of the ZPL should accompany this
# distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
#
##############################################################################
"""
an archetypes storage that delegates to a pas property provider.

main use.. cmfmember integration w/ properties providers

"""

from AccessControl import ClassSecurityInfo
from Globals import InitializeClass
from Products.Archetypes.public import setSecurity, registerStorage, IStorage
from Products.PluggableAuthService.utils import classImplements
from Products.PluggableAuthService.interfaces.plugins import IPropertiesProvider
from Products.PlonePAS.interfaces.propertysheets import IMutablePropertySheet

class PASStorage(object):

    security = ClassSecurityInfo()

    def get(self, name, instance, **kwargs):
        user = instance.getUser()
        sheets = user.getOrderedSheets()
        for sheet in sheets:
            if sheet.hasProperty( name ):
                return sheet.getProperty( name )
        raise AttributeError( name )

    def set(self, name, instance, value, **kwargs):
        user = instance.getUser()
        sheets = user.getOrderedSheets()
        for sheet in sheets:
            if sheet.hasProperty( name ):
                if IMutablePropertySheet.providedBy( sheet ):
                    sheet.setProperty( k, v )
                else:
                    raise RuntimeError("mutable property provider shadowed by read only provider")

classImplements(PASStorage,
                IStorage)