#
#  Copyright (c) 2008 Helmut Merz helmutm@cy55.de
#
#  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 2 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#

"""
Definition of view classes and other browser related stuff for the
loops.knowledge package.

$Id$
"""

from zope import interface, component
from zope.app import zapi
from zope.app.pagetemplate import ViewPageTemplateFile
from zope.cachedescriptors.property import Lazy
#from zope.formlib.namedtemplate import NamedTemplate
from zope.i18nmessageid import MessageFactory

from cybertools.typology.interfaces import IType
from loops.browser.common import BaseView
from loops.knowledge.interfaces import IPerson, ITask
from loops.organize.party import getPersonForUser

_ = MessageFactory('zope')


class MyKnowledge(BaseView):

    #template = NamedTemplate('loops.knowledge_macros')
    template = ViewPageTemplateFile('knowledge_macros.pt')

    @Lazy
    def macro(self):
        return self.template.macros['requirements']

    @Lazy
    def person(self):
        person = getPersonForUser(self.context, self.request)
        if person is not None:
            person = IPerson(person)
        return person

    def myKnowledge(self):
        if self.person is None:
            return ()
        knowledge = self.person.getKnowledge()
        return knowledge

    def myKnowledgeProvidersForTask(self):
        if self.person is None:
            return ()
        request = self.request
        task = ITask(self.context)
        # TODO: check correct conceptType for context!
        providers = self.person.getProvidersNeeded(task)
        return ({'required': BaseView(req.context, request),
                 'providers': (BaseView(p.context, request) for p in prov)}
                    for req, prov in providers)