## Copyright (C) 2011 Uli Fouquet & Henrik Bettermann
## 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
##
"""
Container for the various objects owned by students.
"""
import grok
from grok import index
from zope.component.interfaces import IFactory
from zope.interface import implementedBy
from hurry.workflow.interfaces import IWorkflowInfo, IWorkflowState
from waeup.sirp.interfaces import IObjectHistory
from waeup.sirp.students.interfaces import (
    IStudent, IStudentNavigation, IStudentClearanceEdit,
    IStudentPersonalEdit)
from waeup.sirp.utils.helpers import attrs_to_fields
from waeup.sirp.students.utils import generate_student_id

class Student(grok.Container):
    """This is a student container for the various objects
    owned by students.
    """
    grok.implements(IStudent, IStudentNavigation,
        IStudentPersonalEdit)
    grok.provides(IStudent)

    def __init__(self):
        super(Student, self).__init__()
        IWorkflowInfo(self).fireTransition('create')
        # The site doesn't exist in unit tests
        try:
            students = grok.getSite()['students']
            self.student_id = generate_student_id(students,'?')
        except TypeError:
            self.student_id = u'Z654321'
        self.password = None
        self.adm_code = None
        return

    def loggerInfo(self, ob_class, comment=None):
        target = self.__name__
        return grok.getSite()['students'].logger_info(ob_class,target,comment)

    @property
    def state(self):
        state = IWorkflowState(self).getState()
        return state

    @property
    def history(self):
        history = IObjectHistory(self)
        return history

    def getStudent(self):
        return self

# Set all attributes of Student required in IStudent as field
# properties. Doing this, we do not have to set initial attributes
# ourselves and as a bonus we get free validation when an attribute is
# set.
Student = attrs_to_fields(Student)

class StudentFactory(grok.GlobalUtility):
    """A factory for students.
    """
    grok.implements(IFactory)
    grok.name(u'waeup.Student')
    title = u"Create a new student.",
    description = u"This factory instantiates new student instances."

    def __call__(self, *args, **kw):
        return Student()

    def getInterfaces(self):
        return implementedBy(Student)