## $Id: interfaces.py 9537 2012-11-05 17:47:30Z henrik $
##
## Copyright (C) 2012 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
##

from zope import schema
from zc.sourcefactory.contextual import BasicContextualSourceFactory
from zope.catalog.interfaces import ICatalog
from zope.component import getUtility
from waeup.kofa.interfaces import IKofaObject
from kofacustom.nigeria.students.interfaces import (
    INigeriaStudentBase, INigeriaUGStudentClearance, INigeriaPGStudentClearance,
    INigeriaStudentPersonal, INigeriaStudentStudyLevel,
    INigeriaStudentStudyCourse, INigeriaCourseTicket,
    INigeriaStudentUpdateByRegNo, INigeriaStudentUpdateByMatricNo,
    )
from waeup.aaue.payments.interfaces import ICustomOnlinePayment
from waeup.aaue.interfaces import MessageFactory as _

class CourseSource(BasicContextualSourceFactory):
    """A course source delivers all courses inside the portal by looking
       up a catalog.
    """
    def getValues(self, context):
        catalog = getUtility(ICatalog, name='courses_catalog')
        courses = sorted(list(catalog.searchResults(
            code=(None, None))),key=lambda value: value.code)
        payments = context.student.getPaymentTuples()
        if (context.student.current_session, 'schoolfee_2', 'paid') in payments:
            pass
        else:
            courseslist = list(courses)
            for course in courseslist:
                if course.semester == 2:
                    courses.remove(course)
        return courses

    def getToken(self, context, value):
        return value.code

    def getTitle(self, context, value):
        return "%s - %s (%d)" % (
            value.code, value.title[:64], value.semester)

class ICustomStudentBase(INigeriaStudentBase):
    """Representation of student base data.

    """

class ICustomStudentPersonal(INigeriaStudentPersonal):
    """Student personal data.

    """

class ICustomUGStudentClearance(INigeriaUGStudentClearance):
    """Representation of ug student clearance data.

    """

class ICustomPGStudentClearance(INigeriaPGStudentClearance):
    """Representation of pg student clearance data.

    """


class ICustomStudent(ICustomStudentBase,ICustomUGStudentClearance,
    ICustomPGStudentClearance,ICustomStudentPersonal):
    """Representation of a student.

    """

class ICustomStudentStudyCourse(INigeriaStudentStudyCourse):
    """A container for student study levels.

    """

class ICustomStudentStudyLevel(INigeriaStudentStudyLevel):
    """A container for course tickets.

    """

class ICustomStudentOnlinePayment(ICustomOnlinePayment):
    """A student payment via payment gateways.

    This Interface does not inherit from IStudentOnlinePayment.
    Thus all fields from IStudentOnlinePayment have to be repeated here.
    """

    p_current = schema.Bool(
        title = _(u'Current Session Payment'),
        default = True,
        required = False,
        )

    p_level = schema.Int(
        title = _(u'Payment Level'),
        required = False,
        )

ICustomStudentOnlinePayment['p_level'].order = ICustomStudentOnlinePayment[
    'p_session'].order

class ICustomCourseTicket(INigeriaCourseTicket):
    """A course ticket.

    """

class ICustomCourseTicketAdd(IKofaObject):
    """An interface for adding course tickets.

    """
    course = schema.Choice(
        title = _(u'Course'),
        source = CourseSource(),
        readonly = False,
        )

class ICustomStudentUpdateByRegNo(INigeriaStudentUpdateByRegNo):
    """Representation of a student. Skip regular reg_number validation.

    """

class ICustomStudentUpdateByMatricNo(INigeriaStudentUpdateByMatricNo):
    """Representation of a student. Skip regular matric_number validation.

    """