## $Id: utils.py 10806 2013-11-28 17:33:07Z henrik $
##
## 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
##
from time import time
from zope.component import createObject, getUtility
from waeup.kofa.interfaces import (IKofaUtils,
    CLEARED, RETURNING, PAID, REGISTERED, VALIDATED)
from kofacustom.nigeria.students.utils import NigeriaStudentsUtils
from kofacustom.ekodisco.interfaces import MessageFactory as _

class CustomStudentsUtils(NigeriaStudentsUtils):
    """A collection of customized methods.

    """

    # refix
    STUDENT_ID_PREFIX = u'X'

    def setPaymentDetails(self, category, student,
            previous_session, previous_level):
        """Create Payment object and set the payment data of a student for
        the payment category specified.

        """
        p_item = u''
        amount = 0.0
        if previous_session:
            if previous_session < student['studycourse'].entry_session:
                return _('The previous session must not fall below '
                         'your entry session.'), None
            if category == 'schoolfee':
                # School fee is always paid for the following session
                if previous_session > student['studycourse'].current_session:
                    return _('This is not a previous session.'), None
            else:
                if previous_session > student['studycourse'].current_session - 1:
                    return _('This is not a previous session.'), None
            p_session = previous_session
            p_level = previous_level
            p_current = False
        else:
            p_session = student['studycourse'].current_session
            p_level = student['studycourse'].current_level
            p_current = True
        academic_session = self._getSessionConfiguration(p_session)
        if academic_session == None:
            return _(u'Session configuration object is not available.'), None
        # Determine fee.
        if category == 'schoolfee':
            try:
                certificate = student['studycourse'].certificate
                p_item = certificate.code
            except (AttributeError, TypeError):
                return _('Contract data are incomplete.'), None
            amount = getattr(certificate, 'school_fee_1', 0.0)
        if amount in (0.0, None):
            return _('Amount could not be determined.'), None
        for key in student['payments'].keys():
            ticket = student['payments'][key]
            if ticket.p_state == 'paid' and\
               ticket.p_category == category and \
               ticket.p_item == p_item and \
               ticket.p_session == p_session:
                  return _('This type of payment has already been made.'), None
        payment = createObject(u'waeup.StudentOnlinePayment')
        timestamp = ("%d" % int(time()*10000))[1:]
        payment.p_id = "p%s" % timestamp
        payment.p_category = category
        payment.p_item = p_item
        payment.p_session = p_session
        payment.p_level = p_level
        payment.p_current = p_current
        payment.amount_auth = amount
        return None, payment