source: main/waeup.uniben/trunk/src/waeup/uniben/students/studylevel.py @ 17942

## $Id: studylevel.py 16521 2021-06-29 13:29:15Z 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
##
"""
Container which holds the data of a student study level
and contains the course tickets.
"""
import grok
from zope.component.interfaces import IFactory
from zope.interface import implementedBy
from waeup.kofa.utils.helpers import attrs_to_fields
from waeup.kofa.students.studylevel import (
    StudentStudyLevel, CourseTicket,
    CourseTicketFactory, StudentStudyLevelFactory)
from waeup.kofa.students.interfaces import IStudentNavigation, ICourseTicket
from waeup.uniben.students.interfaces import (
    ICustomStudentStudyLevel, ICustomCourseTicket)


class CustomStudentStudyLevel(StudentStudyLevel):
    """This is a container for course tickets.
    """
    grok.implements(ICustomStudentStudyLevel, IStudentNavigation)
    grok.provides(ICustomStudentStudyLevel)

    def addCourseTicket(self, ticket, course):
        """Add a course ticket object.
        """
        if not ICourseTicket.providedBy(ticket):
            raise TypeError(
                'StudentStudyLeves contain only ICourseTicket instances')
        ticket.code = course.code
        ticket.title = course.title
        ticket.fcode = course.__parent__.__parent__.__parent__.code
        ticket.dcode = course.__parent__.__parent__.code
        ticket.credits = course.credits
        if self.student.entry_session < 2013:
            ticket.passmark = course.passmark - 5
        else:
            ticket.passmark = course.passmark
        ticket.semester = course.semester
        self[ticket.code] = ticket
        return

CustomStudentStudyLevel = attrs_to_fields(
    CustomStudentStudyLevel, omit=['total_credits', 'gpa'])

class CustomStudentStudyLevelFactory(StudentStudyLevelFactory):
    """A factory for student study levels.
    """

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

    def getInterfaces(self):
        return implementedBy(CustomStudentStudyLevel)

class CustomCourseTicket(CourseTicket):
    """This is a course ticket which allows the
    student to attend the course. Lecturers will enter scores and more at
    the end of the term.

    A course ticket contains a copy of the original course and
    course referrer data. If the courses and/or their referrers are removed, the
    corresponding tickets remain unchanged. So we do not need any event
    triggered actions on course tickets.
    """
    grok.implements(ICustomCourseTicket, IStudentNavigation)
    grok.provides(ICustomCourseTicket)

    @property
    def removable_by_student(self):
        return True

    @property
    def _getGradeWeightFromScore(self):
        """Uniben Course Grading System
        """
        if self.total_score is None:
            return (None, None)
        if self.total_score < self.passmark:
            return ('F',0)
        if getattr(self, 'grading_sys', 'A') == 'A':
            if self.total_score >= 70:
                return ('A',5)
            if self.total_score >= 60:
                return ('B',4)
            if self.total_score >= 50:
                return ('C',3)
            if self.total_score >= 45:
                return ('D',2)
            if self.total_score >= 40:
                return ('E',1)
            return ('F',0)
        else:
            if self.total_score >= 70:
                return ('A',5)
            if self.total_score >= 60:
                return ('B',4)
            if self.total_score >= 50:
                return ('C',3)
            if self.total_score >= 45:
                return ('D',2)
            return ('F',0)


CustomCourseTicket = attrs_to_fields(CustomCourseTicket)

class CustomCourseTicketFactory(CourseTicketFactory):
    """A factory for student study levels.
    """

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

    def getInterfaces(self):
        return implementedBy(CustomCourseTicket)