Index: main/kofacustom.edopoly/trunk/src/kofacustom/edopoly/students/utils.py
===================================================================
--- main/kofacustom.edopoly/trunk/src/kofacustom/edopoly/students/utils.py	(revision 15008)
+++ main/kofacustom.edopoly/trunk/src/kofacustom/edopoly/students/utils.py	(revision 15011)
@@ -38,2 +38,114 @@
                (4.5, '2nd Class Upper'),
                (5, '1st Class'))
+
+    def setPaymentDetails(self, category, student,
+            previous_session, previous_level):
+        """Create a payment ticket 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 _('Study course data are incomplete.'), None
+            if previous_session:
+                # Students can pay for previous sessions in all
+                # workflow states.  Fresh students are excluded by the
+                # update method of the PreviousPaymentAddFormPage.
+                if previous_level == 100:
+                    amount = getattr(certificate, 'school_fee_1', 0.0)
+                else:
+                    amount = getattr(certificate, 'school_fee_2', 0.0)
+            else:
+                if student.state == CLEARED:
+                    amount = getattr(certificate, 'school_fee_1', 0.0)
+                elif student.state == RETURNING:
+                    # In case of returning school fee payment the
+                    # payment session and level contain the values of
+                    # the session the student has paid for. Payment
+                    # session is always next session.
+                    p_session, p_level = self.getReturningData(student)
+                    academic_session = self._getSessionConfiguration(p_session)
+                    if academic_session == None:
+                        return _(
+                            u'Session configuration object is not available.'
+                            ), None
+                    amount = getattr(certificate, 'school_fee_2', 0.0)
+                elif student.is_postgrad and student.state == PAID:
+                    # Returning postgraduate students also pay for the
+                    # next session but their level always remains the
+                    # same.
+                    p_session += 1
+                    academic_session = self._getSessionConfiguration(p_session)
+                    if academic_session == None:
+                        return _(
+                            u'Session configuration object is not available.'
+                            ), None
+                    amount = getattr(certificate, 'school_fee_2', 0.0)
+        elif category == 'clearance':
+            try:
+                p_item = student['studycourse'].certificate.code
+            except (AttributeError, TypeError):
+                return _('Study course data are incomplete.'), None
+            amount = academic_session.clearance_fee
+        elif category == 'bed_allocation':
+            p_item = self.getAccommodationDetails(student)['bt']
+            amount = academic_session.booking_fee
+        elif category == 'hostel_maintenance':
+            amount = 0.0
+            bedticket = student['accommodation'].get(
+                str(student.current_session), None)
+            if bedticket is not None and bedticket.bed is not None:
+                p_item = bedticket.bed_coordinates
+                if bedticket.bed.__parent__.maint_fee > 0:
+                    amount = bedticket.bed.__parent__.maint_fee
+                else:
+                    # fallback
+                    amount = academic_session.maint_fee
+            else:
+                return _(u'No bed allocated.'), None
+        elif category == 'logbook':
+            amount = academic_session.logbook_fee
+        elif category == 'ict_entre':
+            amount = academic_session.ict_entre_fee
+        if amount in (0.0, None):
+            return _('Amount could not be determined.'), None
+        if self.samePaymentMade(student, category, p_item, p_session):
+            return _('This type of payment has already been made.'), None
+        if self._isPaymentDisabled(p_session, category, student):
+            return _('This category of payments has been disabled.'), 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
