# -*- coding: utf-8 -*-
## $Id: interfaces.py 17964 2024-11-27 00:30:20Z 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
##
"""Customized interfaces of the university application package.
"""

#from grok import getSite
import re
from zope import schema
from zope.interface import invariant, Invalid
from zope.component import getUtility
from zope.catalog.interfaces import ICatalog
from zc.sourcefactory.basic import BasicSourceFactory
from waeup.kofa.applicants.interfaces import (
    IApplicantBaseData,
    AppCatCertificateSource, CertificateSource)
from waeup.kofa.university.vocabularies import StudyModeSource
from waeup.kofa.students.vocabularies import (
    nats_vocab, GenderSource, StudyLevelSource)
from waeup.kofa.schoolgrades import ResultEntryField
from waeup.kofa.interfaces import (
    SimpleKofaVocabulary, academic_sessions_vocab, validate_email,
    IKofaObject, ContextualDictSourceFactoryBase)
from waeup.kofa.schema import FormattedDate, TextLineChoice, PhoneNumber
from waeup.kofa.students.vocabularies import (
    nats_vocab, GenderSource)
from waeup.kofa.refereeentries import RefereeEntryField
from waeup.kofa.applicants.interfaces import contextual_reg_num_source
from kofacustom.nigeria.interfaces import DisabilitiesSource
from kofacustom.nigeria.applicants.interfaces import (
    LGASource, high_qual, high_grade, exam_types,
    programme_types_vocab, jambsubjects,
    INigeriaUGApplicant, INigeriaPGApplicant,
    INigeriaApplicantOnlinePayment,
    INigeriaUGApplicantEdit, INigeriaPGApplicantEdit,
    INigeriaApplicantUpdateByRegNo,
    IPUTMEApplicantEdit,
    IBankAccount,
    )
from waeup.uniben.interfaces import MessageFactory as _
from waeup.uniben.payments.interfaces import ICustomOnlinePayment


# Define a validation method for JAMB reg numbers
class NotMatricRegNumber(schema.ValidationError):
    __doc__ = u"Invalid matriculation number"

#: Regular expression to check matric_number formats.
check_matric_number = re.compile(r"^[^0-9\s][^\s]*$").match

def validate_matric_number(value):
    if not check_matric_number(value):
        raise NotMatricRegNumber(value)
    return True

class TranscriptCertificateSource(CertificateSource):
    """Include Department and Faculty in Title.
    """
    def getValues(self, context):
        catalog = getUtility(ICatalog, name='certificates_catalog')
        resultset = catalog.searchResults(code=(None, None))
        resultlist = sorted(resultset, key=lambda
            value: value.__parent__.__parent__.__parent__.code +
            value.__parent__.__parent__.code +
            value.code)
        return resultlist

    def getTitle(self, context, value):
        """
        """
        try: title = "%s / %s / %s (%s)" % (
            value.__parent__.__parent__.__parent__.title,
            value.__parent__.__parent__.title,
            value.title, value.code)
        except AttributeError:
            title = "NA / %s (%s)" % (value.title, value.code)
        return title

REGISTRATION_CATS = {
    'corporate': ('Corporate Registration', 250000, 1),
    'group': ('Group Registration', 200000, 2),
    'individual': ('Individual Registration', 45000, 3),
    'student': ('Student Registration', 5000, 4),
    'fullpage': ('Full Page Advert', 250000, 5),
    'halfpage': ('Half Page Advert', 150000, 6),
    'quarterpage': ('Quarter Page Advert', 100000, 7),
    }

class RegTypesSource(BasicSourceFactory):
    """A source that delivers all kinds of registrations.
    """
    def getValues(self):
        sorted_items = sorted(REGISTRATION_CATS.items(),
                              key=lambda element: element[1][2])
        return [item[0] for item in sorted_items]

    def getTitle(self, value):
        return u"%s @ ₦ %s" % (
            REGISTRATION_CATS[value][0],
            REGISTRATION_CATS[value][1])

DESTINATION_COST = {
    #'none': ('To the moon', 1000000000.0, 1),
    'nigeria': ('Within Nigeria', 20000.0, 1),
    'africa': ('Within Africa ', 30000.0, 2),
    'inter': ('International', 35000.0, 3),
    'cert_nigeria': ('Certified Copy - Within Nigeria', 13000.0, 4),
    'cert_africa': ('Certified Copy - Within Africa', 23000.0, 5),
    'cert_inter': ('Certified Copy - International', 28000.0, 6),
    }

class DestinationCostSource(BasicSourceFactory):
    """A source that delivers continents and shipment costs.
    """
    def getValues(self):
        sorted_items = sorted(DESTINATION_COST.items(),
                              key=lambda element: element[1][2])
        return [item[0] for item in sorted_items]

    def getToken(self, value):
        return value

    def getTitle(self, value):
        return u"%s (₦ %s)" % (
            DESTINATION_COST[value][0],
            DESTINATION_COST[value][1])

class OrderSource(BasicSourceFactory):
    """
    """
    def getValues(self):
        return ['o', 'c']

    def getToken(self, value):
        return value

    def getTitle(self, value):
        if value == 'o':
            return _('Original')
        if value == 'c':
            return _('Certified True Copy')

class ProficiencySource(BasicSourceFactory):
    """
    """
    def getValues(self):
        return ['n', 'c', 'p']

    def getToken(self, value):
        return value

    def getTitle(self, value):
        if value == 'n':
            return _('none')
        if value == 'c':
            return _('conversational')
        if value == 'p':
            return _('professional')

class PreferredSessionSource(BasicSourceFactory):
    """
    """
    def getValues(self):
        return ['m', 'e', 'w']

    def getToken(self, value):
        return value

    def getTitle(self, value):
        if value == 'm':
            return _('morning')
        if value == 'e':
            return _('evening')
        if value == 'w':
            return _('weekend')

class IUnibenRegistration(IKofaObject):
    """A Uniben registrant.
    """

    suspended = schema.Bool(
        title = _(u'Account suspended'),
        default = False,
        required = False,
        )

    locked = schema.Bool(
        title = _(u'Form locked'),
        default = False,
        required = False,
        )

    applicant_id = schema.TextLine(
        title = _(u'Registrant Id'),
        required = False,
        readonly = False,
        )

    firstname = schema.TextLine(
        title = _(u'First Name'),
        required = True,
        )

    middlename = schema.TextLine(
        title = _(u'Middle Name'),
        required = False,
        )

    lastname = schema.TextLine(
        title = _(u'Last Name (Surname)'),
        required = True,
        )

    sex = schema.Choice(
        title = _(u'Sex'),
        source = GenderSource(),
        required = True,
        )

    nationality = schema.Choice(
        vocabulary = nats_vocab,
        title = _(u'Nationality'),
        required = False,
        )

    email = schema.ASCIILine(
        title = _(u'Email Address'),
        required = True,
        constraint=validate_email,
        )

    phone = PhoneNumber(
        title = _(u'Phone'),
        description = u'',
        required = False,
        )

    #perm_address = schema.Text(
    #    title = _(u'Current Local Address'),
    #    required = False,
    #    readonly = False,
    #    )

    institution = schema.TextLine(
        title = _(u'Institution/Organisation'),
        required = False,
        readonly = False,
        )

    city = schema.TextLine(
        title = _(u'City'),
        required = False,
        readonly = False,
        )

    lga = schema.Choice(
        source = LGASource(),
        title = _(u'State/LGA'),
        required = False,
        )

    matric_number = schema.TextLine(
        title = _(u'Uniben Matriculation Number'),
        required = False,
        readonly = False,
        )

    registration_cats = schema.List(
        title = _(u'Registration Categories'),
        value_type = schema.Choice(source=RegTypesSource()),
        required = True,
        defaultFactory=list,
        )

#    @invariant
#    def matric_number_exists(applicant):
#        if applicant.matric_number:
#            catalog = getUtility(ICatalog, name='students_catalog')
#            accommodation_session = getSite()['hostels'].accommodation_session
#            student = catalog.searchResults(matric_number=(
#                applicant.matric_number, applicant.matric_number))
#            if len(student) != 1:
#                raise Invalid(_("Matriculation number not found."))

class ITranscriptApplicant(IKofaObject):
    """A transcript applicant.
    """

    suspended = schema.Bool(
        title = _(u'Account suspended'),
        default = False,
        required = False,
        )

    locked = schema.Bool(
        title = _(u'Form locked'),
        default = False,
        required = False,
        )

    applicant_id = schema.TextLine(
        title = _(u'Transcript Application Id'),
        required = False,
        readonly = False,
        )

    student_id = schema.TextLine(
        title = _(u'Kofa Student Id'),
        required = False,
        readonly = False,
        )

    matric_number = schema.TextLine(
        title = _(u'Matriculation Number'),
        readonly = False,
        required = True,
        constraint = validate_matric_number,
        )

    firstname = schema.TextLine(
        title = _(u'First Name in School'),
        required = True,
        )

    middlename = schema.TextLine(
        title = _(u'Middle Name in School'),
        required = False,
        )

    lastname = schema.TextLine(
        title = _(u'Surname in School'),
        required = True,
        )

    date_of_birth = FormattedDate(
        title = _(u'Date of Birth'),
        required = False,
        #date_format = u'%d/%m/%Y', # Use grok-instance-wide default
        show_year = True,
        )

    sex = schema.Choice(
        title = _(u'Gender'),
        source = GenderSource(),
        required = True,
        )

    #nationality = schema.Choice(
    #    vocabulary = nats_vocab,
    #    title = _(u'Nationality'),
    #    required = False,
    #    )

    email = schema.ASCIILine(
        title = _(u'Email Address'),
        required = True,
        constraint=validate_email,
        )

    phone = PhoneNumber(
        title = _(u'Phone'),
        description = u'',
        required = False,
        )

    #perm_address = schema.Text(
    #    title = _(u'Current Local Address'),
    #    required = False,
    #    readonly = False,
    #    )

    collected = schema.Bool(
        title = _(u'Have you collected transcript before?'),
        default = False,
        required = False,
        )

    entry_session = schema.Choice(
        title = _(u'Academic Session of Entry'),
        source = academic_sessions_vocab,
        required = False,
        readonly = False,
        )

    end_session = schema.Choice(
        title = _(u'Academic Session of Graduation'),
        source = academic_sessions_vocab,
        required = False,
        readonly = False,
        )

    entry_mode = schema.Choice(
        title = _(u'Mode of Entry'),
        source = StudyModeSource(),
        required = False,
        readonly = False,
        )

    course_studied = schema.Choice(
        title = _(u'Course of Study'),
        source = TranscriptCertificateSource(),
        description = u'Faculty / Department / Course',
        required = True,
        readonly = False,
        )

    course_changed = schema.Choice(
        title = _(u'Change of Study Course / Transfer'),
        description = u'If yes, select previous course of study.',
        source = TranscriptCertificateSource(),
        readonly = False,
        required = False,
        )

    spillover_level = schema.Choice(
        title = _(u'Spill-over'),
        description = u'Any spill-over? If yes, select session of spill-over.',
        source = academic_sessions_vocab,
        required = False,
        readonly = False,
        )

    purpose = schema.TextLine(
        title = _(u'Transcript Purpose'),
        required = False,
        )

    order = schema.Choice(
        source = OrderSource(),
        title = _(u'Type of Order'),
        required = False,
        )

    dispatch_address = schema.Text(
        title = _(u'Recipient Body'),
        description = u'Addresses to which transcripts should be posted. '
                       'All addresses must involve same courier charges.',
        required = True,
        readonly = False,
        )

    dispatch_email = schema.ASCIILine(
        title = _(u'Recipient Email Address'),
        required = False,
        constraint=validate_email,
        )

    dispatch_phone = PhoneNumber(
        title = _(u'Recipient Phone'),
        description = u'',
        required = False,
        )

    charge = schema.Choice(
        title = _(u'Transcript Charge'),
        source = DestinationCostSource(),
        required = False,
        readonly = False,
        )

    no_copies = schema.Choice(
        title = _(u'Number of Copies'),
        description = u'Must correspond with the number of dispatch addresses above.',
        values=[1, 2, 3, 4],
        required = False,
        readonly = False,
        default = 1,
        )

    courier_tno = schema.TextLine(
        title = _(u'Courier Tracking Number'),
        required = False,
        )

    proc_date = FormattedDate(
        title = _(u'Processing Date'),
        required = False,
        #date_format = u'%d/%m/%Y', # Use grok-instance-wide default
        show_year = True,
        )

    @invariant
    def type_of_order(applicant):
        if not applicant.collected and applicant.order != 'o':
            raise Invalid(_("If you haven't collected transcript before, type of order must be 'original'."))
        if applicant.order == 'o' and applicant.charge.startswith('cert_'):
            raise Invalid(_("You've selected the wrong transcript charge."))
        if applicant.order == 'c' and not applicant.charge.startswith('cert_'):
            raise Invalid(_("You've selected the wrong transcript charge."))

class IFrenchApplicant(IKofaObject):
    """A transcript applicant.
    """

    suspended = schema.Bool(
        title = _(u'Account suspended'),
        default = False,
        required = False,
        )

    locked = schema.Bool(
        title = _(u'Form locked'),
        default = False,
        required = False,
        )

    applicant_id = schema.TextLine(
        title = _(u'Applicant Id'),
        required = False,
        readonly = False,
        )

    firstname = schema.TextLine(
        title = _(u'First Name'),
        required = True,
        )

    middlename = schema.TextLine(
        title = _(u'Middle Name'),
        required = False,
        )

    lastname = schema.TextLine(
        title = _(u'Surname'),
        required = True,
        )

    date_of_birth = FormattedDate(
        title = _(u'Date of Birth'),
        required = False,
        #date_format = u'%d/%m/%Y', # Use grok-instance-wide default
        show_year = True,
        )

    sex = schema.Choice(
        title = _(u'Gender'),
        source = GenderSource(),
        required = True,
        )

    nationality = schema.Choice(
        vocabulary = nats_vocab,
        title = _(u'Nationality'),
        required = False,
        )

    email = schema.ASCIILine(
        title = _(u'Email Address'),
        required = True,
        constraint=validate_email,
        )

    phone = PhoneNumber(
        title = _(u'Phone'),
        description = u'',
        required = False,
        )

    work = schema.TextLine(
        title = _(u'Place of Work'),
        required = False,
        )

    hq_obtained = schema.Choice(
        title = _(u'Highest Qualification Obtained'),
        required = False,
        readonly = False,
        vocabulary = high_qual,
        )

    hq_date = FormattedDate(
        title = _(u'Highest Qualification Date'),
        required = False,
        readonly = False,
        show_year = True,
        )

    pref_session = schema.Choice(
        source = PreferredSessionSource(),
        title = _(u'Preferred Session'),
        required = False,
        )

    proficiency = schema.Choice(
        source = ProficiencySource(),
        title = _(u'Level of Proficiency'),
        required = False,
        )

    guarantor = schema.TextLine(
        title = _(u'Name of Guarantor'),
        required = False,
        )

    course_admitted = schema.Choice(
        title = _(u'Admitted Course of Study'),
        source = CertificateSource(),
        required = False,
        )

class IAfrimalApplicant(IKofaObject):
    """An AFRIMAL applicant.
    """

    suspended = schema.Bool(
        title = _(u'Account suspended'),
        default = False,
        required = False,
        )

    locked = schema.Bool(
        title = _(u'Form locked'),
        default = False,
        required = False,
        )

    applicant_id = schema.TextLine(
        title = _(u'Applicant Id'),
        required = False,
        readonly = False,
        )

    firstname = schema.TextLine(
        title = _(u'First Name'),
        required = True,
        )

    middlename = schema.TextLine(
        title = _(u'Middle Name'),
        required = False,
        )

    lastname = schema.TextLine(
        title = _(u'Surname'),
        required = True,
        )

    date_of_birth = FormattedDate(
        title = _(u'Date of Birth'),
        required = False,
        #date_format = u'%d/%m/%Y', # Use grok-instance-wide default
        show_year = True,
        )

    sex = schema.Choice(
        title = _(u'Gender'),
        source = GenderSource(),
        required = True,
        )

    nationality = schema.Choice(
        vocabulary = nats_vocab,
        title = _(u'Nationality'),
        required = False,
        )

    email = schema.ASCIILine(
        title = _(u'Email Address'),
        required = True,
        constraint=validate_email,
        )

    phone = PhoneNumber(
        title = _(u'Phone'),
        description = u'',
        required = False,
        )

    hq_obtained = schema.Choice(
        title = _(u'Highest Qualification Obtained'),
        required = False,
        readonly = False,
        vocabulary = high_qual,
        )

    current_employer = schema.TextLine(
        title = _(u'Current Employer'),
        required = False,
        )

    course1 = schema.Choice(
        title = _(u'Course of Study'),
        source = AppCatCertificateSource(),
        required = True,
        )

    course_admitted = schema.Choice(
        title = _(u'Admitted Course of Study'),
        source = CertificateSource(),
        required = False,
        )

class ICustomUGApplicant(IApplicantBaseData, IBankAccount):
    """An undergraduate applicant.

    This interface defines the least common multiple of all fields
    in ug application forms. In customized forms, fields can be excluded by
    adding them to the UG_OMIT* tuples.
    """

    disabilities = schema.Choice(
        title = _(u'Disabilities'),
        source = DisabilitiesSource(),
        required = False,
        )
    nationality = schema.Choice(
        source = nats_vocab,
        title = _(u'Nationality'),
        required = False,
        )
    lga = schema.Choice(
        source = LGASource(),
        title = _(u'State/LGA (Nigerians only)'),
        required = False,
        )
    #perm_address = schema.Text(
    #    title = _(u'Permanent Address'),
    #    required = False,
    #    )
    course1 = schema.Choice(
        title = _(u'1st Choice Course of Study'),
        source = AppCatCertificateSource(),
        required = True,
        )
    course2 = schema.Choice(
        title = _(u'2nd Choice Course of Study'),
        source = AppCatCertificateSource(),
        required = False,
        )

    programme_type = schema.Choice(
        title = _(u'Programme Type'),
        vocabulary = programme_types_vocab,
        required = False,
        )

    hq_type = schema.Choice(
        title = _(u'Qualification Obtained'),
        required = False,
        readonly = False,
        vocabulary = high_qual,
        )
    hq_matric_no = schema.TextLine(
        title = _(u'Former Matric Number'),
        required = False,
        readonly = False,
        )
    hq_degree = schema.Choice(
        title = _(u'Class of Degree'),
        required = False,
        readonly = False,
        vocabulary = high_grade,
        )
    hq_school = schema.TextLine(
        title = _(u'Institution Attended'),
        required = False,
        readonly = False,
        )
    hq_session = schema.TextLine(
        title = _(u'Years Attended'),
        required = False,
        readonly = False,
        )
    hq_disc = schema.TextLine(
        title = _(u'Discipline'),
        required = False,
        readonly = False,
        )
    fst_sit_fname = schema.TextLine(
        title = _(u'Full Name'),
        required = False,
        readonly = False,
        )
    fst_sit_no = schema.TextLine(
        title = _(u'Exam Number'),
        required = False,
        readonly = False,
        )
    fst_sit_date = FormattedDate(
        title = _(u'Exam Date'),
        required = False,
        readonly = False,
        show_year = True,
        )
    fst_sit_type = schema.Choice(
        title = _(u'Exam Type'),
        required = False,
        readonly = False,
        vocabulary = exam_types,
        )
    fst_sit_results = schema.List(
        title = _(u'Exam Results'),
        value_type = ResultEntryField(),
        required = False,
        readonly = False,
        defaultFactory=list,
        )
    scd_sit_fname = schema.TextLine(
        title = _(u'Full Name'),
        required = False,
        readonly = False,
        )
    scd_sit_no = schema.TextLine(
        title = _(u'Exam Number'),
        required = False,
        readonly = False,
        )
    scd_sit_date = FormattedDate(
        title = _(u'Exam Date'),
        required = False,
        readonly = False,
        show_year = True,
        )
    scd_sit_type = schema.Choice(
        title = _(u'Exam Type'),
        required = False,
        readonly = False,
        vocabulary = exam_types,
        )
    scd_sit_results = schema.List(
        title = _(u'Exam Results'),
        value_type = ResultEntryField(),
        required = False,
        readonly = False,
        defaultFactory=list,
        )
    jamb_reg_number = schema.TextLine(
        title = _(u'JAMB Registration Number'),
        required = False,
        )
    jamb_subjects = schema.Text(
        title = _(u'Subjects and Scores'),
        required = False,
        )
    jamb_subjects_list = schema.List(
        title = _(u'JAMB Subjects'),
        required = False,
        defaultFactory=list,
        value_type = schema.Choice(
            vocabulary = jambsubjects
            #source = JAMBSubjectSource(),
            ),
        )
    jamb_score = schema.Float(
        title = _(u'Total JAMB Score'),
        required = False,
        )
    #jamb_age = schema.Int(
    #    title = _(u'Age (provided by JAMB)'),
    #    required = False,
    #    )
    course_admitted = schema.Choice(
        title = _(u'Admitted Course of Study'),
        source = CertificateSource(),
        required = False,
        )
    notice = schema.Text(
        title = _(u'Notice'),
        required = False,
        )
    screening_venue = schema.TextLine(
        title = _(u'Screening Venue'),
        required = False,
        )
    screening_date = schema.TextLine(
        title = _(u'Screening Date'),
        required = False,
        )
    screening_score = schema.Float(
        title = _(u'Screening Score (%)'),
        required = False,
        )
    aggregate = schema.Float(
        title = _(u'Aggregate Score (%)'),
        description = _(u'(average of relative JAMB and PUTME scores)'),
        required = False,
        )
    result_uploaded = schema.Bool(
        title = _(u'Result uploaded'),
        default = False,
        required = False,
        )
    student_id = schema.TextLine(
        title = _(u'Student Id'),
        required = False,
        readonly = False,
        )
    locked = schema.Bool(
        title = _(u'Form locked'),
        default = False,
        required = False,
        )

ICustomUGApplicant[
    'locked'].order =  IApplicantBaseData['suspended'].order
ICustomUGApplicant[
    'result_uploaded'].order =  ICustomUGApplicant['suspended'].order

class ICustomPGApplicant(INigeriaPGApplicant):
    """A postgraduate applicant.

    This interface defines the least common multiple of all fields
    in pg application forms. In customized forms, fields can be excluded by
    adding them to the PG_OMIT* tuples.
    """

    referees = schema.List(
        title = _(u'Referees'),
        value_type = RefereeEntryField(),
        required = False,
        defaultFactory=list,
        )

ICustomPGApplicant[
    'referees'].order =  INigeriaPGApplicant['emp2_reason'].order

class ICustomApplicant(ICustomUGApplicant, ICustomPGApplicant,
    IUnibenRegistration, ITranscriptApplicant, IFrenchApplicant,
    IAfrimalApplicant):
    """An interface for both types of applicants.

    Attention: The ICustomPGApplicant field seetings will be overwritten
    by ICustomPGApplicant field settings. If a field is defined
    in both interfaces zope.schema validates only against the
    constraints in ICustomUGApplicant. This does not affect the forms
    since they are build on either ICustomUGApplicant or ICustomPGApplicant.
    """

    def writeLogMessage(view, comment):
        """Adds an INFO message to the log file
        """

    def createStudent():
        """Create a student object from applicant data
        and copy applicant object.
        """

class ICustomUGApplicantEdit(ICustomUGApplicant):
    """An undergraduate applicant interface for edit forms.

    Here we can repeat the fields from base data and set the
    `required` and `readonly` attributes to True to further restrict
    the data access. Or we can allow only certain certificates to be
    selected by choosing the appropriate source.

    We cannot omit fields here. This has to be done in the
    respective form page.
    """

    email = schema.ASCIILine(
        title = _(u'Email Address'),
        required = True,
        constraint=validate_email,
        )
    date_of_birth = FormattedDate(
        title = _(u'Date of Birth'),
        required = True,
        show_year = True,
        )

ICustomUGApplicantEdit[
    'date_of_birth'].order = ICustomUGApplicant['date_of_birth'].order
ICustomUGApplicantEdit[
    'email'].order = ICustomUGApplicant['email'].order

class ICustomPGApplicantEdit(INigeriaPGApplicantEdit):
    """A postgraduate applicant interface for editing.

    Here we can repeat the fields from base data and set the
    `required` and `readonly` attributes to True to further restrict
    the data access. Or we can allow only certain certificates to be
    selected by choosing the appropriate source.

    We cannot omit fields here. This has to be done in the
    respective form page.
    """

    referees = schema.List(
        title = _(u'Referees'),
        value_type = RefereeEntryField(),
        required = False,
        defaultFactory=list,
        )

ICustomPGApplicantEdit[
    'referees'].order =  INigeriaPGApplicantEdit['emp2_reason'].order

class ICustomApplicantOnlinePayment(INigeriaApplicantOnlinePayment):
    """An applicant payment via payment gateways.

    """

class IPUTMEApplicantEdit(ICustomUGApplicant):
    """An undergraduate applicant interface for editing.

    Here we can repeat the fields from base data and set the
    `required` and `readonly` attributes to True to further restrict
    the data access. Or we can allow only certain certificates to be
    selected by choosing the appropriate source.

    We cannot omit fields here. This has to be done in the
    respective form page.
    """

    email = schema.ASCIILine(
        title = _(u'Email Address'),
        required = True,
        constraint=validate_email,
        )
    date_of_birth = FormattedDate(
        title = _(u'Date of Birth'),
        required = True,
        show_year = True,
        )
    nationality = schema.Choice(
        source = nats_vocab,
        title = _(u'Nationality'),
        required = True,
        )

IPUTMEApplicantEdit[
    'date_of_birth'].order =  ICustomUGApplicant['date_of_birth'].order
IPUTMEApplicantEdit[
    'email'].order =  ICustomUGApplicant['email'].order
IPUTMEApplicantEdit[
    'nationality'].order =  ICustomUGApplicant['nationality'].order

class ICustomApplicantUpdateByRegNo(INigeriaApplicantUpdateByRegNo):
    """Representation of an applicant.

    Skip regular reg_number validation if reg_number is used for finding
    the applicant object.
    """