##
## browser.py
## Login : <uli@pu.smp.net>
## Started on  Sun Jun 27 11:03:10 2010 Uli Fouquet
## $Id$
##
## Copyright (C) 2010 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
##
"""UI components for basic applicants and related components.
"""
import grok

from datetime import datetime
from hurry.jquery import jquery
from hurry.jqueryui import jqueryui
from zope.component import getUtility, createObject
from zope.formlib.sequencewidget import (
    ListSequenceWidget, SequenceDisplayWidget)
from zope.formlib.widget import CustomWidgetFactory
from zope.formlib.widgets import FileWidget, DateWidget
from zope.securitypolicy.interfaces import IPrincipalRoleManager

from waeup.sirp.browser import (
    WAeUPPage, WAeUPEditFormPage, WAeUPAddFormPage,
    WAeUPDisplayFormPage, NullValidator)
from waeup.sirp.browser.breadcrumbs import Breadcrumb
from waeup.sirp.browser.pages import LoginPage
from waeup.sirp.browser.resources import datepicker, tabs, datatable
from waeup.sirp.browser.viewlets import (
    AddActionButton, ManageActionButton, PrimaryNavTab,
    )
from waeup.sirp.image.browser.widget import (
    ThumbnailWidget, EncodingImageFileWidget,
    )
from waeup.sirp.interfaces import IWAeUPObject
from waeup.sirp.utils.helpers import ReST2HTML
from waeup.sirp.widgets.passportwidget import (
    PassportWidget, PassportDisplayWidget
    )
from waeup.sirp.widgets.datewidget import (
    FriendlyDateWidget, FriendlyDateDisplayWidget)
from waeup.sirp.widgets.restwidget import ReSTWidget
from waeup.sirp.widgets.objectwidget import (
    WAeUPObjectWidget, WAeUPObjectDisplayWidget)
from waeup.sirp.widgets.multilistwidget import (
    MultiListWidget, MultiListDisplayWidget)

from waeup.sirp.applicants import get_applicant_data, ResultEntry, Applicant
from waeup.sirp.applicants.interfaces import (
    IApplicant, IApplicantPrincipal, IApplicantPDEEditData,
    IApplicantsRoot, IApplicantsContainer, IApplicantsContainerProvider,
    IApplicantsContainerAdd
    )

results_widget = CustomWidgetFactory(
    WAeUPObjectWidget, ResultEntry)

results_display_widget = CustomWidgetFactory(
    WAeUPObjectDisplayWidget, ResultEntry)

list_results_widget = CustomWidgetFactory(
    MultiListWidget, subwidget=results_widget)

list_results_display_widget = CustomWidgetFactory(
    MultiListDisplayWidget, subwidget=results_display_widget)

class ApplicantsRootPage(WAeUPPage):
    grok.context(IApplicantsRoot)
    grok.name('index')
    title = 'Applicants'
    label = 'Application Section'
    pnav = 3

    def update(self):
        super(ApplicantsRootPage, self).update()
        datatable.need()
        return

class ManageApplicantsRootActionButton(ManageActionButton):
    grok.context(IApplicantsRoot)
    grok.view(ApplicantsRootPage)
    grok.require('waeup.manageUniversity')
    text = 'Manage application section'

class ApplicantsRootManageFormPage(WAeUPEditFormPage):
    grok.context(IApplicantsRoot)
    grok.name('manage')
    grok.template('applicantsrooteditpage')
    title = 'Applicants'
    label = 'Manage application section'
    pnav = 3
    grok.require('waeup.manageUniversity')
    taboneactions = ['Add applicants container', 'Remove selected','Cancel']
    subunits = 'Applicants Containers'

    def update(self):
        tabs.need()
        #warning.need()
        return super(ApplicantsRootManageFormPage, self).update()

    # ToDo: Show warning message before deletion
    @grok.action('Remove selected')
    def delApplicantsContainers(self, **data):
        form = self.request.form
        child_id = form['val_id']
        if not isinstance(child_id, list):
            child_id = [child_id]
        deleted = []
        for id in child_id:
            try:
                del self.context[id]
                deleted.append(id)
            except:
                self.flash('Could not delete %s: %s: %s' % (
                        id, sys.exc_info()[0], sys.exc_info()[1]))
        if len(deleted):
            self.flash('Successfully removed: %s' % ', '.join(deleted))
        self.redirect(self.url(self.context, '@@manage')+'#tab-1')
        return

    @grok.action('Add applicants container', validator=NullValidator)
    def addApplicantsContainer(self, **data):
        self.redirect(self.url(self.context, '@@add'))
        return

    @grok.action('Cancel', validator=NullValidator)
    def cancel(self, **data):
        self.redirect(self.url(self.context))
        return

class ApplicantsContainerAddFormPage(WAeUPAddFormPage):
    grok.context(IApplicantsRoot)
    grok.require('waeup.manageUniversity')
    grok.name('add')
    grok.template('applicantscontaineraddformpage')
    title = 'Applicants'
    label = 'Add applicants container'
    pnav = 3

    form_fields = grok.AutoFields(IApplicantsContainerAdd)
    form_fields['startdate'].custom_widget = FriendlyDateDisplayWidget('le')
    form_fields['enddate'].custom_widget = FriendlyDateDisplayWidget('le')
    form_fields['description'].custom_widget = ReSTWidget

    @grok.action('Add applicants container')
    def addApplicantsContainer(self, **data):
        if data['code'] in self.context.keys():
            self.status = Invalid('The name chosen already exists '
                                  'in the database')
            return
        # Add new applicants container...
        provider = getUtility(IApplicantsContainerProvider,
                              name=getattr(data['provider'],
                                   'grokcore.component.directive.name'))
        container = provider.factory()
        self.applyData(container, **data)
        self.context[data['code']] = container
        self.flash('Added "%s".' % data['code'])
        self.redirect(self.url(self.context, u'@@manage')+'#tab-1')
        return

    @grok.action('Cancel')
    def cancel(self, **data):
        self.redirect(self.url(self.context))

class ApplicantsRootBreadcrumb(Breadcrumb):
    """A breadcrumb for applicantsroot.
    """
    grok.context(IApplicantsRoot)
    title = u'Applicants'

class ApplicantsContainerBreadcrumb(Breadcrumb):
    """A breadcrumb for applicantscontainers.
    """
    grok.context(IApplicantsContainer)

class ApplicantsTab(PrimaryNavTab):
    """Faculties-tab in primary navigation.
    """

    grok.context(IWAeUPObject)
    grok.order(3)
    grok.require('waeup.manageUniversity')
    grok.template('primarynavtab')

    pnav = 3
    tab_title = u'Applicants'

    @property
    def link_target(self):
        return self.view.application_url('applicants')

class ApplicantsContainerPage(WAeUPDisplayFormPage):
    """The standard view for regular applicant containers.
    """
    grok.context(IApplicantsContainer)
    grok.name('index')
    grok.template('applicantscontainerpage')
    pnav = 3

    form_fields = grok.AutoFields(IApplicantsContainer)
    # Use friendlier date widget...
    form_fields['startdate'].custom_widget = FriendlyDateDisplayWidget('le')
    form_fields['enddate'].custom_widget = FriendlyDateDisplayWidget('le')
    form_fields['description'].custom_widget = ReSTWidget

    @property
    def title(self):
        return "Applicants Container: %s" % getattr(
            self.context, '__name__', 'unnamed')

    @property
    def label(self):
        return self.title


class ManageApplicantsContainerActionButton(ManageActionButton):
    grok.context(IApplicantsContainer)
    grok.view(ApplicantsContainerPage)
    text = 'Manage applicants container'


class ManageApplicantsContainer(WAeUPEditFormPage):
    grok.context(IApplicantsContainer)
    grok.name('manage')
    grok.template('form_manage_applicants_container')
    form_fields = grok.AutoFields(IApplicantsContainer)
    # Use friendlier date widget...
    form_fields['startdate'].custom_widget = FriendlyDateWidget('le')
    form_fields['enddate'].custom_widget = FriendlyDateWidget('le')

    @property
    def title(self):
        return "Manage applicants container: %s" % getattr(
            self.context, '__name__', 'unnamed')

    @property
    def label(self):
        return self.title

    pnav = 3

    def update(self):
        datepicker.need() # Enable jQuery datepicker in date fields.
        tabs.need()
        datatable.need()  # Enable jQurey datatables for contents listing
        return super(ManageApplicantsContainer, self).update()

    @grok.action('Save')
    def apply(self, **data):
        self.applyData(self.context, **data)
        self.flash('Data saved.')
        return

    @grok.action('Back')
    def cancel(self, **data):
        self.redirect(self.url(self.context))
        return

class LoginApplicant(WAeUPPage):
    grok.context(IApplicantsContainer)
    grok.name('login')
    grok.require('zope.Public')

    title = u'Login'

    @property
    def label(self):
        return self.title

    pnav = 3
    prefix = u'APP'

    def update(self, SUBMIT=None):
        self.ac_series = self.request.form.get('form.ac_series', None)
        self.ac_number = self.request.form.get('form.ac_number', None)
        if SUBMIT is None:
            return

        if self.request.principal.id == 'zope.anybody':
            self.flash('Entered credentials are invalid')
            return

        if not IApplicantPrincipal.providedBy(self.request.principal):
            # Don't care if user is already authenticated as non-applicant
            return

        pin = self.request.principal.access_code
        if pin not in self.context.keys():
            # Create applicant record
            applicant = Applicant()
            applicant.access_code = pin
            self.context[pin] = applicant

        # Assign current principal the owner role on created applicant
        # record
        role_manager = IPrincipalRoleManager(self.context)
        role_manager.assignRoleToPrincipal(
            'waeup.local.ApplicationOwner', self.request.principal.id)
        self.redirect(self.url(self.context[pin], 'edit'))
        return

class DisplayApplicant(WAeUPDisplayFormPage):
    grok.context(IApplicant)
    grok.name('index')
    grok.require('waeup.viewApplication')
    form_fields = grok.AutoFields(IApplicant).omit('locked')
    form_fields['fst_sit_results'].custom_widget = list_results_display_widget
    form_fields['passport'].custom_widget = ThumbnailWidget
    form_fields['date_of_birth'].custom_widget = FriendlyDateDisplayWidget('le')
    label = 'Applicant'
    title = 'Applicant'
    pnav = 3

class EditApplicantStudent(WAeUPEditFormPage):
    """An applicant-centered edit view for applicant data.
    """
    grok.context(IApplicant)
    grok.name('edit')
    grok.require('waeup.editApplication')
    form_fields = grok.AutoFields(IApplicantPDEEditData).omit('locked')
    form_fields['passport'].custom_widget = EncodingImageFileWidget
    form_fields['date_of_birth'].custom_widget = FriendlyDateWidget('le-year')
    grok.template('form_edit_pde')

    def emitLockMessage(self):
        self.flash('The requested form is locked (read-only)')
        self.redirect(self.url(self.context))
        return

    def update(self):
        if self.context.locked:
            self.emitLockMessage()
            return
        datepicker.need() # Enable jQuery datepicker in date fields.
        super(EditApplicantStudent, self).update()
        return

    def filteredWidgets(self):
        for widget in self.widgets:
            if widget.name == 'form.confirm_passport':
                continue
            yield widget

    @property
    def label(self):
        # XXX: Use current/upcoming session
        return 'Apply for Post UDE Screening Test (2009/2010)'
    title = 'Edit Application'
    pnav = 3

    @grok.action('Save')
    def save(self, **data):
        if self.context.locked:
            self.emitLockMessage()
            return
        self.applyData(self.context, **data)
        self.context._p_changed = True
        return

    @grok.action('Final Submit')
    def finalsubmit(self, **data):
        if self.context.locked:
            self.emitLockMessage()
            return
        self.applyData(self.context, **data)
        self.context._p_changed = True
        if not self.dataComplete():
            self.flash('Data yet not complete.')
            return
        self.context.locked = True
        return

    def dataComplete(self):
        if context.confirm_passport is not True:
            return False
        if len(self.errors) > 0:
            return False
        return True

class EditApplicantFull(WAeUPEditFormPage):
    """A full edit view for applicant data.

    This one is meant to be used by officers only.
    """
    grok.context(IApplicant)
    grok.name('edit_full')
    grok.require('waeup.editFullApplication')
    form_fields = grok.AutoFields(IApplicantPDEEditData).omit('locked')
    form_fields['passport'].custom_widget = EncodingImageFileWidget
    form_fields['date_of_birth'].custom_widget = FriendlyDateWidget('le-year')
    grok.template('form_edit_full')

    def update(self):
        if self.context.locked:
            self.emitLockMessage()
            return
        datepicker.need() # Enable jQuery datepicker in date fields.
        super(EditApplicantFull, self).update()
        return

    def filteredWidgets(self):
        for widget in self.widgets:
            if widget.name == 'form.confirm_passport':
                continue
            yield widget

    @property
    def label(self):
        return 'Application for %s' % self.context.access_code
    title = 'Edit Application'
    pnav = 3

    @grok.action('Save')
    def save(self, **data):
        self.applyData(self.context, **data)
        self.context._p_changed = True
        return