#!/usr/bin/python2.5

#

# Copyright 2009 the Melange authors.

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

#   http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

"""Views for Student.

"""

__authors__ = [

    '"Lennard de Rijk" <ljvderijk@gmail.com>'

  ]

from django import forms

from django.utils.translation import ugettext

from soc.logic import cleaning

from soc.logic import dicts

from soc.logic.models import program as program_logic

from soc.logic.models import student as student_logic

from soc.logic.models import user as user_logic

from soc.views.helper import access

from soc.views.helper import decorators

from soc.views.helper import dynaform

from soc.views.helper import redirects

from soc.views.helper import widgets

from soc.views.models import program as program_view

from soc.views.models import role

import soc.logic.models.student

class View(role.View):

  """View methods for the Student model.

  """

  def __init__(self, params=None):

    """Defines the fields and methods required for the base View class

    to provide the user with list, public, create, edit and delete views.

    Params:

      params: a dict with params for this View

    """

    rights = access.Checker(params)

    rights['create'] = ['checkIsDeveloper']

    rights['edit'] = [('checkHasActiveRoleForScope', student_logic.logic)]

    rights['delete'] = ['checkIsDeveloper']

    rights['apply'] = [

        'checkIsUser',

        ('checkIsActivePeriod', ['student_signup', 'scope_path']),

        'checkIsNotParticipatingInProgramInScope',

        ]

    rights['manage'] = [

        ('checkIsAllowedToManageRole', [soc.logic.models.host.logic,

             soc.logic.models.org_admin.logic])]

    new_params = {}

    new_params['logic'] = soc.logic.models.student.logic

    new_params['group_logic'] = program_logic.logic

    new_params['group_view'] = program_view.view

    new_params['rights'] = rights

    new_params['scope_view'] = program_view

    new_params['scope_redirect'] = redirects.getCreateRedirect

    new_params['manage_redirect'] = redirects.getUserRolesRedirect

    new_params['name'] = "Student"

    new_params['module_name'] = "student"

    new_params['sidebar_grouping'] = 'Students'

    # add apply pattern

    patterns = [(r'^%(url_name)s/(?P<access_type>apply)/%(scope)s$',

        'soc.views.models.%(module_name)s.apply',

        'Become a %(name)s'),]

    new_params['extra_django_patterns'] = patterns

    new_params['extra_dynaexclude'] = ['agreed_to_tos', 'school']

    new_params['create_dynafields'] = [

        {'name': 'scope_path',

         'base': forms.fields.CharField,

         'widget': forms.HiddenInput,

         'required': True,

         },

        {'name': 'student_agreement',

         'base': forms.fields.CharField,

         'required': False,

         'widget': widgets.AgreementField,

         'group': ugettext("5. Terms of Service"),

         },

        {'name': 'agreed_to_student_agreement',

         'base': forms.fields.BooleanField,

         'initial': False,

         'required':True,

         'label': ugettext('I agree to the Student Agreement'),

         'group': ugettext("5. Terms of Service"),

         },

        ]

    new_params['show_in_roles_overview'] = True

    params = dicts.merge(params, new_params)

    super(View, self).__init__(params=params)

    # create and store the special form for users

    updated_fields = {

        'link_id': forms.CharField(widget=forms.HiddenInput,

            required=True),

        'clean_link_id': cleaning.clean_user_is_current('link_id')

        }

    user_create_form = dynaform.extendDynaForm(

        dynaform = self._params['create_form'],

        dynaproperties = updated_fields)

    self._params['user_create_form'] = user_create_form

  @decorators.merge_params

  @decorators.check_access

  def apply(self, request, access_type,

           page_name=None, params=None, **kwargs):

    """Handles student role creation for the current user.

    """

    user_entity = user_logic.logic.getForCurrentAccount()

    params['create_form'] = params['user_create_form']

    return self.create(request, access_type='unspecified', page_name=page_name,

        params=params, link_id=user_entity.link_id, **kwargs)

  def _editPost(self, request, entity, fields):

    """See base.View._editPost().

    """

    if not entity:

      fields['user'] = fields['link_id']

      fields['link_id'] = fields['user'].link_id

    fields['agreed_to_tos'] = fields['agreed_to_student_agreement']

    super(View, self)._editPost(request, entity, fields)

  def _editGet(self, request, entity, form):

    """Sets the content of the agreed_to_tos_on field and replaces.

    Also replaces the agreed_to_tos field with a hidden field when the ToS has been signed.

    For params see base.View._editGet().

    """

    if entity.agreed_to_tos:

      form.fields['agreed_to_student_agreement'] = forms.fields.BooleanField(

          widget=forms.HiddenInput, initial=entity.agreed_to_tos,

          required=True)

    super(View, self)._editGet(request, entity, form)

  def _editContext(self, request, context):

    """See base.View._editContext().

    """

    entity = context['entity']

    form = context['form']

    if 'scope_path' in form.initial:

      scope_path = form.initial['scope_path']

    elif 'scope_path' in request.POST:

      # TODO do this nicely

      scope_path = request.POST['scope_path']

    else:

      # TODO is this always sufficient?

      form.fields['student_agreement'] = None

      return

    program = program_logic.logic.getFromKeyName(scope_path)

    if not (program and program.student_agreement):

      return

    content = program.student_agreement.content

    form.fields['student_agreement'].widget.text = content

view = View()

apply = view.apply

create = view.create

delete = view.delete

edit = view.edit

list = view.list

manage = view.manage

public = view.public

export = view.export