#!/usr/bin/python2.5
#
# Copyright 2008 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 Site Settings.
"""

__authors__ = [
    '"Sverre Rabbelier" <sverre@rabbelier.nl>',
  ]


from django import forms

from soc.logic import dicts
from soc.views.helper import access
from soc.views.models import document as document_view
from soc.views.models import presence

import soc.models.site
import soc.logic.models.site
import soc.logic.dicts


class CreateForm(presence.SettingsValidationForm):
  """Django form displayed when creating or editing Site Settings.
  """

  class Meta:
    """Inner Meta class that defines some behavior for the form.
    """
    #: db.Model subclass for which the form will gather information
    model = soc.models.site.Site

    #: list of model fields which will *not* be gathered by the form
    exclude = ['scope', 'scope_path', 'link_id',
      # TODO(tlarsen): this needs to be enabled once a button to a list
      #   selection "interstitial" page is implemented, see:
      #     http://code.google.com/p/soc/issues/detail?id=151
      'home', 'tos']

  link_id = forms.CharField(widget=forms.HiddenInput)


class EditForm(CreateForm):
  """Django form displayed a Document is edited.
  """

  pass


class View(presence.View):
  """View methods for the Document 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 = {}
    rights['unspecified'] = [access.checkIsDeveloper]
    rights['any_access'] = [access.allow]
    rights['show'] = [access.allow]

    new_params = {}
    new_params['logic'] = soc.logic.models.site.logic
    new_params['rights'] = rights

    new_params['name'] = "Site Settings"
    new_params['name_short'] = "Site"
    new_params['url_name'] = "site/settings"
    new_params['module_name'] = "site"

    new_params['edit_form'] = EditForm
    new_params['create_form'] = CreateForm

    new_params['sidebar_defaults'] = [('/%s/edit', 'Edit %(name)s', 'edit')]
    new_params['sidebar_heading'] = new_params['name_short']

    new_params['public_template'] = 'soc/home/public.html'

    patterns = []

    page_name = "Home Page"
    patterns += [(r'^$', 'soc.views.models.%(module_name)s.main_public', 
                  page_name)]

    page_name = "Edit Site"
    patterns += [(r'^%(url_name)s/(?P<access_type>edit)$',
                  'soc.views.models.%(module_name)s.main_edit',
                  page_name)]

    new_params['extra_django_patterns'] = patterns

    params = dicts.merge(params, new_params)

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

  def getSidebarMenus(self, request, params=None):
    """See base.View.getSidebarMenus.

    Returns a custom sidebar entry for the 'site' singleton.
    """

    entity = self._logic.getFromFields(link_id=self._logic.DEF_SITE_LINK_ID)

    submenus = []

    if entity:
      submenus = document_view.view.getMenusForScope(entity, self._params)

    new_params = {}
    new_params['sidebar_additional'] = submenus

    params = dicts.merge(params, new_params)
    return super(View, self).getSidebarMenus(request, params=params)

  def mainPublic(self, request, page_name=None, **kwargs):
    """Displays the main site settings page.

    Args:
      request: the standard Django HTTP request object
      page_name: the page name displayed in templates as page and header title
      kwargs: not used
    """

    keys = self._logic.getKeyFieldNames()

    # No entity in this case, since Site key values are hard-coded for the
    # Site singleton, so pass in None to match parent method footprint.
    values = self._logic.getKeyValues(None)
    key_values = dicts.zip(keys, values)

    return self.public(request, "show", page_name, **key_values)

  def mainEdit(self, request, page_name=None, **kwargs):
    """Displays the edit page for the main site settings page.

    Args:
      request: the standard Django HTTP request object
      page_name: the page name displayed in templates as page and header title
      kwargs: not used
    """

    keys = self._logic.getKeyFieldNames()

    # No entity in this case, since Site key values are hard-coded for the
    # Site singleton, so pass in None to match parent method footprint.
    values = self._logic.getKeyValues(None)
    key_values = dicts.zip(keys, values)
    
    return self.edit(request, "edit", page_name, seed=key_values, **key_values)


view = View()

create = view.create
edit = view.edit
delete = view.delete
list = view.list
public = view.public
export = view.export
main_public = view.mainPublic
main_edit = view.mainEdit