#!/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 Requests.
"""

__authors__ = [
    '"Sverre Rabbelier" <sverre@rabbelier.nl>',
    '"Lennard de Rijk" <ljvderijk@gmail.com>',
    '"Pawel Solyga" <pawel.solyga@gmail.com>',
  ]


from google.appengine.api import users

from django import forms
from django.utils.translation import ugettext_lazy

from soc.logic import dicts
from soc.logic.models import sponsor as sponsor_logic
from soc.logic.models import user as user_logic
from soc.views import helper
from soc.views import out_of_band
from soc.views.helper import access
from soc.views.helper import decorators
from soc.views.helper import redirects
from soc.views.models import base

import soc.models.request
import soc.logic.models.request
import soc.logic.dicts
import soc.views.helper
import soc.views.helper.lists
import soc.views.helper.responses
import soc.views.helper.widgets


class CreateForm(helper.forms.BaseForm):
  """Django form displayed when Developer creates a Request.
  """

  class Meta:
    """Inner Meta class that defines some behavior for the form.
    """
    model = soc.models.request.Request

    #: list of model fields which will *not* be gathered by the form
    exclude = ['scope', 'scope_path', 'link_id', 'role', 'declined']

  role = forms.CharField(widget=helper.widgets.ReadOnlyInput())

  user = forms.CharField(
      label=soc.models.request.Request.link_id.verbose_name,
      help_text=soc.models.request.Request.link_id.help_text,
      widget=helper.widgets.ReadOnlyInput())

  group = forms.CharField(
      label=soc.models.request.Request.scope.verbose_name,
      help_text=soc.models.request.Request.scope.help_text,
      widget=helper.widgets.ReadOnlyInput())

  def clean_user(self):
    self.cleaned_data['requester'] =  user_logic.logic.getForFields(
        {'link_id': self.cleaned_data['user']}, unique=True)
    return self.cleaned_data['user']

  def clean_group(self):
    self.cleaned_data['to'] = sponsor_logic.logic.getFromFields(
        link_id=self.cleaned_data['group'])
    return self.cleaned_data['group']


class EditForm(CreateForm):
  """Django form displayed when Developer edits a Request.
  """

  pass


class View(base.View):
  """View methods for the Docs 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['listSelf'] = [access.checkIsUser]
    rights['create'] = [access.checkCanInvite]

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

    new_params['name'] = "Request"

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

    new_params['sidebar_defaults'] = [('/%s/list', 'List %(name_plural)s', 'list')]

    new_params['save_message'] = [ugettext_lazy('Request saved.')]

    params = dicts.merge(params, new_params)

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

  @decorators.merge_params
  @decorators.check_access
  def listSelf(self, request, access_type,
               page_name=None, params=None, **kwargs):
    """Displays the unhandled requests for this user.

    Args:
      request: the standard Django HTTP request object
      page_name: the page name displayed in templates as page and header title
      params: a dict with params for this View
      kwargs: not used
    """

    # get the current user
    properties = {'account': users.get_current_user()}
    user_entity = user_logic.logic.getForFields(properties, unique=True)

    # construct the Unhandled Requests list

    # only select the requests for this user that haven't been handled yet
    filter = {'link_id': user_entity.link_id,
              'group_accepted' : True}

    uh_params = params.copy()
    uh_params['list_action'] = (redirects.inviteAcceptedRedirect, None)
    uh_params['list_description'] = ugettext_lazy(
        "An overview of your unhandled requests.")

    uh_list = helper.lists.getListContent(
        request, uh_params, filter, 0)

    # construct the Open Requests list

    # only select the requests for the user
    # that haven't been accepted by an admin yet
    filter = {'link_id' : user_entity.link_id,
              'group_accepted' : False}

    ar_params = params.copy()
    ar_params['list_description'] = ugettext_lazy(
        "List of your pending requests.")

    ar_list = helper.lists.getListContent(
        request, ar_params, filter, 1)

    # fill contents with all the needed lists
    contents = [uh_list, ar_list]

    # call the _list method from base to display the list
    return self._list(request, params, contents, page_name)

  def _editSeed(self, request, seed):
    """See base.View._editGet().
    """

    # fill in the email field with the data from the entity
    seed['user'] = seed['link_id']
    seed['group'] = seed['scope_path']

  def _editGet(self, request, entity, form):
    """See base.View._editGet().
    """

    # fill in the email field with the data from the entity
    form.fields['user'].initial = entity.link_id
    form.fields['group'].initial = entity.scope_path

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

  def _editPost(self, request, entity, fields):
    """See base.View._editPost().
    """

    # fill in the account field with the user created from email
    fields['link_id'] = fields['requester'].link_id
    fields['scope_path'] = fields['to'].link_id
    fields['scope'] = fields['to']

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


view = View()

create = view.create
edit = view.edit
delete = view.delete
list = view.list
list_self = view.listSelf
public = view.public
export = view.export