#!/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 import validate

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 widgets

from soc.views.models import base

from soc.views.models import role as role_view

import soc.models.request

import soc.logic.models.request

import soc.logic.dicts

import soc.views.helper

import soc.views.helper.widgets

class CreateForm(helper.forms.BaseForm):

  """Django form displayed when Developer creates a Request.

  """

  class Meta:

    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, original_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:

      original_params: a dict with params for this View

    """

    self._logic = soc.logic.models.request.logic

    params = {}

    params['name'] = "Request"

    params['name_short'] = "Request"

    params['name_plural'] = "Requests"

    params['url_name'] = "request"

    params['module_name'] = "request"

    params['edit_form'] = EditForm

    params['create_form'] = CreateForm

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

    params['delete_redirect'] = '/' + params['url_name'] + '/list'

    params['create_redirect'] = '/' + params['url_name']

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

    params = dicts.merge(original_params, params)

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

  def listSelf(self, request, 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

    """

    try:

      self.checkAccess('list', request)

    except out_of_band.Error, error:

      return error.response(request)

    params = dicts.merge(params, self._params)

    # 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'] = (self.inviteAcceptedRedirect, None)

    uh_params['list_description'] = ugettext_lazy(

        "An overview of your unhandled requests")

    # 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(

        "An overview of your requests, that haven't been handled by an admin yet")

    # 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 inviteAcceptedRedirect(self, entity, _):

    """Returns the redirect for accepting a request

    """

    return '/%s/create/%s/%s' % (

        entity.role, entity.scope_path, entity.link_id)

  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

  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']

view = View()

create = view.create

edit = view.edit

delete = view.delete

list = view.list

list_self = view.listSelf

public = view.public