#!/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 editing and examining User profiles.

"""

__authors__ = [

  '"Pawel Solyga" <pawel.solyga@gmail.com>',

  ]

import re

from google.appengine.api import users

from django import http

from django import shortcuts

from django import newforms as forms

from soc.logic.site import id_user

from soc.views.helpers import forms_helpers

from soc.views.helpers import response_helpers

import soc.models.user

class UserForm(forms_helpers.DbModelForm):

  """Django form displayed when creating or editing a User.

  """

  LINKNAME_PATTERN = r'''(?x)

      ^

      [0-9a-z]  # start with ASCII digit or lowercase

      (

      [0-9a-z]  # additional ASCII digit or lowercase

      |         # -OR-

      _[0-9a-z] # underscore and ASCII digit or lowercase

      )*        # zero or more of OR group

      $'''

  LINKNAME_REGEX = re.compile(LINKNAME_PATTERN)

  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.user.User

    #: list of model fields which will *not* be gathered by the form

    exclude = ['id']

  def clean_link_name(self):

    linkname = self.cleaned_data.get('link_name')

    linkname_user = id_user.getUserFromLinkName(linkname)

    id = users.get_current_user()

    # if linkname exist in datastore and doesn't belong to current user

    if linkname_user and (linkname_user.id != id):

      raise forms.ValidationError("This link name is already in use.")

    elif not self.LINKNAME_REGEX.match(linkname):

      raise forms.ValidationError("This link name is in wrong format.")

    return linkname

  Args:

    request: the standard django request object.

    linkname: the User's site-unique "linkname" extracted from the URL

    template: the template path to use for rendering the template.

  Returns:

    A subclass of django.http.HttpResponse which either contains the form to

    be filled out, or a redirect to the correct view in the interface.

  """

  if request.method == 'POST':

    form = UserForm(request.POST)

    if form.is_valid():

      linkname = form.cleaned_data.get('link_name')

      nickname = form.cleaned_data.get("nick_name")

      if not user:

                                    nick_name=nickname)

      else:

        user.nick_name = nickname

        user.link_name = linkname