# -*- coding: utf-8 -*-

#

# Copyright IRI (c) 2013

#

# contact@iri.centrepompidou.fr

#

# This software is governed by the CeCILL-B license under French law and

# abiding by the rules of distribution of free software.  You can  use, 

# modify and/ or redistribute the software under the terms of the CeCILL-B

# license as circulated by CEA, CNRS and INRIA at the following URL

# "http://www.cecill.info". 

#

# As a counterpart to the access to the source code and  rights to copy,

# modify and redistribute granted by the license, users are provided only

# with a limited warranty  and the software's author,  the holder of the

# economic rights,  and the successive licensors  have only  limited

# liability. 

#

# In this respect, the user's attention is drawn to the risks associated

# with loading,  using,  modifying and/or developing or reproducing the

# software by the user in light of its specific status of free software,

# that may mean  that it is complicated to manipulate,  and  that  also

# therefore means  that it is reserved for developers  and  experienced

# professionals having in-depth computer knowledge. Users are therefore

# encouraged to load and test the software's suitability as regards their

# requirements in conditions enabling the security of their systems and/or 

# data to be ensured and,  more generally, to use and operate it in the 

# same conditions as regards security. 

#

# The fact that you are presently reading this means that you have had

# knowledge of the CeCILL-B license and that you accept its terms.

#

from django.conf import settings

from django.contrib.auth import get_user_model

from django.contrib.auth.forms import (UserChangeForm as AuthUserChangeForm, 

    UserCreationForm as AuthUserCreationForm)

from django.core.exceptions import ValidationError

from django.forms.fields import ChoiceField

from django.utils.translation import ugettext as _

User = get_user_model()

class UserCreationform(AuthUserCreationForm):

    class Meta:

        model = User

    def clean_username(self):

        # Since User.username is unique, this check is redundant,

        # but it sets a nicer error message than the ORM. See #13147.

        username = self.cleaned_data["username"]

        try:

            User.objects.get(username=username)

        except User.DoesNotExist:

            return username

        raise ValidationError(self.error_messages['duplicate_username'])    

class UserChangeForm(AuthUserChangeForm):

    language = ChoiceField(label=_("language"), choices=[(k,_(v)) for k,v in settings.LANGUAGES], initial=settings.LANGUAGE_CODE[:2])

    class Meta:

        model = User