from django import forms

from django.contrib.auth.models import User, Permission, Group

from django.forms.util import ErrorList

from django.contrib.auth.forms import UserCreationForm

from django.utils.translation import gettext as _

from models import ldt, IriGroup

from ldt.management import get_content_type_list

class ldtForm(UserCreationForm):

    class Meta:

        model = ldt

    def __init__(self, data=None, files=None, auto_id='id_%s', prefix=None,

                 initial=None, error_class=ErrorList, label_suffix=':',

                 empty_permitted=False, instance=None):

        if instance:

            initial = initial or {}           

        super(ldtForm, self).__init__(data, files, auto_id, prefix, 

            initial, error_class, label_suffix, empty_permitted, instance)

        # filtre les permissions necessaires

        content_type_list = get_content_type_list()

        self.fields['user_permissions'].queryset = Permission.objects.filter(content_type__in = content_type_list)

        if instance:

            self.fields['password1'].required = False

            self.fields['password1'].label = _('New password')

            self.fields['password2'].required = False

            self.fields['password2'].label = _('New password confirmation')

        self._password_change = True

    def clean_username(self):

        if self.instance:

            return self.cleaned_data['username']

        return super(ldtForm, self).clean_username()

    def clean_password2(self): 

        if self.instance and self.cleaned_data['password1'] == '' and self.cleaned_data['password2'] == '':

            self._password_change = False

            return u''

        return super(ldtForm, self).clean_password2()

    def save(self, commit=True):

        Super = self._password_change and ldtForm  or UserCreationForm  

        user = super(Super, self).save(commit=False)

        # if user.pk != None:

            # self.save_m2m()

        if commit:

            user.save()

        return user

class IriGroupForm(forms.ModelForm):

    class meta:

        model = IriGroup

    def __init__(self, data=None, files=None, auto_id='id_%s', prefix=None,

                 initial=None, error_class=ErrorList, label_suffix=':',

                 empty_permitted=False, instance=None):

        if instance:

            initial = initial or {}                               

        super(IriGroupForm, self).__init__(data, files, auto_id, prefix, 

            initial, error_class, label_suffix, empty_permitted, instance)

        # filtre les permissions necessaires

        content_type_list = get_content_type_list()

        self.fields['permissions'].queryset = Permission.objects.filter(content_type__in = content_type_list)

class EmailChangeForm(forms.Form):

    email1 = forms.EmailField(label=_("E-mail"), max_length=75)

    email2 = forms.EmailField(label=_("E-mail"), max_length=75)

    def __init__(self, user=None, *args, **kwargs):

        self.user = user

        super(EmailChangeForm, self).__init__(*args, **kwargs)

    def clean_email2(self):

        email1 = self.cleaned_data.get('email1')

        email2 = self.cleaned_data.get('email2')

        if email1 and email2:

            if email1 != email2:

                raise forms.ValidationError(_("The two emails didn't match."))

        return email2

    def save(self):

        self.user.email=self.cleaned_data['email1']

        self.user.save()

        return self.user