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# Copyright 2011-2012 GRNET S.A. All rights reserved.

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from django.utils.http import int_to_base36

from django.core.urlresolvers import reverse

from django.utils.functional import lazy

from astakos.im.models import AstakosUser, Invitation

from astakos.im.settings import INVITATIONS_PER_LEVEL, DEFAULT_FROM_EMAIL, BASEURL, SITENAME, RECAPTCHA_PRIVATE_KEY, DEFAULT_CONTACT_EMAIL, RECAPTCHA_ENABLED

class LocalUserCreationForm(UserCreationForm):

    """

    Extends the built in UserCreationForm in several ways:

    * Adds email, first_name, last_name, recaptcha_challenge_field, recaptcha_response_field field.

    * The username field isn't visible and it is assigned a generated id.

    """

    recaptcha_challenge_field = forms.CharField(widget=DummyWidget)

    recaptcha_response_field = forms.CharField(widget=RecaptchaWidget, label='')

    class Meta:

        model = AstakosUser

        fields = ("email", "first_name", "last_name", "has_signed_terms")

        widgets = {"has_signed_terms":ApprovalTermsWidget(terms_uri=reverse_lazy('latest_terms'))}

    def __init__(self, *args, **kwargs):

        """

        Changes the order of fields, and removes the username field.

        if RECAPTCHA_ENABLED:

            self.fields.keyOrder.extend(['recaptcha_challenge_field',

                                         'recaptcha_response_field',])

    def clean_email(self):

        email = self.cleaned_data['email']

        if not email:

            raise forms.ValidationError(_("This email is already used"))

        except AstakosUser.DoesNotExist:

            return email

    def clean_has_signed_terms(self):

        has_signed_terms = self.cleaned_data['has_signed_terms']

        if not has_signed_terms:

            raise forms.ValidationError(_('You have to agree with the terms'))

        return has_signed_terms

    def clean_recaptcha_response_field(self):

        if 'recaptcha_challenge_field' in self.cleaned_data:

            self.validate_captcha()

        check = captcha.submit(rcf, rrf, RECAPTCHA_PRIVATE_KEY, self.ip)

        if not check.is_valid:

            raise forms.ValidationError(_('You have not entered the correct words'))

    def save(self, commit=True):

        """

        Saves the email, first_name and last_name properties, after the normal

        """

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

        user.renew_token()

        if commit:

            user.save()

        logger.info('Created user %s', user)

    """

    Extends the LocalUserCreationForm: adds an inviter readonly field.

    """

    inviter = forms.CharField(widget=forms.TextInput(), label=_('Inviter Real Name'))

    class Meta:

        model = AstakosUser

        fields = ("email", "first_name", "last_name", "has_signed_terms")

        widgets = {"has_signed_terms":ApprovalTermsWidget(terms_uri=reverse_lazy('latest_terms'))}

    def __init__(self, *args, **kwargs):

        """

        Changes the order of fields, and removes the username field.

        """

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

        #set readonly form fields

        self.fields['inviter'].widget.attrs['readonly'] = True

        self.fields['email'].widget.attrs['readonly'] = True

        self.fields['username'].widget.attrs['readonly'] = True

    def save(self, commit=True):

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

        level = user.invitation.inviter.level + 1

            user.save()

        return user

    class Meta:

        model = AstakosUser

        widgets = {"has_signed_terms":ApprovalTermsWidget(terms_uri=reverse_lazy('latest_terms'))}

    def __init__(self, *args, **kwargs):

        Changes the order of fields, and removes the username field.

        """

        if 'ip' in kwargs:

            kwargs.pop('ip')

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

        if get_latest_terms():

            self.fields.keyOrder.append('has_signed_terms')

    def save(self, commit=True):

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

        user.set_unusable_password()

        if commit:

            user.save()

        logger.info('Created user %s', user)

        #set readonly form fields

        self.fields['email'].widget.attrs['readonly'] = True

class LoginForm(AuthenticationForm):

    username = forms.EmailField(label=_("Email"))

    """

    Subclass of ``ModelForm`` for permiting user to edit his/her profile.

    Most of the fields are readonly since the user is not allowed to change them.

    The class defines a save method which sets ``is_verified`` to True so as the user

    during the next login will not to be redirected to profile page.

    """

    renew = forms.BooleanField(label='Renew token', required=False)

    class Meta:

        model = AstakosUser

    def __init__(self, *args, **kwargs):

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

        instance = getattr(self, 'instance', None)

        if instance and instance.id:

            for field in ro_fields:

                self.fields[field].widget.attrs['readonly'] = True

    def save(self, commit=True):

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

        user.is_verified = True

    """

    Form for sending an invitations

    """

    email = forms.EmailField(required = True, label = 'Email address')

    first_name = forms.EmailField(label = 'First name')

    last_name = forms.EmailField(label = 'Last name')

    """

    Extends PasswordResetForm by overriding save method:

    passes a custom from_email in send_mail.

    Since Django 1.3 this is useless since ``django.contrib.auth.views.reset_password``

    accepts a from_email argument.

    """

        Generates a one-use only link for resetting password and sends to the user.

        """

        for user in self.users_cache:

            t = loader.get_template(email_template_name)

            c = {

                'email': user.email,

    class Meta:

        model = AstakosUser

        fields = ("has_signed_terms",)

    def __init__(self, *args, **kwargs):

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

    def clean_has_signed_terms(self):

        has_signed_terms = self.cleaned_data['has_signed_terms']

        if not has_signed_terms:

            raise forms.ValidationError(_('You have to agree with the terms'))

        return has_signed_terms

class InvitationForm(forms.ModelForm):

    username = forms.EmailField(label=_("Email"))

    class Meta:

        model = Invitation

        fields = ('username', 'realname')

            raise forms.ValidationError(_('There is already invitation for this email.'))

        except Invitation.DoesNotExist:

            pass