# -*- coding: utf-8 -*-
# Copyright (C) 2017 Jan Jancar
#
# This file is a part of the Django Mailman PGP plugin.
#
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your option)
# any later version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
# more details.
#
# You should have received a copy of the GNU General Public License along with
# this program.  If not, see <http://www.gnu.org/licenses/>.
from django import forms

from django.utils.translation import ugettext_lazy as _


class NullBooleanRadioSelect(forms.RadioSelect):
    def value_from_datadict(self, data, files, name):
        value = data.get(name, None)
        return {'2': True,
                True: True,
                'True': True,
                '3': False,
                'False': False,
                False: False}.get(value, None)


boolean_choices = ((True, _('Yes')), (False, _('No')))
action_choices = (
    ('hold', _('Hold')),
    ('reject', _('Reject')),
    ('discard', _('Discard')),
    ('accept', _('Accept')),
    ('defer', _('Defer'))
)


class ListSignatureSettingsForm(forms.Form):
    sign_outgoing = forms.NullBooleanField(
            widget=NullBooleanRadioSelect(choices=boolean_choices),
            required=False,
            label=_('Sign outgoing messages'),
            help_text=_(
                    'Whether to sign the outgoing postings of a mailing list'
                    'by the list key.')
    )
    strip_original_sig = forms.NullBooleanField(
            widget=NullBooleanRadioSelect(choices=boolean_choices),
            required=False,
            label=_('Strip sender signature'),
            help_text=_('Whether to strip the original signature of a message'
                        '(if any).')
    )
    unsigned_msg_action = forms.ChoiceField(
            widget=forms.Select(),
            choices=action_choices,
            required=False,
            label=_('Unsigned message action'),
            help_text=_(
                    'An action to take on an unsigned message. `Defer` lets '
                    'the message pass-through to the next check.')
    )
    inline_pgp_action = forms.ChoiceField(
            widget=forms.Select(),
            choices=action_choices,
            required=False,
            label=_('Inline PGP action'),
            help_text=_(
                    'An action to take on a message that is signed using '
                    'inline PGP. `Defer` lets the message pass-through to the '
                    'next check.')
    )
    expired_sig_action = forms.ChoiceField(
            widget=forms.Select(),
            choices=action_choices,
            required=False,
            label=_('Expired signature action'),
            help_text=_('An action to take on a message that has an expired '
                        'signature. `Defer` lets the message pass-through to'
                        'the next check.')
    )
    revoked_sig_action = forms.ChoiceField(
            widget=forms.Select(),
            choices=action_choices,
            required=False,
            label=_('Revoked signature action'),
            help_text=_('An action to take on a message that has a revoked '
                        'signature. `Defer` lets the message pass-through to'
                        'the next check.')
    )
    invalid_sig_action = forms.ChoiceField(
            widget=forms.Select(),
            choices=action_choices,
            required=False,
            label=_('Invalid signature action'),
            help_text=_('An action to take on a message with an invalid '
                        'signature. `Defer` lets the message pass-through to'
                        'the next check.')
    )
    duplicate_sig_action = forms.ChoiceField(
            widget=forms.Select(),
            choices=action_choices,
            required=False,
            label=_('Duplicate signature action'),
            help_text=_('An action to take on a message which contains a '
                        'signature that was already posted to a PGP enabled '
                        'mailing list before. `Defer` lets the message '
                        'pass-through to the rest of the chain.')
    )


class ListEncryptionSettingsForm(forms.Form):
    encrypt_outgoing = forms.NullBooleanField(
            widget=NullBooleanRadioSelect(choices=boolean_choices),
            required=False,
            label=_('Encrypt outgoing messages'),
            help_text=_('Whether to encrypt the outgoing postings of a mailing'
                        'list to the subscribers keys.')
    )
    nonencrypted_msg_action = forms.ChoiceField(
            widget=forms.Select(),
            choices=action_choices,
            required=False,
            label=_('Nonencrypted message action'),
            help_text=_('An action to take on a nonencrypted message, is '
                        'done before executing the signature checks. `Defer` '
                        'lets the message pass-through to signature checks.')
    )