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# SPDX-License-Identifier: AGPL-3.0-or-later
"""Forms for the email app."""
import re
from typing import Iterator
from django import forms
from django.core.exceptions import ValidationError
from django.utils.translation import gettext_lazy as _
from plinth.modules.names.components import DomainName
from . import aliases as aliases_module
def _get_domain_choices() -> Iterator[tuple[str, str]]:
"""Double domain entries for inclusion in the choice field."""
return ((domain.name, domain.name) for domain in DomainName.list())
class DomainForm(forms.Form):
primary_domain = forms.ChoiceField(
choices=_get_domain_choices,
label=_('Primary domain'),
help_text=_(
'Mails are received for all domains configured in the system. '
'Among these, select the most important one.'),
required=True,
)
class AliasCreateForm(forms.Form):
"""Form to create a new alias."""
alias = forms.CharField(label=_('New alias (without @domain)'),
min_length=2, max_length=50)
def clean_alias(self):
"""Return the checked value for alias."""
value = self.data['alias'].strip().lower()
if not re.match(r'^[a-z0-9-_\.]+$', value):
raise ValidationError(_('Contains illegal characters'))
if not re.match(r'^[a-z0-9].*[a-z0-9]$', value):
raise ValidationError(_('Must start and end with a-z or 0-9'))
# For when uids are automatically aliased to username
if re.match(r'^[0-9]+$', value):
raise ValidationError(_('Cannot be a number'))
if aliases_module.exists(value):
raise ValidationError('Alias is already taken')
return value
class AliasListForm(forms.Form):
"""Form to list/enable/disable/delete current aliases."""
aliases = forms.MultipleChoiceField(label=_('Aliases'),
widget=forms.CheckboxSelectMultiple)
def __init__(self, aliases, *args, **kwargs):
"""Populate the choices for aliases."""
super().__init__(*args, **kwargs)
choices = [(alias.name, alias.name) for alias in aliases]
self.fields['aliases'].choices = choices
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