"""File containing webapp forms."""

from django import forms
from django.utils.translation import ugettext_lazy as _
from django.core.exceptions import ValidationError

from webapp.models import CustomKaehmyRole, PresetKaehmyRole
from webapp.models import OhlhafvChallenge, KaehmyForm, KaehmyMessage


class KaehmyForm_Form(forms.ModelForm):
    """Class representing Kaehmy form."""

    class Meta:
        """Meta for class KaehmyForm."""

        model = KaehmyForm
        fields = ['name', 'email', 'phone_number', 'year',
                  'preset_roles', 'custom_roles', 'custom_role_name',
                  'custom_role_is_board', 'text']

    def __init__(self, *args, **kwargs):
        super(KaehmyForm_Form, self).__init__(*args, **kwargs)

        custom_roles_exist = CustomKaehmyRole.objects.all().exists()
        self.fields["custom_roles"].widget = forms.widgets.CheckboxSelectMultiple() if custom_roles_exist else forms.HiddenInput()
        self.fields["custom_roles"].help_text = ""
        self.fields["custom_roles"].label = _('Custom roles')
        self.fields["custom_roles"].queryset = CustomKaehmyRole.objects.all()
        self.fields["preset_roles"].widget = forms.widgets.CheckboxSelectMultiple(attrs={'title': _('Preset roles')})
        self.fields["preset_roles"].help_text = ""
        self.fields["preset_roles"].queryset = PresetKaehmyRole.objects.all()
        self.fields["preset_roles"].label = _('Preset roles')

    def clean_phone_number(self):
        """Clean phone number field."""
        number = self.cleaned_data.get('phone_number')
        if number.isdigit():
            return number
        else:
            raise ValidationError(_('Invalid phone number'))

    def clean_custom_role_name(self):
        """Check that no other custom role with same name exists."""
        custom_name = self.cleaned_data.get('custom_role_name')
        if CustomKaehmyRole.objects.get(name=custom_name) is None:
            return custom_name
        else:
            raise ValidationError(_('Custom role with the same name already exists.'))


class KaehmyCommentForm(forms.ModelForm):

    class Meta:
        model = KaehmyMessage
        fields = ['name', 'email', 'message', 'parent']


class OhlhafvForm(forms.ModelForm):
    """Class representing Ohlhafv form."""

    class Meta:
        """Meta class for Ohlhafv form."""

        model = OhlhafvChallenge
        fields = ['challenger', 'challenger_email',
                  'victim', 'victim_email', 'series', 'message']