# -*- coding: utf-8 -*-
"""Forms for emencia.django.newsletter"""
from django import forms
from django.utils.translation import ugettext_lazy as _

from emencia.django.newsletter.models import Contact, ContactSettings
from emencia.django.newsletter.models import MailingList
from theme.models import Theme
from country.models import Country, Area


class MailingListSubscriptionForm(forms.ModelForm):
    """Form for subscribing to a mailing list"""
    # Notes : This form will not check the uniquess of
    # the 'email' field, by defining it explictly and setting
    # it the Meta.exclude list, for allowing registration
    # to a mailing list even if the contact already exists.
    # Then the contact is always added to the subscribers field
    # of the mailing list because it will be cleaned with no
    # double.

    email = forms.EmailField(label=_('Email'), max_length=75)

    def save(self, mailing_list):
        data = self.cleaned_data
        contact, created = Contact.objects.get_or_create(
            email=data['email'],
            defaults={'first_name': data['first_name'],
                      'last_name': data['last_name']})

        mailing_list.subscribers.add(contact)
        mailing_list.unsubscribers.remove(contact)

    class Meta:
        model = Contact
        fields = ('first_name', 'last_name')
        exclude = ('email',)


class AllMailingListSubscriptionForm(MailingListSubscriptionForm):
    """Form for subscribing to all mailing list"""

    mailing_lists = forms.ModelMultipleChoiceField(
        queryset=MailingList.objects.all(),
        initial=[obj.id for obj in MailingList.objects.all()],
        label=_('Mailing lists'),
        widget=forms.CheckboxSelectMultiple())

    def save(self, mailing_list):
        data = self.cleaned_data
        contact, created = Contact.objects.get_or_create(
            email=data['email'],
            defaults={'first_name': data['first_name'],
                      'last_name': data['last_name']})

        for mailing_list in data['mailing_lists']:
            mailing_list.subscribers.add(contact)
            mailing_list.unsubscribers.remove(contact)


class ContactForm(forms.ModelForm):
    email = forms.CharField(required=True, widget=forms.TextInput(attrs={'placeholder': _(u'Ваш e-mail')}))
    first_name = forms.CharField(required=True, widget=forms.TextInput(attrs={'placeholder': _(u'Ваше имя')}))
    class Meta:
        model = Contact
        fields = ('email', 'first_name', )


class ContactSettingsForm(forms.ModelForm):
    theme = forms.MultipleChoiceField(choices=[(str(item.id), item.name) for item in list(Theme.objects.language().all())],
                                      widget=forms.CheckboxSelectMultiple(attrs={'class': 'pr-checkbox'}), required=False)
    class Meta:
        model = ContactSettings
        fields = ('exponent_practicum', 'organiser_practicum', 'theme')

    def clean_theme(self):
        theme = self.cleaned_data.get('theme')
        if theme:
            return Theme.objects.filter(id__in=theme)
        else:
            return Theme.objects.none()

class ContactFilterForm(forms.Form):
    email = forms.EmailField(label=_("Email"), max_length=255)
    theme = forms.ChoiceField(label=_("Тематика"), choices = [(t.id, t.name) for t in Theme.objects.language()])
    country = forms.ChoiceField(label=_("Страна"), choices = [(c.id, c.name) for c in Country.objects.language().distinct()])
    area = forms.ChoiceField(label=_("Страна"), choices = [(c.id, c.name) for c in Country.objects.language().distinct()])