# -*- coding: utf-8 -*-
"""Views for emencia.django.newsletter Mailing List"""
from django.template import RequestContext
from django.shortcuts import get_object_or_404
from django.shortcuts import render_to_response
from django.contrib import messages
from django.http import HttpResponseRedirect
from django.views.generic import DetailView, TemplateView
from django.core.urlresolvers import reverse_lazy
from django.utils.translation import ugettext as _

from emencia.django.newsletter.utils.tokens import untokenize
from emencia.django.newsletter.models import Newsletter, MailingList, ContactMailingStatus, Contact, ContactSettings
from emencia.django.newsletter.forms import SubscribeSettingsForm


def view_mailinglist_unsubscribe(request, slug, uidb36, token):
    """hard Unsubscribe a contact to a mailing list"""
    newsletter = get_object_or_404(Newsletter, slug=slug)
    contact = untokenize(uidb36, token)

    already_unsubscribed = contact in newsletter.mailing_list.unsubscribers.all()
    if not already_unsubscribed:
        newsletter.mailing_list.unsubscribers.add(contact)
        newsletter.mailing_list.save()
        already_unsubscribed = True
        ContactMailingStatus.objects.create(newsletter=newsletter, contact=contact,
                                            status=ContactMailingStatus.UNSUBSCRIPTION)

    return HttpResponseRedirect(reverse_lazy('newsletter_mailinglist_unsubscribe_success'))

def view_mailinglist_subscribe(request, form_class, mailing_list_id=None):
    """
    A simple view that shows a form for subscription
    for a mailing list(s).
    """
    subscribed = False
    mailing_list = None
    if mailing_list_id:
        mailing_list = get_object_or_404(MailingList, id=mailing_list_id)

    if request.POST and not subscribed:
        form = form_class(request.POST)
        if form.is_valid():
            form.save(mailing_list)
            subscribed = True
    else:
        form = form_class()

    return render_to_response('newsletter/mailing_list_subscribe.html',
                              {'subscribed': subscribed,
                               'mailing_list': mailing_list,
                               'form': form},
                              context_instance=RequestContext(request))


class UnsubscribeView(DetailView):
    model = Newsletter
    template_name = 'client/newsletters/unsubscribe_form.html'

    def get_object(self, queryset=None):
        return get_object_or_404(Newsletter, slug=self.kwargs.get('slug'))

    def get_announce_form(self):
        contact = untokenize(self.kwargs.get('uidb36'), self.kwargs.get('token'))
        self.contact= contact
        setting = contact.contactsettings
        initial = {'email': contact.email}

        initial['city'] = ','.join(['%s:%s'%(item.id, item.name) for item in set(setting.city.all())])
        if setting.exponent_practicum or setting.organiser_practicum or setting.theme.exists():
            initial['get_announce'] = True
        # north america check
        if setting.area.filter(id=SubscribeSettingsForm.NA_ID).exists():
            initial['na_expo'] = True
        # asia check
        if setting.area.filter(id=SubscribeSettingsForm.ASIA_ID).exists():
            initial['asia_expo'] = True
        # europe check
        if setting.area.filter(id=SubscribeSettingsForm.EUROPE_ID).exists():
            initial['europe_expo'] = True

        form = SubscribeSettingsForm(instance=setting, initial=initial)
        return form

    def get_context_data(self, **kwargs):
        context = super(UnsubscribeView, self).get_context_data(**kwargs)
        context['subscribe'] = self.get_announce_form()
        #
        ContactMailingStatus.objects.create(newsletter=self.object, contact=self.contact,
                                            status=ContactMailingStatus.UNSUBSCRIPTION)

        return context


def unsubscription_handle(request):

    if request.POST:
        email = request.POST.get('email')
        contact = get_object_or_404(Contact, email=email)
        setting = contact.contactsettings
        form = SubscribeSettingsForm(request.POST, instance=setting)
        if form.is_valid():
            setting = form.save(commit=False)
            setting.contact = contact
            setting.save()
            form.save_m2m()
            form.save_additional_fields(setting)

            if form.cleaned_data.get('get_announce'):
                messages.add_message(request, messages.INFO, _(u'Настройки вашой подписки успешно сохранены'))
            else:
                contact.subscriber = False
                contact.save()

        return HttpResponseRedirect(reverse_lazy('newsletter_mailinglist_unsubscribe_success'))

class UnsubscriptionSuccess(TemplateView):
    template_name = 'client/newsletters/unsubscribe_success.html'