"""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

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"""
    # todo: 111
    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)
    """
    if request.POST.get('email') and 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 render_to_response('newsletter/mailing_list_unsubscribe.html',
                              {'email': contact.email,
                               'already_unsubscribed': already_unsubscribed},
                              context_instance=RequestContext(request))


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'))
        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()

        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)
            messages.add_message(request, messages.INFO, u'Настройки вашой подписки успешно сохранены')
        return HttpResponseRedirect('/')