import socket
from django.views.generic import ListView, CreateView, TemplateView, FormView
from django.views.generic.detail import DetailView
from django.views.generic.dates import YearArchiveView, MonthArchiveView
from django.contrib.syndication.views import Feed
from django.template.response import TemplateResponse
from django.contrib.auth import get_user_model
from django.db.models import Q
from django.shortcuts import get_object_or_404, redirect
from django.conf import settings
from django.urls import reverse, reverse_lazy

from utils.views import PaginatedListView

from smtplib import SMTPException
from .models import NewsletterMailing, Subscriber, Newsletter
from .forms import SubscribeRequestForm, UpdateForm

ACTIONS = ('subscribe', 'unsubscribe', 'update')


class NewsletterMailingDetail(DetailView):
    model = NewsletterMailing
    slug_field = "slug"

    def get_queryset(self):
        queryset = super(NewsletterMailingDetail, self).get_queryset()
        return queryset.select_related('location').prefetch_related('field_notes').prefetch_related('books')

    def get_object(self, queryset=None):
        obj = super(NewsletterMailingDetail, self).get_object(queryset=queryset)
        self.location = obj.location
        return obj

    def get_context_data(self, **kwargs):
        context = super(NewsletterMailingDetail, self).get_context_data(**kwargs)
        return context


class NewsletterSubscribedView(TemplateView):
    template_name = "lttr/subscribed.html"


class NewsletterListView(CreateView):
    """
    Return a subscribe form and list of Newsletter posts in reverse chronological order
    """
    model = Subscriber
    form_class = SubscribeRequestForm
    action = 'subscribe'

    def get_form_kwargs(self):
        kwargs = super(NewsletterListView, self).get_form_kwargs()
        kwargs['newsletter'] = Newsletter.objects.get(title="Friends of a Long Year")
        return kwargs

    def get_context_data(self, **kwargs):
        context = super(NewsletterListView, self).get_context_data(**kwargs)
        context['mailings'] = NewsletterMailing.objects.filter(status=1)
        return context

    def get_success_url(self):
        return reverse_lazy('lttr:subscribed')

    def form_valid(self, form, **kwargs):
        form.instance.user, created = get_user_model().objects.get_or_create(
                email=form.cleaned_data['email_field'],
                username=form.cleaned_data['email_field']
        )
        self.object = form.save()
        try:
            self.object.send_activation_email(action=self.action)

        except (SMTPException, socket.error) as e:
            print(e)
            self.error = True

            # Although form was valid there was error while sending email,
            # so stay at the same url.
            return super(NewsletterListView, self).form_invalid(form)
        return super(NewsletterListView, self).form_valid(form)


class ConfirmSubscriptionView(DetailView):
    model = Subscriber
    template_name = "lttr/confirm_activate.html"

    def get_object(self):
        obj = Subscriber.objects.get(newsletter__slug=self.kwargs['slug'], activation_code=self.kwargs['activation_code'])
        if obj.subscribed is False:
            obj.update('subscribe')
        return obj


class UnsubscribeRequestView(DetailView):
    model = Subscriber
    template_name = "lttr/unsubscribe.html"

    def get_object(self):
        obj = Subscriber.objects.get(newsletter__slug=self.kwargs['slug'])
        if obj.subscribed is True:
            obj.update('unsubscribe')
        return obj