from datetime import datetime

from django.views.generic import ListView
from django.shortcuts import render
from django.views.generic.dates import YearArchiveView, MonthArchiveView, DayArchiveView, DateDetailView
from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
from django.http import HttpResponse

from .models import ExternalArticle
from .models import PressRelease
from ..events.models import Event


class NewsListView(ListView):
    extra_context = {}
    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        # context['key'] = 'value'
        context.update(self.extra_context)
        return context
                                    
def listing(request, *args, **kwargs):
    news_queryset = PressRelease.objects.all()

#    if (not kwargs.has_key('allow_future')) or not kwargs['allow_future']:
    news_queryset = news_queryset.filter(**{'%s__lte' % kwargs['date_field']:
                          datetime.now()})

    date_list = news_queryset.dates(kwargs['date_field'], 'year')

    paginate_by = kwargs.get('paginate_by', 6)  # Show 6 news items per page, by default
    paginator = Paginator(news_queryset, paginate_by)

    page = request.GET.get('page')
    try:
        news = paginator.page(page)
    except PageNotAnInteger:
        # If page is not an integer, deliver first page.
        news = paginator.page(1)
    except EmptyPage:
        # If page is out of range (e.g. 9999), deliver last page of results.
        news = paginator.page(paginator.num_pages)

    return render(request, 'news/pressrelease_list.html', {"news": news, "date_list" : date_list})

class NewsYearArchiveView(YearArchiveView):
    # queryset = Article.objects.all()
    # date_field = "pub_date"
    make_object_list = True
    allow_future = True

# def archive_year(request, **kwargs):
#     callable = NewsYearArchiveView.as_view(**kwargs)
#     return callable(request)

class NewsMonthArchiveView(MonthArchiveView):
    allow_future = True

# def archive_month(request, **kwargs):
#     # return HttpResponse("archive_month")
#     callable = NewsMonthArchiveView.as_view(**kwargs)
#     return callable(request)

class NewsDayArchiveView(DayArchiveView):
    allow_future = True

# def archive_day(request, **kwargs):
#     # return HttpResponse("archive_day")
#     callable = NewsDayArchiveView.as_view(**kwargs)
#     return callable(request)

class NewsDateDetailView(DateDetailView):
    # extra_context = {}
    allow_future = True
    # slug_url_kwarg = 'slug'

    # def get_context_data(self, **kwargs):
    #     context = super(NewsDateDetailView, self).get_context_data(**kwargs)
    #     context.update(self.extra_context)
    #     return context

# def object_detail(request, **kwargs):
#     # extra_context = {}
#     # extra_context['slug'] = kwargs['slug']
#     # del kwargs['slug']
#     # kwargs['extra_context'] = extra_context
#     # return HttpResponse("object_detail: " + str(kwargs))
#     # slug = kwargs['slug']
#     # del kwargs['slug']
#     callable = NewsDateDetailView.as_view(**kwargs)
#     return callable(request)