# from django.shortcuts import render
from django.views.generic import TemplateView
from django.http import Http404

from datetime import date

from mainsite.models import Publication


class YearView(TemplateView):
    ''' Display a year worth of BOcals '''
    template_name = 'mainsite/year_view.html'

    def get_context_data(self, year, nYear, **kwargs):
        context = super(YearView, self).get_context_data(**kwargs)

        try:
            year, nYear = int(year), int(nYear)
        except ValueError:
            raise Http404
        if year + 1 != nYear:
            raise Http404

        publications = Publication.objects.filter(
            date__gte=date(year, 8, 1),
            date__lt=date(nYear, 8, 1))
        if len(publications) == 0:
            raise Http404
        context['publications'] = publications

        return context