from django.contrib.sitemaps import Sitemap
from django.utils import timezone
from .models import Event, Photo


class EventSitemap(Sitemap):
    changefreq = "never"
    priority = 0.6
    protocol = 'https'

    def items(self):
        return Event.objects.all()

    def priority(self, event):
        delta = timezone.now() - event.start
        delta = abs(delta.days / 300.0 )
        return max(1 - delta, 0.1)

    def lastmod(self, event):
        return event.date_modified