from django.http import HttpResponse, Http404

from django.template import loader

from django.contrib.sites.models import Site

from django.core import urlresolvers

from django.utils.encoding import smart_str

from django.core.paginator import EmptyPage, PageNotAnInteger

def index(request, sitemaps):

    current_site = Site.objects.get_current()

    sites = []

    protocol = request.is_secure() and 'https' or 'http'

    for section, site in sitemaps.items():

        if callable(site):

            pages = site().paginator.num_pages

        else:

            pages = site.paginator.num_pages

        sitemap_url = urlresolvers.reverse('django.contrib.sitemaps.views.sitemap', kwargs={'section': section})

        sites.append('%s://%s%s' % (protocol, current_site.domain, sitemap_url))

        if pages > 1:

            for page in range(2, pages+1):

                sites.append('%s://%s%s?p=%s' % (protocol, current_site.domain, sitemap_url, page))

    xml = loader.render_to_string('sitemap_index.xml', {'sitemaps': sites})

    return HttpResponse(xml, mimetype='application/xml')

def sitemap(request, sitemaps, section=None):

    maps, urls = [], []

    if section is not None:

        if section not in sitemaps:

            raise Http404("No sitemap available for section: %r" % section)

        maps.append(sitemaps[section])

    else:

        maps = sitemaps.values()

    page = request.GET.get("p", 1)

    for site in maps:

        try:

            if callable(site):

                urls.extend(site().get_urls(page))

            else:

                urls.extend(site.get_urls(page))

        except EmptyPage:

            raise Http404("Page %s empty" % page)

        except PageNotAnInteger:

            raise Http404("No page '%s'" % page)

    xml = smart_str(loader.render_to_string('sitemap.xml', {'urlset': urls}))

    return HttpResponse(xml, mimetype='application/xml')