from annoying.decorators import render_to
from django.http import HttpResponse
from django.shortcuts import get_object_or_404
from django.urls import reverse
from users.models import User
from urllib.parse import urljoin

from entries import kinds, pagination
from lemoncurry import breadcrumbs, utils

breadcrumbs.add("home:index", "home")


@render_to("home/index.html")
def index(request, page=None):
    def url(page):
        kwargs = {"page": page} if page != 1 else {}
        return reverse("home:index", kwargs=kwargs)

    user = request.user
    if not hasattr(user, "entries"):
        user = get_object_or_404(User, pk=1)

    entries = user.entries.filter(kind__in=kinds.on_home)
    entries = pagination.paginate(queryset=entries, reverse=url, page=page)

    return {
        "user": user,
        "entries": entries,
        "atom": reverse("entries:atom"),
        "rss": reverse("entries:rss"),
    }


def robots(request):
    base = utils.origin(request)
    lines = ("User-agent: *", "Sitemap: {0}".format(urljoin(base, reverse("sitemap"))))
    return HttpResponse("\n".join(lines) + "\n", content_type="text/plain")