from django.conf import settings
from django.core.cache import cache
from django.core.paginator import Paginator
from django.db.models import Count, F, Q, Sum
from django.http import JsonResponse
from django.shortcuts import get_object_or_404, redirect
from django.urls import reverse
from django.views import View
from django.views.generic import DetailView, ListView, TemplateView

from ..models import Album, Photo, Redir


class Main(TemplateView):
    """Main homepage."""
    template_name = "gallery/main.html"

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context['canonical_url'] = self.request.build_absolute_uri(reverse('gallery:main_url'))
        context['latest_albums'] = Album.objects.filter(is_public=True).order_by('-album_date')[:6]

        return context


class About(TemplateView):
    """Static about page."""
    template_name = "gallery/about.html"

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context['canonical_url'] = self.request.build_absolute_uri(reverse('gallery:about_url'))
        return context


def redirect_to_album(request, redir_path):
    """Handles redirect logic for shortened/legacy album URLs."""
    redir = get_object_or_404(Redir, path=redir_path)
    return redirect('gallery:album_url', album_slug=redir.album.slug)