from django.shortcuts import get_object_or_404
from django.views.generic import DetailView, ListView, TemplateView

from .models import MainProduct, SubProduct


class ProductOverviewView(ListView):
    model = MainProduct
    template_name = "products/overview.html"
    context_object_name = "main_products"
    queryset = MainProduct.objects.filter(is_active=True).prefetch_related(
        "sub_products"
    )


class MainProductDetailView(DetailView):
    model = MainProduct
    template_name = "products/main_detail.html"
    context_object_name = "main_product"
    slug_url_kwarg = "main_slug"
    queryset = MainProduct.objects.filter(is_active=True).prefetch_related(
        "sub_products"
    )


class SubProductDetailView(TemplateView):
    template_name = "products/sub_detail.html"

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        main_product = get_object_or_404(
            MainProduct,
            slug=self.kwargs["main_slug"],
            is_active=True,
        )
        sub_product = get_object_or_404(
            SubProduct,
            slug=self.kwargs["sub_slug"],
            main_product=main_product,
            is_active=True,
        )
        context["main_product"] = main_product
        context["sub_product"] = sub_product
        context["articles"] = sub_product.articles.prefetch_related("sections").all()
        context["siblings"] = (
            SubProduct.objects.filter(
                main_product=main_product,
                is_active=True,
            )
            .exclude(pk=sub_product.pk)
            .order_by("order", "name")
        )
        return context