from dataclasses import dataclass

from django.http import HttpRequest, HttpResponse, Http404
from django.shortcuts import render, redirect

from items.models import Category, Item


# Create your views here.

@dataclass
class SelectedCategory:
    name: str | None
    id: str | None


def index(request: HttpRequest, category: str | None = None) -> HttpResponse:
    selected_category = SelectedCategory(name=None, id=None)
    if category is not None:
        try:
            cat = Category.objects.get(slug=category.lower())
            selected_category = SelectedCategory(name=cat.name, id=cat.slug)
        except Category.DoesNotExist:
            raise Http404()

    return render(request, 'catalog/index.html', {
        'categories': Category.objects.all(),
        'items': Item.objects.all(),
        'selected_category': selected_category
    })