from django.contrib.messages.views import SuccessMessageMixin
from django.urls import reverse
from django.utils.translation import gettext_lazy as _
from django.views.generic import CreateView, DeleteView, ListView, UpdateView

from purchase.forms import BasketForm
from purchase.models import Basket
from purchase.views.utils import ProtectedViewsMixin


class NewBasketView(ProtectedViewsMixin, SuccessMessageMixin, CreateView):
    permission_required = ["purchase.add_basket"]
    model = Basket
    form_class = BasketForm
    success_message = _("Successfully created basket.")

    queryset = Basket.objects.priced()

    def get_success_url(self):
        if self.request.user.has_perm("purchase.change_basket"):
            return super().get_success_url()
        else:
            return reverse("purchase:new")


class UpdateBasketView(ProtectedViewsMixin, SuccessMessageMixin, UpdateView):
    permission_required = ["purchase.change_basket", "purchase.view_basket"]
    model = Basket
    form_class = BasketForm
    success_message = _("Successfully updated basket.")
    queryset = Basket.objects.priced()


class ListBasketsView(ProtectedViewsMixin, ListView):
    permission_required = ["purchase.view_basket"]
    model = Basket
    context_object_name = "baskets"
    ordering = "-id"
    queryset = Basket.objects.priced()


class DeleteBasketView(ProtectedViewsMixin, SuccessMessageMixin, DeleteView):
    permission_required = ["purchase.delete_basket"]
    model = Basket
    success_message = _("Basket successfully deleted.")
    queryset = Basket.objects.priced()
    context_object_name = "basket"

    def get_success_url(self):
        return reverse("purchase:list")