from django.contrib.auth.mixins import LoginRequiredMixin
from django.views.generic.detail import DetailView
from django.views.generic.edit import CreateView, DeleteView, UpdateView

from . import forms, models


class OwnerFilterMixin(LoginRequiredMixin):
    def get_queryset(self):
        return super().get_queryset().filter(owner=self.request.user)


class GroupMixin:
    model = models.Group
    fields = ["name"]


class GroupCreateView(LoginRequiredMixin, GroupMixin, CreateView):
    def form_valid(self, form):
        form.instance.owner = self.request.user
        return super().form_valid(form)


class GroupUpdateView(OwnerFilterMixin, GroupMixin, UpdateView):
    pass


class GroupDeleteView(OwnerFilterMixin, GroupMixin, DeleteView):
    success_url = "/"


class GroupDetailView(OwnerFilterMixin, GroupMixin, DetailView):
    pass


class GroupAddMembersView(OwnerFilterMixin, GroupMixin, UpdateView):
    fields = None
    form_class = forms.GroupAddMembersForm