import logging

from django.urls import reverse_lazy
from django.contrib.auth.decorators import login_required
from django.utils.decorators import method_decorator
from django.views.decorators.csrf import ensure_csrf_cookie
from django.views.generic import ListView, DetailView, CreateView, DeleteView, UpdateView
from guardian.decorators import permission_required_or_403
from guardian.shortcuts import assign_perm

from config import models, forms

logger = logging.getLogger(__name__)



@method_decorator(login_required, name='dispatch')
@method_decorator(permission_required_or_403('config.add_pull'),
                  name='dispatch')
@method_decorator(ensure_csrf_cookie, name='dispatch')
class PullList(ListView):
    model = models.Pull


@method_decorator(login_required, name='dispatch')
@method_decorator(permission_required_or_403('config.view_pull',
                  (models.Pull, 'pk', 'pk')),
                  name='dispatch')
class PullDetail(DetailView):
    model = models.Pull


@method_decorator(login_required, name='dispatch')
@method_decorator(permission_required_or_403('config.change_pull',
                  (models.Pull, 'pk', 'pk')),
                  name='dispatch')
class PullUpdate(UpdateView):
    model = models.Pull
    form_class = forms.PullFilteredStreamForm
    template_name_suffix = '_update_form'

    def get_form_kwargs(self):
        kwargs = super().get_form_kwargs()
        kwargs['user'] = self.request.user
        return kwargs


@method_decorator(login_required, name='dispatch')
@method_decorator(permission_required_or_403('config.add_pull'),
                  name='dispatch')
class PullCreate(CreateView):
    model = models.Pull
    form_class = forms.PullFilteredStreamForm

    def get_form_kwargs(self):
        kwargs = super().get_form_kwargs()
        kwargs['user'] = self.request.user
        return kwargs

    def form_valid(self, form):
        valid = super().form_valid(form)
        if valid:
            user = self.request.user
            assign_perm('view_pull', user, self.object)
            assign_perm('change_pull', user, self.object)
            assign_perm('delete_pull', user, self.object)
        return valid


@method_decorator(login_required, name='dispatch')
@method_decorator(permission_required_or_403('config.delete_pull',
                  (models.Pull, 'pk', 'pk')),
                  name='dispatch')
class PullDelete(DeleteView):
    model = models.Pull
    success_url = reverse_lazy('config:pull_list')