from django.contrib.auth.mixins import PermissionRequiredMixin
from django.core.urlresolvers import reverse
from django.http import HttpResponseRedirect
from django.views.generic.base import TemplateView

from sapl.crud.base import (Crud, CrudBaseMixin, CrudCreateView,
                            CrudDetailView, CrudUpdateView)
from sapl.utils import permissao_tb_aux

from .forms import CasaLegislativaForm
from .models import CasaLegislativa


def get_casalegislativa():
    return CasaLegislativa.objects.first()


class CasaLegislativaCrud(Crud):
    model = CasaLegislativa
    help_path = ''

    class BaseMixin(PermissionRequiredMixin, CrudBaseMixin):
        list_field_names = ['codigo', 'nome', 'sigla']

        def has_permission(self):
            if self.request.user.is_superuser:
                return True
            else:
                return False

    class CreateView(PermissionRequiredMixin, CrudCreateView):
        permission_required = {'base.add_casa_legislativa'}
        form_class = CasaLegislativaForm

    class UpdateView(PermissionRequiredMixin, CrudUpdateView):
        permission_required = {'base.change_casalegislativa'}
        form_class = CasaLegislativaForm

    class DetailView(CrudDetailView):
        form_class = CasaLegislativaForm

        def get(self, request, *args, **kwargs):
            return HttpResponseRedirect(
                reverse('sapl.base:casalegislativa_update',
                        kwargs={'pk': self.kwargs['pk']}))


class HelpView(PermissionRequiredMixin, TemplateView):
    # XXX treat non existing template as a 404!!!!

    def get_template_names(self):
        return ['ajuda/%s.html' % self.kwargs['topic']]


class SistemaView(PermissionRequiredMixin, TemplateView):
    template_name = 'sistema.html'
    permission_required = ''

    def has_permission(self):
        return permissao_tb_aux(self)