from rest_framework import viewsets

from apps.authentication.mixins.region_filter import RegionFilterMixin
from apps.core.models import MobileTest, SystemConfig
from apps.core.serializers import MobileTestSerializer, SystemConfigSerializer


class BaseViewSet(RegionFilterMixin, viewsets.ModelViewSet):
    """
    All view sets in the project should inherit from this class.
    It applies region-based filtering automatically to GET (list) requests.
    """

    def get_queryset(self):
        queryset = super().get_queryset()
        request = self.request
        user = request.user
        user_relation = user.user_relation.all()

        if self.request.method.lower() == 'get' and not self.kwargs.get('pk'):
            queryset = self.filter_by_region(queryset, org=True)

        if not user_relation.first().role.type.key == 'ADM':
            model_name = queryset.model.__name__.lower()

            if model_name == 'user':
                queryset = queryset.exclude(id=user.id)

            elif model_name == 'organization':
                queryset = queryset.exclude(id=user_relation.first().organization.id)

        return queryset


class MobileTestViewSet(viewsets.ModelViewSet):
    queryset = MobileTest.objects.all()
    serializer_class = MobileTestSerializer


class SystemConfigViewSet(viewsets.ModelViewSet):
    queryset = SystemConfig.objects.all()
    serializer_class = SystemConfigSerializer