from django.db import models
from backend.models.tag import TaggedItem, TaggedItemSerializer, TaggedItemViewSet
from backend.models.location import Country


class CountryTaggedItem(TaggedItem):
    country = models.OneToOneField(
        Country, on_delete=models.PROTECT, related_name='country_items', primary_key=True)

    @classmethod
    def get_serializer(cls):
        return CountryTaggedItemSerializer

    class Meta:
        unique_together = ('country', 'tag')


class CountryTaggedItemSerializer(TaggedItemSerializer):
    class Meta:
        model = CountryTaggedItem
        fields = '__all__'


class CountryTaggedItemViewSet(TaggedItemViewSet):

    queryset = CountryTaggedItem.objects.all()  # pylint: disable=E1101
    serializer_class = CountryTaggedItemSerializer