from django.contrib.contenttypes.models import ContentType
from django.db.models import QuerySet
from typing import Optional, Tuple

class LocationMixin:
    """Mixin for models that can have location data attached."""

    def get_location(self) -> Optional['Location']:
        """Get location for this instance."""
        from location.models import Location
        ct = ContentType.objects.get_for_model(self.__class__)
        return Location.objects.filter(content_type=ct, object_id=self.pk).first()

    def set_location(self, address: str, latitude: float, longitude: float) -> 'Location':
        """Set or update location for this instance."""
        from location.models import Location
        ct = ContentType.objects.get_for_model(self.__class__)
        location, created = Location.objects.update_or_create(
            content_type=ct,
            object_id=self.pk,
            defaults={
                'address': address,
                'latitude': latitude,
                'longitude': longitude
            }
        )
        return location

    @property
    def coordinates(self) -> Optional[Tuple[float, float]]:
        """Get coordinates (latitude, longitude) if available."""
        location = self.get_location()
        if location:
            return location.latitude, location.longitude
        return None

    @property
    def formatted_location(self) -> str:
        """Get formatted address string if available."""
        location = self.get_location()
        if location:
            return location.get_formatted_address()
        return ""