from django.db.models import QuerySet, Count, Q
from .models import Park

def get_base_park_queryset() -> QuerySet[Park]:
    """Get base queryset with all needed annotations and prefetches"""
    return (
        Park.objects.select_related('owner')
        .prefetch_related('location', 'photos', 'rides')
        .annotate(
            current_ride_count=Count('rides', distinct=True),
            current_coaster_count=Count('rides', filter=Q(rides__category="RC"), distinct=True)
        )
        .order_by('name')
    )