"""
User Follows ORM model
"""
from sqlalchemy import Column, String, Integer, TIMESTAMP, ForeignKey
from sqlalchemy.sql import func
from sqlalchemy.orm import relationship
from app.database import Base


class UserFollow(Base):
    """User follows celestial body model"""

    __tablename__ = "user_follows"

    user_id = Column(Integer, ForeignKey("users.id", ondelete="CASCADE"), primary_key=True)
    body_id = Column(String(50), ForeignKey("celestial_bodies.id", ondelete="CASCADE"), primary_key=True)
    created_at = Column(TIMESTAMP, server_default=func.now())

    # Relationships
    user = relationship("User", back_populates="follows")
    # Note: No back_populates to CelestialBody as we don't need reverse lookup

    def __repr__(self):
        return f"<UserFollow(user_id={self.user_id}, body_id='{self.body_id}')>"