"""
Celestial Event ORM model
"""
from sqlalchemy import Column, String, Integer, TIMESTAMP, Text, JSON, ForeignKey
from sqlalchemy.sql import func
from sqlalchemy.orm import relationship
from app.database import Base


class CelestialEvent(Base):
    """Celestial event model (e.g., close approaches, oppositions)"""

    __tablename__ = "celestial_events"

    id = Column(Integer, primary_key=True, autoincrement=True)
    body_id = Column(String(50), ForeignKey("celestial_bodies.id", ondelete="CASCADE"), nullable=False)
    title = Column(String(200), nullable=False)
    event_type = Column(String(50), nullable=False) # 'approach', 'opposition', 'conjunction'
    event_time = Column(TIMESTAMP, nullable=False)
    description = Column(Text, nullable=True)
    details = Column(JSON, nullable=True) # JSONB for PostgreSQL, JSON for SQLite/other
    source = Column(String(50), default='nasa_sbdb') # 'nasa_sbdb', 'calculated'
    created_at = Column(TIMESTAMP, server_default=func.now())

    # Relationship to celestial body
    body = relationship("CelestialBody", foreign_keys=[body_id])

    def __repr__(self):
        return f"<CelestialEvent(id={self.id}, title='{self.title}', body_id='{self.body_id}')>"