from datetime import datetime

from sqlalchemy import Column, DateTime, ForeignKey, Integer, String
from sqlalchemy.orm import relationship

from app.db.session import Base


class Collection(Base):
    __tablename__ = "collections"

    id = Column(Integer, primary_key=True, index=True)
    name = Column(String, index=True)
    description = Column(String, nullable=True)
    owner_id = Column(Integer, ForeignKey("users.id"))
    created_at = Column(DateTime, default=datetime.utcnow)
    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)

    # Relationships
    owner = relationship("User", back_populates="collections")
    notes = relationship("Note", back_populates="collection", cascade="all, delete-orphan")