from sqlalchemy import Column, String, Integer, Boolean, DateTime, ForeignKey from sqlalchemy.sql import func from core.database import Base import uuid class Pen(Base): __tablename__ = "pens" id = Column(String, primary_key=True, default=lambda: str(uuid.uuid4())) name = Column(String, nullable=False) brand = Column(String, nullable=False) color = Column(String, nullable=False) price = Column(Integer, nullable=False) in_stock = Column(Boolean, default=True) description = Column(String) created_at = Column(DateTime, default=func.now()) updated_at = Column(DateTime, default=func.now(), onupdate=func.now())