from sqlalchemy import Column, DateTime, String, Text
from sqlalchemy.orm import relationship
from sqlalchemy.sql import func

from app.db.base import Base


class Category(Base):
    __tablename__ = "categories"

    id = Column(String, primary_key=True, index=True)
    name = Column(String, unique=True, index=True, nullable=False)
    description = Column(Text, nullable=True)
    created_at = Column(DateTime(timezone=True), server_default=func.now())
    updated_at = Column(DateTime(timezone=True), onupdate=func.now())

    # Relationships
    products = relationship("Product", back_populates="category")