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

from app.db.base_class import Base


class CartItem(Base):
    __tablename__ = "cart_items"

    id = Column(Integer, primary_key=True, index=True)
    user_id = Column(Integer, ForeignKey("users.id"), nullable=False)
    product_id = Column(Integer, ForeignKey("products.id"), nullable=False)
    quantity = Column(Integer, nullable=False, default=1)
    created_at = Column(DateTime, default=datetime.utcnow)
    updated_at = Column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)

    # Relationships
    user = relationship("User", back_populates="cart_items")
    product = relationship("Product", back_populates="cart_items")