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b2be963 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 | from datetime import datetime, timezone
from sqlalchemy import Column, Integer, String, Float, DateTime, ForeignKey, Boolean
from sqlalchemy.orm import relationship
from app.db.base import Base
class Coupon(Base):
__tablename__ = "coupons"
id = Column(Integer, primary_key=True, autoincrement=True)
code = Column(String(50), unique=True, index=True, nullable=False)
discount_percent = Column(Float, nullable=False)
is_active = Column(Boolean, default=True, nullable=False)
expires_at = Column(DateTime, nullable=True)
created_at = Column(DateTime, default=lambda: datetime.now(timezone.utc), nullable=False)
carts = relationship("Cart", back_populates="coupon")
class Cart(Base):
__tablename__ = "carts"
id = Column(Integer, primary_key=True, autoincrement=True)
user_id = Column(Integer, ForeignKey("users.id", ondelete="CASCADE"), nullable=True)
session_id = Column(String(255), unique=True, index=True, nullable=True)
coupon_id = Column(Integer, ForeignKey("coupons.id", ondelete="SET NULL"), nullable=True)
created_at = Column(DateTime, default=lambda: datetime.now(timezone.utc), nullable=False)
updated_at = Column(DateTime, default=lambda: datetime.now(timezone.utc), onupdate=lambda: datetime.now(timezone.utc), nullable=False)
user = relationship("User", backref="cart")
coupon = relationship("Coupon", back_populates="carts")
items = relationship("CartItem", back_populates="cart", cascade="all, delete-orphan")
class CartItem(Base):
__tablename__ = "cart_items"
id = Column(Integer, primary_key=True, autoincrement=True)
cart_id = Column(Integer, ForeignKey("carts.id", ondelete="CASCADE"), nullable=False)
product_id = Column(Integer, ForeignKey("products.id", ondelete="CASCADE"), nullable=False)
variant_label = Column(String(100), nullable=True) # Store variant name (e.g. "Space Gray / 128GB")
variant_id = Column(String(50), nullable=True) # Store variant ID for easier matching
quantity = Column(Integer, default=1, nullable=False)
unit_price = Column(Float, nullable=False) # snapshot of price when added/updated
created_at = Column(DateTime, default=lambda: datetime.now(timezone.utc), nullable=False)
updated_at = Column(DateTime, default=lambda: datetime.now(timezone.utc), onupdate=lambda: datetime.now(timezone.utc), nullable=False)
cart = relationship("Cart", back_populates="items")
product = relationship("Product")
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