from sqlalchemy import Column, Integer, TIMESTAMP, Float, ForeignKey
from sqlalchemy.sql import func
from sqlalchemy.orm import relationship
from .base_model import Base


class Purchase(Base):
    __tablename__ = "purchase"

    id = Column(Integer, primary_key=True)
    user_id = Column(Integer, ForeignKey("user.id"), nullable=False)
    used_coupon_id = Column(Integer, ForeignKey("coupon.id"), nullable=True)
    date_purchased = Column(TIMESTAMP, nullable=True)
    total = Column(Float, nullable=True)

    user = relationship("User", back_populates="purchases", foreign_keys=[user_id])
    coupon = relationship("Coupon", back_populates="purchases", foreign_keys=[used_coupon_id])
    purchase_entries = relationship("PurchaseEntry", back_populates="purchase")