from sqlalchemy import Column, Integer, String, Float, ForeignKey, DateTime
from sqlalchemy.orm import relationship
from datetime import datetime
from .database import Base


class User(Base):
    __tablename__ = "users"

    id = Column(Integer, primary_key=True, index=True)
    username = Column(String, unique=True, index=True, nullable=False)
    password = Column(String, nullable=False)

    purchases = relationship("Purchase", back_populates="owner", cascade="all, delete")


class Purchase(Base):
    __tablename__ = "purchases"

    id = Column(Integer, primary_key=True, index=True)
    amount_eur = Column(Float, nullable=False)
    price_eur = Column(Float, nullable=False)
    created_at = Column(DateTime, default=datetime.utcnow)
    user_id = Column(Integer, ForeignKey("users.id"), nullable=False)

    owner = relationship("User", back_populates="purchases")