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

from app.core.db import Base, utc_now


class Order(Base):
    __tablename__ = "orders"

    id = Column(String, primary_key=True)
    user_id = Column(String, ForeignKey("users.id"), nullable=False, index=True)
    plan_id = Column(String, nullable=False)
    plan_name = Column(String, nullable=False)
    amount = Column(Integer, nullable=False)
    currency = Column(String, default="CNY")
    payment_method = Column(String, nullable=False)
    status = Column(String, default="pending")
    trade_no = Column(String, nullable=True, index=True)
    paid_at = Column(DateTime(timezone=True), nullable=True)
    created_at = Column(DateTime(timezone=True), default=utc_now)
    expired_at = Column(DateTime(timezone=True), nullable=True)

    user = relationship("User", back_populates="orders")