"""portfolio_benchmark 组合基准配置表 ORM（投顾Agent 再平衡参照，运营可调整；工作台只读展示）。"""
from __future__ import annotations

from datetime import datetime
from decimal import Decimal
from typing import Any

from sqlalchemy import BigInteger, DateTime, JSON, Numeric, String, func
from sqlalchemy.orm import Mapped, mapped_column

from model.base import Base


class PortfolioBenchmark(Base):
    __tablename__ = "portfolio_benchmark"
    __table_args__ = {"comment": "组合基准配置表（投顾Agent 再平衡参照，运营可调整）"}

    id: Mapped[int] = mapped_column(BigInteger, primary_key=True, autoincrement=True)
    risk_level: Mapped[str] = mapped_column(String(16))
    target_allocation: Mapped[dict[str, Any] | None] = mapped_column(JSON)
    drift_threshold: Mapped[Decimal] = mapped_column(Numeric(5, 2), server_default="5.00")
    status: Mapped[str] = mapped_column(String(8), server_default="启用")
    create_time: Mapped[datetime] = mapped_column(DateTime, server_default=func.now())
    update_time: Mapped[datetime] = mapped_column(
        DateTime, server_default=func.now(), onupdate=func.now()
    )