"""risk_rule 风控规则 ORM 模型（规则引擎表驱动配置：存参数不存逻辑）。"""
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 RiskRule(Base):
    __tablename__ = "risk_rule"
    __table_args__ = {"comment": "风控规则表（20 条反洗钱/异常交易规则，驱动风控Agent）"}

    id: Mapped[int] = mapped_column(BigInteger, primary_key=True, autoincrement=True)
    rule_id: Mapped[str] = mapped_column(String(16), unique=True)
    rule_name: Mapped[str] = mapped_column(String(64))
    trigger_condition: Mapped[str | None] = mapped_column(String(512))
    threshold: Mapped[dict[str, Any] | None] = mapped_column(JSON)
    risk_level: Mapped[str] = mapped_column(String(8), server_default="低")
    weight: Mapped[Decimal] = mapped_column(Numeric(4, 2), server_default="1.00")
    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()
    )