"""sys_config 运营参数表 ORM 模型（高净值门槛/偏离阈值等，免发版调整）。"""
from __future__ import annotations

from datetime import datetime

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

from model.base import Base


class SysConfig(Base):
    __tablename__ = "sys_config"
    __table_args__ = {"comment": "运营参数 KV 表"}

    id: Mapped[int] = mapped_column(BigInteger, primary_key=True, autoincrement=True)
    config_key: Mapped[str] = mapped_column(String(64), unique=True)
    config_value: Mapped[str] = mapped_column(String(255))
    description: Mapped[str | None] = mapped_column(String(255))
    update_time: Mapped[datetime] = mapped_column(
        DateTime, server_default=func.now(), onupdate=func.now()
    )