"""customer_relation 客户-投顾关系表 ORM 模型。"""

from __future__ import annotations

from datetime import datetime

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

from model.base import Base


class CustomerRelation(Base):
    """客户与投顾的当前或历史关系。"""

    __tablename__ = "customer_relation"
    __table_args__ = {"comment": "客户-投顾关系表"}

    id: Mapped[int] = mapped_column(BigInteger, primary_key=True, autoincrement=True)
    customer_id: Mapped[int] = mapped_column(BigInteger, nullable=False)
    advisor_id: Mapped[int] = mapped_column(BigInteger, nullable=False)
    assign_time: Mapped[datetime] = mapped_column(DateTime, nullable=False)
    signed_time: Mapped[datetime | None] = mapped_column(DateTime)
    end_time: Mapped[datetime | None] = mapped_column(DateTime)
    status: Mapped[str] = mapped_column(String(16), nullable=False)
    reason: Mapped[str | None] = mapped_column(String(128))