"""客户主动申报投顾方案 → 投顾受理审批 的工单模型。"""

from datetime import datetime
from decimal import Decimal

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

from app.model.base import Base

#: 状态机（`pending --受理--> accepted` / `pending --驳回--> rejected`）。
#: 「已发送给客户」不单独存状态：它由 `result_content_id` 指向的方案是否已发布**推导**出来
#: （见 `AdvisorServiceRequestService._view`），避免两处状态各写各的而对不上。
PENDING = "pending"
ACCEPTED = "accepted"
REJECTED = "rejected"
DELIVERED = "delivered"


class AdvisorServiceRequest(Base):
    """客户在「我的投顾方案」页发起的服务申请单。"""

    __tablename__ = "advisor_service_request"

    #: 本表是本轮新建的，**带上 AUTO_INCREMENT** —— 既有 `fin_*` 表缺自增
    #: 导致"不给 id 就插不进去"的坑，新表不再重复踩。
    id: Mapped[int] = mapped_column(BigInteger, primary_key=True, autoincrement=True)
    request_no: Mapped[str] = mapped_column(String(32), unique=True, nullable=False)
    customer_id: Mapped[int] = mapped_column(BigInteger, nullable=False)
    amount_wan: Mapped[Decimal] = mapped_column(Numeric(14, 2), nullable=False)
    horizon: Mapped[str] = mapped_column(String(16), nullable=False)
    risk_preference: Mapped[str] = mapped_column(String(16), nullable=False)
    note: Mapped[str | None] = mapped_column(String(500))
    status: Mapped[str] = mapped_column(String(24), nullable=False)
    handled_by: Mapped[int | None] = mapped_column(BigInteger)
    handled_at: Mapped[datetime | None] = mapped_column(DateTime)
    advisor_note: Mapped[str | None] = mapped_column(String(500))
    #: 受理时自动生成的方案（`client_facing_content.id`）；驳回时为 None。
    result_content_id: Mapped[int | None] = mapped_column(BigInteger)
    created_at: Mapped[datetime] = mapped_column(DateTime, nullable=False)
    updated_at: Mapped[datetime] = mapped_column(DateTime, nullable=False)