"""fin_holdings 持仓表 ORM 模型（当前/历史持仓快照）。"""
from __future__ import annotations

from datetime import datetime
from decimal import Decimal

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

from model.base import Base


class FinHoldings(Base):
    __tablename__ = "fin_holdings"
    __table_args__ = {"comment": "持仓表（当前/历史持仓快照）"}

    id: Mapped[int] = mapped_column(BigInteger, primary_key=True, autoincrement=True)
    customer_id: Mapped[int] = mapped_column(BigInteger)
    product_id: Mapped[int] = mapped_column(BigInteger)
    shares: Mapped[Decimal] = mapped_column(Numeric(18, 4), server_default="0")
    cost_amount: Mapped[Decimal] = mapped_column(Numeric(18, 2), server_default="0")
    current_value: Mapped[Decimal] = mapped_column(Numeric(18, 2), server_default="0")
    profit_loss: Mapped[Decimal] = mapped_column(Numeric(18, 2), server_default="0")
    profit_ratio: Mapped[Decimal] = mapped_column(Numeric(8, 4), server_default="0")
    status: Mapped[str] = mapped_column(String(16), server_default="持有中")
    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()
    )