"""实例页：持仓未实现盈亏（实时盈亏）汇总。"""
from __future__ import annotations

from collections.abc import Callable
from typing import Any

from lib.hub.hub_monitor_totals_lib import position_unrealized_pnl


def _position_contracts(pos: dict[str, Any]) -> float:
    try:
        return abs(float(pos.get("contracts") or 0))
    except (TypeError, ValueError):
        return 0.0


def sum_unrealized_pnl_from_positions(positions: list[dict[str, Any]] | None) -> float:
    total = 0.0
    for p in positions or []:
        if not isinstance(p, dict):
            continue
        if _position_contracts(p) <= 1e-12:
            continue
        total += position_unrealized_pnl(p)
    return round(total, 2)


def fetch_unrealized_pnl(fetch_positions_fn: Callable[[], list[dict[str, Any]] | None]) -> float | None:
    try:
        return sum_unrealized_pnl_from_positions(fetch_positions_fn() or [])
    except Exception:
        return None