"""交易结果展示与入库时的语义归一化。"""

_WIN_EPS = 1e-9


def normalize_display_result(result):
    """展示用：外部平仓一律视为手动平仓。"""
    res = (result or "").strip()
    if res == "外部平仓" or res.startswith("外部平仓"):
        return "手动平仓"
    return res


def is_winning_pnl(pnl_amount) -> bool:
    """胜率统计：盈亏为正即计为盈利单。"""
    try:
        return float(pnl_amount or 0) > _WIN_EPS
    except (TypeError, ValueError):
        return False


def sql_effective_pnl_expr() -> str:
    """与 to_effective_trade_dict / hub_trades_lib 一致的盈亏 SQL 表达式。"""
    return "COALESCE(reviewed_pnl_amount, exchange_realized_pnl, pnl_amount, 0)"


def count_winning_trades(trades) -> int:
    return sum(1 for r in trades or [] if is_winning_pnl(r.get("effective_pnl_amount")))


def normalize_result_with_pnl(result, pnl_amount):
    """
    非手动平仓且实际盈利时，不应记为「止损」。
    程序触发的止损类平仓若盈亏为正，归类为「移动止盈」。
    """
    res = normalize_display_result(result)
    if res == "手动平仓":
        return res
    if res == "止损":
        try:
            if float(pnl_amount or 0) > 0:
                return "移动止盈"
        except (TypeError, ValueError):
            pass
    return res