"""使用 dcm 信号建立做 T 底仓。"""

from __future__ import annotations

import logging

from libs.calc import calc_buy_volume
from sdk import OP_BUY
from strategy.trend.order import PlaceOrderRequest


def open_base(run, ticks, signals) -> None:
    """仅处理 dcm 信号，使用趋势策略同款反弹确认建立底仓。"""
    for signal in signals:
        if signal.signal_key != "dcm" or run.orders.busy(signal.code, "BUY"):
            continue
        tick = ticks.get(signal.code)
        price = tick.last_price if tick else 0.0
        if price <= 0 or price > run.account_cfg.zt_max_price:
            continue
        volume = calc_buy_volume(price, run.account_cfg.buy_value)
        if volume <= 0 or not run.buy_watch.triggered("ZT 建仓", signal.code, price):
            continue
        request = PlaceOrderRequest(run.client, OP_BUY, signal.code, volume, run.orders.new_order_id("base"), run.account_cfg.strategy)
        if run.orders.place(request):
            run.buy_watch.forget(signal.code)
            logging.info("[ZT 建仓] %s 买入 %d 股", signal.code, volume)