ABH_BH_MFI Strategie

namespace StockSharp.Samples.Strategies;

using System;
using System.Collections.Generic;
using Ecng.Common;
using StockSharp.Algo.Indicators;
using StockSharp.Algo.Strategies;
using StockSharp.Messages;

/// <summary>
/// ABH BH MFI strategy: Harami pattern with MFI confirmation.
/// </summary>
public class AbhBhMfiStrategy : Strategy
{
	private readonly StrategyParam<DataType> _candleType;
	private readonly StrategyParam<int> _mfiPeriod;
	private readonly StrategyParam<decimal> _oversold;
	private readonly StrategyParam<decimal> _overbought;
	private readonly StrategyParam<int> _signalCooldownCandles;

	private readonly List<ICandleMessage> _candles = new();
	private int _candlesSinceTrade;

	public DataType CandleType { get => _candleType.Value; set => _candleType.Value = value; }
	public int MfiPeriod { get => _mfiPeriod.Value; set => _mfiPeriod.Value = value; }
	public decimal Oversold { get => _oversold.Value; set => _oversold.Value = value; }
	public decimal Overbought { get => _overbought.Value; set => _overbought.Value = value; }
	public int SignalCooldownCandles { get => _signalCooldownCandles.Value; set => _signalCooldownCandles.Value = value; }

	public AbhBhMfiStrategy()
	{
		_candleType = Param(nameof(CandleType), TimeSpan.FromMinutes(30).TimeFrame())
			.SetDisplay("Candle Type", "Candle timeframe", "General");
		_mfiPeriod = Param(nameof(MfiPeriod), 14)
			.SetGreaterThanZero()
			.SetDisplay("MFI Period", "Money Flow Index period", "Indicators");
		_oversold = Param(nameof(Oversold), 40m)
			.SetDisplay("Oversold", "MFI oversold level", "Signals");
		_overbought = Param(nameof(Overbought), 60m)
			.SetDisplay("Overbought", "MFI overbought level", "Signals");
		_signalCooldownCandles = Param(nameof(SignalCooldownCandles), 6)
			.SetGreaterThanZero()
			.SetDisplay("Signal Cooldown", "Bars to wait between trades", "Trading");
	}

	/// <inheritdoc />
	protected override void OnReseted()
	{
		base.OnReseted();
		_candles.Clear();
		_candlesSinceTrade = SignalCooldownCandles;
	}

	/// <inheritdoc />
	protected override void OnStarted2(DateTime time)
	{
		base.OnStarted2(time);
		_candles.Clear();
		_candlesSinceTrade = SignalCooldownCandles;
		var mfi = new MoneyFlowIndex { Length = MfiPeriod };
		var subscription = SubscribeCandles(CandleType);
		subscription.Bind(mfi, ProcessCandle).Start();
	}

	private void ProcessCandle(ICandleMessage candle, decimal mfiValue)
	{
		if (candle.State != CandleStates.Finished) return;

		if (_candlesSinceTrade < SignalCooldownCandles)
			_candlesSinceTrade++;

		_candles.Add(candle);
		if (_candles.Count > 5) _candles.RemoveAt(0);

		if (_candles.Count >= 2)
		{
			var curr = _candles[^1];
			var prev = _candles[^2];

			var bullishHarami = prev.OpenPrice > prev.ClosePrice
				&& curr.ClosePrice > curr.OpenPrice
				&& curr.OpenPrice > prev.ClosePrice
				&& curr.ClosePrice < prev.OpenPrice;

			var bearishHarami = prev.ClosePrice > prev.OpenPrice
				&& curr.OpenPrice > curr.ClosePrice
				&& curr.ClosePrice > prev.OpenPrice
				&& curr.OpenPrice < prev.ClosePrice;

			if (bullishHarami && mfiValue < Oversold && Position <= 0 && _candlesSinceTrade >= SignalCooldownCandles)
			{
				BuyMarket();
				_candlesSinceTrade = 0;
			}
			else if (bearishHarami && mfiValue > Overbought && Position >= 0 && _candlesSinceTrade >= SignalCooldownCandles)
			{
				SellMarket();
				_candlesSinceTrade = 0;
			}
		}
	}
}

import clr

clr.AddReference("StockSharp.Messages")
clr.AddReference("StockSharp.Algo")
clr.AddReference("StockSharp.Algo.Indicators")
clr.AddReference("StockSharp.Algo.Strategies")

from System import TimeSpan
from StockSharp.Messages import DataType, CandleStates
from StockSharp.Algo.Indicators import MoneyFlowIndex
from StockSharp.Algo.Strategies import Strategy

class abh_bh_mfi_strategy(Strategy):
    def __init__(self):
        super(abh_bh_mfi_strategy, self).__init__()

        self._candle_type = self.Param("CandleType", DataType.TimeFrame(TimeSpan.FromMinutes(30)))
        self._mfi_period = self.Param("MfiPeriod", 14)
        self._oversold = self.Param("Oversold", 40.0)
        self._overbought = self.Param("Overbought", 60.0)
        self._signal_cooldown_candles = self.Param("SignalCooldownCandles", 6)

        self._candles = []
        self._candles_since_trade = 6

    @property
    def CandleType(self):
        return self._candle_type.Value

    @CandleType.setter
    def CandleType(self, value):
        self._candle_type.Value = value

    @property
    def MfiPeriod(self):
        return self._mfi_period.Value

    @MfiPeriod.setter
    def MfiPeriod(self, value):
        self._mfi_period.Value = value

    @property
    def Oversold(self):
        return self._oversold.Value

    @Oversold.setter
    def Oversold(self, value):
        self._oversold.Value = value

    @property
    def Overbought(self):
        return self._overbought.Value

    @Overbought.setter
    def Overbought(self, value):
        self._overbought.Value = value

    @property
    def SignalCooldownCandles(self):
        return self._signal_cooldown_candles.Value

    @SignalCooldownCandles.setter
    def SignalCooldownCandles(self, value):
        self._signal_cooldown_candles.Value = value

    def OnReseted(self):
        super(abh_bh_mfi_strategy, self).OnReseted()
        self._candles.clear()
        self._candles_since_trade = self.SignalCooldownCandles

    def OnStarted2(self, time):
        super(abh_bh_mfi_strategy, self).OnStarted2(time)
        self._candles.clear()
        self._candles_since_trade = self.SignalCooldownCandles

        mfi = MoneyFlowIndex()
        mfi.Length = self.MfiPeriod

        subscription = self.SubscribeCandles(self.CandleType)
        subscription.Bind(mfi, self._process_candle).Start()

    def _process_candle(self, candle, mfi_value):
        if candle.State != CandleStates.Finished:
            return

        if self._candles_since_trade < self.SignalCooldownCandles:
            self._candles_since_trade += 1

        mfi_val = float(mfi_value)

        self._candles.append(candle)
        if len(self._candles) > 5:
            self._candles.pop(0)

        if len(self._candles) >= 2:
            curr = self._candles[-1]
            prev = self._candles[-2]

            bullish_harami = (float(prev.OpenPrice) > float(prev.ClosePrice)
                and float(curr.ClosePrice) > float(curr.OpenPrice)
                and float(curr.OpenPrice) > float(prev.ClosePrice)
                and float(curr.ClosePrice) < float(prev.OpenPrice))

            bearish_harami = (float(prev.ClosePrice) > float(prev.OpenPrice)
                and float(curr.OpenPrice) > float(curr.ClosePrice)
                and float(curr.ClosePrice) > float(prev.OpenPrice)
                and float(curr.OpenPrice) < float(prev.ClosePrice))

            if bullish_harami and mfi_val < self.Oversold and self.Position <= 0 and self._candles_since_trade >= self.SignalCooldownCandles:
                self.BuyMarket()
                self._candles_since_trade = 0
            elif bearish_harami and mfi_val > self.Overbought and self.Position >= 0 and self._candles_since_trade >= self.SignalCooldownCandles:
                self.SellMarket()
                self._candles_since_trade = 0

    def CreateClone(self):
        return abh_bh_mfi_strategy()