MFI and MA Based Quantitative Reversal Strategy

/*backtest
start: 2023-12-19 00:00:00
end: 2023-12-26 00:00:00
period: 1m
basePeriod: 1m
exchanges: [{"eid":"Futures_Binance","currency":"BTC_USDT"}]
*/

// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © vikris

//@version=4
strategy("[VJ]Thor for MFI", overlay=true, calc_on_every_tick = false,pyramiding=0)

// ********** Strategy inputs - Start **********

// Used for intraday handling
// Session value should be from market start to the time you want to square-off 
// your intraday strategy
// Important: The end time should be at least 2 minutes before the intraday
// square-off time set by your broker
var i_marketSession = input(title="Market session", type=input.session, 
     defval="0915-1455", confirm=true)

// Make inputs that set the take profit % (optional)
longProfitPerc = input(title="Long Take Profit (%)",
     type=input.float, minval=0.0, step=0.1, defval=1) * 0.01

shortProfitPerc = input(title="Short Take Profit (%)",
     type=input.float, minval=0.0, step=0.1, defval=1) * 0.01
     
// Set stop loss level with input options (optional)
longLossPerc = input(title="Long Stop Loss (%)",
     type=input.float, minval=0.0, step=0.1, defval=0.5) * 0.01

shortLossPerc = input(title="Short Stop Loss (%)",
     type=input.float, minval=0.0, step=0.1, defval=0.5) * 0.01    

i_MFI = input(3, title="MFI Length")
OB=input(100, title="Overbought Level")
OS=input(0, title="Oversold Level")
barsizeThreshold=input(.5, step=.05, minval=.1, maxval=1, title="Bar Body Size, 1=No Wicks")
i_MAFilter = input(true, title="Use MA Trend Filter")
i_MALen = input(80, title="MA Length")
// ********** Strategy inputs - End **********


// ********** Supporting functions - Start **********

// A function to check whether the bar or period is in intraday session
barInSession(sess) => time(timeframe.period, sess) != 0
// Figure out take profit price
longExitPrice  = strategy.position_avg_price * (1 + longProfitPerc)
shortExitPrice = strategy.position_avg_price * (1 - shortProfitPerc)

// Determine stop loss price
longStopPrice  = strategy.position_avg_price * (1 - longLossPerc)
shortStopPrice = strategy.position_avg_price * (1 + shortLossPerc)


// ********** Supporting functions - End **********


// ********** Strategy - Start **********
// See if intraday session is active
bool intradaySession = true

// Trade only if intraday session is active

//=================Strategy logic goes in here===========================
 

MFI=mfi(close,i_MFI)
barsize=high-low
barbodysize=close>open?(open-close)*-1:(open-close)
shortwicksbar=barbodysize>barsize*barsizeThreshold
SMA=sma(close, i_MALen)
MAFilter=close > SMA



BUY = MFI[1] == OB and close > open and shortwicksbar and (i_MAFilter ? MAFilter : true)

SELL = MFI[1] == OS and close < open and shortwicksbar and (i_MAFilter ? not MAFilter : true) 

//Final Long/Short Condition
longCondition = BUY
shortCondition = SELL
 
//Long Strategy - buy condition and exits with Take profit and SL
if (longCondition and intradaySession)
    stop_level = longStopPrice
    profit_level = longExitPrice
    strategy.entry("Buy", strategy.long)
    strategy.exit("TP/SL", "Buy", stop=stop_level, limit=profit_level)


//Short Strategy - sell condition and exits with Take profit and SL
if (shortCondition and intradaySession)
    stop_level = shortStopPrice
    profit_level = shortExitPrice
    strategy.entry("Sell", strategy.short)
    strategy.exit("TP/SL", "Sell", stop=stop_level, limit=profit_level)
 
 
// Square-off position (when session is over and position is open)
squareOff = (not intradaySession) and (strategy.position_size != 0)
strategy.close_all(when = squareOff, comment = "Square-off")

// ********** Strategy - End **********