রিভার্সাল ট্রেইলিং ক্যান্ডেলস্টিক প্যাটার্ন কৌশল

/*backtest
start: 2023-12-26 00:00:00
end: 2024-01-25 00:00:00
period: 1h
basePeriod: 15m
exchanges: [{"eid":"Futures_Binance","currency":"BTC_USDT"}]
*/

//@version=3
////////////////////////////////////////////////////////////
//  Copyright by HPotter v1.0 30/01/2019
//   This is a candlestick where the open and close are the same. 
// WARNING:
// - For purpose educate only
// - This script to change bars colors.
////////////////////////////////////////////////////////////
strategy(title = "Doji Backtest", overlay = true)
input_takeprofit = input(10, title="Take Profit pip", step=0.01)
input_stoploss = input(10, title="Stop Loss pip", step=0.01)
input_minsizebody = input(0.5, title="Min. Size Body pip", step=0.01)
barcolor(abs(close - open) <= input_minsizebody ? open == close ? yellow : na : na)
possell = 0.0
posbuy = 0.0
pospricebuy = 0.0
pospricesell = 0.0
barcolornow = blue
pospricesell := close< close[2] ? abs(close - open) <= input_minsizebody ? open == close ? close : nz(pospricesell[1], 0) : nz(pospricesell[1], 0) : nz(pospricesell[1], 0) 
possell := iff(pospricesell > 0 , -1, 0)
barcolornow := possell == -1 ? red: posbuy == 1 ? green : blue 
pospricesell := iff(low <= pospricesell - input_takeprofit and pospricesell > 0, 0 ,  nz(pospricesell, 0))
pospricesell := iff(high >= pospricesell + input_stoploss and pospricesell > 0, 0 ,  nz(pospricesell, 0))
pospricebuy := close > close[2] ? abs(close - open) <= input_minsizebody ? open == close ? close : nz(pospricebuy[1], 0) : nz(pospricebuy[1], 0) : nz(pospricebuy[1], 0) 
posbuy := iff(pospricebuy > 0 , 1, 0)
barcolornow := posbuy == 1 ? green: barcolornow
pospricebuy := iff(high >= pospricebuy + input_takeprofit and pospricebuy > 0, 0 ,  nz(pospricebuy, 0))
pospricebuy := iff(low <= pospricebuy - input_stoploss and pospricebuy > 0, 0 ,  nz(pospricebuy, 0))
barcolor(barcolornow)
if (posbuy == 0 and possell == 0) 
    strategy.close_all()
if (posbuy == 1)
    strategy.entry("Long", strategy.long)
if (possell == -1)
    strategy.entry("Short", strategy.short)	   	    
pospricebuy := iff(high <= pospricebuy + input_takeprofit and pospricebuy > 0, 0 ,  nz(pospricebuy, 0))
pospricebuy := iff(low >= pospricebuy - input_stoploss and pospricebuy > 0, 0 ,  nz(pospricebuy, 0))
pospricesell := iff(low <= pospricesell - input_takeprofit and pospricesell > 0, 0 ,  nz(pospricesell, 0))
pospricesell := iff(high >= pospricesell + input_stoploss and pospricesell > 0, 0 ,  nz(pospricesell, 0))