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/*backtest
start: 2019-12-23 08:00:00
end: 2024-10-12 08:00:00
period: 1d
basePeriod: 1d
exchanges: [{"eid":"Futures_Binance","currency":"BTC_USDT"}]
*/

//@version=5
strategy("Intraday Strategy with Risk-Reward 1:2, Bollinger Bands, and Stop Loss", overlay=true)

// Parameters
fastLength = input(9, title="Fast EMA Length")
slowLength = input(21, title="Slow EMA Length")
rsiLength = input(14, title="RSI Length")
overbought = input(70, title="RSI Overbought Level")
oversold = input(30, title="RSI Oversold Level")
minVolume = input(100000, title="Min Volume for Confirmation")
bbLength = input(20, title="Bollinger Bands Length")
bbStdDev = input.float(2.0, title="Bollinger Bands Standard Deviation")
stopLossPercent = input.float(1, title="Stop Loss (%)", minval=0.1) // Stop Loss %
riskRewardRatio = 2.0 // Fixed risk-reward ratio 1:2

// Indicators
fastEMA = ta.ema(close, fastLength)
slowEMA = ta.ema(close, slowLength)
rsi = ta.rsi(close, rsiLength)
volumeCondition = volume > minVolume

// Bollinger Bands
bbBasis = ta.sma(close, bbLength) // Basis (middle line) is the SMA
bbUpper = bbBasis + bbStdDev * ta.stdev(close, bbLength) // Upper band
bbLower = bbBasis - bbStdDev * ta.stdev(close, bbLength) // Lower band

// Bullish Engulfing Pattern
bullishEngulfing = close > open and close[1] < open[1] and close > open[1]

// Bearish Engulfing Pattern
bearishEngulfing = close < open and close[1] > open[1] and close < open[1]

// Entry Conditions
bullishCrossover = ta.crossover(fastEMA, slowEMA) and rsi < oversold and volumeCondition
bearishCrossover = ta.crossunder(fastEMA, slowEMA) and rsi > overbought and volumeCondition

// Signal Conditions
longCondition = (bullishCrossover or bullishEngulfing) and close < bbBasis // Buy below Bollinger Bands middle line
shortCondition = (bearishCrossover or bearishEngulfing) and close > bbBasis // Sell above Bollinger Bands middle line

// Stop Loss and Target Calculation for Long and Short Positions
stopLossLong = close * (1 - stopLossPercent / 100) // Stop loss for long positions
targetLong = close + (close - stopLossLong) * riskRewardRatio // Target for long positions (1:2 ratio)

stopLossShort = close * (1 + stopLossPercent / 100) // Stop loss for short positions
targetShort = close - (stopLossShort - close) * riskRewardRatio // Target for short positions (1:2 ratio)

// Strategy Execution with Stop Loss and Target
if (longCondition)
    strategy.entry("Long", strategy.long, stop=stopLossLong, limit=targetLong)

if (shortCondition)
    strategy.entry("Short", strategy.short, stop=stopLossShort, limit=targetShort)

// Plot Moving Averages for Visualization
plot(fastEMA, color=color.blue, linewidth=1, title="Fast EMA")
plot(slowEMA, color=color.red, linewidth=1, title="Slow EMA")

// Plot Bollinger Bands with Color Fill
plot(bbUpper, "BB Upper", color=color.gray, linewidth=1)
plot(bbLower, "BB Lower", color=color.gray, linewidth=1)
plot(bbBasis, "BB Basis", color=color.gray, linewidth=1)
fill(plot(bbUpper), plot(bbLower), color=color.new(color.blue, 90), title="Bollinger Bands Area")

// Plot Risk-Reward Levels
plot(longCondition ? targetLong : na, color=color.green, linewidth=2, title="Long Target (1:2)", style=plot.style_circles)
plot(shortCondition ? targetShort : na, color=color.red, linewidth=2, title="Short Target (1:2)", style=plot.style_circles)

plot(longCondition ? stopLossLong : na, color=color.red, linewidth=2, title="Long Stop Loss", style=plot.style_cross)
plot(shortCondition ? stopLossShort : na, color=color.green, linewidth=2, title="Short Stop Loss", style=plot.style_cross)

// Plot Buy and Sell Signals
plotshape(series=longCondition, location=location.belowbar, color=color.green, style=shape.labelup, size=size.small, title="Buy Signal", text="BUY")
plotshape(series=shortCondition, location=location.abovebar, color=color.red, style=shape.labeldown, size=size.small, title="Sell Signal", text="SELL")

// Clean Background Color for Trades
bgcolor(longCondition ? color.new(color.green, 90) : na, title="Background Long", transp=90)
bgcolor(shortCondition ? color.new(color.red, 90) : na, title="Background Short", transp=90)