Untitled

//@version=5
strategy("Supertrend Strategy", overlay=true)

// Supertrend function
supertrend(length, factor) =>
    [superTrend, direction] = ta.supertrend(factor, length)
    superTrend

// Supertrend parameters
length1 = 7
factor1 = 3
length2 = 14
factor2 = 2
length3 = 21
factor3 = 1

// Supertrend calculations
superTrend1 = supertrend(length1, factor1)
superTrend2 = supertrend(length2, factor2)
superTrend3 = supertrend(length3, factor3)

// Plot Supertrend lines
plot(superTrend1, color=color.red, title="Supertrend 1")
plot(superTrend2, color=color.green, title="Supertrend 2")
plot(superTrend3, color=color.blue, title="Supertrend 3")

// Buy and sell signals
buySignal = ta.crossover(close, superTrend1) or ta.crossover(close, superTrend2) or ta.crossover(close, superTrend3)
sellSignal = ta.crossunder(close, superTrend1) or ta.crossunder(close, superTrend2) or ta.crossunder(close, superTrend3)

// Strategy entry and exit
strategy.entry("Buy", strategy.long, when=buySignal)
strategy.close("Buy", when=sellSignal)

// Plot buy and sell signals on chart
plotshape(series=buySignal, location=location.belowbar, color=color.green, style=shape.labelup, text="BUY")
plotshape(series=sellSignal, location=location.abovebar, color=color.red, style=shape.labeldown, text="SELL")