BUY AND SELL INDICATOR

//version=5
indicator("Buy/Sell Signal with Alerts", overlay=true)

// Define input parameters
fastLength = input.int(9, title="Fast MA Length")
slowLength = input.int(21, title="Slow MA Length")

// Calculate moving averages
fastMA = ta.sma(close, fastLength)
slowMA = ta.sma(close, slowLength)

// Generate buy/sell signals
buySignal = ta.crossover(fastMA, slowMA)
sellSignal = ta.crossunder(fastMA, slowMA)

// Plot buy/sell signals
plotshape(buySignal, style=shape.triangleup, location=location.belowbar, color=color.green, size=size.small, title="Buy Signal")
plotshape(sellSignal, style=shape.triangledown, location=location.abovebar, color=color.red, size=size.small, title="Sell Signal")

// Send alerts
alertcondition(buySignal, title="Buy Signal", message="Buy Signal Detected")
alertcondition(sellSignal, title="Sell Signal", message="Sell Signal Detected")