Nifty Futures vs ATM Options Signal

//version=5
indicator("Nifty Futures vs ATM Options Signal", overlay=true)

// === Input Symbols ===
// Use appropriate symbols available in your TradingView account
niftyFutSymbol = input.symbol("NSE:NIFTY1!", "Nifty Futures")
atmCallSymbol = input.symbol("NSE:NIFTY24JUN22400CE", "ATM Call Option")
atmPutSymbol = input.symbol("NSE:NIFTY24JUN22400PE", "ATM Put Option")

// === Fetch OHLC from 5-min candles for all symbols ===
niftyOpen = request.security(niftyFutSymbol, "5", open)
niftyClose = request.security(niftyFutSymbol, "5", close)

callOpen = request.security(atmCallSymbol, "5", open)
callClose = request.security(atmCallSymbol, "5", close)

putOpen = request.security(atmPutSymbol, "5", open)
putClose = request.security(atmPutSymbol, "5", close)

// === Condition 1: Buy Signal ===
// Nifty Futures RED candle and ATM Call Option GREEN candle
buySignal = (niftyClose < niftyOpen) and (callClose > callOpen)

// === Condition 2: Sell Signal ===
// Nifty Futures GREEN candle and ATM Put Option GREEN candle
sellSignal = (niftyClose > niftyOpen) and (putClose > putOpen)

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

bgcolor(buySignal ? color.new(color.green, 85) : na, title="Buy Background")
bgcolor(sellSignal ? color.new(color.red, 85) : na, title="Sell Background")