Sirilak Heikin Ashi + RSI Crossover Strategy (Chart)

//version=5
indicator("Sirilak Heikin Ashi + RSI Crossover Strategy (Chart)", overlay=true)

// Heikin Ashi Calculations
var float haClose = na
var float haOpen = na
var float haHigh = na
var float haLow = na

haClose := (open + high + low + close) / 4
haOpen := na(haOpen[1]) ? (open + close) / 2 : (haOpen[1] + haClose[1]) / 2
haHigh := math.max(high, math.max(haOpen, haClose))
haLow := math.min(low, math.min(haOpen, haClose))

// Heikin Ashi Color Logic
isGreen = haClose > haOpen // Green candle
isRed = haClose < haOpen // Red candle

// RSI Calculations
rsiLength = input.int(5, title="RSI Length")
rsiSmaLength = input.int(21, title="RSI SMA Length")
rsiValue = ta.rsi(close, rsiLength)
rsiSma = ta.sma(rsiValue, rsiSmaLength)

// RSI Crossover Logic
rsiCrossAbove = ta.crossover(rsiValue, rsiSma) // RSI crosses above its SMA
rsiCrossBelow = ta.crossunder(rsiValue, rsiSma) // RSI crosses below its SMA

// Buy Signal (Entry) - After Candle Close
buySignal = isGreen and rsiCrossAbove and barstate.isconfirmed

// Buy Exit (Close) - After Candle Close
buyExit = isRed and rsiCrossBelow and barstate.isconfirmed

// Sell Signal (Entry) - After Candle Close
sellSignal = isRed and rsiCrossBelow and barstate.isconfirmed

// Sell Exit (Close) - After Candle Close
sellExit = isGreen and rsiCrossAbove and barstate.isconfirmed

// Plot Heikin Ashi Candles on the Main Chart
candleColor = isGreen ? color.green : color.red
plotcandle(haOpen, haHigh, haLow, haClose, color=candleColor)

// Plot Buy Entry Signal (Green Label Below Candle)
plotshape(series=buySignal, location=location.belowbar, color=color.green, style=shape.labelup, text="BUY", size=size.small, offset=0)

// Plot Buy Exit Signal (Yellow Label Above Candle)
plotshape(series=buyExit, location=location.abovebar, color=color.yellow, style=shape.labeldown, text="BUY EXIT", size=size.small, offset=0)

// Plot Sell Entry Signal (Red Label Above Candle)
plotshape(series=sellSignal, location=location.abovebar, color=color.red, style=shape.labeldown, text="SELL", size=size.small, offset=0)

// Plot Sell Exit Signal (Black Label Below Candle)
plotshape(series=sellExit, location=location.belowbar, color=color.black, style=shape.labelup, text="SELL EXIT", size=size.small, offset=0)

// Alerts (Triggered Only After Candle Close)
if (buySignal)
alert("BUY: Heikin Ashi Green + RSI Cross Above SMA", alert.freq_once_per_bar_close)

if (buyExit)
alert("BUY EXIT: Heikin Ashi Red + RSI Cross Below SMA", alert.freq_once_per_bar_close)

if (sellSignal)
alert("SELL: Heikin Ashi Red + RSI Cross Below SMA", alert.freq_once_per_bar_close)

if (sellExit)
alert("SELL EXIT: Heikin Ashi Green + RSI Cross Above SMA", alert.freq_once_per_bar_close)