Custom Buy Signal Indicator

//version=5
indicator("Custom Buy Signal Indicator", overlay=true)

// INPUTS
emaLength = input.int(9, title="EMA Length")
supertrendLength = input.int(10, title="SuperTrend Length")
supertrendFactor = input.float(2.0, title="SuperTrend Factor")
keltnerLength = input.int(20, title="Keltner Channel Length")
keltnerMult = input.float(1.0, title="Keltner Multiplier")
avgVolLength = input.int(20, title="Average Volume Length")

// CALCULATIONS
price = close
ema9 = ta.ema(price, emaLength)

// Condition 1: Price Crosses Above 9 EMA
crossAboveEMA = ta.crossover(price, ema9)

// Condition 2: Price is above central pivot line (previous day)
pivotCentral = (high[1] + low[1] + close[1]) / 3
abovePivot = price > pivotCentral

// Condition 3: SuperTrend
[supertrend, direction] = ta.supertrend(supertrendFactor, supertrendLength)
aboveSupertrend = price > supertrend

// Condition 4: VWAP
vwapLine = ta.vwap
aboveVWAP = price > vwapLine

// Condition 5: Above middle line of Keltner Channel
basisKC = ta.ema(price, keltnerLength)
rangeKC = ta.ema(high - low, keltnerLength)
upperKC = basisKC + keltnerMult * rangeKC
lowerKC = basisKC - keltnerMult * rangeKC
middleKC = basisKC
aboveKCmiddle = price > middleKC

// Condition 6: Above average volume
avgVol = ta.sma(volume, avgVolLength)
aboveAvgVol = volume > avgVol

// Combine all conditions
buySignal = crossAboveEMA and abovePivot and aboveSupertrend and aboveVWAP and aboveKCmiddle and aboveAvgVol

// Plotting
plotshape(buySignal, title="Buy Signal", location=location.belowbar, color=color.green, style=shape.labelup, text="BUY")

// Optional: Display Indicators
plot(ema9, title="EMA 9", color=color.orange)
plot(supertrend, title="SuperTrend", color=color.green)
plot(vwapLine, title="VWAP", color=color.blue)
plot(middleKC, title="KC Middle", color=color.purple)