//@version=5
indicator(shorttitle="TTP BB+ RSI + VOL", title="TTP BB+ RSI + VOL", overlay=true, timeframe="", timeframe_gaps=false)

// BB
length = input.int(25, minval=1)
src = input(close, title="Source")
mult = input.float(2.0, minval=0.001, maxval=50, title="StdDev")
basis = ta.sma(src, length)
dev = mult * ta.stdev(src, length)
upper = basis + dev
lower = basis - dev
offset = input.int(0, "Offset", minval = -500, maxval = 500)

// VOL
lengthVol = 130
coef = 0.2
vcoef = 2.5
signalLength=5
smoothVFI=false
ma(x,y) => smoothVFI ? ta.sma(x,y) : x
typical=hlc3
inter = math.log( typical ) - math.log( typical[1] )
vinter = ta.stdev(inter, 30 )
cutoff = coef * vinter * close
vave = ta.sma( volume, lengthVol )[1]
vmax = vave * vcoef
vc = volume < vmax ?  volume : vmax //min( volume, vmax ) 
mf = typical - typical[1] 
vcp =  mf > cutoff ? vc :  mf < -cutoff ?  -vc : 0 
vfi = ta.sma(math.sum( vcp , lengthVol )/vave, 3)
vfima=ta.ema( vfi, signalLength )
d=vfi-vfima

plot(vfi, "vfi")
plot(vfima, "vfima")

// RSI
rsiLengthInput = 8
maTypeInput ="VWMA"
maLengthInput = 14
bbMultInput = 2.0
up = ta.rma(math.max(ta.change(close), 0), rsiLengthInput)
down = ta.rma(-math.min(ta.change(close), 0), rsiLengthInput)
rsi = down == 0 ? 100 : up == 0 ? 0 : 100 - (100 / (1 + up / down))
rsiMA = ta.vwma(rsi, length)

plot(rsi, "rsi")
plot(rsiMA, "rsiMA")

counterTrend = input(false)
ma = ta.ema(close, 200)

buysignal = ta.crossover(close, upper) and
      rsi > rsiMA and
      rsi > 65 and 
      vfi > vfima and 
      vfi > 0 and 
      (counterTrend ? close < ma and open < ma : close > ma and open > ma)
sellsignal = ta.crossunder(close, lower) and 
     rsi < rsiMA and 
     rsi < 35 and 
     vfi < vfima and 
     vfi < 0 and 
     (counterTrend ? close > ma and open > ma: close < ma and open < ma)

plot(buysignal ? 1: sellsignal ? 2 : 0 , "signal", color = na)

plotshape(buysignal, "B", style = shape.labelup, location = location.belowbar, color = color.green, textcolor = color.white, text = "B")
plotshape(sellsignal, "S", style = shape.labeldown, location = location.abovebar, color = color.red, textcolor = color.white, text = "S")