Buy Sell Indicator

study("ADX and DI and momentum and tema x dema", overlay=true)
len = input(title="Length", type=integer, defval=6)
th = input(title="threshold", type=integer, defval=6)

TrueRange = max(max(high-low, abs(high-nz(close[1]))), abs(low-nz(close[1])))
DirectionalMovementPlus = high-nz(high[1]) > nz(low[1])-low ? max(high-nz(high[1]), 0): 0
DirectionalMovementMinus = nz(low[1])-low > high-nz(high[1]) ? max(nz(low[1])-low, 0): 0


SmoothedTrueRange = nz(SmoothedTrueRange[1]) - (nz(SmoothedTrueRange[1])/len) + TrueRange
SmoothedDirectionalMovementPlus = nz(SmoothedDirectionalMovementPlus[1]) - (nz(SmoothedDirectionalMovementPlus[1])/len) + DirectionalMovementPlus
SmoothedDirectionalMovementMinus = nz(SmoothedDirectionalMovementMinus[1]) - (nz(SmoothedDirectionalMovementMinus[1])/len) + DirectionalMovementMinus

DIPlus = SmoothedDirectionalMovementPlus / SmoothedTrueRange * 100
DIMinus = SmoothedDirectionalMovementMinus / SmoothedTrueRange * 100
DX = abs(DIPlus-DIMinus) / (DIPlus+DIMinus)*100
ADX = sma(DX, len)

//plot(DIPlus, color=green, title="DI+")
//plot(DIMinus, color=red, title="DI-")
//plot(ADX, color=black, title="ADX")
//hline(th, color=black, linestyle=dashed)

adxval = (DIPlus - DIMinus) * ADX

//plot(adxval, color=adxval > 0 ? green : red, style=histogram, linewidth=4)

length = input(6, title="BB Length")
mult = input(2.0,title="BB MultFactor")
lengthKC=input(6, title="KC Length")
multKC = input(1.5, title="KC MultFactor")

useTrueRange = input(true, title="Use TrueRange (KC)", type=bool)

// Calculate BB
source = open
ema1 = ema(source, length)
ema2 = ema(ema1, length)
ema3 = ema(ema2, length)
basis = 3 * (ema1 - ema2) + ema3
dev = multKC * stdev(source, length)
upperBB = basis + dev
lowerBB = basis - dev

// Calculate KC
e1 = ema(source, length)
e2 = ema(e1, length)
ma = 2 * e1 - e2
range = useTrueRange ? tr : (high - low)
rangema = sma(range, lengthKC)
upperKC = ma + rangema * multKC
lowerKC = ma - rangema * multKC

sqzOn  = (lowerBB > lowerKC) and (upperBB < upperKC)
sqzOff = (lowerBB < lowerKC) and (upperBB > upperKC)
noSqz  = (sqzOn == false) and (sqzOff == false)

val1 = linreg(source  -  avg(avg(highest(high, lengthKC), lowest(low, lengthKC)),sma(source,lengthKC)), 
            lengthKC,0)

length2 = input(13, title="BB Length")
lengthKC2=input(13, title="KC Length")

// Calculate BB
basis2 = sma(source, length2)
dev2 = multKC * stdev(source, length2)
upperBB2 = basis2 + dev2
lowerBB2 = basis2 - dev2

// Calculate KC
ma2 = sma(source, lengthKC2)
range2 = useTrueRange ? tr : (high - low)
rangema2 = sma(range2, lengthKC2)
upperKC2 = ma2 + rangema2 * multKC
lowerKC2 = ma2 - rangema2 * multKC

sqzOn2  = (lowerBB2 > lowerKC2) and (upperBB2 < upperKC2)
sqzOff2 = (lowerBB2 < lowerKC2) and (upperBB2 > upperKC2)
noSqz2  = (sqzOn2 == false) and (sqzOff2 == false)

val2 = linreg(source  -  avg(avg(highest(high, lengthKC2), lowest(low, lengthKC2)),sma(source,lengthKC2)), 
            lengthKC2,0)

val = val1 + val2

bcolor = iff( val > 0, 
            iff( val > nz(val[1]), lime, green),
            iff( val < nz(val[1]), red, maroon))
scolor = noSqz ? blue : sqzOn ? black : gray 
//plot(val, color=bcolor, style=histogram, linewidth=4)
//plot(0, color=scolor, style=cross, linewidth=2)


length3=input(21)
bt = input( 100, title="Buy Trigger")
st = input( -100, title="Sell Trigger")
markCrossovers=input(false, type=bool)

prev(s,i) =>
    y=abs(round(i))
    s[y]

calc_ttf( periods ) =>
    bp = highest( high, periods ) - prev( lowest( low, periods ), - periods )
    sp = prev( highest( high, periods ), - periods ) - lowest( low, periods )
    100 * (bp - sp) / ( 0.5*( bp + sp) )

ttf = calc_ttf( length3 )


res = adxval*abs(val)

//plot(res, color=res > 0 ? green : red, style=histogram, linewidth=4)

plotshape(res > 0 and res[1] <= 0 and ttf < 0 ? res : na, color=lime, style=shape.arrowup, text="Buy")
plotshape(res < 0 and res[1] >= 0 and ttf > 50 ? res : na, color=red, style=shape.arrowdown, text="Sell")
//plotshape(res > 0 and res[1] <= 0 ? res : na, color=lime, style=shape.arrowup, text="Buy")
//plotshape(res < 0 and res[1] >= 0 ? res : na, color=red, style=shape.arrowdown, text="Sell")