Gedhusek TrendFibonacci

// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © Gedhusek

//@version=5
indicator("Gedhusek TrendFibonacci",shorttitle="G FiboTrend",scale=scale.left)

BackStep = input.int(50,"Analysis Period")
lowerValue = input.float(0.382,"Lower Fibonacci Level",options=[0.236, 0.382, 0.50, 0.618, 0.786])
upperValue = input.float(0.618,"Upper Fibonacci Level",options=[0.236, 0.382, 0.50, 0.618, 0.786])
showFill = input.bool(true,"Show Filling")
changeCandle = input.bool(true,"Change Candle Color")
atr = ta.atr(200)
max = ta.highest(close,BackStep)
min = ta.lowest(close,BackStep)


lowerFib = min + (max-min)*lowerValue
upperFib = min + (max-min)*upperValue
ma = ta.wma(close,6)

float closeVal = ma
float openVal = ma
color clrToUse = closeVal>upperFib and openVal>upperFib?color.green:closeVal<lowerFib and openVal<lowerFib?color.red:color.yellow

maxLine = plot(max,color=color.green)
minLine = plot(min,color=color.red)
LowerFibLine = plot(lowerFib,color=color.rgb(228, 255, 75, 20))
UpperFibLine = plot(upperFib,color=color.rgb(228, 255, 75, 20))
fill(maxLine,UpperFibLine,color=showFill?color.rgb(0,255,0,changeCandle?95:70):na)
fill(UpperFibLine,LowerFibLine,color=showFill?color.rgb(228, 255, 75, changeCandle?95:70):na)
fill(LowerFibLine,minLine,color=showFill?color.rgb(255,0,0,changeCandle?95:70):na)
plotcandle(open,high,low,close,"Bar",color=changeCandle?clrToUse:na,wickcolor=changeCandle?clrToUse:na,bordercolor=changeCandle?clrToUse:na)


float LowerRetracement = (max-min)*0.318
float UpperRetracement = (max-min)*0.618