Auto Fib Retracement Advanced

//version=5
indicator("Auto Fib Retracement Advanced", overlay=true, max_lines_count=500) // Increase max_lines_count

leftBars = input.int(10, "Pivot Left Bars")
rightBars = input.int(10, "Pivot Right Bars")
extendRight = input.bool(true, "Extend Lines Right")

swingHigh = ta.pivothigh(high, leftBars, rightBars)
swingLow = ta.pivotlow(low, leftBars, rightBars)

var float lastHighPrice = na
var int lastHighBar = na
var float lastLowPrice = na
var int lastLowBar = na

// Arrays to store line IDs for management
var lines = array.new_line()
levels_values = array.from(0.0, 0.236, 0.382, 0.5, 0.618, 0.786, 1.0)

// Update pivot points and redraw lines when a new pivot is confirmed
if not na(swingHigh) or not na(swingLow)
if not na(swingHigh)
lastHighPrice := swingHigh
lastHighBar := bar_index
if not na(swingLow)
lastLowPrice := swingLow
lastLowBar := bar_index

// Delete existing lines before drawing new ones
for i = 0 to array.size(lines) - 1
line.delete(array.get(lines, i))
array.clear(lines)

if not na(lastHighPrice) and not na(lastLowPrice)
isUptrend = lastHighPrice > lastLowPrice
fibRange = math.abs(lastHighPrice - lastLowPrice)

// Draw new lines
for i = 0 to array.size(levels_values) - 1
levelValue = array.get(levels_values, i)
priceLevel = isUptrend ? lastLowPrice + fibRange * levelValue : lastHighPrice - fibRange * levelValue

// Use line.new to create persistent horizontal lines
newLine = line.new(x1=lastLowBar, y1=priceLevel, x2=bar_index + (extendRight ? 500 : 0), y2=priceLevel, color=color.gray, style=line.style_dashed)
array.push(lines, newLine)