Liquidity Sweeps [UAlgo]

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

//@version=5
indicator("Liquidity Sweeps [UAlgo]", overlay = true, max_lines_count = 500)

pivotPeriod    = input.int(20, "Pivot Length", 3, 100, 1, "", "", "Pivot Left Right Length",tooltip = "Left - Right Length")
maxLine   = input.int(3, "Maximum Lines", 1, 100, 1, "Maximum S/R lines to draw", "", "S/R Settings")
resistanceColor    = input.color(color.rgb(255, 82, 82, 53), "S & R", "", "colors", "Color")
supportColor    = input.color(color.rgb(76, 175, 79, 32), "", "", "colors", "Color")
lineWidth = input.int(2, "", 0, 5, 1, "Resistance Line Colors\n\nSupport Line Colors\n\nLine Width", "colors", "Color")

pivotHigh = ta.pivothigh(high,pivotPeriod, pivotPeriod)
pivotLow  = ta.pivotlow(low,pivotPeriod, pivotPeriod)

atrOffset=ta.atr(14)

var resistanceArray = array.new_line()
var supportArray = array.new_line()

ph = not na(pivotHigh)
pl = not na(pivotLow)

if ph
    drawNewHigh = line.new(bar_index[pivotPeriod], high[pivotPeriod], bar_index, high[pivotPeriod], color = resistanceColor, width = lineWidth)
    array.push(resistanceArray, drawNewHigh)

    if array.size(resistanceArray) > maxLine
        line.delete(array.get(resistanceArray, 0))
        array.remove(resistanceArray, 0)

for i = array.size(resistanceArray) - 1 to 0 
    if array.size(resistanceArray)  > 0
        line.set_x2(array.get(resistanceArray, i), bar_index)
        highPrice = line.get_y1(array.get(resistanceArray, i))
        priceHighLoc = line.get_x1(array.get(resistanceArray, i))

        if ((high > highPrice) and (close < highPrice)) 
            line.delete(array.get(resistanceArray, i))
            line.new(priceHighLoc, highPrice, bar_index, high, color = color.purple, width = 1)
            array.remove(resistanceArray, i)
            label.new(bar_index, highPrice+atrOffset, "Buy Liquidity Sweep", style=label.style_label_down,textcolor = color.white,size = size.small, color =color.purple)
        else if (close > highPrice)
            line.delete(array.get(resistanceArray, i))
            array.remove(resistanceArray, i)

if pl
    drawNewLow = line.new(bar_index[pivotPeriod], low[pivotPeriod], bar_index, low[pivotPeriod], color = supportColor, width = lineWidth)
    array.push(supportArray, drawNewLow)

    if array.size(supportArray) > maxLine
        line.delete(array.get(supportArray, 0))
        array.remove(supportArray, 0)

for i = array.size(supportArray) - 1 to 0

    if array.size(supportArray)  > 0
        line.set_x2(array.get(supportArray, i), bar_index)
        lowPrice = line.get_y1(array.get(supportArray, i))
        priceLoc = line.get_x1(array.get(supportArray, i))

        if (low < lowPrice and close > lowPrice) 
            line.delete(array.get(supportArray, i))
            array.remove(supportArray, i)
            line.new(priceLoc, lowPrice, bar_index, low, color = color.blue, width = 1)
            label.new(bar_index, lowPrice-atrOffset, "Sell Liquidity Sweep", style=label.style_label_up,textcolor = color.white,size = size.small)

        else if (close < lowPrice)
            line.delete(array.get(supportArray, i))
            array.remove(supportArray, i)