Jawaun's Advanced Order Block Finder

// This Pine Script™ code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © jawauntb

//@version=5
indicator("Jawaun's Advanced Order Block Finder", overlay = true, max_labels_count = 500, max_lines_count = 500)


// Inputs
colors = input.string("LIGHT", "Color Scheme", options = ["DARK", "LIGHT"])
periods = input.int(7, "Relevant Periods to identify OB", minval = 1)
threshold = input.float(0.0, "Min. Percent move for valid OB", step = 0.1)
bull_channels = input.int(10, "Number of Bullish Channels to show", minval = 1)
bear_channels = input.int(10, "Number of Bearish Channels to show", minval = 1)
show_labels = input(true, "Show Labels")
show_mid_labels = input(true, "Show Mid Labels")
extend_lines = input(true, "Extend Lines")

// Color Scheme
bullcolor = colors == "DARK" ? color.white : color.green
bearcolor = colors == "DARK" ? color.blue : color.red
transparencyValue = 70

// Functions
percentChange(price1, price2) =>
    (price1 - price2) / price2 * 100

isValidOB(ob_period, threshold) =>
    percentChange(close[ob_period], close[1]) >= threshold or percentChange(close[1], close[ob_period]) >= threshold

isBullishOB(periods) =>
    close[periods + 1] < open[periods + 1] and ta.rising(close, periods)

isBearishOB(periods) =>
    close[periods + 1] > open[periods + 1] and ta.falling(close, periods)

// Order Block Identification
ob_period = periods + 1
validOB = isValidOB(ob_period, threshold)
bullishOB = validOB and isBullishOB(periods)
bearishOB = validOB and isBearishOB(periods)

// Order Block Levels
OB_bull_high = bullishOB ? high[ob_period] : na
OB_bull_low = bullishOB ? low[ob_period] : na
OB_bull_mid = bullishOB ? (OB_bull_high + OB_bull_low) / 2 : na
OB_bear_high = bearishOB ? high[ob_period] : na
OB_bear_low = bearishOB ? low[ob_period] : na
OB_bear_mid = bearishOB ? (OB_bear_high + OB_bear_low) / 2 : na

// Plotting
var bull_line_high = array.new_line()
var bull_line_low = array.new_line()
var bear_line_high = array.new_line()
var bear_line_low = array.new_line()
var bull_label = array.new_label()
var bear_label = array.new_label()
var bull_mid_label = array.new_label()
var bear_mid_label = array.new_label()

if bullishOB
    line1 = line.new(bar_index[ob_period], OB_bull_high, bar_index + 1, OB_bull_high, color = bullcolor, width = 2, style = line.style_solid)
    line2 = line.new(bar_index[ob_period], OB_bull_low, bar_index + 1, OB_bull_low, color = bullcolor, width = 2, style = line.style_solid)
    array.unshift(bull_line_high, line1)
    array.unshift(bull_line_low, line2)

    if extend_lines
        line.set_extend(line1, extend.right)
        line.set_extend(line2, extend.right)

    if show_mid_labels
        mid_label = label.new(bar_index[ob_period], OB_bull_mid, "BullOB Mid", color = color.new(bullcolor, transparencyValue), style = label.style_label_center, textcolor = color.white, size = size.small)
        array.unshift(bull_mid_label, mid_label)

    if show_labels
        label1 = label.new(bar_index[ob_period], OB_bull_high, "BullOB High", color = color.new(bullcolor, transparencyValue), style = label.style_label_down, textcolor = color.white, size = size.small)
        label2 = label.new(bar_index[ob_period], OB_bull_low, "BullOB Low", color = color.new(bullcolor, transparencyValue), style = label.style_label_up, textcolor = color.white, size = size.small)
        array.unshift(bull_label, label1)
        array.unshift(bull_label, label2)

if bearishOB
    line3 = line.new(bar_index[ob_period], OB_bear_high, bar_index + 1, OB_bear_high, color = bearcolor, width = 2, style = line.style_solid)
    line4 = line.new(bar_index[ob_period], OB_bear_low, bar_index + 1, OB_bear_low, color = bearcolor, width = 2, style = line.style_solid)
    array.unshift(bear_line_high, line3)
    array.unshift(bear_line_low, line4)

    if extend_lines
        line.set_extend(line3, extend.right)
        line.set_extend(line4, extend.right)

    if show_mid_labels
        mid_label = label.new(bar_index[ob_period], OB_bear_mid, "BearOB Mid", color = color.new(bearcolor, transparencyValue), style = label.style_label_center, textcolor = color.white, size = size.small)
        array.unshift(bear_mid_label, mid_label)

    if show_labels
        label3 = label.new(bar_index[ob_period], OB_bear_high, "BearOB High", color = color.new(bearcolor, transparencyValue), style = label.style_label_down, textcolor = color.white, size = size.small)
        label4 = label.new(bar_index[ob_period], OB_bear_low, "BearOB Low", color = color.new(bearcolor, transparencyValue), style = label.style_label_up, textcolor = color.white, size = size.small)
        array.unshift(bear_label, label3)
        array.unshift(bear_label, label4)

// Cleanup
if array.size(bull_line_high) > bull_channels
    line.delete(array.pop(bull_line_high))
    line.delete(array.pop(bull_line_low))
    label.delete(array.pop(bull_label))
    label.delete(array.pop(bull_label))
    label.delete(array.pop(bull_mid_label))

if array.size(bear_line_high) > bear_channels
    line.delete(array.pop(bear_line_high))
    line.delete(array.pop(bear_line_low))
    label.delete(array.pop(bear_label))
    label.delete(array.pop(bear_label))
    label.delete(array.pop(bear_mid_label))