please add price line // This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © JacobMagleby

//@version=5

indicator(title = "Volume Profile OB", shorttitle = "Volume Profile OB", overlay = true, max_boxes_count = 500, max_lines_count = 500)

// { <CONSTANTS>

OB_BORDER_WIDTH = 2

// } <CONSTANTS>



// { <INPUTS>

tuning   = input.int(
 title   = "Tuning",
  defval = 7,
   group = "Main Settings")

amountOfBoxes = input.int(
 title        = "Amount Of Grids",
  defval      = 10,
   group      = "Main Settings")

mitigationMethod = input.string(
 title           = "Mitigation Method",
  defval         = "Close Engulfs 100% Of Order Block",
   group         = "Main Settings",
     inline      = "mitigation",
      options    = [
       "Close Engulfs 100% Of Order Block",
         "Close Engulfs 75% Of Order Block",
          "Close Engulfs 50% Of Order Block",
           "Close Engulfs 25% Of Order Block",
             "Wick Engulfs 100% Of Order Block",
              "Wick Engulfs 75% Of Order Block",
               "Wick Engulfs 50% Of Order Block",
                 "Wick Engulfs 25% Of Order Block"])

obHighVolumeColor = input.color(
 title            = "",
  defval          = color.new(color.yellow, 35),
   group          = "Color Settings", inline = "colors")

obLowVolumeColor = input.color(
 title           = "",
  defval         = color.new(color.orange, 35),
   group         = "Color Settings",
     inline      = "colors")

obBorderColor = input.color(
 title        = "",
  defval      = color.new(color.gray, 85),
   group      = "Color Settings",
     inline   = "colors")
   
obLinefillColor = input.color(
 title          = "",
  defval        = color.new(color.gray, 75),
   group        = "Color Settings",
     inline     = "colors")

// } <INPUTS>



// { <FUNCTIONS>

checkObCondition(set)=>
    bear = false
    for i = tuning - 1 to 0
        start = tuning - 1
        if i == start
            if close[i] <= open[i]
                break
        else
            if close[i] > open[i]
                break
            
            if i == 0
                bear := true

    bull = false
    for i = tuning - 1 to 0
        start = tuning - 1
        if i == start
            if close[i] >= open[i]
                break
        else
            if close[i] < open[i]
                break
            
            if i == 0
                bull := true
    
    [bear, bull]

// } <FUNCTIONS>



// { <USER DEFINED TYPES>

type orderBlock
    line topLine
    line botLine
    linefill bgFill
    array<box> boxArray = na
    array<float> boxVolume = na
    float topValue
    float botValue
    int leftTime
    int rightTime
    string direction
    float highestTop = na
    float highestBot = na

method generateBorderLines(orderBlock self, topValue, botValue)=>
    newTopLine = line.new(x1 = self.leftTime, y1 = topValue, x2 = time, y2 = topValue, xloc = xloc.bar_time, extend = extend.none, color = obBorderColor, style = line.style_solid, width = OB_BORDER_WIDTH)
    newbotLine = line.new(x1 = self.leftTime, y1 = botValue, x2 = time, y2 = botValue, xloc = xloc.bar_time, extend = extend.none, color = obBorderColor, style = line.style_solid, width = OB_BORDER_WIDTH)
    newlinefill = linefill.new(newTopLine, newbotLine, obLinefillColor)
    self.topLine := newTopLine
    self.botLine := newbotLine
    self.bgFill := newlinefill

method generateVolume(orderBlock self, topValue, botValue, vArray, hArray, lArray)=>
    newVolumeArray = self.boxVolume
    startingValue = topValue
    increment = (topValue - botValue) / amountOfBoxes
    for i = 0 to amountOfBoxes - 1
        topOfGrid = startingValue - (increment * i)
        botOfGrid = startingValue - (increment * (i + 1))
        if array.size(vArray) > 0 and array.size(hArray) > 0 and array.size(lArray) > 0
            for j = 0 to array.size(vArray) - 1
                candleVolume = array.get(vArray, j)
                candleHigh = array.get(hArray, j)
                candleLow = array.get(lArray, j)
                ltfDiff = candleHigh - candleLow

                
                if candleLow <= topOfGrid and candleHigh >= botOfGrid
                    topRegister = math.min(candleHigh, topOfGrid)
                    botRegister = math.max(candleLow, botOfGrid)

                    registerDiff = topRegister - botRegister
                    registerVolume = registerDiff / ltfDiff
                    array.set(newVolumeArray, i, array.get(newVolumeArray, i) + nz(registerVolume * candleVolume))

    array.sum(newVolumeArray)

method generateBoxes(orderBlock self, topValue, botValue, leftValue, rightValue)=>
    newBoxesArray = array.new_box()

    highestVolume = array.max(self.boxVolume)
    lowestVolume = array.min(self.boxVolume)
    timeLength = self.rightTime - self.leftTime
    timeRatio = timeLength / highestVolume

    startingValue = topValue
    increment = (topValue - botValue) / amountOfBoxes
    for i = 0 to amountOfBoxes - 1
        topOfGrid = startingValue - (increment * i)
        botOfGrid = startingValue - (increment * (i + 1))
        color_ = color.from_gradient(array.get(self.boxVolume, i), lowestVolume, highestVolume, obLowVolumeColor, obHighVolumeColor)
        newbox = box.new(left = self.leftTime, top = topOfGrid, right = self.leftTime + math.round(array.get(self.boxVolume, i) * timeRatio), bottom = botOfGrid, border_color = color_, border_width = 2, xloc = xloc.bar_time, bgcolor = color_, extend = extend.none)
        array.push(newBoxesArray, newbox)
    
    self.boxArray := newBoxesArray

method updateBoxes(orderBlock self, currentTime)=>
    self.rightTime := currentTime

    highestVolume = array.max(self.boxVolume)
    lowestVolume = array.min(self.boxVolume)
    timeLength = self.rightTime - self.leftTime
    timeRatio = timeLength / highestVolume

    for i = 0 to amountOfBoxes - 1
        box.set_right(array.get(self.boxArray, i), self.leftTime + math.round(array.get(self.boxVolume, i) * timeRatio))
        if array.get(self.boxVolume, i) == highestVolume
            self.highestTop := box.get_top(array.get(self.boxArray, i))
            self.highestBot := box.get_bottom(array.get(self.boxArray, i))
    
    line.set_x2(self.topLine, self.rightTime)
    line.set_x2(self.botLine, self.rightTime)

method wipeBlock(orderBlock self)=>
    line.delete(self.topLine)
    line.delete(self.botLine)
    linefill.delete(self.bgFill)
    for i = array.size(self.boxArray) - 1 to 0
        selectedBox = array.get(self.boxArray, i)
        box.delete(selectedBox)

// } <USER DEFINED TYPES>



// { <CALCULATIONS>

bool bullRealtimeTouch = false
bool bearRealtimeTouch = false
bool bullishRejection = false
bool bearishRejection = false
bool newBull = false
bool newBear = false

rawTimeframe = timeframe.isdaily ? 1440 : timeframe.isweekly ? 1440 * 7 : timeframe.ismonthly ? 1440 * 30 : str.tonumber(timeframe.period)
fixedTimeframe = math.round(rawTimeframe / 15) < 1 ? "30S" : str.tostring(math.round(rawTimeframe / 15))
[h, l, v] = request.security_lower_tf(syminfo.tickerid, fixedTimeframe, [high, low, volume])

[bear, bull] = checkObCondition(tuning)

var array<orderBlock> orderBlockArray = array.new<orderBlock>(0)

if not na(bar_index[tuning]) and barstate.isconfirmed
    topValue = high[tuning - 1]
    botValue = low[tuning - 1]
    leftValue = time[tuning - 1]
    rightValue = time
    if bull or bear
        newBull := bull ? true : newBull
        newBear := bear ? true : newBear
        neworderBlock = orderBlock.new(topValue = topValue, botValue = botValue, leftTime = leftValue, rightTime = rightValue, boxVolume = array.new_float(amountOfBoxes, 0), direction = bull ? "Bull" : "Bear")
        neworderBlock.generateBorderLines(neworderBlock.topValue, neworderBlock.botValue)
        vol = neworderBlock.generateVolume(neworderBlock.topValue, neworderBlock.botValue, v[tuning - 1], h[tuning - 1], l[tuning - 1])
        neworderBlock.generateBoxes(neworderBlock.topValue, neworderBlock.botValue, neworderBlock.leftTime, neworderBlock.rightTime)
        if vol == 0
            neworderBlock.wipeBlock()
        else
            array.push(orderBlockArray, neworderBlock)

maxBlocks = math.floor(500 / amountOfBoxes)
if array.size(orderBlockArray) > 0
    for i = array.size(orderBlockArray) - 1 to 0
        block = array.get(orderBlockArray, i)
        block.updateBoxes(time)
        if close <= block.highestTop and close >= block.highestBot
            if block.direction == "Bull"
                bullRealtimeTouch := true
            else
                bearRealtimeTouch := true

        if low <= block.highestBot and close >= block.highestBot and block.direction == "Bull" and barstate.isconfirmed
            bullishRejection := true
        
        if high >= block.highestTop and close <= block.highestTop and block.direction == "Bear" and barstate.isconfirmed
            bearishRejection := true

        blockDifference = block.topValue - block.botValue
        startingValue = block.direction == "Bull" ? block.topValue : block.botValue
        sourceToUse = str.contains(mitigationMethod, "Close") ? close : 
         (block.direction == "Bull" ? low : high)
        incrementMultiplier = 
         str.contains(mitigationMethod, "100%") ? math.abs(blockDifference * 1) :
          str.contains(mitigationMethod, "75%") ? math.abs(blockDifference * .75) :
           str.contains(mitigationMethod, "50%") ? math.abs(blockDifference * .50) : .25
        incrementMultiplier *= block.direction == "Bull" ? -1 : 1 
        breakValue = startingValue + incrementMultiplier

        bullBreak = block.direction == "Bull" and sourceToUse < breakValue
        bearBreak = block.direction == "Bear" and sourceToUse > breakValue
        if (bullBreak or bearBreak or i < (array.size(orderBlockArray) - 1 - maxBlocks)) and barstate.isconfirmed
            block.wipeBlock()
            array.remove(orderBlockArray, i)

// } <CALCULATIONS>



// { <ALERTS>

alertcondition(condition = bullRealtimeTouch, title = "Price Inside Bullish Max Volume Zone")
alertcondition(condition = bearRealtimeTouch, title = "Price Inside Bearish Max Volume Zone")
alertcondition(condition = bullishRejection, title = "Confirmed Rejection Off Bullish Max Volume Zone")
alertcondition(condition = bearishRejection, title = "Confirmed Rejection Off Bearish Max Volume Zone")
alertcondition(condition = newBull, title = "New Bullish Order Block")
alertcondition(condition = newBear, title = "New Bearish Order Block")

// } <ALERTS>