Zen Open CSC Bars

//@version=5
indicator("Zen Open CSC Bars V9", overlay=true)

// === INPUTS ===
numBarsToCheck = input.int(2, "Bars to Check", minval=2, maxval=9)
showLabels = input.bool(true, "Show Bull/Bear Labels")
showSpikeLabel = input.bool(true, "Show Spike Label on Chart", group="Display")
colourBars = input.bool(true, "Colour Bars")
lookbackPeriod = input.int(8, "ABR Lookback Period", minval=1)

// EMA Settings
showEMA20 = input.bool(true, "Show 20 EMA", group="EMAs")
showEMA200 = input.bool(true, "Show 200 EMA", group="EMAs")

// Alert Settings
alertOnClose = input.bool(true, "Alert on Bar Close Only", group="Alerts", tooltip="Recommended ON to avoid repainting alerts intrabar")

// === NEW DAY DETECTION ===
new_day = ta.change(time("D")) != 0
bars_since_new_day = ta.barssince(new_day)
in_session = bars_since_new_day >= 0

// === BAR TYPE ===
is_bull = close > open
is_bear = close < open

// === BAR RANGE CALCULATIONS ===
bar_range = high - low
averageBarRange = ta.sma(bar_range, lookbackPeriod)
barRangeMultiple = averageBarRange > 0 ? bar_range / averageBarRange : 0

// === CSC COUNTING ===
var int bullishBars = 0
var int bearishBars = 0

if new_day
    bullishBars := 0
    bearishBars := 0

if bars_since_new_day < numBarsToCheck and is_bull
    bullishBars += 1
if bars_since_new_day < numBarsToCheck and is_bear
    bearishBars += 1

// === DETECTION CONDITIONS ===
bullCSC = bullishBars == numBarsToCheck and bars_since_new_day == numBarsToCheck - 1
bearCSC = bearishBars == numBarsToCheck and bars_since_new_day == numBarsToCheck - 1

// === LABELS ===
symbol_size = size.large

if showLabels
    if bullCSC
        label.new(bar_index, high, "🟢", color=color.green, size=symbol_size, textcolor=color.white, style=label.style_label_down, yloc=yloc.abovebar)
    if bearCSC
        label.new(bar_index, high, "🔴", color=color.red, size=symbol_size, textcolor=color.white, style=label.style_label_down, yloc=yloc.abovebar)

// === BAR COLOURING ===
color barcolour = na
if colourBars
    barcolour := bullishBars == numBarsToCheck and bars_since_new_day < numBarsToCheck ? color.green :
                 bearishBars == numBarsToCheck and bars_since_new_day < numBarsToCheck ? color.red : na
barcolor(barcolour)

// === ALERTCONDITIONS (manual alert creation in TV UI) ===
alertcondition(bullCSC, title="Bullish CSC Detected", message="Bullish CSC pattern detected on {{ticker}} {{interval}} at {{close}}")
alertcondition(bearCSC, title="Bearish CSC Detected", message="Bearish CSC pattern detected on {{ticker}} {{interval}} at {{close}}")
alertcondition(bullCSC or bearCSC, title="Any CSC Detected", message="CSC pattern detected on {{ticker}} {{interval}} at {{close}}")

// === DYNAMIC ALERT() CALLS (fires on "Any alert() function call") ===
alertTrigger = alertOnClose ? barstate.isconfirmed : true

if bullCSC and alertTrigger
    alert("🟢 Bullish CSC on " + syminfo.ticker + " " + timeframe.period + " @ " + str.tostring(close, format.mintick), alert.freq_once_per_bar_close)

if bearCSC and alertTrigger
    alert("🔴 Bearish CSC on " + syminfo.ticker + " " + timeframe.period + " @ " + str.tostring(close, format.mintick), alert.freq_once_per_bar_close)

// === TOTAL SPIKE LOGIC (ALL CONSECUTIVE BARS) ===
var int streakLength = 0
var float spikeHigh = na
var float spikeLow = na
var bool spikePrinted = false
var bool isBullStreak = na
var float currentTotalSpikeSize = na
var bool spikeCalculated = false

if new_day
    streakLength := 0
    spikeHigh := na
    spikeLow := na
    spikePrinted := false
    isBullStreak := na
    currentTotalSpikeSize := na
    spikeCalculated := false

if in_session and not spikeCalculated
    currentBull = is_bull
    currentBear = is_bear
    continuing = na(isBullStreak) ? true : (isBullStreak ? currentBull : currentBear)

    if continuing
        streakLength += 1
        spikeHigh := na(spikeHigh) ? high : math.max(spikeHigh, high)
        spikeLow := na(spikeLow) ? low : math.min(spikeLow, low)
        if na(isBullStreak)
            isBullStreak := currentBull ? true : false
    else
        if streakLength >= numBarsToCheck
            spikeRange = spikeHigh - spikeLow
            currentTotalSpikeSize := spikeRange
            spikeCalculated := true

            if showSpikeLabel and not spikePrinted
                label.new(bar_index[1], spikeHigh, "Total Spike: " + str.tostring(spikeRange, format.mintick), style=label.style_label_down, textcolor=color.black, color=color.new(color.white, 100), size=size.normal)
                spikePrinted := true

// === CONSECUTIVE SPIKE (FIRST 2 BARS ONLY) ===
var float bar1High = na
var float bar1Low = na
var float bar2High = na
var float bar2Low = na
var float consecutiveSpikeSize = na

if new_day
    bar1High := na
    bar1Low := na
    bar2High := na
    bar2Low := na
    consecutiveSpikeSize := na

if bars_since_new_day == 0
    bar1High := high
    bar1Low := low

if bars_since_new_day == 1
    bar2High := high
    bar2Low := low
    consecSpikeHigh = math.max(bar1High, bar2High)
    consecSpikeLow = math.min(bar1Low, bar2Low)
    consecutiveSpikeSize := consecSpikeHigh - consecSpikeLow

// === EMAs ===
ema20 = ta.ema(close, 20)
ema200 = ta.ema(close, 200)

plot(showEMA20 ? ema20 : na, "EMA 20", color=color.blue, linewidth=2)
plot(showEMA200 ? ema200 : na, "EMA 200", color=color.red, linewidth=2)

// === DATA WINDOW PLOTS ===
cscBarType = bullishBars == numBarsToCheck and bars_since_new_day < numBarsToCheck ? 1 :
             bearishBars == numBarsToCheck and bars_since_new_day < numBarsToCheck ? -1 : 0

totalSpikeSize = not na(currentTotalSpikeSize) ? currentTotalSpikeSize : 0
consecSpikeSize = not na(consecutiveSpikeSize) ? consecutiveSpikeSize : 0

plot(cscBarType, "CSC Bar Type", color=color.new(color.blue, 100), display=display.data_window)
plot(totalSpikeSize, "Total Spike (pts)", color=color.new(color.orange, 100), display=display.data_window)
plot(consecSpikeSize, "Consecutive Spike (pts)", color=color.new(color.purple, 100), display=display.data_window)
plot(bar_range, "Bar Range", color=color.new(color.gray, 100), display=display.data_window)
plot(averageBarRange, "ABR (8)", color=color.new(color.yellow, 100), display=display.data_window)
plot(barRangeMultiple, "Range Multiple", color=color.new(color.green, 100), display=display.data_window)
plot(ema20, "EMA 20", color=color.new(color.blue, 100), display=display.data_window)
plot(ema200, "EMA 200", color=color.new(color.red, 100), display=display.data_window)