SmartSkull 15 minutes

//version=5
indicator("LegendGPT – First 15m Extremes + Second 15m Breakout FVG + Alerts", overlay=true, max_boxes_count=500)

// SETTINGS
boxColor = input.color(color.new(color.gray, 85), "Opening Box Color")
fvgBullColor = input.color(color.new(color.green, 85), "Bullish FVG Color")
fvgBearColor = input.color(color.new(color.red, 85), "Bearish FVG Color")
sessionTZ = "America/New_York"
nasdaqOpenHour = 9
nasdaqOpenMinute = 30

// 15m data for box
time15_tf = request.security(syminfo.tickerid, "15", time, lookahead=barmerge.lookahead_on)
high15_tf = request.security(syminfo.tickerid, "15", high, lookahead=barmerge.lookahead_on)
low15_tf = request.security(syminfo.tickerid, "15", low, lookahead=barmerge.lookahead_on)

// First 15m candle start
isFirst15mActive = (hour(time15_tf, sessionTZ) == nasdaqOpenHour and minute(time15_tf, sessionTZ) == nasdaqOpenMinute)
isSecond15mActive = (hour(time15_tf, sessionTZ) == nasdaqOpenHour and minute(time15_tf, sessionTZ) == nasdaqOpenMinute + 15)

// STATE VARS
var box openingRangeBox = na
var float session1mHigh = na
var int session1mHighBar = na
var float session1mLow = na
var int session1mLowBar = na
var bool extremesMarked = false
var bool bullBreakout = false
var bool bearBreakout = false
var bool fvgDrawn = false
var box fvgBox = na
var label fvgFilledLabel = na

newDay = time("D", sessionTZ) != time("D", sessionTZ)[1]

// RESET DAILY
if newDay
if not na(openingRangeBox)
box.delete(openingRangeBox)
if not na(fvgBox)
box.delete(fvgBox)
if not na(fvgFilledLabel)
label.delete(fvgFilledLabel)
session1mHigh := na
session1mHighBar := na
session1mLow := na
session1mLowBar := na
extremesMarked := false
bullBreakout := false
bearBreakout := false
fvgDrawn := false

// Only run on 1-minute timeframe
if timeframe.multiplier == 1
// CREATE OPENING RANGE BOX for first 15m
if isFirst15mActive and na(openingRangeBox)
openingRangeBox := box.new(left=bar_index, top=high15_tf, right=bar_index + 15, bottom=low15_tf, bgcolor=boxColor, border_color=color.new(color.black, 90))

// Track highest/lowest 1m candle during first 15m
if isFirst15mActive
if na(session1mHigh)
session1mHigh := high
session1mHighBar := bar_index
session1mLow := low
session1mLowBar := bar_index
else
if high > session1mHigh
session1mHigh := high
session1mHighBar := bar_index
if low < session1mLow
session1mLow := low
session1mLowBar := bar_index

// When first 15m ends, mark extremes
if isFirst15mActive[1] and not isFirst15mActive and not extremesMarked
// Green box for highest 1m candle
box.new(left=session1mHighBar, top=session1mHigh, right=session1mHighBar + 1, bottom=session1mHigh, border_color=color.green, bgcolor=color.new(color.green, 80))
// Red box for lowest 1m candle
box.new(left=session1mLowBar, top=session1mLow, right=session1mLowBar + 1, bottom=session1mLow, border_color=color.red, bgcolor=color.new(color.red, 80))
extremesMarked := true

// SECOND 15m: Check breakout of high/low
if isSecond15mActive
// Bullish breakout
if not bullBreakout and high > session1mHigh
bullBreakout := true
bearBreakout := false
alert("LegendGPT: Bullish Breakout above first 15m high", alert.freq_once_per_bar)
// Bearish breakout
if not bearBreakout and low < session1mLow
bearBreakout := true
bullBreakout := false
alert("LegendGPT: Bearish Breakout below first 15m low", alert.freq_once_per_bar)

// After breakout in second 15m, look for first FVG
if isSecond15mActive and not fvgDrawn
// Bullish FVG condition
if bullBreakout and low > high[1]
fvgBox := box.new(left=bar_index - 1, top=high[1], right=bar_index, bottom=low, bgcolor=fvgBullColor, border_color=color.green)
fvgDrawn := true
alert("LegendGPT: Bullish FVG formed after breakout", alert.freq_once_per_bar)
// Bearish FVG condition
if bearBreakout and high < low[1]
fvgBox := box.new(left=bar_index - 1, top=high, right=bar_index, bottom=low[1], bgcolor=fvgBearColor, border_color=color.red)
fvgDrawn := true
alert("LegendGPT: Bearish FVG formed after breakout", alert.freq_once_per_bar)

// PERSISTENT FVG: delete when filled
if not na(fvgBox)
fvgTop = box.get_top(fvgBox)
fvgBottom = box.get_bottom(fvgBox)
if high >= fvgBottom and low <= fvgTop
box.delete(fvgBox)
fvgBox := na
fvgDrawn := false
if not na(fvgFilledLabel)
label.delete(fvgFilledLabel)
fvgFilledLabel := label.new(bar_index, close, text="FVG filled", style=label.style_label_center, color=color.blue, textcolor=color.white, size=size.tiny)
alert("LegendGPT: FVG filled (mitigation)", alert.freq_once_per_bar)