My script

//version=5
indicator("LTF Multi-Condition BUY Signal (v5 clean)", overlay=true, max_labels_count=100, max_lines_count=100)

// ───────────────── INPUTS ─────────────────
pivot_len = input.int(4, "Pivot sensitivity (structure)", minval=2, maxval=12)
range_len = input.int(20, "Range lookback for breakout", minval=5)
htf_tf = input.timeframe("480", "HTF timeframe (8H+)")
reclaim_window = input.int(5, "Reclaim window (bars)", minval=1)
ema_fast_len = input.int(9, "EMA fast length")
ema_slow_len = input.int(21, "EMA slow length")
rsi_len = input.int(14, "RSI length")
rsi_pivot_len = input.int(4, "RSI pivot sensitivity")
rsi_div_lookback = input.int(30, "RSI divergence max lookback (bars)")
daily_vol_mult = input.float(1.0, "Daily volume vs SMA multiplier", step=0.1)
htf_vol_sma_len = input.int(20, "HTF volume SMA length")
require_reclaim = input.bool(true, "Require HTF reclaim")
use_aggressive_HL = input.bool(false, "Aggressive HL detection")

// ───────────────── BASE INDICATORS ─────────────────
emaFast = ta.ema(close, ema_fast_len)
emaSlow = ta.ema(close, ema_slow_len)
rsiVal = ta.rsi(close, rsi_len)

// ───────────────── DAILY CHECKS (VOLUME & OBV) ─────────────────
// Daily OBV and previous value
daily_obv = request.security(syminfo.tickerid, "D",
ta.cum(ta.change(close) > 0 ? volume : ta.change(close) < 0 ? -volume : 0))
daily_obv_prev = request.security(syminfo.tickerid, "D",
ta.cum(ta.change(close) > 0 ? volume : ta.change(close) < 0 ? -volume : 0)[1])

// Daily volume & SMA
daily_vol = request.security(syminfo.tickerid, "D", volume)
daily_vol_sma = request.security(syminfo.tickerid, "D", ta.sma(volume, 20))

daily_vol_ok = not na(daily_vol) and not na(daily_vol_sma) and daily_vol > daily_vol_sma * daily_vol_mult
daily_obv_ok = not na(daily_obv) and not na(daily_obv_prev) and daily_obv > daily_obv_prev

// ───────────────── HTF SUPPORT / RECLAIM ─────────────────
htf_high = request.security(syminfo.tickerid, htf_tf, high)
htf_low = request.security(syminfo.tickerid, htf_tf, low)
htf_close = request.security(syminfo.tickerid, htf_tf, close)
htf_volume = request.security(syminfo.tickerid, htf_tf, volume)
htf_vol_sma = request.security(syminfo.tickerid, htf_tf, ta.sma(volume, htf_vol_sma_len))

htf_bull_reject = not na(htf_high) and not na(htf_low) and not na(htf_close) and (htf_close - htf_low) > (htf_high - htf_close)
htf_vol_confirm = not na(htf_volume) and not na(htf_vol_sma) and htf_volume > htf_vol_sma

htf_support_level = (htf_bull_reject and htf_vol_confirm) ? htf_low : na

// Reclaim: LTF close back above HTF support within N bars
reclaimed_now = not na(htf_support_level) and close > htf_support_level and ta.barssince(close <= htf_support_level) <= reclaim_window
htf_reclaim_ok = require_reclaim ? reclaimed_now : true

// ───────────────── STRUCTURE: BOS & HL (CoC) ─────────────────
swingHighVal = ta.pivothigh(high, pivot_len, pivot_len)
swingLowVal = ta.pivotlow(low, pivot_len, pivot_len)

swingHighCond = not na(swingHighVal)
swingLowCond = not na(swingLowVal)

lastSwingHigh = ta.valuewhen(swingHighCond, swingHighVal, 0)
prevSwingHigh = ta.valuewhen(swingHighCond, swingHighVal, 1)
lastSwingLow = ta.valuewhen(swingLowCond, swingLowVal, 0)
prevSwingLow = ta.valuewhen(swingLowCond, swingLowVal, 1)

bos_bull = not na(prevSwingHigh) and close > prevSwingHigh

hl_confirm = not na(lastSwingLow) and not na(prevSwingLow) and lastSwingLow > prevSwingLow and ta.barssince(swingLowCond) <= 30
if use_aggressive_HL
hl_confirm := hl_confirm or (low > low[3] and ta.barssince(swingLowCond) <= 12)

// ───────────────── RSI BULLISH DIVERGENCE ─────────────────
rsiLowVal = ta.pivotlow(rsiVal, rsi_pivot_len, rsi_pivot_len)
rsiLowCond = not na(rsiLowVal)

priceAtRsiLowA = ta.valuewhen(rsiLowCond, low[rsi_pivot_len], 0)
priceAtRsiLowB = ta.valuewhen(rsiLowCond, low[rsi_pivot_len], 1)
rsiLowA = ta.valuewhen(rsiLowCond, rsiVal[rsi_pivot_len], 0)
rsiLowB = ta.valuewhen(rsiLowCond, rsiVal[rsi_pivot_len], 1)

rsi_div_ok = not na(priceAtRsiLowA) and not na(priceAtRsiLowB) and not na(rsiLowA) and not na(rsiLowB) and
(priceAtRsiLowA < priceAtRsiLowB) and (rsiLowA > rsiLowB) and ta.barssince(rsiLowCond) <= rsi_div_lookback

// ───────────────── RANGE BREAKOUT ─────────────────
range_high = ta.highest(high, range_len)
range_breakout = ta.crossover(close, range_high)

// ───────────────── EMA CROSS / TREND ─────────────────
ema_cross_happened = ta.crossover(emaFast, emaSlow)
ema_trend_ok = emaFast > emaSlow

// ───────────────── FINAL BUY CONDITION ─────────────────
all_price_checks = bos_bull and hl_confirm and rsi_div_ok and range_breakout
all_filter_checks = ema_trend_ok and ema_cross_happened and daily_vol_ok and daily_obv_ok and htf_reclaim_ok

buy_condition = all_price_checks and all_filter_checks

// ───────────────── PLOTS & ALERT ─────────────────
plotshape(
buy_condition,
title = "BUY Signal",
location = location.belowbar,
style = shape.labelup,
text = "BUY",
textcolor = color.white,
color = color.green,
size = size.small)

plot(htf_support_level, title="HTF Support", color=color.new(color.green, 0), linewidth=2, style=plot.style_linebr)

alertcondition(buy_condition, title="LTF BUY Signal", message="LTF BUY Signal on {{ticker}} ({{interval}}) — all conditions met")