LTF_p02_BOOL

// This Pine Script® code is licensed under Apache-2.0
// SPDX-License-Identifier: Apache-2.0
// © PineForge contributors 2026
//
// Lower-TF probe 02 — bool array element type
//
// Purpose: ``request.security_lower_tf`` returning ``array<bool>``.
// Asserts the LTF synthesis path handles non-numeric element types
// (bool storage / count_true reduce). On 15m we pull 1m bars and tag
// each as bullish (close>open); entry triggers when at least 9 of 15
// sub-bars are bullish — i.e. >60% intrabar bull dominance.
//
// Trade shape: long-only. Entry on bull-bar majority + EMA filter; exit
// on bull-majority break (count <= 6). Yields ~20-50 trades on 36k bar
// ETH-USDT 15m window.
//
// TV setup: 15m chart, ETH-USDT-USDT, same window as
// data/ohlcv_ETH-USDT-USDT_15m.csv. Export trade list to tv_trades.csv.
//@version=6
strategy("PF lower-tf probe 02 - bool array", shorttitle="LTF_p02_BOOL", overlay=true,
     initial_capital=1000000,
     commission_type=strategy.commission.percent, commission_value=0, slippage=0,
     default_qty_type=strategy.fixed, default_qty_value=1, pyramiding=1,
     process_orders_on_close=false)

// 1m bull-bar flags from 15m chart.
ltfBullArr = request.security_lower_tf(syminfo.tickerid, "1", close > open)

int bullCount = 0
if array.size(ltfBullArr) > 0
    for i = 0 to array.size(ltfBullArr) - 1
        if array.get(ltfBullArr, i)
            bullCount := bullCount + 1

emaFast = ta.ema(close, 9)
emaSlow = ta.ema(close, 21)

bool entryCond = bullCount >= 9 and emaFast > emaSlow
bool exitCond  = bullCount <= 6 or emaFast < emaSlow

if entryCond and strategy.position_size == 0
    strategy.entry("L", strategy.long, qty=1, comment="bull-majority")
if exitCond and strategy.position_size > 0
    strategy.close("L", comment="bull-broken")