M15 Liquidity Sweep Scalp

//@version=6
strategy("Doc03 M15 Liquidity Sweep Scalp - Project Adapted", overlay=true, pyramiding=0, initial_capital=10000)

// Source: user-provided strategy collection - strategy 3
// Logic summary:
// 1. Detect a large 15m range candle with balanced wicks.
// 2. In 15m uptrend, buy when price revisits the lower 75% area.
// 3. Stop around 30% area. Target projects part of the range upward.
// 4. This project version can run on 1m or 5m and approximates the original 1m execution.
// Compile confidence: 90/100. Profit confidence: 20/100.

htf = input.timeframe("15", "Range candle timeframe")
emaFastLen = input.int(9, "Trend EMA fast", minval=1)
emaSlowLen = input.int(50, "Trend EMA slow", minval=2)
bodyLookback = input.int(10, "Average body lookback", minval=2)
bodyFactor = input.float(1.0, "Large body factor", minval=0.1, step=0.1)
minWickBodyRatio = input.float(0.10, "Min wick/body ratio", minval=0.0, step=0.05)
maxWickImbalance = input.float(0.50, "Max wick imbalance", minval=0.0, step=0.05)
targetRangeMult = input.float(0.50, "Target above range", minval=0.1, step=0.1)

hOpen = request.security(syminfo.tickerid, htf, open[1])
hHigh = request.security(syminfo.tickerid, htf, high[1])
hLow = request.security(syminfo.tickerid, htf, low[1])
hClose = request.security(syminfo.tickerid, htf, close[1])
hEmaFast = request.security(syminfo.tickerid, htf, ta.ema(close, emaFastLen)[1])
hEmaSlow = request.security(syminfo.tickerid, htf, ta.ema(close, emaSlowLen)[1])
hAvgBody = request.security(syminfo.tickerid, htf, ta.sma(math.abs(close - open), bodyLookback)[1])

hBody = math.abs(hClose - hOpen)
hUpperWick = hHigh - math.max(hOpen, hClose)
hLowerWick = math.min(hOpen, hClose) - hLow
hRange = math.max(hHigh - hLow, syminfo.mintick)
wickDiff = math.abs(hUpperWick - hLowerWick)
wickMax = math.max(math.max(hUpperWick, hLowerWick), syminfo.mintick)

largeBody = hBody >= hAvgBody * bodyFactor
validWicks = hUpperWick >= hBody * minWickBodyRatio and hLowerWick >= hBody * minWickBodyRatio and wickDiff / wickMax <= maxWickImbalance
upTrend = hEmaFast > hEmaSlow
validRange = largeBody and validWicks and upTrend

entryLevel = hLow + hRange * 0.75
stopLevel = hLow + hRange * 0.30
targetLevel = hHigh + hRange * targetRangeMult

longSignal = strategy.position_size == 0 and validRange and close <= entryLevel and close > stopLevel

if longSignal
    strategy.entry("Long", strategy.long)

if strategy.position_size > 0
    strategy.exit("Long Range Exit", "Long", stop=stopLevel, limit=targetLevel)

if strategy.position_size > 0 and close < stopLevel
    strategy.close("Long")