//@version=5
strategy("XAUUSD Scalping Candlestick Strategy", overlay=true, initial_capital=10000, default_qty_type=strategy.percent_of_equity, default_qty_value=10)

// --- Inputs ---
emaPeriod        = input.int(50, title="EMA Trend Filter Period")
atrPeriod        = input.int(14, title="ATR Period")
atrMultiplierSL  = input.float(1.5, title="ATR Stop Loss Multiplier")
riskReward       = input.float(1.5, title="Risk/Reward Ratio (TP Multiplier)")

// --- Indicators ---
emaValue = ta.ema(close, emaPeriod)
atrValue = ta.atr(atrPeriod)

// --- Price Action & Candlestick Analysis ---
barRange  = high - low
bodyRange = math.abs(close - open)

// Pin Bar Detection (Rejection Candle)
bullishPin = (barRange > 0) and ((math.min(open, close) - low) >= 0.55 * barRange) and ((high - math.max(open, close)) <= 0.25 * barRange)
bearishPin = (barRange > 0) and ((high - math.max(open, close)) >= 0.55 * barRange) and ((math.min(open, close) - low) <= 0.25 * barRange)

// Engulfing Pattern Detection
bullishEngulfing = (close[1] < open[1]) and (close > open) and (close >= open[1]) and (open <= close[1])
bearishEngulfing = (close[1] > open[1]) and (close < open) and (close <= open[1]) and (open >= close[1])

// --- Strategy Entry Rules ---
longCondition  = (close > emaValue) and (bullishPin or bullishEngulfing)
shortCondition = (close < emaValue) and (bearishPin or bearishEngulfing)

// --- Strategy Execution ---
if (longCondition and strategy.position_size == 0)
    slDistance = atrValue * atrMultiplierSL
    slPrice = close - slDistance
    tpPrice = close + (slDistance * riskReward)
    strategy.entry("Long", strategy.long)
    strategy.exit("Exit Long", "Long", stop=slPrice, limit=tpPrice)

if (shortCondition and strategy.position_size == 0)
    slDistance = atrValue * atrMultiplierSL
    slPrice = close + slDistance
    tpPrice = close - (slDistance * riskReward)
    strategy.entry("Short", strategy.short)
    strategy.exit("Exit Short", "Short", stop=slPrice, limit=tpPrice)

// --- Plotting ---
plot(emaValue, title="50 EMA Trend Filter", color=color.blue, linewidth=2)
plotshape(bullishPin or bullishEngulfing, title="Buy Signal", style=shape.triangleup, location=location.belowbar, color=color.green, size=size.small)
plotshape(bearishPin or bearishEngulfing, title="Sell Signal", style=shape.triangledown, location=location.abovebar, color=color.red, size=size.small)