ICT Silver Bullet London Session Strategy

//@version=5
strategy("ICT Silver Bullet London Strategy", overlay=true, initial_capital=10000, default_qty_type=strategy.percent_of_equity, default_qty_value=1)

// Inputs
sessionTime = input.session("0800-1000:1234567", "London Silver Bullet Session (UTC)")
useRiskFilter = input.bool(true, "Avoid High Impact News Times")
slPips = input.float(7.0, "Stop Loss Buffer (Pips)")
rrRatio = input.float(2.0, "Risk to Reward Ratio")

// Time check
inSession = not na(time(timeframe.period, sessionTime, "UTC"))

// Identify Session Range (Asian High/Low as reference)
var float asianHigh = na
var float asianLow = na

newDay = ta.change(time("D")) != 0
if newDay
    asianHigh := high
    asianLow := low
else
    asianHigh := math.max(nz(asianHigh, high), high)
    asianLow := math.min(nz(asianLow, low), low)

// Plot Session Box
var box sessionBox = na
if inSession and not inSession[1]
    sessionBox := box.new(bar_index, high, bar_index, low, color=color.new(color.blue, 90), border_color=color.blue)
else if inSession
    box.set_right(sessionBox, bar_index)

// FVG Detection Logic
fvgBullish = low > high[2] and close[1] > high[2]
fvgBearish = high < low[2] and close[1] < low[2]

// Execution Logic
longCondition = inSession and fvgBullish and close > open
shortCondition = inSession and fvgBearish and close < open

if longCondition and strategy.position_size == 0
    entryPrice = close
    slPrice = entryPrice - (slPips * 0.0001)
    tpPrice = entryPrice + ((entryPrice - slPrice) * rrRatio)
    strategy.entry("SilverBullet LE", strategy.long)
    strategy.exit("Exit LE", "SilverBullet LE", stop=slPrice, limit=tpPrice)

if shortCondition and strategy.position_size == 0
    entryPrice = close
    slPrice = entryPrice + (slPips * 0.0001)
    tpPrice = entryPrice - ((slPrice - entryPrice) * rrRatio)
    strategy.entry("SilverBullet SE", strategy.short)
    strategy.exit("Exit SE", "SilverBullet SE", stop=slPrice, limit=tpPrice)

// Plotting
plotshape(longCondition, title="Bullish FVG Signal", style=shape.triangleup, location=location.belowbar, color=color.green, size=size.small)
plotshape(shortCondition, title="Bearish FVG Signal", style=shape.triangledown, location=location.abovebar, color=color.red, size=size.small)