Ichimoku Cloud - Eterna

//@version=5
strategy("Ichimoku Cloud - Eterna", 
         overlay=true, 
         initial_capital=10000,
         default_qty_type=strategy.percent_of_equity, 
         default_qty_value=10,
         commission_type=strategy.commission.percent,
         commission_value=0.075)

// ==================== Parameters ====================
conversionPeriod = input.int(9, "Conversion Line Period", minval=1)
basePeriod = input.int(26, "Base Line Period", minval=1)
laggingSpan2Period = input.int(52, "Lagging Span 2 Period", minval=1)
displacement = input.int(26, "Displacement", minval=1)
leverage = input.int(5, "Leverage", minval=1, maxval=100)
positionSize = input.float(0.01, "Position Size", minval=0.001, step=0.001)

webhookMessage = input.string('{"action":"{{strategy.order.action}}", "symbol":"{{ticker}}", "size":' + str.tostring(positionSize) + ', "leverage":' + str.tostring(leverage) + '}', 
                               "Webhook JSON", group="Webhook")

// ==================== Ichimoku Calculation ====================
donchian(len) => math.avg(ta.lowest(len), ta.highest(len))

conversionLine = donchian(conversionPeriod)
baseLine = donchian(basePeriod)
leadLine1 = math.avg(conversionLine, baseLine)
leadLine2 = donchian(laggingSpan2Period)

// Displaced lines for cloud
leadLine1Displaced = leadLine1[displacement]
leadLine2Displaced = leadLine2[displacement]

// ==================== Entry Conditions ====================
// Strong bullish: Price above cloud, conversion above base, bullish cloud
priceAboveCloud = close > math.max(leadLine1Displaced, leadLine2Displaced)
bullishTK = ta.crossover(conversionLine, baseLine)
bullishCloud = leadLine1Displaced > leadLine2Displaced

longCondition = priceAboveCloud and bullishTK and bullishCloud

// Strong bearish: Price below cloud, conversion below base, bearish cloud
priceBelowCloud = close < math.min(leadLine1Displaced, leadLine2Displaced)
bearishTK = ta.crossunder(conversionLine, baseLine)
bearishCloud = leadLine1Displaced < leadLine2Displaced

shortCondition = priceBelowCloud and bearishTK and bearishCloud

// Exit when TK crosses opposite direction
exitLong = ta.crossunder(conversionLine, baseLine)
exitShort = ta.crossover(conversionLine, baseLine)

// ==================== Strategy Execution ====================
if longCondition
    strategy.entry("Long", strategy.long, alert_message=str.replace(webhookMessage, "{{strategy.order.action}}", "buy"))

if shortCondition
    strategy.entry("Short", strategy.short, alert_message=str.replace(webhookMessage, "{{strategy.order.action}}", "sell"))

if exitLong
    strategy.close("Long", alert_message='{"action":"close", "symbol":"{{ticker}}"}')

if exitShort
    strategy.close("Short", alert_message='{"action":"close", "symbol":"{{ticker}}"}')

// ==================== Plotting ====================
plot(conversionLine, "Conversion Line (Tenkan)", color=color.blue, linewidth=1)
plot(baseLine, "Base Line (Kijun)", color=color.red, linewidth=1)

p1 = plot(leadLine1, "Lead 1 (Senkou A)", color=color.new(color.green, 0), offset=displacement)
p2 = plot(leadLine2, "Lead 2 (Senkou B)", color=color.new(color.red, 0), offset=displacement)

// Cloud fill
fill(p1, p2, color=leadLine1 > leadLine2 ? color.new(color.green, 90) : color.new(color.red, 90))

plotshape(longCondition, "Long", shape.triangleup, location.belowbar, color.green, size=size.normal)
plotshape(shortCondition, "Short", shape.triangledown, location.abovebar, color.red, size=size.normal)