RSI Divergence Strategy - Eterna MCP

//@version=5
strategy("RSI Divergence Strategy - Eterna MCP", 
         shorttitle="RSI Div",
         overlay=false,
         default_qty_type=strategy.percent_of_equity,
         default_qty_value=100,
         initial_capital=1000)

// ============================================
// PARAMETERS
// ============================================
rsiLength = input.int(14, "RSI Length", minval=1)
rsiOverbought = input.int(70, "RSI Overbought", minval=50, maxval=100)
rsiOversold = input.int(30, "RSI Oversold", minval=0, maxval=50)
pivotLookback = input.int(5, "Pivot Lookback", minval=1)
leverageSize = input.float(5.0, "Leverage", minval=1, maxval=100)
positionSize = input.float(0.01, "Position Size", minval=0.001, maxval=1)

// ============================================
// RSI CALCULATION
// ============================================
rsi = ta.rsi(close, rsiLength)

// ============================================
// DIVERGENCE DETECTION
// ============================================
// Pivot highs and lows
pivotHigh = ta.pivothigh(rsi, pivotLookback, pivotLookback)
pivotLow = ta.pivotlow(rsi, pivotLookback, pivotLookback)
pricePivotHigh = ta.pivothigh(high, pivotLookback, pivotLookback)
pricePivotLow = ta.pivotlow(low, pivotLookback, pivotLookback)

// Store pivot points
var float lastRsiHigh = na
var float lastPriceHigh = na
var float lastRsiLow = na
var float lastPriceLow = na

if not na(pivotHigh)
    lastRsiHigh := pivotHigh
    lastPriceHigh := pricePivotHigh

if not na(pivotLow)
    lastRsiLow := pivotLow
    lastPriceLow := pricePivotLow

// Bullish divergence: price makes lower low, RSI makes higher low
bullishDiv = not na(lastRsiLow) and not na(lastPriceLow) and 
             low < lastPriceLow and rsi > lastRsiLow and 
             rsi < rsiOversold

// Bearish divergence: price makes higher high, RSI makes lower high
bearishDiv = not na(lastRsiHigh) and not na(lastPriceHigh) and 
             high > lastPriceHigh and rsi < lastRsiHigh and 
             rsi > rsiOverbought

// ============================================
// STRATEGY LOGIC
// ============================================
if bullishDiv and strategy.position_size == 0
    strategy.entry("Long", strategy.long)
    alert('{"action":"buy","symbol":"' + syminfo.ticker + '","size":' + str.tostring(positionSize) + ',"leverage":' + str.tostring(leverageSize) + '}', alert.freq_once_per_bar_close)

if bearishDiv and strategy.position_size == 0
    strategy.entry("Short", strategy.short)
    alert('{"action":"sell","symbol":"' + syminfo.ticker + '","size":' + str.tostring(positionSize) + ',"leverage":' + str.tostring(leverageSize) + '}', alert.freq_once_per_bar_close)

// Exit on opposite signal
if bearishDiv and strategy.position_size > 0
    strategy.close("Long")

if bullishDiv and strategy.position_size < 0
    strategy.close("Short")

// ============================================
// PLOTTING
// ============================================
plot(rsi, "RSI", color=color.blue, linewidth=2)
hline(rsiOverbought, "Overbought", color=color.red, linestyle=hline.style_dashed)
hline(rsiOversold, "Oversold", color=color.green, linestyle=hline.style_dashed)
hline(50, "Midline", color=color.gray, linestyle=hline.style_dotted)

plotshape(bullishDiv, "Bullish Divergence", shape.triangleup, location.bottom, color.green, size=size.small)
plotshape(bearishDiv, "Bearish Divergence", shape.triangledown, location.top, color.red, size=size.small)