// This Pine Script™ code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © Halving32 

//    _    _       _       _             ____ ___  
//   | |  | |     | |     (_)           |___ \__ \ 
//   | |__| | __ _| |_   ___ _ __   __ _  __) | ) |
//   |  __  |/ _` | \ \ / / | '_ \ / _` ||__ < / / 
//   | |  | | (_| | |\ V /| | | | | (_| |___) / /_ 
//   |_|  |_|\__,_|_| \_/ |_|_| |_|\__, |____/____|
//                                  __/ |          
//                                 |___/           

//@version=6
indicator("Binance FR (Estilo Dual)", shorttitle="Binance FR Dual", format=format.percent, precision=6, overlay=false)

// --- Entradas ---
interestRate = input.float(0.01, "Tasa Base (%)", step=0.01) / 100
manualSymbol = input.string("", "Símbolo Manual")
noiseReduction = input.float(0.85, "Factor de Suavizado", minval=0.1, maxval=1.0)
barOffset = input.int(1, "Desplazamiento (Offset)", minval=-5, maxval=5)

// NUEVO: Selector de Estilo
chartStyle = input.string("Original (Barras)", "Estilo de Gráfico", options=["Original (Barras)", "Estilo Binance (Línea)"])

// --- Datos ---
cleanTicker(ticker) =>
    string[] parts = str.split(ticker, ".")
    array.get(parts, 0)
string baseSymbol = manualSymbol != "" ? manualSymbol : cleanTicker(syminfo.ticker)
string premiumTicker = "BINANCE:" + baseSymbol + "_PREMIUM"

// --- Cálculo Intrabar ---
float[] internalCandles = request.security_lower_tf(premiumTicker, "1", close, ignore_invalid_symbol=true)

float avgPremium = na
if not na(internalCandles) and array.size(internalCandles) > 0
    avgPremium := array.median(internalCandles)
else
    avgPremium := request.security(premiumTicker, timeframe.period, close)

// --- Fórmula ---
float fundingRate = na

if not na(avgPremium)
    float diff = interestRate - avgPremium
    float clampedDiff = math.max(-0.05/100, math.min(diff, 0.05/100))
    
    float rawValue = (avgPremium + clampedDiff) * 100
    
    if math.abs(rawValue) > 0.01
        fundingRate := rawValue * noiseReduction
    else
        fundingRate := rawValue

// --- Visualización Condicional ---
// 1. Estilo Original (Barras)
// Solo se dibuja si seleccionas "Original (Barras)"
color barColor = fundingRate >= 0 ? color.teal : color.maroon
if math.abs(fundingRate) > 0.03
    barColor := fundingRate > 0 ? color.lime : color.red

plot(chartStyle == "Original (Barras)" ? fundingRate : na, "FR Barras", color=barColor, style=plot.style_columns, linewidth=15, offset=barOffset)

// 2. Estilo Binance (Línea Amarilla con Puntos)
// Solo se dibuja si seleccionas "Estilo Binance (Línea)"
// Color amarillo típico de Binance (#F0B90B)
color binanceYellow = #F0B90B 
plot(chartStyle == "Estilo Binance (Línea)" ? fundingRate : na, "FR Línea", color=binanceYellow, style=plot.style_linebr, linewidth=2, offset=barOffset)
// Dibujamos los círculos (puntos) sobre la línea
plot(chartStyle == "Estilo Binance (Línea)" ? fundingRate : na, "FR Puntos", color=binanceYellow, style=plot.style_circles, linewidth=3, offset=barOffset)

// --- Líneas de Referencia ---
hline(0.01, "Base", color=color.gray, linestyle=hline.style_dotted)
hline(0, "Cero", color=color.white)

// --- Etiqueta ---
var label infoLabel = na
if barstate.islast and not na(fundingRate)
    label.delete(infoLabel)
    string txt = "Tasa Actual: " + str.tostring(fundingRate, "#.######") + "%"
    
    // El color de la etiqueta depende del estilo
    color labelColor = chartStyle == "Original (Barras)" ? barColor : binanceYellow
    color textColor = chartStyle == "Original (Barras)" ? color.white : color.black
    
    infoLabel := label.new(bar_index + barOffset, fundingRate, txt, color=labelColor, style=label.style_label_down, textcolor=textColor)