Índice de fluxo de dinheiro (MFI)

//@version=6
indicator("Money Flow Index (MFI)", overlay=false)
length = input.int(14, "MFI Length")
mfi    = ta.mfi(hlc3, length)
longSignal  = ta.crossover(mfi, 20)
shortSignal = ta.crossunder(mfi, 80)
plotshape(longSignal,  style=shape.triangleup,   location=location.bottom, color=color.green, size=size.small)
plotshape(shortSignal, style=shape.triangledown, location=location.top,    color=color.red,   size=size.small)
hline(80, "Overbought", color=color.red,   linestyle=hline.style_dashed)
hline(50, "Mid",        color=color.gray,  linestyle=hline.style_dotted)
hline(20, "Oversold",   color=color.green, linestyle=hline.style_dashed)
plot(mfi, "MFI", color=color.new(color.teal, 0))

input length = 14;
def mfi = MoneyFlowIndex(length = length);
def buySignal = mfi crosses above 20;
def sellSignal = mfi crosses below 80;
AddOrder(OrderType.BUY_AUTO, buySignal, close, 1, Color.GREEN, Color.GREEN, "MFI Buy");
AddOrder(OrderType.SELL_AUTO, sellSignal, close, 1, Color.RED, Color.RED, "MFI Exit");
plot MFI_Line = mfi;
MFI_Line.SetDefaultColor(Color.CYAN);