// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © maruful_bd_yhoo

//@version=5
indicator("~OI", "OI", overlay = true, format = format.volume)


c14 = color.rgb(192,192,192, 30)
c15 = color.rgb(211,211,211, 70)

//++++++++++++++++++++++++++++++++++++++++++++++++++++++
// Features of this script: OI
//++++++++++++++++++++++++++++++++++++++++++++++++++++++

string openInterestTicker = syminfo.tickerid
string timeframe = syminfo.type == "futures" and timeframe.isintraday ? "1D" : timeframe.period
[oiOpen, oiHigh, oiLow, oiClose, oiColorCond] = request.security(openInterestTicker, timeframe, [open, high, low, close, close > close[1]], ignore_invalid_symbol = true)
oiOpen := oiOpen ? oiOpen : na
oiHigh := oiHigh ? oiHigh : na
oiLow := oiLow ? oiLow : na

if barstate.islastconfirmedhistory and na(oiClose)
    runtime.error(str.format("No Open Interest data found for the `{0}` symbol.", userSymbol))

hasOHLC = ta.cum(oiOpen)
color openInterestColor = oiColorCond ? color.teal : color.red
//plot(hasOHLC ? na : oiClose, "Futures Open Interest", openInterestColor, style = plot.style_stepline, linewidth = 4)
//plotcandle(oiOpen, oiHigh, oiLow, hasOHLC ? oiClose : na, "Crypto Open Interest", color = openInterestColor, wickcolor = openInterestColor, bordercolor = openInterestColor)



// OI normalized
//oi_norm = (oiClose - oiLow) / (oiHigh - oiLow)
//ma = ta.ema(oi_norm, 12)
//plot( oi_norm, style = plot.style_areabr, color = color.rgb(242,243,244, 80))
//plot(oi_norm, color = color.white)