// 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("~Sig", overlay = false)


// Inputs
fastest = input( 7, "Fastest lookback")
faster = fastest * 2
slow = input( 20, "Slow lookback" )
slower = 24
slowest = int(slow * 1.5)

signalLength_macd = input (7, "MACD signal length")
signalLength_macd_fastest = input (4, "MACD signal length")

// === Normalization
norm( data, lookback) =>
    max = ta.highest( data, faster )
    min = ta.lowest( data, faster )
    norm = ( data - min ) / ( max - min ) + 1
    norm


//=== Calculations
[ macdLine, signal_fastest, _ ] = ta.macd(close, fastest, faster, signalLength_macd)
[ macdLine_faster, signal_faster, _ ] = ta.macd(close, faster, slower, signalLength_macd)
[macd2, signal_slowest, _] = ta.macd(close, faster, slowest, 7 )

// Smaller difference = Trend reversal
dif_signal = signal_faster - signal_slowest


//===============================
//    colors    =================
//===============================
bullish = input( #aaff00, "Bullish" )
bearish = input (#e60073, "Bearish" )
bearish_lite = #669999

bullish_simple = #00e600
bearish_simple = #666666

candle_bullish = #00ccff
candle_bearish = #ff0080
candle_bearish_lite = #ffa64d

bullish2 = #cccccc
bearish2 = #ff3385
bull1 = #009900
bull2 = #ffff00

bear1 = #ff471a


// === plotting ===

p_signal_fastest = plot(signal_fastest, title="Signal fastest", color= ta.rising( signal_fastest, 7) ? #faf0e6 : bearish, linewidth = 1, style=plot.style_circles)
p_signal_faster = plot(signal_faster, title="MACD signal slow", color= ta.rising(signal_faster, 7) ? #c4ff4d : #e60000 , linewidth = 1)
//p_signal_slowest = plot(signal_slowest, title="MACD signal fastestest", color= ta.rising(signal_slowest, 4) ? bullish2 : bearish2 , linewidth = 1, style=plot.style_stepline)

//fill ( p_signalLine, p_signalLine2, color = ta.rising( signalLine2, 7) ? bullFill1 : bearFill1)

// === Reverse MACD 
[ _, rev_macdLine_original,  _] = ta.macd(close, 33, 7, signalLength_macd)
[ macdLine2, rev_macdLine2_original,  _] = ta.macd(close, 14, 7, signalLength_macd)
rev_macdLine = rev_macdLine_original
rev_macdLine2 = rev_macdLine2_original


//p_rev_macdLine = plot( rev_macdLine, title = "Rev. MACD", color= ta.rising( rev_macdLine, 7) ? bearish : bullish, linewidth = 1 )
//p_rev_macdLine2 = plot( rev_macdLine2, title = "Rev. MACD", color= ta.rising( rev_macdLine2, 3) ? bearish : bullish, linewidth = 1, style= plot.style_circles )
//fill( p_rev_macdLine, p_rev_macdLine2, color = ta.rising( rev_macdLine2, 7) ?  bearFill2 : bullFill2 )


//=======================================
//   Stoch RSI 
//=======================================
rsi7 = ta.stoch( close, high, low, 7)
rsi14 = ta.stoch( close, high, low, 14)

rsi_dif = rsi7 - rsi14
//plot( rsi_dif, color = #3366cc)

//=== Color candles based on price action 
fastest2 = input( 7, "Short EMA lookback")
slow2 = input( 14, "Medium EMA lookback")
ema_high = ta.ema( high, 7)
ema_medium = ta.ema( close, slow2)
ema_fastest = ta.ema( close, 6)
ema_low_fastest = ta.ema( low, fastest2 )

//==== color the candlesticks
//barcolor( close > ema_medium ? candle_bullish : close <= ema_fastest ? candle_bearish : candle_bearish_lite )

b01 = 0.0, s01 = 0.0
vol_norm = norm( volume, 12)

// Buy volume
if close > open
    b01 :=  vol_norm * math.abs(open / close)
    b01 

// Sell volume
if close < open
    s01 := vol_norm * math.abs(open / close)
    s01

d00_ = ta.cum(b01 - s01)

cvd_ma = ta.alma(d00_, 12, .80, 5)
//cvd_ma = ta.sma(d00_, 11)

barcolor( d00_ > cvd_ma ? #004953 : #8a795d )