MTF EMA + MACD

//@version=4
// EMA Section
study(title="MTF EMA + MACD", shorttitle="MTF EMA + MACD", overlay=true)

// MTF EMA 1
mtfShort = input(title="Short MTF EMA", type=input.resolution, defval="15")
maShort_length = input(title = "Short EMA Period", defval = 50, minval = 1)
maShort = security(syminfo.tickerid, mtfShort, ema(close, maShort_length)[barstate.isrealtime ? 1 : 0])

// MTF EMA 2
mtfLong = input(title="Long MTF EMA", type=input.resolution, defval="60")
maLong_length = input(title = "Long EMA Period", defval = 50, minval = 1)
maLong = security(syminfo.tickerid, mtfLong, ema(close, maLong_length)[barstate.isrealtime ? 1 : 0])

pEma50  = plot(maShort, title="Short MTF EMA", color=color.white, linewidth=2)
pEma200 = plot(maLong,  title="Long MTF EMA", color=color.orange, linewidth=2)

emaLong  = maShort > maLong
emaShort = maShort < maLong

// MACD Section
fast_length = input(title="Fast MACD Length", type=input.integer, defval=12)
slow_length = input(title="Slow MACD Length", type=input.integer, defval=26)
macdSrc = input(title="MACD Source", type=input.source, defval=close)
signal_length = input(title="MACD Signal Smoothing", type=input.integer, minval = 1, maxval = 50, defval = 9)
sma_source = input(title="MACD Simple MA (Oscillator)", type=input.bool, defval=false)
sma_signal = input(title="MACD Simple MA (Signal Line)", type=input.bool, defval=false)

// Calculating
fast_ma = sma_source ? sma(macdSrc, fast_length) : ema(macdSrc, fast_length)
slow_ma = sma_source ? sma(macdSrc, slow_length) : ema(macdSrc, slow_length)
macd = fast_ma - slow_ma
signal = sma_signal ? sma(macd, signal_length) : ema(macd, signal_length)
hist = macd - signal

macdCrossDn = crossunder(macd, signal)
macdCrossUp = crossover(macd,  signal)

macdCross0 = cross(macd,   0)
sigCross0  = cross(signal, 0)

varip longCrossCount  = 0
varip shortCrossCount = 0

if macdCrossDn
    longCrossCount += 1

if longCrossCount == 1 and macdCrossUp
    longCrossCount += 1

if longCrossCount == 2 and macdCrossDn
    longCrossCount += 1

if macdCross0 or sigCross0 or macd > 0 or signal > 0
    longCrossCount := 0

if macdCrossUp
    shortCrossCount += 1

if longCrossCount == 1 and macdCrossDn
    shortCrossCount += 1

if longCrossCount == 2 and macdCrossUp
    shortCrossCount += 1

if macdCross0 or sigCross0 or macd < 0 or signal < 0
    shortCrossCount := 0

long  = emaLong  and longCrossCount == 3
short = emaShort and shortCrossCount == 3


if long
    label.new(x = bar_index, y = na, text = "Long", yloc = yloc.abovebar, color = color.green)
if short
    label.new(x = bar_index, y = na, text = "Short", yloc = yloc.abovebar, color = color.red)

// Alerts
alertcondition(long, title = "Long Signal", message = "Long @ {{timenow}}: {{ticker}} -> {{interval}}: {{close}}")
alertcondition(short, title = "Short Signal", message = "Short @ {{timenow}}: {{ticker}} -> {{interval}}: {{close}}")