MACD + Support / Resistance

//@version=4
// EMA Section
study(title="MACD + Support / Resistance", shorttitle="MACD + Support & Resist", overlay=true, max_labels_count = 500)

lookback = input(title = "Pivot Lookback", type = input.integer, defval = 10, minval = 1)
epsilon  = input(title = "Price Epsilon (%)", type = input.float, defval = 0.5, minval = 0.1)
emaRes = input(title = "EMA Resolution", type = input.resolution, defval = "D")
emaSrc = input(title = "EMA Source", type = input.source, defval = close)
emaLength = input(title = "EMA Length", type = input.integer, defval = 100, minval = 1)

ema100 = ema(emaSrc, emaLength)

ema100Daily = security(syminfo.tickerid, emaRes, ema100[barstate.isrealtime ? 1 : 0], barmerge.gaps_off, barmerge.lookahead_off)

emaLong = close > ema100Daily
emaShort = close < ema100Daily

plot(ema100Daily, "EMA", color = color.white, linewidth = 2)

epsilon /= 100

// 100 EMA, MACD, previous high or low

prevHigh = pivothigh(close, lookback, lookback)
prevLow  = pivotlow(close,  lookback, lookback)

// MACD
// Getting inputs
macdRes = input(title = "MACD Resolution", type = input.resolution, defval = "30")
fast_length = input(title="MACD Fast Length", type=input.integer, defval=12)
slow_length = input(title="MACD Slow Length", type=input.integer, defval=26)
src = 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)
displayPivots = input(title = "Display Pivot Labels", type = input.bool, defval = false)

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

macdSec   = security(syminfo.tickerid, macdRes, macd[barstate.isrealtime ? 1 : 0],   barmerge.gaps_off, barmerge.lookahead_off)
signalSec = security(syminfo.tickerid, macdRes, signal[barstate.isrealtime ? 1 : 0], barmerge.gaps_off, barmerge.lookahead_off)

macdCrossDown = crossunder(macdSec, signalSec)
macdCrossUp   = crossover(macdSec,  signalSec)

var bool highPointReached = na
var bool lowPointReached  = na

if (high + (epsilon * high)) >= prevHigh
    if displayPivots
        label.new(bar_index, y = na, yloc = yloc.abovebar, color = color.green, style = label.style_triangledown)
    highPointReached := true
else
    highPointReached := na
if (low - (epsilon * low)) <= prevLow
    if displayPivots
        label.new(bar_index, y = na, yloc = yloc.belowbar, color = color.red, style = label.style_triangleup)
    lowPointReached := true
else
    lowPointReached := na

macdPriceLong = false
macdPriceShort = false

if macdCrossDown and barssince(not na(highPointReached)) < lookback
    macdPriceShort := true

if macdCrossUp and barssince(not na(lowPointReached)) < lookback
    macdPriceLong := true

if not na(prevHigh) and displayPivots
    label.new(bar_index - lookback, y = na, yloc = yloc.abovebar, style = label.style_triangledown)
if not na(prevLow) and displayPivots
    label.new(bar_index - lookback, y = na, yloc = yloc.belowbar, style = label.style_triangleup)

long  = macdPriceLong and emaLong
short = macdPriceShort and emaShort

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}}")