3 Candle Engulfing

// @version=4
// Three Line Strike Candlestick Pattern (3 candle Engulfing patern) to help you detect sniper entry point mostly for (forex)
// Based on Arty (The moving average) youtube video channel
// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © moamenmostafa based on @amri_pangestu script
study(title = "3 Candle Engulfing", overlay = true)

// Inputs
minEngulfPips = input(title="Min. Engulf Pips", type=input.integer, defval=10, minval=1) / 10


// Logic
isBullEngulf = open[3] > close[3] ? open[2] > close[2] ? open[1] > close[1] ? close > open ? close >= open[1] ? close[1] >= open ? close - open > minEngulfPips ? close - open > open[1] - close[1] ? true :false :false :false :false :false :false :false :false

isBearEngulf = open[3] < close[3] ? open[2] < close[2] ? open[1] < close[1] ? open > close ? open >= close[1] ? open[1] >= close ? open - close > minEngulfPips ? open - close > close[1] - open[1] ? true :false :false :false :false :false :false :false :false


// Graphics
barcolor = isBullEngulf ? color.yellow : isBearEngulf ? color.white : na
barcolor(color = barcolor, title= "Engulf Candle Color")

plotshape(isBullEngulf, style=shape.triangleup,
                 location=location.belowbar, color=color.green, size = size.small, title= "Bull Engulf Mark")
plotshape(isBearEngulf, style=shape.triangledown,
                 location=location.abovebar, color=color.red, size = size.small, title= "Bear Engulf Mark")


// Alerts
if (isBullEngulf)
    alert(message = "Bullish Engulfing", freq = alert.freq_once_per_bar_close)
if (isBearEngulf)
    alert(message = "Bearish Engulfing", freq = alert.freq_once_per_bar_close)