Snag - Swing Trade Long Term

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

//@version=5
indicator("Snag - SWING TRADE LONG TERM", overlay=true)

// Trend Up Strong
// Close Cross Up EMA 13, or Close Cross Up EMA 50 or Close Cross Up EMA 200
// Mark as Begin Up Trend
// Wait for EMA 13 Cross Up EMA 48 🡪 Confirm Strong Uptrend 🡪 BUY
// EMA 48 CROSS UP EMA 200 🡪 STRONGER UPTREND
// Trend Down Strong
// Close Cross Down EMA 13, or Close Cross Down EMA 50 or Close Cross Down EMA 200
// Mark as Begin Down Trend
// Wait for EMA 13 Cross Down EMA 48 🡪 Confirm Strong Downtrend 🡪 SELL
// EMA 48 CROSS DOWN EMA 200 🡪 STRONGER DOWNTREND

wma13 = ta.wma(close, 13)
plot(wma13, title="WMA13", color=color.blue)

wma48 = ta.wma(close, 48)
plot(wma48, title="WMA48", color=color.yellow)

wma200 = ta.wma(close, 200)
plot(wma200, title="WMA200", color=color.white)

crossUpWMA13 = ta.crossover(close, wma13)
crossDownWMA13 = ta.crossunder(close, wma13)
crossUpWMA48 = ta.crossover(close, wma48)
crossDownWMA48 = ta.crossunder(close, wma48)
crossUpWMA200 = ta.crossover(close, wma200)
crossDownWMA200 = ta.crossunder(close, wma200)

crossUpWMA13_48 = ta.crossover(wma13, wma48)
crossDownWMA13_48 = ta.crossunder(wma13, wma48)
crossUpWMA48_200 = ta.crossover(wma48, wma200)
crossDownWMA48_200 = ta.crossunder(wma48, wma200)

var bool isUpTrend = false
var bool isDownTrend = false

if crossUpWMA13 and isUpTrend == false
    isUpTrend := true
    isDownTrend := false
else if crossUpWMA48 and isUpTrend == false
    isUpTrend := true
    isDownTrend := false
else if crossUpWMA200 and isUpTrend == false
    isUpTrend := true
    isDownTrend := false

if crossDownWMA13 and isDownTrend == false
    isUpTrend := false
    isDownTrend := true
else if crossDownWMA48 and isDownTrend == false
    isUpTrend := false
    isDownTrend := true
else if crossDownWMA200 and isDownTrend == false
    isUpTrend := false
    isDownTrend := true
    
var int trendUp = 0
var int trendDown = 0

txtMarkTrend = ''
txtOrder = 'N/A'
if isUpTrend
    if crossUpWMA13_48
        trendUp := 1
        trendDown := 0
    if crossUpWMA48_200
        trendUp := 2
        trendDown := 0
        
if isDownTrend
    if crossDownWMA13_48
        trendUp := 0
        trendDown := 1
    if crossDownWMA48_200
        trendUp := 0
        trendDown := 2
        
if isUpTrend
    txtMarkTrend := 'Begin Up Trend'
    if trendUp == 1
        txtMarkTrend := 'Confirm Strong Uptrend'
        txtOrder := 'BUY'
    else if trendUp == 2
        txtMarkTrend := 'STRONGER UPTREND'
        txtOrder := 'BUY'

else if isDownTrend
    txtMarkTrend := 'Begin Down Trend'
    if trendDown == 1
        txtMarkTrend := 'Confirm Strong Downtrend'
        txtOrder := 'SELL'
    else if trendDown == 2
        txtMarkTrend := 'STRONGER DOWNTREND'
    txtOrder := 'SELL'
    
if barstate.islast
    var table panel = table.new("bottom_right", 6, 30)

    table.cell(panel, 0, 1, "TREND", bgcolor = color.yellow, text_color=color.black, width=18, text_halign=text.align_left)
    table.cell(panel, 1, 1, txtMarkTrend, bgcolor = color.yellow, text_color=color.black, width=18, text_halign=text.align_left)    
    table.cell(panel, 0, 2, "ORDER", bgcolor = color.yellow, text_color=color.black, width=18, text_halign=text.align_left)
    table.cell(panel, 1, 2, txtOrder, bgcolor = color.yellow, text_color=color.black, width=18, text_halign=text.align_left)    
    
        


// Alert
var time_wmacrossup_arr = array.new_int()
var time_wmacrossdown_arr = array.new_int()

if trendUp == 1 or trendUp == 2
    time_wmacrossdown_arr := array.new_int()
    if array.size(time_wmacrossup_arr) == 0
        array.push(time_wmacrossup_arr, time)
else if trendDown == 1 or trendDown == 2
    time_wmacrossup_arr := array.new_int()
    if array.size(time_wmacrossdown_arr) == 0
        array.push(time_wmacrossdown_arr, time)
        
is_alert_wmacrossup = false
is_alert_wmacrossdown = false

if array.size(time_wmacrossup_arr) > 0
    if time == array.get(time_wmacrossup_arr, array.size(time_wmacrossup_arr)-1)
        is_alert_wmacrossup := true
else if array.size(time_wmacrossdown_arr) > 0
    if time == array.get(time_wmacrossdown_arr, array.size(time_wmacrossdown_arr)-1)
        is_alert_wmacrossdown := true
        
alertcondition(is_alert_wmacrossdown, title='ENTER PUT', message='Get out Call and Enter PUT')
alertcondition(is_alert_wmacrossup, title='ENTER CALL', message='Get out Put and Enter CALL')