mikrotik logon telegram

https://wiki.mikrotik.com/wiki/Manual:Scripting
https://wiki.mikrotik.com/wiki/Manual:Scripting-examples#Detect_new_log_entry

Prepare
1. Create bot via botfather and get token
2. Add bot to chat
3. Get chat id

On device

1. Create script sendLogonEventTelegram

:global telegramToken "";
:global telegramChatId "";
:global routerHostName [/system identity get name] ;

:global lastTime;

:global currentBuf [ :toarray [ /log find buffer=logons  ] ] ;
:global currentLineCount [ :len $currentBuf ] ;
:global currentTime [ :totime [/log get [ :pick $currentBuf ($currentLineCount -1) ] time   ] ];

:global message "";

:if ( $lastTime = "" ) do={ 
	:set lastTime $currentTime ; 
	:set message [/log get [ :pick $currentBuf ($currentLineCount-1) ] message];
/tool fetch http-method=post url="https://api.telegram.org/bot$telegramToken/sendMessage?chat_id=$telegramChatId&parse_mode=markdown&text=*$routerHostName*```$message```"

} else={
	:if ( $lastTime < $currentTime ) do={ 
		:set lastTime $currentTime ; 
		:set message [/log get [ :pick $currentBuf ($currentLineCount-1) ] message];
/tool fetch http-method=post url="https://api.telegram.org/bot$telegramToken/sendMessage?chat_id=$telegramChatId&parse_mode=markdown&text=*$routerHostName*```$message```"

	}
}

2. Create log buffer

/system logging action
add name="logons"
/system logging
add action=logons topics=system,error,critical
add action=logons topics=system,info,account

3. Add scheduler for run every 10 (adjust time period) seconds with On Event: sendLogonEventTelegram