Telegram bot

[Varamil]

Hello,

I'm very interested in the Telegram Bot for other application. Is somebody has the code behind ?
Thanks

[arkypita]

Hi
C# code for LaserGRBL telegram bot is here:
https://github.com/arkypita/LaserGRBL/blob/master/LaserGRBL/Telegram.cs

Function "NotifyEvent" send a json packet to a web url

{
	{ "servicekey", UrlManager.TelegramServiceKey },
	{ "id", usercode },
	{ "message", message },
	{ "guid", UsageStats.GetID() },
};

On the other side there is a PHP script that receives the call and performs some things on my DB, for logging and authentication, and then calls a telegram api.

<?php

// from https://github.com/LeonelF/simple-php-telegram-bot

//error_reporting(-1);
//ini_set('display_errors', 'On');

set_time_limit(20);
ini_set('max_execution_time', 20);

include_once('conf.php');

spl_autoload_register(function($class) {
	include_once 'classes/' . $class . '.php';
});

$content = file_get_contents("php://input");
$update = json_decode($content, true);
$chat_id = $update["message"]["chat"]["id"];
$message = $update["message"]["text"];

$classes = array();
$classes['bot'] = "Bot"; //base bot class, do not remove!
$classes['start'] = "Start";
$classes['register'] = "Register";
$classes['admin'] = "Admin";

$args = explode(' ', trim($message));
$manager = strtolower(ltrim(array_shift($args), '/'));

if (!array_key_exists($manager, $classes))
    $manager = "bot";

$hook = new $classes[$manager]($conf, $chat_id, $update); //esiste sempre (alla peggio è la classe base Bot);

if (isset($args[0]) && method_exists($hook, $args[0]) && is_callable(array($hook, $args[0]))) //chiama il metodo specificato
{
    $function = $args[0];
    array_shift($args);
    $hook->$function($args);
}
else //chiama il metodo di default
{
    $hook->executor($args);
}

?>

I cannot share all the code, because of security purpose, but here is some code that you can use as inspiration.

<?php

class Bot
{
	private $api_url = '';
	protected $chat_id = '';
	protected $update = null;

	public function __construct($conf, $chat_id, $update)
	{
		$this->api_url = 'https://api.telegram.org/bot' . $conf['bot_token'];
		$this->chat_id = $chat_id;
		$this->update = $update;
	}

	public function executor()
	{
		return $this->send("Unknown command");
	}

	protected function send($message)
	{
		$text = trim($message);

		if (strlen(trim($text)) > 0) {
			$send = $this->api_url . "/sendmessage?parse_mode=html&chat_id=" . $this->chat_id . "&text=" . urlencode($text);
			file_get_contents($send);
			return true;
		}

		return false;
	}
	
	protected function SqlString($mysqli, $str, $nullify = true)
	{
		if (is_null($str))
		{
			if ($nullify)
				return "NULL";
			else
				return null;
		}
		else
		{
			return("'" . $mysqli->escape_string($str) . "'");
		}
	}
	
}

?>

<?php

class Start extends Bot 
{
	public function __construct($conf, $chat_id, $update)
	{
		parent::__construct($conf, $chat_id, $update);
	}

	public function executor()
	{
		$message = "<b>This is LaserGRBL BOT</b>" . chr(10) . chr(10);
		$message .= "This bot allows you to receive engraving progress notifications from LaserGRBL" . chr(10) . chr(10);
		$message .= "It is necessary to register to obtain a code to use in LaserGRBL. To register (or know your code) type <b>/register</b> command.";

		return $this->send($message);
	}
}

?>

<?php

class Register extends Bot 
{
	public function __construct($conf, $chat_id, $update)
	{
		parent::__construct($conf, $chat_id, $update);
	}

	public function executor()
	{
		$mysqli = new mysqli("mydburl.mysql.db", "mydbname", "mydbpassword", "mydbname");
		if ($mysqli->connect_errno)
			return $this->send("Cannot retrieve your code now, please retry later [1].");

		$id = $this->chat_id;
		$first_name = $this->update["message"]["from"]["first_name"];
		$last_name = $this->update["message"]["from"]["last_name"];
		$username = $this->update["message"]["from"]["username"];
		$language_code = $this->update["message"]["from"]["language_code"];


		$first_name = $this->SqlString($mysqli, $first_name);
		$last_name = $this->SqlString($mysqli, $last_name);
		$username = $this->SqlString($mysqli, $username);
		$language_code = $this->SqlString($mysqli, $language_code);

		//file_put_contents("./logcall.txt", "CALL BotRegister($id, $first_name, $last_name, $username, $language_code)\r\n", FILE_APPEND | LOCK_EX);
		$result = $mysqli->query("CALL BotRegister($id, $first_name, $last_name, $username, $language_code)");
		
		

		//  0: Update Rifiutato
		//  1: Update Accettato
		// -1: Impossibile eseguire la query

		if ($result)
		{
			$code = null;
			$first = true;
			while($row = $result->fetch_array(MYSQLI_ASSOC))
			{
				if ($first)
				{
					$first = false;
					$code = $row['token'];
				}
			}
				

			$result->Close();
			$mysqli->next_result();
		
			if ($code != null)
				return $this->send("Your code is: $code");
			else
				return $this->send("Cannot retrieve your code now, please retry later. [3]");
		}
		else
		{
			return $this->send("Cannot retrieve your code now, please retry later. [2]");
		}



		return $this->send("Not implemented");
	}
}

?>

I start my bot reading and implementing concept from this: https://github.com/LeonelF/simple-php-telegram-bot

[Varamil]

Hello,
Thanks a lot ! I'll read that.