From 438222d2858a459b164376ff2c2858f79608dc57 Mon Sep 17 00:00:00 2001
From: dax <info@daxtech.net>
Date: Wed, 22 May 2019 10:48:08 +0200
Subject: [PATCH] Add 'Telegram.class.php'

---
 Telegram.class.php | 316 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 316 insertions(+)
 create mode 100644 Telegram.class.php

diff --git a/Telegram.class.php b/Telegram.class.php
new file mode 100644
index 0000000..d4473f4
--- /dev/null
+++ b/Telegram.class.php
@@ -0,0 +1,316 @@
+<?php
+class TelegramBot {
+	#
+	# version
+	#
+	const Version = '1.1';
+	#
+	# Bot token
+	#
+	private $Token = null;
+	
+	#
+	# bool param
+	#
+	private $Async = false;
+	
+	#
+	# messages methods collection
+	#
+	private $actions = array();
+	
+	#
+	# debug mode
+	#
+	public $debug = false;
+
+	#
+	# ids whitelist
+	#
+	private $PermittedSenders = array();
+
+	#
+	# init class
+	#
+	function __construct($token){
+		#
+		# set token as private
+		#
+		$this->Token = $token;
+	}
+	
+	#
+	# Set async calls
+	#
+	public function SetAsync($bool)
+	{
+		$this->Async = $bool;
+	}
+
+	#
+	# add id to whitelist
+	#
+	public function PermitFromId($userId)
+	{
+		$this->PermittedSenders[] = $userId;
+	}
+
+	#
+	# do http call
+	#
+	private function _httpSend($method, $data)
+	{
+		#
+		# init curl
+		#
+		$ch = curl_init("https://api.telegram.org/bot$this->Token/$method");
+		
+		#
+		# set options
+		#
+		curl_setopt($ch, CURLOPT_POST, 1);
+		curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
+		curl_setopt($ch, CURLOPT_VERBOSE, 0);
+		curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+
+		#
+		# TODO - manage timeout and retry
+		#
+		
+		#
+		# do call
+		#
+		$result = curl_exec($ch);
+		
+		#
+		# parse response
+		#
+		$j = json_decode($result, true);
+		
+		#
+		# output if debug
+		#
+		if($this->debug) print_r($j);
+		
+		#
+		# return response from api.telegram
+		#
+		return $j;
+	}
+	
+	#
+	# https://core.telegram.org/bots/api#sendChatAction
+	#  
+	public function SendChatAction($destination, $action)
+	{
+		return $this->_httpSend('sendChatAction', array(
+			'chat_id'	=> $destination,
+			'action'	=> $action
+		));
+	}
+	
+	#
+	# https://core.telegram.org/bots/api#sendMessage
+	#
+	public function SendMessage($destination, $textMessage)
+	{
+		return $this->_httpSend('sendMessage', array(
+			'text'		=> $textMessage,
+			'chat_id'	=> $destination,
+			'parse_mode'=> 'HTML'
+		));
+	}
+
+	#
+	# https://core.telegram.org/bots/api#sendcontact
+	#
+	public function SendContact($destination, $number, $firstName, $lastName=null)
+	{
+		return $this->_httpSend('sendContact', array(
+			'chat_id'		=> $destination,
+			'phone_number'	=> $number,
+			'first_name'	=> $firstName,
+			'last_name'		=> $lastName
+		));
+	}
+	
+	#
+	# Send location
+	#
+	public function SendLocation($destination, $lat, $long)
+	{
+		return $this->_httpSend('sendLocation', array(
+			'chat_id'  	=> $destination,
+			'latitude' 	=> $lat,
+			'longitude'	=> $long
+		));
+	}
+	
+	#
+	# send document
+	#
+	public function SendDocument($destination, $url)
+	{
+		if( strpos('http', $url) === 0 )
+		{
+			return $this->_httpSend('sendDocument', array(
+				'chat_id'	=> $destination,
+				'photo'		=> $url
+			));
+		}else{
+				return $this->_httpSend('sendDocument', array(
+					'chat_id'	=> $destination,
+					'photo'		=> new CURLFile($url)
+			));
+		}
+	}
+	
+	#
+	# send image
+	#
+	public function SendImage($destination, $url)
+	{
+		if( strpos('http', $url) === 0 )
+		{
+			return $this->_httpSend('sendPhoto', array(
+				'chat_id'	=> $destination,
+				'photo'		=> $url
+			));
+		}else{
+				return $this->_httpSend('sendPhoto', array(
+					'chat_id'	=> $destination,
+					'photo'		=> new CURLFile($url)
+			));
+		}
+	}
+	
+	#
+	# add method in queue
+	#
+	public function AddMessageHandler($x)
+	{
+		$this->actions[] = $x;
+	}
+	
+	#
+	# listen recevied messages 4 bot
+	#
+	public function Listen()
+	{
+		#
+		# last message readed cache
+		#
+		$offset = 0;
+		
+		#
+		# infinite loop
+		#
+		while(true)
+		{
+			try
+			{
+				#
+				# build query
+				#
+				$ApiCall = "https://api.telegram.org/bot$this->Token/getUpdates?".http_build_query(array(
+					'offset' => $offset
+				));
+	
+				#
+				# do query
+				#
+				$result = file_get_contents($ApiCall);
+	
+				#
+				# parse response
+				#
+				$x = json_decode($result);
+	
+				#
+				# length
+				#
+				$count = count((array)$x->result);
+	
+				if( $count )
+				{
+					#
+					# each messages
+					#
+					foreach( $x->result as &$message )
+					{
+						#
+						# message type helpers
+						#
+						$message->message->IsText = isset($message->message->text);
+						$message->message->IsDocument = isset($message->message->document);
+						$message->message->IsPhoto = isset($message->message->photo);
+						$message->message->IsVoice = isset($message->message->voice);
+	
+						#
+						# check whitelist
+						#
+						if( count($this->PermittedSenders))
+						{
+							if(!in_array($message->message->from->id, $this->PermittedSenders))
+							{
+								#
+								# debug
+								#
+								if($this->debug) echo "*** Discarded message from ".$message->message->from->id." ***\n";
+								
+								#
+								# set as read
+								#
+								$offset = $message->update_id+1;
+								
+								#
+								# jump
+								#
+								continue;
+							}
+						}
+		
+						#
+						# debug
+						#
+						if($this->debug) print_r($message);
+	
+						#
+						# iterate actions
+						#
+						foreach( $this->actions as $action )
+						{
+							#
+							# execute anonymous action (as function)
+							#
+							$action($message->message, $this);
+						}
+	
+						#
+						# update offset 4 next http call - we comunicate at api.telegram that we have readed the message
+						#
+						$offset = $message->update_id+1;
+					}
+				}
+			}
+			catch(Exception $e) 
+			{
+			    if($this->debug) echo  $e->getMessage()."\n";
+			}
+			finally {
+			    #
+				# loop standby
+				#
+				usleep(1000);
+			}
+		}
+	}
+	
+	public static function Contains($x,$y)
+	{
+		return strpos( strtolower($y), strtolower($x) ) !== false;
+	}
+	
+}
+
+?>
\ No newline at end of file