How can i create a private message from telegram bot?

Question

I'm connecting to telegram bot with webhook and i wanted to respond in private chat through telegram but if i send UID it doesn't send any message to the user from the bot.

this is what i did.

I created a Web API Project with .net framework to connect to webhook with telegram bot.
As a user, i wrote a command that will return some list of objects.
From the WebAPI i got the command and processed correctly
on sending response back i passed this {"method":"sendMessage","chat_id":"[user's UID who sent the command]", "text":"[returning list converted as string]", "reply_to_message_id":"[message id for the command]"}

This is the actual code that i'm sending

return new TelegramResponseModel 
{ method = "sendMessage", chat_id = newUpdate.message.chat.id.ToString(),
  text = text, reply_to_message_id = newUpdate.message.message_id };

on telegram nothing happens!!

score 0 · Accepted Answer · answered Aug 08 '18 at 14:55

You can use Nuget package library for implementing integration with Telegram called Telegram.Bot. Also there is few examples how you can use this library. For example this short program shows how you can use WebHook's

using System;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using System.Web.Http;
using Microsoft.Owin.Hosting;
using Owin;
using Telegram.Bot.Types;
using Telegram.Bot.Types.Enums;
using File = System.IO.File;

namespace Telegram.Bot.Examples.WebHook
{
    public static class Bot
    {
        public static readonly TelegramBotClient Api = new TelegramBotClient("Your API Key");
    }

    public static class Program
    {
        public static void Main(string[] args)
        {
            // Endpoint must be configured with netsh:
            // netsh http add urlacl url=https://+:8443/ user=<username>
            // netsh http add sslcert ipport=0.0.0.0:8443 certhash=<cert thumbprint> appid=<random guid>

            using (WebApp.Start<Startup>("https://+:8443"))
            {
                // Register WebHook
                // You should replace {YourHostname} with your Internet accessible hosname
                Bot.Api.SetWebhookAsync("https://{YourHostname}:8443/WebHook").Wait();

                Console.WriteLine("Server Started");

                // Stop Server after <Enter>
                Console.ReadLine();

                // Unregister WebHook
                Bot.Api.DeleteWebhookAsync().Wait();
            }
        }
    }

    public class Startup
    {
        public void Configuration(IAppBuilder app)
        {
            var configuration = new HttpConfiguration();

            configuration.Routes.MapHttpRoute("WebHook", "{controller}");

            app.UseWebApi(configuration);
        }
    }

    public class WebHookController : ApiController
    {
        public async Task<IHttpActionResult> Post(Update update)
        {
            var message = update.Message;

            Console.WriteLine("Received Message from {0}", message.Chat.Id);

            if (message.Type == MessageType.Text)
            {
                // Echo each Message
                await Bot.Api.SendTextMessageAsync(message.Chat.Id, message.Text);
            }
            else if (message.Type == MessageType.Photo)
            {
                // Download Photo
                var file = await Bot.Api.GetFileAsync(message.Photo.LastOrDefault()?.FileId);

                var filename = file.FileId + "." + file.FilePath.Split('.').Last();

                using (var saveImageStream = File.Open(filename, FileMode.Create))
                {
                    await Bot.Api.DownloadFileAsync(file.FilePath, saveImageStream);
                }

                await Bot.Api.SendTextMessageAsync(message.Chat.Id, "Thx for the Pics");
            }

            return Ok();
        }
    }
}

score 0 · Answer 2 · answered May 04 '21 at 01:18

here you have a functional code on php:

<?php


$token = 'yout_boot_tocken';
$website = 'https://api.telegram.org/bot'.$token;

$input = file_get_contents('php://input');
$update = json_decode($input, TRUE);

$chatId = $update['message']['chat']['id'];
$message = $update['message']['text'];

$messageCode = strtoupper($message);

switch($messageCode) {
    case 'hello':
        $response = 'Hello my friend... how are you?';
        sendMessage($chatId, $response);
        break;
    case 'address':
        $response = 'Your Addres is Rosent wallet 245';
        sendMessage($chatId, $response);
        break;
    case '/INFO':
        $response = 'Hi, i am a Boot';
        sendMessage($chatId, $response);
        break;
    case 'bye':
        $response = 'it was a pleasure chat with you';
        sendMessage($chatId, $response);
        break;
    default:
        $response = 'I dont understand what do you mean with '.$messageCode;
        sendMessage($chatId, $response);
        break;
}

function sendMessage($chatId, $response) {
    $url = $GLOBALS['website'].'/sendMessage? 
 chat_id='.$chatId.'&parse_mode=HTML&text='.urlencode($response);
    file_get_contents($url);
}
  ?>

How can i create a private message from telegram bot?

2 Answers2

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