Simple Telegram Bot:

follow these instructions to get a simple Telegram Bot setup

Getting Started

  1. Open telegram chat in your browser or mobile phone

  2. Add the user BotFather

  3. Click start

  4. Click /newbot

  5. Follow the Instructions

instructions

Getting the Token

  1. Wait for the Token to be displayed referred to as [myauthorization-token]

  2. Go to the Administration Portal of Rocket.Chat and the Integrations Page

  3. Create a new Incoming Webhook following these instructions

    • Enable script

    • Paste the following

Incoming Webhook for Rocket.Chat

class Script {
process_incoming_request({ request }) {
// UNCOMMENT THE BELOW LINE TO DEBUG IF NEEDED.
// console.log(request.content);
if ('edited_message' in request.content) {
request.content.message = request.content.edited_message;
}
let from = request.content.message.from;
let who = from.username
let icon_url = '/avatar/' + from.username + '.jpg'
if(!who) {
if (from.first_name && from.last_name) {
who = `${from.first_name} ${from.last_name}`
} else if (from.first_name) {
who = from.first_name
} else {
who = from.last_name
}
icon_url = `/avatar/${request.content.message.from.first_name}.jpg`
}
let body = request.content.message.text
if(!body) {
if(request.content.message.hasOwnProperty("sticker") && request.content.message.sticker.emoji) {
// It's a sticker
body = request.content.message.sticker.emoji
} else {
return {}
}
}
return {
content: {
username: who,
icon_url: icon_url,
text: body
}
};
}
}

Letting Telegram Know About Rocket.Chat's WebHook

  1. Copy incoming webhook URL from Rocket.Chat

  2. Change following URL with your token and Incoming webhookURL and execute in regular browser https://api.telegram.org/bot[myauthorization-token]/setwebhook?url=[Incoming_Webhook_Link_from_Rocket.Chat]

  3. Receive the message { "ok": true, "result": true, "description": "Webhook successfully set" } (or similar)

  4. Test your incoming Webhook by sending a telegram message to the bot. It should be posted in the channel/user you specified in the incoming webhook. Check Rocket.Chat's Logs and write down chat_id (or [chat-id])

Create Outgoing WebHook in Rocket.Chat

  1. Create outgoing webhook and specify channel with the following url: https://api.telegram.org/bot[myauthorization-token]/sendMessage?chat_id=[chat-id]

  2. Paste the Outgoing Webhook below.

  3. Enable listening at the Bot with /privacy and to disable (example)

  4. Add Bot to telegram group and utilize nice cross platform communication.

class Script {
prepare_outgoing_request({ request }) {
if (request.data.bot) {
//Don't repost messages from the bot.
return { };
} else {
return {
url: request.url + '&parse_mode=HTML' + '&text=' + encodeURIComponent('<b>' + request.data.user_name+ '</b>: ' + request.data.text),
method: 'GET'
};
}
}
}

Conclusion

Enjoy! Please note, this was a community submission and is very simple. If you feel there are improvements which can be made, please feel free to submit improvements via pull requests!! :heart:

final product