serverless-telegram-echo-bot

Telegram Bot using AWS API Gateway and AWS Lambda using awesome serverless package.

Setup

Create the telegram bot

• Go to Telegram Web.
• Start a chat with @BotFather.
• Type /start.
• Type /newbot to create a new bot.
• After you created the bot, you get HTTP API access token.

Register in AWS

• Create AWS account here
• Get AWS credentials (read more how get it).
• Export credentials to ~/.bash_profile or terminal:

export AWS_ACCESS_KEY_ID=<ACCESS_KEY_ID>
export AWS_SECRET_ACCESS_KEY=<SECRET_ACCESS_KEY>

or add these variables to ~/.aws/credentials (I recommend this way):

[default]
aws_access_key_id = <ACCESS_KEY_ID>
aws_secret_access_key = <SECRET_ACCESS_KEY>

Deploy lambda

• Create .env file and add telegram access token. Also you can add telegram proxy url (optional):

TELEGRAM_TOKEN=<TELEGRAM_ACCESS_TOKEN>
TELEGRAM_PROXY=

• Deploy lambda:

npm run deploy

You get endpoints, like that

endpoints:
  POST - https://dfc5ofqqm0.execute-api.us-east-2.amazonaws.com/dev/

Set Telegram Webhook

• Replace <TELEGRAM_ACCESS_TOKEN> with your Telegram HTTP API access token obtained in the first step.
• Replace <INVOKE_URL> with your endpoint url which you get in the previous step.

Run this command:

$ curl --data "url=<INVOKE_URL>" "https://api.telegram.org/bot<TELEGRAM_ACCESS_TOKEN>/setWebhook"

You should get back a response similar to this:

$ {"ok":true,"result":true,"description":"Webhook was set"}

Testing via Telegram

• Send message to your Telegram Bot that you have created.
• Type any message.
• You should get your message back.