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Sarufi Telegram-Webhook chatbot blueprint

A blueprint for deploying telegram bots made using Sarufi. We need a webhook for this task to receive updates from telegram. Using webhook, we can deploy our chatbot as a lambda function. This way we can save resources and avoid delays.

You can use any of available solutions online. We shall cover setting up webhook using ngrok and replit.

Why use webhook instead of polling?

Using polling may render some delays and consume resorces. So you can use webhook for your chatbot to get rid of delays. Your chatbot will process the requests in time.

USING NGROK

Make sure you have ngrok installed in your local machine.

You will have to modify some commands shown here to suite your working environment. The commands like python3 and pip3 will depend on your working environment. You may have to use python and pip instead.

Quick configuration

  • Create Project directory and Virtual environment

    • Create a project directory Telegram bot.

      In this directory we are going to create a virtual environment to hold our package.

      mkdir 'Telegram bot'
      cd 'Telegram bot'
    • Make Virtual Environment

      Using virtual environment is a good practice, so we are going to create one. You can read more on why use virtual environment. We shall install all necessary packages in the environment

      • Unix based systems

        • Install virtual environment

          This step is optional as you may have python virtual environment already installed. If not, you can install it by running the command below.

          sudo apt install python3-venv
        • Create virtual environment and activate it

          python3 -m venv sarufi
          source sarufi/bin/activate
      • Windows

        • Install virtual environment

          This step is optional as you may have python virtual environment already installed. If not, you can install it by running the command below.

          pip install virtualenv
        • Create virtual environment and activate it

          virtualenv sarufi
          .\sarufi\Scripts\activate

Setting up the project

  • Clone and install requirements.

    In this part, we are going to clone the Sarufi Telegram Chatbot deployment Blueprint and install the packages.

    Run the commands below

    git clone https://github.com/Neurotech-HQ/sarufi-telegram-webhook-blueprint.git
    cd sarufi-telegram-webhook-blueprint
    pip3 install -r requirements.txt
  • Environment variables

    After installing packages, we need to configure our credentials. In telegram-chatbot-blueprint, create a file(.env) to hold environment variables.

    In .env, we are going to add the following credetials. To get your public ngrok url read here Using your favourite text editor add the following:-

    SARUFI_API_KEY = your API KEY
    SARUFI_BOT_ID= bot id
    TELEGRAM_BOT_TOKEN = telegram token
    START_MESSAGE= Hi {user_name}, Welcome To {bot_name}, How can i help you
    

    Note: The Start Message will be bot's reponse when a user sends /start command to your bot.

    You can customize the message to your preference. You have the following variable that you can use in your start message to make it more personalized:-

    • {name} - User's name. This is the name the user has on Telegram
    • {bot_name} - Bot's name from Sarufi Dashboard

Get Credentials

  • Getting Sarufi credentials.

    To authorize our chabot, we are are going to use authorization keys from sarufi. Log in into your sarufi account. Go to your Profile on account to get Authorization keys(client ID and client secret)

    Sarufi authorazation keys

  • Creating a telegram bot

    To create a chatbot on Telegram, you need to contact the BotFather, which is essentially a bot used to create other bots.

    To connect to Telegram, you need to create a Telegram bot. You can do this by following the instructions in the Telegram documentation. The instructions are as follows:

    1. Open Telegram and search for @BotFather.
    2. Click on the bot to start a chat.
    3. Send the /newbot command to create a new bot.
    4. Follow the instructions to create a new bot.

    Once you have created a bot, you will receive a token. This token is used to authenticate your bot with Telegram.

Fire up your bot

  • Starting ngrok to get public url

    Ngronk is a tool that allows you to expose a web server running on your local machine to the internet. You can read more on ngrok

    ngrok http 8000

    You will have a public https url indicating that its forwarding to your localhost:8000

  • Set Webhook Url

    We are going to set the webhook url to our bot. This is telling telegram server to send updates to our bot via specified url. This way our server can rest whenever there is no update. With this option you can deploy your chatbot as a lambda function.

    Using any of favourate API testing client or curl, set the webhook url as shown below

    curl --request POST 'https://api.telegram.org/bot<your bot token>/setWebhook?url=<your ngrok public url>'

    NOTE: The port number(for this case, 8000) matches the port used in main.py

  • Running your bot

    Run python script. Its the time you have been waiting for. Lets lauch 🚀 our bot.

    python3 main.py

    NOTE: All operations are done in activated virtual environment for convience

    Open your telegram app, search for your bot --> Send it a text. You can see a sample bot below

USING REPLIT

Have an account at replit. what you need is to fork the blueprint repl into your replit account.

Quick configuration

You will have to make little configuration to get you bot up running.

  • Creating a telegram bot

    As you already know, we are integrating our sarufi bot with telegram. So you will need to create a telegram bot.

    To create a chatbot on Telegram, you need to contact the BotFather, which is essentially a bot used to create other bots.

    The command you need is /newbot which leads to the stair-case steps upto having a complete bot. When finish steps, you will bot's token. You need the Bot token in the script.

  • Getting Sarufi credentials.

    To authorize our chabot, we are are going to use authorization keys from sarufi. Log in into your sarufi account. Go to your Profile on account to get Authorization keys(client ID and client secret)

    Sarufi authorazation keys

  • Environment variables

    In your repl, on the left lower part, Tool section. click secrets to add your environment variables.

    Add the following secretes. Get your BASE_URL here

    SARUFI_API_KEY = your API KEY
    SARUFI_BOT_ID= bot id
    TELEGRAM_BOT_TOKEN = telegram bot token
    START_MESSAGE= Hi {user_name}, Welcome To {bot_name}, How can i help you
    

    Note:

    The Start Message will be bot's reponse when a user sends /start command to your bot.

    You can customize the message to your preference. You have the following variable that you can use in your start message to make it more personalized:-

    • {user_name} - User's name. This is the name the user has on Telegram
    • {bot_name} - Bot's name from Sarufi

Fire up the bot

Click the run button to start your bot. You will see the bot running on the console. A small webview will open up with a url like https://<your repl name>.<your replit username>.co. Copy the url as we are going to use it in the next step to set webhook url.

Set Webhook Url

You can use any of favourate API testing client or curl, set the webhook url as shown below.

  • Using curl

    curl --request POST 'https://api.telegram.org/bot<your bot token>/setWebhook?url=<your replit url>'
  • Using API testing client

    You can use any of your favourate API testing client. I will use Postman.

    Then send a POST request to https://api.telegram.org/bot<your bot token>/setWebhook?url=<your replit url>

Open your telegram app, search for your bot --> Send it a text. You can see a sample bot below

ChatBot at work

Here is a sample bot deployed in Telegram

Telegram bot sample video

Issues

If you will face any issue, please raise one so as we can fix it as soon as possible

Contribution

If there is something you would like to contribute, from typos to code to documentation, feel free to do so, JUST FORK IT.

Credits

All the credits to

  1. Jovine
  2. All other contributors

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A blueprint that to deploy a sarufi bot in telegram using webhook

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