4. Using the framework

🏃🏻 Usage:

🗒️ Rename the wrangler_sample.toml:

Rename the wrangler_sample.toml to wrangler.toml before moving forward in the tutorial!

🏗️ Creating index.js:

Create a file, index.js, at ./flaregram/src/ would be the main file for the bot and it contains all the code for the bot to run.

Write the following code inside index.js:

import { router } from './flaregram/utils/router';
import { bot } from './flaregram/bot';


// Adding Event Listener, to handle the incoming requests
addEventListener('fetch', (event) => {
  event.respondWith(router.handle(event.request));
});

export async function startCommand(body) {
    // Fetching user details with message body
    const user_id = body.message.from.id
    const firstname = body.message.chat.first_name;
    const chatId = body.message.chat.id;

    // Defining the message parameters, for the 'sendMessage' function
    messageparams = {
        chat_id: chatId, // Chat ID to send the message to
        text: `Hello [${firstname}](tg://user?id=${user_id}),\nWelcome to Sample Bot!`, // Text to send
        parse_mode: "markdown"
    }

    // Sending the message with the 'sendMessage' function
    await bot.message.sendMessage(messageparams);

}

// Handling the updates by telegram
export async function updateHandler(obj) {
  if (obj.message) {
    // if incoming message is '/start' command
    if (obj.message.text == '/start'){
        // Call the startCommand function
        await startCommand(obj);
    };
  };
};

Here's a breakdown of the code:

1. Importing necessary modules:

   • router from ./flaregram/utils/router: This is a router module that handles incoming requests and directs them to the appropriate handler functions.
   • bot from ./flaregram/bot: This is the main bot module that provides access to the Telegram Bot API.

2. Adding an event listener:

   • The addEventListener function is used to listen for incoming requests. When a request is received, the router.handle function is called to handle the request and respond accordingly.

3. Defining the startCommand function:

   • This function is responsible for processing the '/start' command. It retrieves user details from the message body, constructs a message parameters object, and sends a welcome message using the sendMessage function from the bot.message module.

4. Defining the updateHandler function:

   • This function is responsible for handling updates received from Telegram. It checks if the incoming message exists and if the message text is equal to '/start'. If both conditions are met, the startCommand function is called to execute the '/start' command.

And 😄 Voila! We've created our first bot just like that! Super easy right?!

Now let's move to the testing and deployment part!!! 🚀

Continue reading...

🔗 Testing and Deployment

Also Check out:

🔗 Advanced Usage