Serverless Telegram bot template code for use with Firebase Cloud Functions

https://telegram.me/serverless_tgbot_example_bot

• Automatically initializes functions.config() from a local config.json file. Includes module that provides the local copy if running inside firebase serve --only functions.
• Organized Express.js stack
• Convenient postdeploy and predeploy actions.
• Code generation with hygen (Try: npx hygen route new <name>)
• OpenAPI integration with swagger-jsdoc. (See: Sample)

• Setup the Firebase CLI

• Generate your own repository from this template

• Clone your repo

  git clone <YOUR REPOSITORY>

• Install dependencies (this will generate a config.json file)

  cd functions && npm install

• Edit .firebaserc to represent your Firebase project information.

• Edit config.json to set your information. This information is automatically set as firebase environment configurations in functions/scripts/predeploy.js:

  {
      "telegram": {
          "bot_token": "77777777:Alskdjaslkdjasl-kjLKjlkasddd",
          "webhook_secret": "mysecretendpoint"
      },
      "gcp": {
          "datacenter": "us-central1",
          "project_id": "serverless-bot"
      }
  }

• (Optional) Write your own bot logic code in functions/src/lib/bot/controller.js. For testing your environment and deployment, you can leave it as is and test the build-in /start command.

  // in functions/src/lib/bot/controller.js
  
  // ...
  const Telegraf = require('telegraf')
  const bot = new Telegraf(config.telegram.bot_token, {
      telegram: { webhookReply: true }
  })
  
  bot.command('start', ctx => {
      return ctx.reply('Hello from Cloud Function')
  })
  // ...

• When ready, deploy to Firebase:

  firebase deploy

• See if your Telegram bot responds: