Before you start

• Have node 16 (preferably install and use nvm [node version manager])

Setup

1. Search Bot Father on telegram, create your bot, copy the token you get
2. Modify functions/src/index.ts and put your token at the token var
3. Run cd functions and npm i to install dependencies
4. Go to https://firebase.google.com, create a project
5. Upgrade the project to the pay-as-you-go plan (that's free for this use case, just add a CC)
6. Go to the FireStore section and set it up to use in europe somewhere
7. open .firebaserc file and put your project-id there (no spaces, it's the name you gave your project)
8. Install firebase-tools with npm install -g firebase-tools and run firebase login, then after you log in, run firebase deploy --only functions to deploy your project

You can also test it using npm run serve, then go to the url displayed in the console to start the process

Interface with Telegram

• Look for the bot you created in Telegram, send him a message
• Open Telegram in the browser, go to your conversation with the bot, copy the chat id from the url (it's the number at the end)
• Open functions/src/index.ts and put your chat id in the chatId var