Bank

@bankemojibot: a tiny currency for Telegram, one balance across every chat. Website: bankemojibot.borodutch.com.

Everyone starts with 100 coins. React to someone's message with a coin and that many coins move from you to them:

🍌 1 · 🍓 5 · 🍾 10 · 🏆 25

Gifts are final: removing the reaction doesn't take the coins back, and adding it again doesn't pay twice. Add the bot to a group as an admin (no rights needed): Telegram only sends reactions to admin bots. The bot messages people when they get coins (once they've started it) and when a reaction gift bounces for lack of coins.

Commands: /balance, /top (this group's people in a group, everyone in DM), reply /give 10, /help.

Run

bun install
TOKEN=... bun bot.ts   # DATA_DIR (default .) holds bank.sqlite
bun test

Website

docs/ is the static site, served by GitHub Pages (main:/docs) behind Cloudflare. The share image docs/og.png is rendered from og/og.html:

"/Applications/Google Chrome.app/Contents/MacOS/Google Chrome" --headless=new --hide-scrollbars \
  --force-device-scale-factor=1 --window-size=1200,630 --screenshot=$PWD/docs/og.png "file://$PWD/og/og.html"

Bump og.png?v=N in docs/index.html after re-rendering. docs/logo.svg is also the bot's profile picture (render it at 1024×1024).

Deploy

Deployed on Tugport (bots.bankemojibot) with a /data volume and HANDOVER_LOCK for zero-downtime deploys.