RevSofia

Car meets in Sofia, Bulgaria. General meets are open to every car fan, and club meets are for the brand crowds (BMW, Mercedes-Benz, Audi/VW Group). Every meet can go straight into your phone's calendar, and a month calendar (the Calendar button in the top nav) shows what's coming up. The site has no chat of its own; that happens on Discord.

Site: https://georgievalex.github.io/revsofia/ Discord: https://discord.gg/epUkNA99a

Meets get organised in chat threads: "Sunday?", "can't before 10", "bringing the E92", "Ring Mall parking like last time?". The planner takes that thread, in any language, and asks Gemma 4 (gemma-4-31B-it, an open-weight model) to turn it into a draft meet. The draft has:

• title, date and time (relative days like "Sunday" resolved against today in Sofia)
• meeting point and destination
• who's coming and in what
• which club it belongs to, and why
• what the chat never settled
• an announcement ready to post back in Discord

The organiser edits the draft, then sends it for review as a GitHub issue. Nothing is published automatically.

browser ── GitHub Pages (static: docs/) + Cloudflare Turnstile widget
   │  POST text/plain {chat, club_hint, turnstile}
   ▼
DigitalOcean Function  revsofia/plan   (holds the model key and Turnstile secret)
   │  1. Turnstile siteverify: token, visitor IP, hostname
   │  2. OpenAI-compatible chat completion, only if 1 passed
   ▼
DigitalOcean Serverless Inference → gemma-4-31B-it

• The site is static. Meets are JSON files in data/events/. scripts/build.mjs (no dependencies) validates them and writes docs/data/site.json plus one .ics file per meet.
• The function exists so the key never reaches the browser. It computes "today" in Europe/Sofia itself, caps input at 8,000 characters, never forwards the upstream error body, and validates the model's JSON with the same module the build uses (packages/revsofia/plan/event.js).
• The browser sends text/plain, so the call is a CORS simple request with no preflight.
• Bot protection: CORS only stops browsers, so every request also needs a fresh, single-use Cloudflare Turnstile token. The function verifies it (with the visitor's IP and the expected hostname) before the model is called, and refuses everything if the secret is missing. A script without a token is rejected in well under a second and costs no model tokens.
• Spend ceiling: DigitalOcean serverless inference is prepaid. With auto-reload off, the Inference balance is a hard cap on the AI bill.
• Theme: dark by default. The light theme is a per-browser choice.
• Logo: hand-built SVG in docs/logo.svg (header) and docs/favicon.svg: a rev gauge sweeping into the redline over the Vitosha ridge. Concepts and the Discord icon source are in design/logo/.

1. Someone drafts it in the planner and clicks Send for review. That opens a GitHub issue containing the event JSON.
2. A maintainer saves the JSON as data/events/<id>.json.
3. They run npm run build and push.

The four meets in data/events/ are examples ("example": true), and the site shows them with an "Example meet" badge.

Requires Node 18+. There's no npm install; there are no dependencies.

npm test                              # node:test, all suites
npm run build                         # data/ -> docs/data/site.json + docs/ics/
python3 -m http.server 8765 -d docs   # then open http://localhost:8765/

doctl auth init
doctl serverless install && doctl serverless connect
# .env is git-ignored. Two secrets:
#   DO_INFERENCE_KEY=<DigitalOcean model access key>
#   TURNSTILE_SECRET=<Cloudflare Turnstile secret key>
doctl serverless deploy .
doctl serverless functions get revsofia/plan --url       # FUNCTION_URL in docs/config.js

The Turnstile site key is public and goes in TURNSTILE_SITEKEY in docs/config.js. Create the widget in the Cloudflare dashboard for the hostname georgievalex.github.io. After rotating the secret, update .env and redeploy.

scripts/try-plan.mjs posts fixtures/chats/ to the function, but it has no Turnstile token, so it now gets 403. To run it against a local copy of the function, use Cloudflare's test secret 1x0000000000000000000000000000000AA.

MIT