Fan-made tracker for the Łatwogang × Cancer Fighters stream.

• Production URL: latwo-x-cancerfighters.pcstyle.dev
• Repo: pc-style/diss-na-raka
• Support / data help: x.com/@pcstyle53

The PLN total is manually updated. The site serves the current dataset through GET /api/data, accepts authenticated manual updates through PUT /api/data, and can sync YouTube live stats through POST /api/youtube-sync.

Install deps and start the app with Bun:

bun install
bun dev

Open http://localhost:3000 with your browser to see the result.

Copy .env.example to .env.local and set:

DATA_UPDATE_TOKEN=your-long-random-token
YOUTUBE_API_KEY=your-youtube-data-api-key

Optional for production-like local storage:

BLOB_READ_WRITE_TOKEN=...

Without BLOB_READ_WRITE_TOKEN, local updates are written to data/site-data.json.

Optional channel override:

YOUTUBE_CHANNEL_ID=UCjpBbH8NmL4XHVUgJurDPZg

curl -X PUT "http://localhost:3000/api/data" \
  -H "Authorization: Bearer $DATA_UPDATE_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "dashboard": {
      "totalRaisedPln": 5000000,
      "metadata": {
        "lastUpdatedUtc": "2026-04-23T08:15:00Z"
      }
    }
  }'

Full docs live in dosc/README.md.

This uses the YouTube Data API for live stream metadata only. It can refresh things like:

• current live video URL/title
• concurrent viewers
• total video views
• derived hoursElapsed / estimatedTotalLoops

It does not provide the donation total, so totalRaisedPln stays on the existing manual update flow.

One-shot sync:

bun run sync:youtube

Continuous polling:

bun run sync:youtube --watch

# Poll every minute
bun run sync:youtube:minute

The default watch interval is 30 seconds. The sync script calls the protected POST /api/youtube-sync route using DATA_UPDATE_TOKEN, and when Blob is configured those updates are persisted there.

Instead of hand-writing curl, you can run:

bun run update --amount 5800000

# Optional explicit UTC override
bun run update --amount 5800000 --time "2026-04-23T10:30:00Z"

Or pass local Warsaw-style tracker time directly:

bun run update --amount 5800000 --time-gmt2 "2026-04-23 12:30"

The script uses DATA_UPDATE_TOKEN and defaults to https://latwo-x-cancerfighters.pcstyle.dev/api/data.

1. Create a Vercel project from this repo.
2. Add DATA_UPDATE_TOKEN.
3. Create a Vercel Blob store and connect it to the project so BLOB_READ_WRITE_TOKEN is provided.
4. Deploy.

Why Blob: Vercel Functions use a read-only filesystem except for temporary /tmp, so persisted tracker updates need external storage.