# subwave-nowplaying

Tronbyt/Tidbyt app showing the current track on a [SUB/WAVE](https://github.com/perminder-klair/subwave)
internet radio station: album art, track title, artist, and station name,
with title/artist scrolling if they don't fit.

Not tied to any specific station — set your own station's base URL in the
app's config when adding it to a device.

## Configuration

- **Station URL** — the base URL of your SUB/WAVE instance, e.g.
  `https://radio.example.com`. No trailing slash needed (stripped
  automatically). No auth required — SUB/WAVE's now-playing and cover-art
  endpoints are public.

## How it works

- `GET {station_url}/api/now-playing` — track title, artist, `subsonic_id`,
  DJ/station name, and stream online status. Cached 20s.
- `GET {station_url}/api/cover/{subsonic_id}` — album art JPEG, proxied by
  SUB/WAVE itself (no Navidrome credentials needed). Cached 300s.
- If the station reports `streamOnline: false`, shows "<station> offline"
  instead of stale track info.
- If a track has no `subsonic_id`, or the cover fetch fails, falls back to a
  full-width layout with no art rather than a broken image.

**Note on unreachable hosts:** if the station URL is wrong or the host is
completely unreachable (DNS failure, connection refused), `http.get` raises
a hard error and the render fails for that cycle — this is normal pixlet/
Starlark behavior (no try/except in the language), not a bug. Only
HTTP-level errors (404, 500, etc.) are something the app can catch and
display a message for, which it does.

## Dev/test

```
pixlet render subwave_nowplaying.star station_url=https://your-station.example.com
pixlet serve subwave_nowplaying.star
```

## Deploy

Upload `subwave_nowplaying.star` directly through your Tronbyt server's
"Upload app" button on a device's Add App page (single file, no bundled
assets — no need to zip). Configure the Station URL field when adding it to
your device's schedule.