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> **NOTE:** This repo is a working mirror. The canonical project lives at **[frank/ai-radio-two](https://git.obahan.xyz/frank/ai-radio-two)** — code, docs, and issue tracking. This repo is kept for reference only.
# radio-go — AI Radio broadcast pipeline
Endless AI-generated radio for your trusty MP3 internet stereo.
Three stages, two machines:
```
┌─────────────────────┐ FLAC ┌──────────┐ mp3+playlist ┌───────────────────────────┐
│ generator (anywhere)│ ────────► │ shipper │ ──────scp────► │ streaming VPS │
│ LLM + ComfyUI/YuE2 │ library │ (Go bin) │ │ streamer ─► icecast ◄─Caddy│
└─────────────────────┘ └──────────┘ │ │ now-playing │
│ ▼ MQTT │
└───────────────────────────┘
│
your stereo: https://…/ai-radio.mp3
```
- **shipper** (generator machine): reads the ai-radio app's `library/index.json`,
builds a rolling newest-biased playlist, transcodes FLAC→MP3 (ID3-tagged so
the stereo display shows the title), ships `*.mp3 + playlist.m3u8 + titles.json`
to the VPS.
- **streamer** (VPS): plays the shipped files into an icecast mount as one
endless live stream, publishing a now-playing JSON to MQTT per track.
Survives the generator being asleep — replays what's on disk.
- **VPS bundle**: icecast (HTTP :8000 for old stereos) + Caddy (automatic HTTPS)
+ streamer, all docker compose.
## Quick start
```bash
# build & test
go build ./... && go test ./...
# generator side (needs ffmpeg):
cp .env.example ship.env && $EDITOR ship.env
set -a; . ./ship.env; set +a
go run ./cmd/shipper # loops; --once for a single cycle
# VPS side: see vps/DEPLOY.md
```
## Docs
| Level | File | Audience |
|---|---|---|
| Overview | this README | everyone |
| Architecture & design decisions | [docs/architecture.md](docs/architecture.md) | contributors |
| Configuration reference | [docs/config.md](docs/config.md) | operators |
| VPS deployment | [vps/DEPLOY.md](vps/DEPLOY.md) | deploying the server |
| Stereo setup | [docs/stereo-setup.md](docs/stereo-setup.md) | the listener |
| Code-level | godoc comments in `internal/` | developers |
## Repo layout
```
cmd/shipper/ generator-side binary (library -> transcode -> scp)
cmd/streamer/ VPS-side binary (playlist -> icecast + MQTT now-playing)
internal/domain/ pure model: Track, playlist policy (no I/O)
internal/app/ use-cases: library load, transcode, ship
internal/infra/ adapters: m3u, icecast source proto, MQTT 3.1.1 client
vps/ docker-compose bundle (icecast + streamer + caddy)
tests/ e2e fakes (fake icecast + MQTT broker)
```
## Testing
```bash
go test ./... # unit tests (domain/infra/app)
python3 tests/fakes.py & # fake icecast:18000 + mqtt:18883
STREAM_WEBROOT=... ICECAST_ADDR=127.0.0.1:18000 MQTT_ADDR=127.0.0.1:18883 \
go run ./cmd/streamer # e2e against the fakes
```