# Levyraati

A private music review club. Members submit songs — by file upload or YouTube link — and review each
other's picks on a 1–100 scale. Other people's reviews of a song stay hidden until you've written
your own.

Invite-only, no public registration. Built for about ten friends.

> **Status:** not built yet. This README describes the app defined in [docs/spec.md](docs/spec.md);
> commands here are the intended interface, not a record of anything that runs today.

## Docs

| File | What's in it |
|---|---|
| [CONTEXT.md](CONTEXT.md) | The glossary — every domain term, in English and Finnish |
| [docs/spec.md](docs/spec.md) | What the app does: rules, pipeline, routes, API contract, schema |
| [docs/decisions.md](docs/decisions.md) | Why it is that way. Append-only |
| [docs/later.md](docs/later.md) | Deliberately not in v1, with the reasoning kept |

## Branches

- **`main`** — released code only. Every commit on it is something that ran in production, or is
  meant to. Tagged at each release.
- **`dev`** — current development, and whatever nightly builds get made. Work happens here and
  reaches `main` by merge at release time.

The app never sends email — there is no verification, no password reset link, and no notifications.
Members have an address because it is their login and because mail is a planned feature.

## Stack

Go, Postgres, `html/template`, HTMX + Alpine. Audio is converted with ffmpeg and downloaded with
yt-dlp. One binary, one origin — there is no separate frontend to deploy.

Go dependencies: `pgx/v5` and `golang.org/x/crypto`. No Node, no npm, no bundler.

## Running it

```sh
cp .env.example .env      # then edit — ADMIN_PASSWORD has no default and the app won't start without it
docker compose up -d
```

Migrations apply themselves at startup, before the server accepts connections. The first launch
creates no users: log into the admin panel and mint an invite.

### Configuration

| Variable | Default | Notes |
|---|---|---|
| `DATABASE_URL` | — | `postgres://user:pass@postgres:5432/levyraati` |
| `ADMIN_USER` | `admin` | Admin panel username |
| `ADMIN_PASSWORD` | — | **Required.** No default; the app refuses to start without it |
| `ADDR` | `:8080` | Member-facing listener |
| `ADMIN_ADDR` | `127.0.0.1:8081` | Admin listener. Keep it on loopback |
| `STORAGE_DIR` | `./storage` | Audio, avatars, in-flight conversions |
| `SECURE_COOKIES` | `true` | Set `false` for local development over plain HTTP |

### Local development

```sh
docker compose up -d postgres
export DATABASE_URL=postgres://levyraati:levyraati@localhost:5432/levyraati
export ADMIN_PASSWORD=dev SECURE_COOKIES=false
go run .
```

Requires Go 1.22+, plus `ffmpeg`, `ffprobe`, and `yt-dlp` on `PATH`.

Templates, stylesheet, and migrations are embedded with `embed.FS`, so a rebuild is needed to see
template changes. `go build && ./levyraati` is the loop.

## Admin panel

The admin is **not a user account**. It exists only as `ADMIN_USER` / `ADMIN_PASSWORD`, authenticates
with HTTP Basic Auth, and is bound to loopback so it is not reachable from the internet. Reach it
through an SSH tunnel:

```sh
ssh -L 8081:127.0.0.1:8081 you@server
# then open http://localhost:8081
```

From there: mint invites, reset member passwords, ban members, delete songs, read issue reports.

**Lost the admin password?** Edit `.env` and `docker compose restart app`. There is no recovery
endpoint and no recovery key — the credentials are the environment.

## Operations

### yt-dlp goes stale

yt-dlp needs regular updates to keep working against YouTube. It is installed with
`pip install -U yt-dlp` at image build time, so rebuilding is how you update it:

```sh
docker compose build --no-cache app && docker compose up -d app
```

**Rebuild monthly.** When submissions start failing with download errors, this is the first thing to
try. Failures are shown to the submitter with the yt-dlp error attached, so they're visible without
reading logs.

### Logs

```sh
docker compose logs -f app
```

JSON to stdout, nothing else. There is no log table and no log viewer in the app.

### Backups

Two paths hold everything:

- `./pgdata` — the database
- `./storage` — audio files and avatars

Both are bind mounts. `storage/tmp/` is in-flight conversions and is safe to skip; it's cleared on
startup anyway.

```sh
docker compose exec postgres pg_dump -U levyraati levyraati | gzip > backup-$(date +%F).sql.gz
```

### Database shell

```sh
docker compose exec postgres psql -U levyraati levyraati
```

## Layout

Go source is flat at the repository root, one package. Beyond that: `templates/` and `static/` are
embedded assets, `migrations/` holds numbered `.sql` files applied in order at startup, and
`testdata/` holds the golden JSON files that guard the API contract, plus `ytdlp-noose.json` — a real
`yt-dlp -J` dump of an ordinary upload, used to test metadata prefill against a video that has no
`track`, `artist` or `album` at all.

## Notes

Downloading audio from YouTube is against YouTube's terms of service. This is a private app among a
handful of friends; the decision is deliberate rather than accidental.

## Licence

MIT — see [LICENSE](LICENSE).