musicfetch/README.md

# 🎵 MusicFetch

**MusicFetch** is a smart command-line utility that finds music by searching
**Lidarr** (your music collection manager) and **YouTube Music** at the same
time, shows you the top hits in an interactive picker, and downloads/queues
whatever you choose. It accepts:

- A **free-form query**: an artist, an album, a track title, or combos like
  `"Artist - Title"` or `"Artist - Album"` (e.g. `"ODESZA - Bloom"`, `"Daft Punk"`, `"Discovery"`).
- A **URL** (e.g. `"https://music.youtube.com/watch?v=..."` or a regular YouTube URL).

Lidarr is tried first by default. If you pick a Lidarr album but **no indexer
release is available**, MusicFetch automatically falls through to the top
YouTube hit. YouTube downloads prefer **YouTube Music URLs** so album art and
tags are correct.

---

## 🚀 Features

- One unified picker showing the top hits from **Lidarr and YouTube together**, with matching keywords **bolded**.
- Lidarr-first flow: pick an album → adds artist+album (monitored) → interactive indexer search → falls through to YouTube only if no release is found.
- Accurate YouTube metadata via `ytmusicapi` (real artist / album / year / album art), with `yt-dlp` scraping as a fallback.
- Explicit tag overrides on download so files are tagged from the chosen hit, not from scraped titles.
- Non-interactive, YouTube-first, dry-run, quality, limit, and source-restriction flags.

---

## 📦 Dependencies & Installation

### 🐍 Python

- Python 3.10+
- `requests`
- `ytmusicapi` (recommended — accurate YouTube Music metadata)
- `rich` (recommended — nicer picker table + bold keyword matching)

```bash
pip install requests ytmusicapi rich
```

> **Note:** if you hit `ModuleNotFoundError: No module named 'idna'` from
> `requests`, repair it with:
> ```bash
> pip install --force-reinstall idna requests
> ```

`ytmusicapi` and `rich` are optional — without them MusicFetch falls back to
`yt-dlp` search scraping and a plain ANSI picker.

### 📼 External Tools

- `yt-dlp` (audio download/extraction) and `ffmpeg` (for `-x` extraction / embedding).

```bash
pip install -U yt-dlp
sudo apt install ffmpeg      # or your distro's equivalent
```

---

## ⚙️ Configuration

Set via environment variables:

| Variable          | Default                 | Purpose                          |
|-------------------|-------------------------|----------------------------------|
| `LIDARR_API_KEY`  | *(required for Lidarr)* | Lidarr API key.                  |
| `LIDARR_URL`      | `http://localhost:8686` | Lidarr base URL.                 |
| `MUSICFETCH_ROOT` | `/media/music`          | Default output root folder.      |

```bash
export LIDARR_API_KEY="your-lidarr-api-key"
```

---

## 🧑‍💻 Usage

```bash
./musicfetch [OPTIONS] QUERY...
```

### Options

| Flag | Description |
|------|-------------|
| `-n`, `--noninteractive` | Auto-pick the top hit (no prompt). |
| `-s`, `--ytsearch` | Search/select YouTube first instead of Lidarr first. |
| `-d`, `--dry-run` | Show every action without executing it. |
| `-q`, `--quality {best,320,m4a,opus,flac}` | Audio quality/format (default `best`). |
| `--limit N` | Hits per source (default 10). |
| `--lidarr-only` | Skip YouTube. |
| `--yt-only` | Skip Lidarr. |
| `-o`, `--root PATH` | Output root folder (default `/media/music`). |
| `--search-all` | Search all albums when adding an artist to Lidarr. |
| `--repair` | Re-tag existing downloads under `--root` from source metadata (see below). |
| `--retag-from-path` | Offline: re-tag artist/title from folder + filename (see below). |
| `-x`, `--exclude NAME` | Folder under `--root` to skip during `--repair`/`--retag-from-path` (repeatable). |
| `--debug` | Verbose output. |

### Examples

```bash
# Interactive: combined Lidarr + YouTube picker
./musicfetch "ODESZA - Bloom"

# Just an artist / just an album / just a title all work
./musicfetch "Daft Punk"
./musicfetch "Discovery"

# YouTube first, auto-pick top hit
./musicfetch -s -n "Daft Punk - Harder Better Faster Stronger"

# Dry run — see what would happen, change nothing
./musicfetch -d "ODESZA - Bloom"

# YouTube only, lossless preferred
./musicfetch --yt-only -q flac "Bonobo - Kerala"

# Download by URL (single track or playlist/set/album, any yt-dlp site)
./musicfetch "https://music.youtube.com/watch?v=xxxxxxxxxxx"
./musicfetch "https://soundcloud.com/artist/sets/my-mix"
```

### 🔧 Repair existing tags

`--repair` walks `<root>/<artist>/<source>/` (the `youtube`/`soundcloud`/… download
folders — Lidarr album folders are skipped), re-fetches authoritative metadata for each
file using the `[id]` in its filename, and fixes tags. Useful when downloads landed with
missing album or wrong year.

It is deliberately **conservative**: it overwrites **album** and **year** (the usual
breakage), and fills in **artist**/**title** when they are missing *or* a known-bogus
placeholder (`NA`, `Unknown Album`, `Unknown Artist` — left behind by older buggy tagging) —
but it never overwrites a genuine existing artist/title with a channel name or decorated video
title. A bogus `NA [<id>].<ext>` filename is renamed to the recovered title, and a literal
`NA` album with no source album is normalised to `Unknown Album`.

It re-queries the source over the network, so run it occasionally, not constantly. Requires
`mutagen` (a yt-dlp dependency, usually already present). CLI-only — not exposed via the REST API.

```bash
# Preview what would change (writes nothing)
./musicfetch --repair -d

# Apply fixes under a specific root
./musicfetch --repair -o /media/music
```

**`--retag-from-path`** is an offline companion: it derives **artist** and **title** purely
from the folder name + filename (stripping `(Official Video)` / `(Lyrics)`-style decorations,
and treating an `Artist - Title` filename correctly), with no network. Use it to undo bad
tags — e.g. titles/artists clobbered by an earlier `--repair` on music videos. It overwrites
artist/title and leaves album/year alone.

```bash
./musicfetch --retag-from-path -d            # preview
./musicfetch --retag-from-path -o /media/music

# Skip folders (e.g. hand-curated playlists you don't want re-tagged)
./musicfetch --repair -x Unsorted -x playlists
```

### 📁 Output Structure

```text
<root>/
├── Artist Name/
│   ├── Album Name/    (managed by Lidarr)
│   ├── youtube/       (YouTube / YouTube Music downloads)
│   ├── soundcloud/    (SoundCloud downloads)
│   └── <source>/      (one folder per yt-dlp source)
```

---

## ❓ Troubleshooting

- **No Lidarr hits / "LIDARR_API_KEY not set":** export your key and confirm `LIDARR_URL` is reachable.
- **Wrong album art from YouTube:** install `ytmusicapi` so MusicFetch can resolve proper YouTube Music URLs and metadata.
- **`yt-dlp` errors:** update with `yt-dlp -U`; ensure `ffmpeg` is installed for extraction/embedding.
- **`idna` import error:** `pip install --force-reinstall idna requests`.
- **Permission denied writing files:** ensure the output root exists and is writable (`-o`/`--root` or `MUSICFETCH_ROOT`).

---

## 🌐 REST API (Docker)

Run MusicFetch as an authenticated HTTP service inside your Lidarr Docker stack.
A client POSTs a query; the server grabs the top hit non-interactively and runs
the download as a background job you can poll. Every response includes a
human-readable `message` (handy for Siri).

### Configure & run

Set the network name in `server/docker-compose.yml` to your existing Lidarr
stack network, then:

```bash
export LIDARR_API_KEY="your-lidarr-key"
export MUSICFETCH_API_KEY="a-long-random-secret"
docker compose -f server/docker-compose.yml up -d --build
```

| Env var | Default | Purpose |
| --- | --- | --- |
| `MUSICFETCH_API_KEY` | *(required)* | Shared secret clients send as `X-API-Key`. |
| `MUSICFETCH_PORT` | `6769` | Listen port. |
| `LIDARR_URL` | `http://lidarr:8686` | Lidarr base URL (stack network). |
| `LIDARR_API_KEY` | *(required for Lidarr)* | Lidarr API key. |
| `MUSICFETCH_ROOT` | `/media/music` | Music output root (bind-mounted). |

TLS is expected to be handled by your upstream reverse proxy; the container
serves plain HTTP on `6769`.

### Endpoints

| Method | Path | Auth | Purpose |
| --- | --- | --- | --- |
| `GET` | `/health` | no | Liveness check. |
| `POST` | `/fetch?q=...` | yes | Grab top hit; returns a `job_id`. |
| `GET` | `/jobs/{id}` | yes | Poll job status. |

`POST /fetch` params: `q` (required), `quality` (`best,320,m4a,opus,flac`),
`source` (`auto,lidarr,youtube`).

### curl examples

```bash
# Kick off a fetch
curl -X POST 'https://mf.izebra.net/fetch?q=Under%20My%20Skin' \
  -H 'X-API-Key: a-long-random-secret'
# -> {"message":"Found 'Under My Skin' ... Downloading now.","job_id":"a1b2c3","status":"queued","hit":{...}}

# Poll the job
curl 'https://mf.izebra.net/jobs/a1b2c3' -H 'X-API-Key: a-long-random-secret'
# -> {"message":"Finished downloading ...","status":"done","result":{...}}
```

### 🗣️ Siri Shortcuts integration

Make a shortcut that fetches music by voice ("Hey Siri, fetch music").

1. **Shortcuts app → New Shortcut.**
2. Add **Ask for Input** → Input Type **Text**, prompt "What should I fetch?".
   (Or use **Dictate Text** for fully spoken input.)
3. Add **Text** action, set it to: `https://mf.izebra.net/fetch?q=` then insert
   the **Provided Input** variable at the end. (Shortcuts URL-encodes query
   variables automatically.)
4. Add **Get Contents of URL**:
   - **URL:** the Text variable from step 3.
   - **Method:** `POST`.
   - **Headers:** add one — key `X-API-Key`, value your `MUSICFETCH_API_KEY`.
   - **Request Body:** leave as is (the query is in the URL).
5. Add **Get Dictionary Value** → Get Value for **message** in **Contents of URL**.
6. Add **Speak Text** → the Dictionary Value. Siri reads back
   "Found '…' … Downloading now."
7. (Optional) To confirm completion: add **Get Dictionary Value** for `job_id`,
   **Wait** ~20 seconds, **Get Contents of URL** on
   `https://mf.izebra.net/jobs/<job_id>` (same `X-API-Key` header), then
   **Get Dictionary Value** `message` → **Speak Text** again.

Rename the shortcut (e.g. "Fetch Music") — that phrase becomes the Siri trigger.

---

## 🛠️ Contributing

PRs welcome. This script is middleware around Lidarr + yt-dlp, not a Lidarr
replacement. Keep it a single bash-friendly executable.

---

## 📜 License

GPL V3.0