arr-tui/SPECS.md

# arr-tui — Specification

A terminal UI to search for movies and series, add them to Radarr / Sonarr, and watch the downloads progress in SABnzbd.

- **Language:** Go
- **TUI library:** [tview](https://github.com/rivo/tview) (on top of tcell)
- **License:** MIT
- **Module:** `git.stinnesbeck.com/nils/arr-tui`
- **Status:** M0 done

## 1. Goals

1. Search for movies (Radarr) and series (Sonarr) from one place.
2. Add a result to Radarr/Sonarr with sensible defaults (quality profile, root folder, monitored) and trigger a search so it gets downloaded.
3. Show the SABnzbd queue and history with live progress.
4. Be fast and keyboard-driven; usable over SSH.

### Non-goals (for now)
- Managing indexers, download clients, or Radarr/Sonarr settings.
- Replacing the Radarr/Sonarr web UIs for library management.
- Torrent clients (SABnzbd / Usenet only).
- Multi-user / auth beyond API keys.

## 2. How the pieces fit together

```
            ┌────────────┐   lookup / add / release search   ┌──────────┐
            │            │ ────────────────────────────────▶ │  Radarr  │──┐
            │  arr-tui   │                                   └──────────┘  │ sends NZB
            │            │ ────────────────────────────────▶ ┌──────────┐  │
            │            │                                   │  Sonarr  │──┤
            └─────┬──────┘                                   └──────────┘  │
                  │  queue / history / pause / resume                      ▼
                  └────────────────────────────────────────▶ ┌──────────────┐
                                                             │   SABnzbd    │
                                                             └──────────────┘
```

Radarr/Sonarr are expected to already have SABnzbd configured as their download client. arr-tui talks to all three APIs directly; it does **not** send NZBs to SABnzbd itself, except possibly via the manual-release flow, which still goes through Radarr/Sonarr (see 4.3).

## 3. External APIs

| Service | API | Auth | Endpoints used |
|---|---|---|---|
| Radarr | v3 REST (JSON) | `X-Api-Key` header | `GET /api/v3/movie/lookup?term=`, `GET /api/v3/movie`, `POST /api/v3/movie`, `GET /api/v3/qualityprofile`, `GET /api/v3/rootfolder`, `GET /api/v3/queue`, `GET /api/v3/release?movieId=`, `POST /api/v3/release`, `POST /api/v3/command` (`MoviesSearch`), `GET /api/v3/system/status` |
| Sonarr | v3 REST (JSON) | `X-Api-Key` header | `GET /api/v3/series/lookup?term=`, `GET /api/v3/series`, `POST /api/v3/series`, `GET /api/v3/qualityprofile`, `GET /api/v3/rootfolder`, `GET /api/v3/queue`, `GET /api/v3/release?episodeId=` / `?seriesId=&seasonNumber=`, `POST /api/v3/release`, `POST /api/v3/command` (`SeriesSearch`, `SeasonSearch`, `EpisodeSearch`), `GET /api/v3/system/status` |
| SABnzbd | `/api?mode=...&output=json` | `apikey` query param | `mode=queue`, `mode=history`, `mode=pause` / `resume`, `mode=queue&name=delete`, `mode=version` |

Notes:
- Endpoint shapes should be verified against each instance's own Swagger / the official docs when implementing; Radarr and Sonarr occasionally change fields between versions.
- Lookup results include an `id` of `0` when the item is not yet in the library; a non-zero `id` means it is already added. We use this to show an "in library" badge.

## 4. Features

### 4.1 MVP (v0.1)

- **Config:** load URLs + API keys from a config file; fail with a clear message if missing or unreachable.
- **Search:** one search box, with a toggle (movies / series). Results list with title, year, rating, status, and an "in library" marker. Detail pane with overview, runtime, genres, network/studio.
- **Add:** from a result, open a small form: quality profile, root folder, monitored (yes/no), "search now" (yes/no); for series also monitor mode (all / future / first season / none). Submit calls `POST /movie` or `POST /series` with `addOptions.searchForMovie` / `searchForMissingEpisodes`.
- **Interactive release search:** for a movie (or a series' season/episode) in the library, list releases from indexers (`GET /release`) with title, indexer, size, quality, age, and rejection reasons; sort/filter; grab a chosen one (`POST /release`). Rejected releases can be grabbed only after an explicit confirmation.
- **Downloads view:** all downloads and queues in one place, auto-refreshing every few seconds:
  - SABnzbd queue (name, size, progress, ETA, speed) and history (completed / failed, with retry).
  - Radarr and Sonarr queues (status, warnings, import errors), so stuck imports are visible.
  - Global speed / pause state in the status bar. Pause/resume and delete a SABnzbd job.
- **Status bar / help:** key hints, connection state of each service.

### 4.2 v0.2

- **Library view:** browse existing movies/series with filters (missing, downloaded, monitored).
- **Series drill-down:** seasons and episodes, toggle monitoring per season/episode, trigger season/episode search.

### 4.3 Later / ideas

- Calendar / upcoming view.
- Notifications on completed downloads.
- Multiple instances per service (e.g. 4K Radarr).
- Poster preview via sixel / kitty graphics where supported.

## 5. UI Design (tview)

Layout sketch:

```
┌ arr-tui ───────────────────────────────────────────────────────────┐
│ [Movies] Series  Downloads  Library                                │  ← tab bar
├────────────────────────────────┬───────────────────────────────────┤
│ Search: ______________________ │ Title (Year)                      │
│                                │ ★ 7.8 · 142 min · Sci-Fi          │
│ > Movie One (2021)        ✓    │                                   │
│   Movie Two (2019)             │ Overview text wraps here...       │
│   Movie Three (2024)           │                                   │
├────────────────────────────────┴───────────────────────────────────┤
│ ↓ 12.4 MB/s · 2 jobs · Radarr ● Sonarr ● SABnzbd ●   ? help        │  ← status bar
└────────────────────────────────────────────────────────────────────┘
```

tview primitives: `Pages` (views), `Flex` (layout), `InputField` (search), `List`/`Table` (results, queue), `TextView` (details), `Form` (add dialog), `Modal` (confirmations).

Keybindings (initial proposal):

| Key | Action |
|---|---|
| `Tab` / `1-4` | Switch view |
| `/` | Focus search |
| `Enter` | Search / open details / confirm |
| `a` | Add selected result |
| `m` / `s` | Switch to movies / series search |
| `p` | Pause/resume SABnzbd |
| `d` | Delete selected download (with confirm) |
| `i` | Interactive release search for the selected item |
| `g` | Grab the selected release |
| `r` | Refresh |
| `?` | Help |
| `q` / `Ctrl+C` | Quit |

## 6. Architecture

- All network I/O runs in goroutines; UI updates go through `app.QueueUpdateDraw`. Never block the UI thread.
- Debounced search (e.g. 300 ms) with request cancellation via `context.Context`.
- A single ticker drives SABnzbd/queue polling, only while the Downloads view (or the status bar) needs it.
- HTTP client per service with timeouts, and a typed error that the UI can show in the status bar rather than crashing.

Proposed layout:

```
arr-tui/
├── cmd/arr-tui/main.go        # entry point, wires config + UI
├── internal/
│   ├── config/                # load/validate config
│   ├── radarr/                # client + types
│   ├── sonarr/                # client + types
│   ├── sabnzbd/               # client + types
│   ├── arr/                   # shared bits (HTTP helper, quality profile, root folder types)
│   └── ui/                    # tview views: search, add form, downloads, status bar
├── SPECS.md
├── go.mod
└── README.md
```

Dependencies: `github.com/rivo/tview`, `github.com/gdamore/tcell/v2`. Prefer the standard library `net/http` and `encoding/json` for the API clients — no generated SDKs.

## 7. Configuration

Format: JSON. Location: `$XDG_CONFIG_HOME/arr-tui/config.json` (fallback `~/.config/arr-tui/config.json`), overridable with `--config`. Environment variables override file values (e.g. `ARR_TUI_RADARR_APIKEY`) so secrets don't have to live in the file. Parsed with the standard library `encoding/json` (unknown fields rejected to catch typos).

```json
{
  "radarr": {
    "url": "http://localhost:7878",
    "apikey": "...",
    "default_quality_profile": "HD-1080p",
    "default_root_folder": "/movies"
  },
  "sonarr": {
    "url": "http://localhost:8989",
    "apikey": "...",
    "default_quality_profile": "HD-1080p",
    "default_root_folder": "/tv"
  },
  "sabnzbd": {
    "url": "http://localhost:8080",
    "apikey": "..."
  },
  "ui": {
    "refresh_seconds": 3
  }
}
```

The default quality profile / root folder fields are optional.

The file should be created with mode `0600`; warn if it is more permissive. API keys are never logged.

## 8. Testing

- Unit tests for each client using `httptest.Server` with recorded JSON fixtures.
- Config parsing / validation tests.
- UI logic (formatting, state) kept out of tview widgets so it can be tested without a terminal.
- Manual testing against real Radarr/Sonarr/SABnzbd instances (ideally a docker-compose file for local dev).

## 9. Milestones

- [x] **M0** — Project skeleton: `go mod init`, config loading, empty tview app with tabs and status bar.
- [ ] **M1** — Radarr client: system status, lookup, quality profiles, root folders, add movie.
- [ ] **M2** — Movie search + add flow in the UI.
- [ ] **M3** — Sonarr client and series search + add flow.
- [ ] **M4** — SABnzbd client and Downloads view (queue + history) with live updates and pause/resume/delete.
- [ ] **M5** — Radarr/Sonarr queues merged into the Downloads view.
- [ ] **M6** — Interactive release search (movies, then series seasons/episodes) and grab.
- [ ] **M7** — Polish: help screen, error handling, README, release builds.
- [ ] **M8+** — v0.2 features (library view, series drill-down).

## 10. Open Questions

Open: none.


Decided:

- Go module path: `git.stinnesbeck.com/nils/arr-tui`.
- One instance each of Radarr, Sonarr and SABnzbd (multi-instance is a later idea).
- Minimum Go version: latest stable.
- License: MIT (Nils Stinnesbeck). The tool will be published, so keep secrets out of the repo, include a `config.example.json`, and write a proper README.
- Config format: JSON.
- Interactive release search: in the MVP.
- Downloads view: shows SABnzbd and the Radarr/Sonarr queues from the start.