# Backend - Media Library Viewer API

FastAPI backend serving the REST API for Jellyfin media browsing, SSH file inspection, server monitoring, and JWT-protected access.

## Project structure

```
backend/
├── pyproject.toml
├── README.md
├── src/
│   └── media_library_viewer_api/
│       ├── __init__.py
│       ├── main.py              # FastAPI app entrypoint
│       ├── config.py            # pydantic-settings config
│       ├── dependencies.py      # Dependency injection
│       ├── path_utils.py        # Jellyfin→SSH path resolution
│       ├── jobs.py              # Job templates
│       ├── utils.py             # Formatting helpers
│       ├── routers/
│       │   ├── dashboard.py
│       │   ├── monitoring.py
│       │   ├── media.py
│       │   ├── users.py
│       │   ├── files.py
│       │   └── jobs.py
│       ├── clients/
│       │   ├── jellyfin.py
│       │   ├── jellyseerr.py
│       │   ├── resources.py
│       │   └── ssh.py
│       ├── domain/
│       │   └── media.py
│       └── services/
│           └── media_index.py
└── tests/
```

## Setup

```bash
cd backend
python -m venv .venv
source .venv/bin/activate
pip install -e '.[dev]'
```

## Configuration

Create a `.env` file in the project root (or set environment variables):

```bash
JELLYFIN_URL=https://jellyfin.example.com
JELLYFIN_API_KEY=your-api-key
JELLYFIN_USER_ID=

# Optional Jellyseerr enrichment for the Users tab
JELLYSEERR_URL=https://requests.example.com
JELLYSEERR_API_KEY=your-jellyseerr-api-key

# Optional backend logging level
LOG_LEVEL=INFO

# Authentik / OIDC
AUTH_ENABLED=true
OIDC_ISSUER_URL=https://authentik.example/application/o/media-library-viewer/
OIDC_AUDIENCE=media-library-viewer
OIDC_JWKS_URL=
OIDC_CLOCK_SKEW_SECONDS=30

SSH_HOST=media-server.example.com
SSH_USERNAME=username
SSH_PORT=22
# Host-side directory mounted into the backend container at /root/.ssh.
SSH_KEY_HOST_DIR=/absolute/path/to/your/ssh-dir
# Container-side path assembled by the app:
SSH_KEY_DIRECTORY=/root/.ssh
SSH_KEY_NAME=id_ed25519
SSH_PASSWORD=

REMOTE_MEDIA_ROOT=/srv/media
REMOTE_PATH_PREFIX=
```

## Running

```bash
cd backend
uvicorn media_library_viewer_api.main:app --reload --port 8000
```

Or with PYTHONPATH if not installed:

```bash
PYTHONPATH=src uvicorn media_library_viewer_api.main:app --reload --port 8000
```

API docs available at: http://localhost:8000/docs

## Docker

The repository root includes a production `docker-compose.yml` and a development `docker-compose.dev.yml`.
The backend media index is stored in the `backend_cache` Docker volume so it survives container restarts and image rebuilds.

## API Endpoints

- `GET /api/dashboard/counts` — Movie/series/episode totals
- `GET /api/dashboard/libraries` — Per-library breakdown
- `GET /api/dashboard/now-playing` — Active playback sessions
- `GET /api/monitoring/status` — Collector status
- `GET /api/monitoring/metrics` — Resource samples (last hour)
- `GET /api/monitoring/disk` — Disk space
- `POST /api/monitoring/start|stop|restart` — Collector controls
- `GET /api/monitoring/diagnostics` — Collector debug info
- `GET /api/media/status` — Index status
- `POST /api/media/build` — Rebuild index
- `GET /api/media/query` — Query with filters/sort/pagination
- `GET /api/files/list?path=` — Directory listing
- `GET /api/files/ffprobe?path=` — ffprobe JSON
- `GET /api/files/stat?path=` — stat output
- `GET /api/files/resolve-path?path=` — Path resolution
- `GET /api/jobs/templates` — Available jobs
- `POST /api/jobs/run` — Execute a job
- `GET /api/users` — Jellyfin users with optional Jellyseerr enrichment