The original script (J621-Django/extras/fish_greeting system) downloaded image bytes from /random/?rating=X and read the X-File-* headers. The new API answers with JSON and a signed link, so the greeting now: - asks /api/random/?fastfetch=1&rating=<mode> for JSON; - parses url/j_id/filename/md5 with jq, python3, or a grep/sed fallback; - downloads the signed link and keeps the original display path (fastfetch kitty/kitty-icat logos, gifsicle preprocessing for GIFs, recursion guard, logging with rotation, greeting_mode 0/1/2 = NSFW/SFW/Questionable); - is configured through ~/.config/j621Greeting/config.fish or universal variables (J621_BASE, J621_WEB, J621_TOKEN, J621_FASTFETCH_CONFIG) instead of a hardcoded host, and prints the /detail/<J-ID> link on J621_WEB; - reports the API's own 404 message when a rating has no images, and keeps curl quiet so failures do not spill into the greeting. extras/fish_greeting/ contains the function, an install.fish (copies it into the fish functions dir, creates the config once, checks dependencies) and a README with the old-vs-new table and troubleshooting. The existing gm-switch helper and .desktop launchers keep working (same mode file). Tested with fish 4.9.3: syntax check on every file, guest and token runs against the dev API (unsigned vs signed URLs), the empty-rating and unreachable-API paths, and the grep/sed fallback with jq and python3 unavailable.
J621
Self-hosted media library and e621 archive manager, rebuilt as a React SPA + Django REST API.
Structure
backend/ Django 6 + DRF API (MariaDB + Redis via docker compose)
frontend/ Vite + React + TypeScript SPA
Development
Backend
cd backend
source venv/bin/activate
python manage.py migrate
python manage.py scan_files # index the watched folder
python manage.py runserver
Copy .env.example to .env and set WATCHED_FOLDER before scanning.
Frontend
cd frontend
npm install
npm run dev # http://localhost:5173, proxies /api to :8000
Production
Docker: see deploy/ for the two images (SPA on static
nginx, API on gunicorn), the three compose variants (both / frontend-only /
backend-only) behind a shared nginx service and a Tailscale sidecar, and the
public-funnel or tailnet-only serve configs. deploy/push_*.sh builds and
pushes the multi-arch images to the Gitea registry.
Random image endpoint
Used by the SPA's Random page and by shell greetings (fish_greeting + fastfetch):
curl -H "Authorization: Token <token>" \
"https://j621.example.ts.net/api/random/?rating=s,q&fastfetch=1"
{
"j_id": "J-59",
"filename": "J-59.jpg",
"extension": "jpg",
"rating": "e",
"url": "https://j621.example.ts.net/api/files/J-59/raw/?sig=…",
"download_url": "https://j621.example.ts.net/api/files/J-59/raw/?sig=…&download=1",
"thumbnail_url": "https://j621.example.ts.net/api/files/J-59/thumbnail/?sig=…",
"fastfetch": true
}
rating— comma separated subset ofs,q,e(default: any).fastfetch=1, or any request whose User-Agent containsfastfetch, limits the roll topng/jpg/gifso terminals can display it. Images are the only candidates in both modes.urlis absolute, and signed for authenticated callers, so fastfetch can load it without headers. Guests get an unsigned URL and only see guest-visible items./randomand/random/are aliases of/api/random/for scripts. Behind the bundled nginx those aliases negotiate onAccept: browsers get the SPA page, requesters like curl/wget/fastfetch get the JSON./api/random/is the unambiguous path for scripts; 404 when nothing matches the filters.
Licence
Source-available, non-commercial: personal and other non-commercial use is welcome under the Jake Labs Non-Commercial Software Licence, which requires attribution and keeps derivative works under the same licence. Commercial use is not permitted. Third-party dependencies keep their own licences (all permissive: MIT, BSD, Apache-2.0, ISC).