Files
J621/extras/fish_greeting/README.md
T
JakeBreath aee29de34a Port the fish_greeting shell greeting to the new API
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.
2026-09-18 13:14:41 -05:00

75 lines
2.9 KiB
Markdown

# fish_greeting (updated for the J621 rewrite)
Shows a random library image as your shell greeting, using fastfetch. This is
the updated version of the script from
`J621-Django/extras/fish_greeting system/fish_greeting.fish`, adapted to the
new REST API.
## What changed from the old script
| | Old J621-Django | This version |
| --- | --- | --- |
| Endpoint | `GET /random/?rating=X` returned **image bytes** | `GET /api/random/?fastfetch=1&rating=X` returns **JSON** |
| Image access | same response, `X-File-MD5`/`X-File-Name` headers | signed `url` from the JSON, downloaded separately |
| Unsupported types | rolled again (recursion) | server only returns png/jpg/gif in fastfetch mode |
| Config | hardcoded `https://j621.jake.i` | `J621_BASE` / `J621_TOKEN` / `J621_WEB` |
| Printed link | `/view/<md5>` on the old host | `/detail/<J-ID>` on `J621_WEB` |
| Modes, logging, gifsicle, fastfetch flags | same | same (`~/.config/fish/greeting_mode`, `~/.config/j621Logos/logs.log`) |
The `gm-switch` helper and the `.desktop` launchers from the old repo keep
working unchanged: they write the same `~/.config/fish/greeting_mode` file
(0 = NSFW, 1 = SFW, 2 = Questionable).
## Install
```fish
cd extras/fish_greeting
fish install.fish
```
Then edit `~/.config/j621Greeting/config.fish` (at least `J621_BASE`) and test:
```fish
fish_greeting
```
Requirements: `curl` (or `wget`), `fastfetch`, `file`. Optional: `gifsicle`
(GIF downscaling), `jq` or `python3` (JSON parsing — without either it falls
back to grep/sed).
## Configuration
Any of these work; the config file is read by the function on every run:
```fish
# ~/.config/j621Greeting/config.fish, or universal variables
set -g J621_BASE https://j621.rainbow-herring.ts.net # API origin
set -g J621_WEB https://j621.example.ts.net # link origin (split deploys)
set -g J621_TOKEN <api token> # signed URLs + hidden items
set -g J621_FASTFETCH_CONFIG jake # fastfetch config name
```
`J621_TOKEN` is the same token the SPA uses (`Authorization: Token …`). With
it the API signs the image URL for your account, so you also get items that
are hidden from guests. Without it the greeting runs as a guest and sees the
public library only.
## Rating filters
| `greeting_mode` | Rating requested | Label |
| --- | --- | --- |
| `0` | `e` | NSFW |
| `1` | `s` | SFW |
| `2` (default) | `q` | Questionable |
## Troubleshooting
- `No logo (No image matches those filters.)` — the library has no images for
that rating; try another mode or add files.
- `No logo (API error)` — check `J621_BASE`, and that the deployment is up
(`https://<host>/health`).
- `No logo (download failed)` — the signed URL expired (they last 24 h) or the
item was deleted between the two requests; just run it again.
- The greeting is slow — the API and image fetch have `--max-time` guards; a
slow tailnet link is usually the cause.