#+TITLE: Cetus

Cetus is a wallpaper tool written in Go. It can set wallpapers from various
sources. Default behaviour is to set a random wallpaper.

* Uses
- on system startup for new wallpaper at every startup
- as a cron job to change wallpaper at set intervals
* Demo
I just run some cetus commands on my computer, nothing fancy. I'll make better
demo videos someday.

| Version | Video                                                                |
|---------+----------------------------------------------------------------------|
| v0.2.0  | https://diode.zone/videos/watch/12db31e1-3517-4888-ad06-55f3859447a1 |
* Features
- Set Daily, Weekly or Random wallpaper
- Supports multiple sources
* Dependency
- [[https://feh.finalrewind.org/][feh]]
* Examples
** Daily wallpaper
*** from Astronomy Picture of the Day
#+BEGIN_SRC sh
cetus -src=apod -wall=daily
#+END_SRC
*** from Bing Photo of the Day
#+BEGIN_SRC sh
cetus -src=bpod -wall=daily
#+END_SRC
*** from Unsplash Source
#+BEGIN_SRC sh
cetus -src=unsplash -wall=daily
#+END_SRC
*** from any service (choosen randomly)
#+BEGIN_SRC sh
cetus -src=random -wall=daily

cetus -wall=daily # This is same as above
#+END_SRC
** Weekly wallpaper
*** from Unsplash Source
#+BEGIN_SRC shp
cetus -src=unsplash -wall=weekly
#+END_SRC
** Random wallpaper
*** from Bing Photo of the Day
#+BEGIN_SRC sh
cetus -src=bpod -bpod-num 16 -wall=random # select from last 16 images

cetus -src=bpod # This is same as above
#+END_SRC
*** from Unsplash Source
#+BEGIN_SRC sh
cetus -src=unsplash -wall=random -width 1920 -height 1080

cetus -src=unsplash # This is same as above
#+END_SRC
*** from any service (choosen randomly)
#+BEGIN_SRC sh
cetus -src=random -wall=random

cetus # This is same as above
#+END_SRC
* Defaults
| flag | var  | default                                   |
|------+------+-------------------------------------------|
| wall | wall | random (daily when random is unavailable) |
| src  | src  | random                                    |

Currently only Unsplash Source random is supported for width, height
| width  | width  | 1920 |
| height | height | 1080 |
** Astronomy Picture of the Day
| flag         | var        | default                             |
|--------------+------------+-------------------------------------|
| apod-api     | apodAPI    | https://api.nasa.gov/planetary/apod |
| apod-api-key | apodAPIKey | DEMO_KEY                            |
| wall         | wall       | daily                               |
** Bing Photo of the Day
| flag     | var     | default                                  |
|----------+---------+------------------------------------------|
| bpod-api | bpodAPI | https://www.bing.com/HPImageArchive.aspx |
| bpod-num | bpodNum | 7 (max 7)                                |
** Unsplash Source
| flag         | var         | default                     |
|--------------+-------------+-----------------------------|
| unsplash-api | unsplashAPI | https://source.unsplash.com |