monitoring widgets

[dexterlb]

video device monitoring

Currently we expose the "interesting" video devices as symlinks under /dev/video-<name>. Thus, I can do this:

human@lamya ~ % ls /dev/video-*
/dev/video-audience  /dev/video-closeup  /dev/video-lecturer  /dev/video-overview

Write a widget for waybar that displays which of those exist, polling their existence every second. Maybe display the first 3 letters of each, e.g. something like poll the result of the following command and show it in the bar:

human@lamya ~ % find /dev -maxdepth 1 -name 'video-*' -printf '%f\n' | cut -d - -f 2 | cut -c1-3 | tr '\n' ' '
clo aud lec ove

recording storage monitoring

Recording storage is automounted at /mnt/rec_storage (see #54). We need a widget that displays the free space (in gb) in that dir, or a big red warning if the dir is not mounted to an actual device.