#!/usr/bin/env fish

# This script randomly switches the background (through fehbg) every 5 to 30 minutes.
# It selects a random image from the ~/Pictures/Wallpapers folder (including subdirectories)
# Any hidden files in this folder are excluded.

# in-place awk script
set awkcommand '
BEGIN {
  FS=", " 
  width=1920
  height=1080
}


NR == 1 {
  x = $1
  y = $2

  if (x < 0) {
    x = width + x
  }
  
  if (y < 0) {
    y = height + y
  }

  print x ","  y
}
'

# kill old instances
for i in (ps -C (basename (status filename)) | awk 'FNR>1 {print $1}')
  if test $i -ne $fish_pid
       kill $i
  end
end


# set bg
swaybg -i $(find ~/Pictures/wallpapers -type f -regextype posix-extended -iregex "/(.*/)*[^\.]*\.(png|jpe?g|webp|gif)" | sort -R | head -n1)
while true 
  set rand (math "(floor $(random 300 1800) / 60) * 60")

  # countdown
  while test $rand -gt 0
    set minutes (math "floor $rand / 60 ")

    printf '\r\033[K%.2d:00' $minutes 

    sleep 60
    set rand (math $rand - 60 )
  end
 
  # update wallpaper 
  swaybg -i $(find ~/Pictures/wallpapers -type f -regextype posix-extended -iregex "/(.*/)*[^\.]*\.(png|jpe?g|webp|gif)" | sort -R | head -n1)
  set newpid $last_pid
  sleep 0.2
  for pid in (pgrep -x swaybg)
    if test $pid -ne $last_pid
      kill $pid 
    end 
  end
end