zaneyos/scripts/wallsetter.nix

{ pkgs, username, ... }:

pkgs.writeShellScriptBin "wallsetter" ''
  WALLPAPER=$(find /home/${username}/Pictures/Wallpapers -name '*' | awk '!/.git/' | tail -n +2 | shuf -n 1)
  PREVIOUS=$WALLPAPER
  if [ "$WALLPAPER" == "$PREVIOUS" ]; then
      WALLPAPER=$(find /home/${username}/Pictures/Wallpapers -name '*' | awk '!/.git/' | tail -n +2 | shuf -n 1)
  fi
  if [ -d /home/${username}/Pictures/Wallpapers ]; then
    num_files=$(ls -1 /home/${username}/Pictures/Wallpapers | wc -l)

    if [ $num_files -lt 1 ]; then
      notify-send -t 9000 "The wallpaper folder is expected to have more than 1 image. Exiting Wallsetter."
      exit
    fi

    ${pkgs.swww}/bin/swww img "$WALLPAPER" --transition-type random
  fi
''