nixcfg/homeManagerModules/desktopEnv/hypr/hyprpaper/hyprpaper-random.nix

{ pkgs, lib, config, ... }:

let
  hyprpaper-random = pkgs.writeShellScriptBin "hyprpaper-random" ''
    directory=${config.home.homeDirectory}/.config/hypr/wallpapers
    monitor=`hyprctl monitors | grep Monitor | awk '{print $2}'`

    if [ -d "$directory" ]; then
        while true; do
        sleep 30
          hyprctl hyprpaper unload all
          for m in ''${monitor[@]}; do
            random_background=$(ls $directory/* | shuf -n 1)
            hyprctl hyprpaper preload $random_background
            hyprctl hyprpaper wallpaper "$m,$random_background"
          done
          sleep 870
        done
    fi
  '';
in {
  options = {
    desktopEnv.hyprland.hyprpaper.randomWallpaper.enable =
      lib.mkEnableOption "Enables hyprpaper random wallpaper script.";
  };

  config =
    lib.mkIf config.desktopEnv.hyprland.hyprpaper.randomWallpaper.enable {

      # Packages that should be installed to the user profile.
      home.packages = with pkgs; [ hyprpaper-random ];

      wayland.windowManager.hyprland.extraConfig = "exec-once = ${hyprpaper-random}/bin/hyprpaper-random";
    };
}