{ user ? throw "user argument is required" }: { config, lib, pkgs, ... }:

let
  hmConfig = config.home-manager.users.${user.name};
in
{
  home-manager.users.${user.name} = {
    home = {
      packages = with pkgs; [ swww ];
      persistence."/cache${user.home}".directories = [ "${hmConfig.xdg.relativeCacheHome}/swww" ];
    };

    wayland.windowManager.hyprland.initExtraConfig = "${lib.meta.getExe (pkgs.writeShellApplication {
      name = "init-swww";
      runtimeInputs = with pkgs; [
        coreutils-full
        swww
      ];
      text = ''
        swww-daemon &> /tmp/swww.log

        while ! swww query &> /dev/null; do
          sleep 0.1
        done

        swww img "${hmConfig.theme.configDir}/wallpaper"
      '';
    })} &";

    theme.extraConfig = lib.mkAfter "${lib.meta.getExe (pkgs.writeShellApplication {
      name = "theme-swww";
      runtimeInputs = with pkgs; [ swww ];
      text = "swww img \"${hmConfig.theme.configDir}/wallpaper\"";
    })} &";
  };
}