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

let
  assetPath = "${flakeRoot}/assets/system/conf/waybar";

  # Pick a normal user safely
  username =
    builtins.head (builtins.filter (u: config.users.users.${u}.isNormalUser != false)
      (builtins.attrNames config.users.users));
in
{
  # Install Waybar globally
  environment.systemPackages = [ pkgs.waybar ];

  ##############################
  # Home Manager: only define the user entries we want
  ##############################
  home-manager.users = {
    ${username} = {
      home.file = {
        ".config/waybar/config"  = { source = "${assetPath}/config"; };
        ".config/waybar/style.css" = { source = "${assetPath}/style.css"; };
      };
    };
  };

  ##############################
  # Systemd user service
  ##############################
  systemd.user.services.waybar = {
    description = "Waybar for Hyprland";
    after = [ "graphical-session.target" ];

    serviceConfig = {
      ExecStart = "${pkgs.waybar}/bin/waybar";
      Restart = "always";
      Environment = ''
        WAYLAND_DISPLAY=${config.environment.sessionVariables.WAYLAND_DISPLAY or "wayland-0"}
        XDG_CURRENT_DESKTOP=Hyprland
      '';
    };

    wantedBy = [ "default.target" ];
  };
}