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

let
  username = config.defaultUser or "henrov";

  # Path to greeter TOML
  greeterConfSrc = "${flakeRoot}/assets/traveldroid/conf/greeter.toml";

  # Hyprland session binary
  hyprlandPath = "${pkgs.hyprland}/bin/Hyprland";
in
{
  ##############################
  # Install tuigreet system-wide
  ##############################
  environment.systemPackages = [ pkgs.tuigreet ];

  #################################
  # System-wide greeter configuration
  #################################
  environment.etc."greeter/greeter.toml".source = greeterConfSrc;

  #################################
  # Greetd service
  #################################
  services.greetd = {
    enable = true;

    settings = {
      # Declare available sessions
      sessions = {
        hyprland = { path = hyprlandPath; };
      };

      # Default session (must match a session above)
      default_session = { session = "hyprland"; };

      # Greeter command (tuigreet)
      greeter = {
        command = "${pkgs.tuigreet}/bin/tuigreet --remember --time --time-format '%I:%M %p | %a • %h | %F'";
        user = username;
      };
    };
  };

  #################################
  # Optional: Home Manager integration
  # Ensure user can see session in their environment
  #################################
  _module.args.hmUsers = {
    ${username} = {
      # Expose the Hyprland session to the user
      home.sessionCommands = {
        hyprland = hyprlandPath;
      };
    };
  };
}