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

let
  # Determine the default username from host config
  username = config.defaultUser or "henrov";

  moduleName = "stylix";
  assetPath  = "${flakeRoot}/assets/system/conf/${moduleName}";

  # Read all files in the asset directory
  programFiles = builtins.readDir assetPath;

  files = lib.genAttrs (builtins.attrNames programFiles) (name: {
    source = "${assetPath}/${name}";
  });

  # Optional stylix.conf
  stylixConfFile = "${assetPath}/stylix.conf";
  stylixConf =
    if builtins.pathExists stylixConfFile
    then builtins.readFile stylixConfFile
    else "";

  # Cursor defaults
  cursorName = "phinger-cursors-light";
  cursorSize = 24;
in
{
  ############################
  # System-level packages
  ############################
  environment.systemPackages = [
    pkgs.feh
    pkgs.st
  ];

  ############################
  # Home Manager user config
  ############################
  _module.args.hmUsers = {
    ${username} = {

      # Map all config files into ~/.config/stylix/
      xdg.configFile =
        lib.mapAttrs' (name: value: {
          name = "${moduleName}/${name}";
          value = { inherit (value) source; };
        }) files;

      # Environment variables for the session
      home.sessionVariables = {
        STYLIX_CONF      = "$HOME/.config/stylix/stylix.conf";

        XCURSOR_THEME    = cursorName;
        XCURSOR_SIZE     = toString cursorSize;
        HYPRCURSOR_THEME = cursorName;
        HYPRCURSOR_SIZE  = toString cursorSize;
      };
    };
  };
}