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

let
  username   = config.defaultUser or "henrov";
  moduleName = "stylix";

  # Path to stylix assets
  assetPath = ../../../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 packages
  ############################
  environment.systemPackages = [
    pkgs.feh
    pkgs.st
  ];

  ############################
  # Home Manager user settings
  ############################
  # Use the _module.args.hmUsers style to avoid "option does not exist"
  _module.args.hmUsers = {
    "${username}" = {
      # Copy all stylix config files into ~/.config/stylix/
      xdg.configFile =
        lib.mapAttrs' (name: value: {
          name = "${moduleName}/${name}";
          value = { inherit (value) source; };
        }) files;

      # Optionally include stylix.conf
      home.file."${moduleName}/stylix.conf".text = stylixConf;

      # Session variables
      home.sessionVariables = {
        STYLIX_CONF      = "$HOME/.config/stylix/stylix.conf";

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

      # Enable GTK target for Stylix
      stylix = {
        enable  = true;
        targets = {
          gtk = { enable = true; };
        };
      };
    };
  };
}