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

let
  configDir = ./config;

  # Explicit list of config items to manage
  # This replaces dynamic builtins.readDir for clarity and faster evaluation
  configItems = {
    # Directories
    fastfetch = "directory";
    fcitx5 = "directory";
    fontconfig = "directory";
    git = "directory";
    imv = "directory";
    "nautilus-python" = "directory";
    nomarchy = "directory";
    "nomarchy-skill" = "directory";
    uwsm = "directory";
    wiremix = "directory";

    # Files
    "brave-flags.conf" = "regular";
    "chromium-flags.conf" = "regular";
    "starship.toml" = "regular";
    "xdg-terminals.list" = "regular";
  };

  # Files/directories handled elsewhere or not intended for ~/.config/
  # - nomarchy.ttf: font file, not a config
  # - waybar: handled in waybar.nix
  # - walker: handled in walker.nix
  # - alacritty: handled in alacritty.nix
  # - swayosd: handled in swayosd.nix

  # Check for user overrides
  userConfigDir = config.nomarchy.configOverrides;

  # Generate the xdg.configFile attribute set
  makeMapping = name: type:
    let
      source = if userConfigDir != null then "${userConfigDir}/${name}" else "${configDir}/${name}";
    in {
      inherit name;
      value = lib.mkDefault {
        inherit source;
        recursive = type == "directory";
      };
    };

  configMappings = lib.mapAttrs' (name: type: makeMapping name type) configItems;

in
{
  xdg.configFile = configMappings // {
    # mako reads ~/.config/mako/config by default. The themed Nomarchy
    # config (urgency rules, app filters, button handlers) lives under
    # nomarchy/default/mako/core.ini for organizational reasons, so wire
    # it explicitly here. Without this, mako silently falls back to its
    # built-in defaults and every Nomarchy notification customization is
    # inert.
    "mako/config".source = lib.mkDefault ./config/nomarchy/default/mako/core.ini;
  };

  home.file.".XCompose" = lib.mkDefault {
    source = ./config/nomarchy/default/xcompose;
  };
}