{ lib, config, ... }:

let
  # --- Program metadata ---
  programName    = "kitty";                          # Change per module
  enableProgram  = config.enableKitty or true;       # Reference toggle safely
  username       = config.defaultUser or "henrov";   # Resolve user safely

  # --- Assets ---
  programAssets  = ../../../assets/system/conf/${programName};
  programFiles   = builtins.readDir programAssets;

  # Map each file → attrset for easy deployment
  files = lib.genAttrs (builtins.attrNames programFiles) (name: {
    src = "${programAssets}/${name}";
  });
in
{
  # --- Top-level toggle for this module ---
  options.enableKitty = lib.mkEnableOption "Enable kitty terminal";

  # --- Actual configuration (applied only if enabled) ---
  config = lib.mkIf enableProgram {

    # Dendritic container: all program config under myApps
    myApps.${programName} = {
      enable    = true;
      user      = username;
      assetsDir = programAssets;
      files     = files;

      # Program-specific metadata
      theme = "catppuccin-mocha";
    };

    # Deploy asset files for Home Manager users
    home-manager.users.${username} = {
      programs.kitty.enable = true;

      xdg.configFile = lib.mapAttrs' (name: value: {
        name  = "kitty/${name}";
        value.source = value.src;
      }) files;
    };

    # Example: systemd service if this program needed a sync or install process
    # (Remove or adapt if unnecessary)
    systemd.services.${programName}-sync = {
      description = "Sync ${programName} configuration";
      wantedBy    = [ "multi-user.target" ];
      wants       = [ "network-online.target" ];
      after       = [ "network-online.target" ];

      serviceConfig = {
        Type = "oneshot";
        ExecStart = ''
          set -euo pipefail
          CONF="${programAssets}"

          # Example loop over files; adapt per program
          for f in ${programAssets}/*; do
            echo "Processing $f..."
          done
        '';
      };

      restartTriggers = [ programAssets ];

      path = [
        pkgs.coreutils
        pkgs.gnugrep
        pkgs.gnused
      ];
    };
  };
}