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

let
  # --- Program definition ---
  programName = "hyprland";

  # --- Assets ---
  programAssets = "${flakeRoot}/assets/hyprland/conf/hypr";

  programFiles =
    if builtins.pathExists programAssets
    then builtins.readDir programAssets
    else {};

  fileNames = builtins.attrNames programFiles;

  # Exclude main config (handled separately)
  otherFiles = lib.filter (name: name != "hyprland.conf") fileNames;

  # Generate file mappings
  files = lib.genAttrs otherFiles (name: {
    src = "${programAssets}/${name}";
  });

  # Main config (inline)
  mainConfigPath = "${programAssets}/hyprland.conf";

  # Enable toggle (must match option)
  enableProgram = config.enableHyprland or true;

  # Resolve user safely
  user = config.defaultUser or "henrov";
in
{
  # --- Option ---
  options.enableHyprland =
    lib.mkEnableOption "Enable Hyprland desktop";

  # --- Config ---
  config = lib.mkIf enableProgram {

    # --- Dendritic app definition ---
    mySystem.${programName} = {
      enable = true;
      assetsDir = programAssets;
      files = files;
      inherit user;

      compositor = "hyprland";
    };

    # --- System-level enable ---
    programs.hyprland.enable = true;

    # --- Home Manager wiring ---
    home-manager.users.${user} = {

      home.stateVersion = "26.05";
      home.username = user;
      home.homeDirectory = "/home/${user}";

      wayland.windowManager.hyprland = {
        enable = true;

        settings.general."col.active_border" =
          lib.mkForce "0xff97cbcd 0xff89b4fa";
      };

      # --- Config files ---
      xdg.configFile =
        (lib.mapAttrs' (name: value: {
          name = "hypr/${name}";
          value.source = value.src;
        }) files)
        // {
          "hypr/hyprland.conf".text =
            if builtins.pathExists mainConfigPath
            then builtins.readFile mainConfigPath
            else "";

          "hypr/.keep".text = "";
        };
    };
  };
}