# file: wallpaper-copy.nix
{ lib, config, pkgs, flakeRoot, ... }:

let
  sourceDir = "${flakeRoot}/assets/hyprland/wallpaperstuff";

  # Determine target directory: use Home Manager homeDirectory if available, else $HOME
  targetDir = if lib.attrExists "home" config then
    "${config.home.homeDirectory}/Droidnix/wallpaperstuff"
  else
    "$HOME/Droidnix/wallpaperstuff";

in
{
  options.wallpaper.enable = lib.mkEnableOption "Copy wallpaperstuff dir";

  config = lib.mkIf config.wallpaper.enable {

    # System activation (runs on nixos-rebuild switch)
    system.activationScripts.copyWallpapers = {
      text = ''
        echo "=== Copying wallpaperstuff (system activation) ==="
        mkdir -p "${targetDir}"
        cp -rT "${sourceDir}" "${targetDir}"
        echo "Done."
      '';
      deps = [];
    };

    # Home Manager activation (runs when home-manager switch is executed)
    home-manager.users.${config.home.username ? config.home.username or "default"}?.home.activation.copyWallpapers = lib.mkIf (lib.attrExists "home" config) {
      description = "Copy wallpaperstuff to user home";
      script = ''
        echo "=== Copying wallpaperstuff (home-manager activation) ==="
        mkdir -p "${targetDir}"
        cp -rT "${sourceDir}" "${targetDir}"
        echo "Done."
      '';
    };
  };
}