roi-theme/admin/includes/class-admin-menu.php

<?php
/**
 * Admin Menu Class
 *
 * Registra menú en WordPress admin y carga assets
 *
 * @package Apus_Theme
 * @since 2.0.0
 */

if (!defined('ABSPATH')) {
	exit;
}

class APUS_Admin_Menu {

	/**
	 * Constructor
	 */
	public function __construct() {
		add_action('admin_menu', array($this, 'add_menu_page'));
		add_action('admin_enqueue_scripts', array($this, 'enqueue_assets'));
	}

	/**
	 * Registrar página de admin
	 */
	public function add_menu_page() {
		add_theme_page(
			'APUs Theme Settings',           // Page title
			'Tema APUs',                     // Menu title
			'manage_options',                // Capability
			'apus-theme-settings',           // Menu slug
			array($this, 'render_admin_page'), // Callback
			59                               // Position
		);
	}

	/**
	 * Renderizar página de admin
	 */
	public function render_admin_page() {
		if (!current_user_can('manage_options')) {
			wp_die(__('No tienes permisos para acceder a esta página.'));
		}

		require_once APUS_ADMIN_PANEL_PATH . 'pages/main.php';
	}

	/**
	 * Encolar assets (CSS/JS)
	 */
	public function enqueue_assets($hook) {
		// Solo cargar en nuestra página
		if ($hook !== 'appearance_page_apus-theme-settings') {
			return;
		}

		// Bootstrap 5.3.2 CSS
		wp_enqueue_style(
			'bootstrap',
			'https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/bootstrap.min.css',
			array(),
			'5.3.2'
		);

		// Bootstrap Icons
		wp_enqueue_style(
			'bootstrap-icons',
			'https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.1/font/bootstrap-icons.css',
			array(),
			'1.11.1'
		);

		// Admin Panel CSS (Core)
		wp_enqueue_style(
			'apus-admin-panel-css',
			APUS_ADMIN_PANEL_URL . 'assets/css/admin-panel.css',
			array('bootstrap'),
			APUS_ADMIN_PANEL_VERSION
		);


		// Bootstrap 5.3.2 JS
		wp_enqueue_script(
			'bootstrap',
			'https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/js/bootstrap.bundle.min.js',
			array(),
			'5.3.2',
			true
		);

		// Axios (para AJAX)
		wp_enqueue_script(
			'axios',
			'https://cdn.jsdelivr.net/npm/axios@1.6.0/dist/axios.min.js',
			array(),
			'1.6.0',
			true
		);


		// Admin Panel JS (Core)
		wp_enqueue_script(
			'apus-admin-panel-js',
			APUS_ADMIN_PANEL_URL . 'assets/js/admin-app.js',
			array('jquery', 'axios'),
			APUS_ADMIN_PANEL_VERSION,
			true
		);

		// Pasar datos a JavaScript
		wp_localize_script('apus-admin-panel-js', 'apusAdminData', array(
			'ajaxUrl' => admin_url('admin-ajax.php'),
			'nonce'   => wp_create_nonce('apus_admin_nonce')
		));
	}
}

// Instanciar clase
new APUS_Admin_Menu();