<?php
/**
 * Main bootstrap of the plugin.
 *
 * Single entry point after `plugins_loaded`. Contains no
 * business logic itself — it only assembles the pieces
 * (capabilities, admin, future services), each already separated in its
 * own class (separation of concerns in the CORE).
 *
 * @package VEFmultiBooking
 */

defined( 'ABSPATH' ) || exit;

/**
 * Class VEFMB_Plugin
 */
class VEFMB_Plugin {

	/**
	 * Single instance.
	 *
	 * @var VEFMB_Plugin|null
	 */
	private static $instance = null;

	/**
	 * Returns the single instance of the plugin, creating it if needed.
	 *
	 * @return VEFMB_Plugin
	 */
	public static function instance() {
		if ( null === self::$instance ) {
			self::$instance = new self();
			self::$instance->init();
		}

		return self::$instance;
	}

	/**
	 * Private constructor — go through instance().
	 */
	private function __construct() {}

	/**
	 * Initialises the plugin: idempotent capability, one-time cleanup of
	 * the former direct-download build, admin when relevant.
	 *
	 * Translations come from translate.wordpress.org (language packs).
	 *
	 * @return void
	 */
	private function init() {
		VEFMB_Capabilities::ensure_registered();

		global $wpdb;
		VEFMB_DB_Installer::maybe_upgrade( $wpdb );

		// One-time cleanup of the former direct-download build — admin
		// requests only (never on the front end).
		add_action( 'admin_init', array( 'VEFMB_Legacy_Cleanup', 'maybe_run' ) );

		VEFMB_Cron::hooks();
		VEFMB_Participants_Service::hooks();
		VEFMB_I18n::hooks();
		VEFMB_Style::hooks();
		VEFMB_Free_License::hooks();
		VEFMB_Support_Access::hooks();
		VEFMB_Privacy::hooks();

		add_action( 'rest_api_init', array( 'VEFMB_Webhook_Controller', 'register_routes' ) );
		add_action( 'rest_api_init', array( 'VEFMB_Frontend_Controller', 'register_routes' ) );

		VEFMB_Gutenberg::hooks();
		VEFMB_Divi5::hooks();
		VEFMB_Elementor::hooks();
		VEFMB_Email_Service::hooks();

		if ( is_admin() ) {
			VEFMB_Admin_Tabs::hooks();
			VEFMB_Admin_Flow::hooks();
			VEFMB_Free_License_Admin::hooks();
			VEFMB_Support_Access_Admin::hooks();
			VEFMB_Support_Chat::hooks();
			VEFMB_Admin::instance();
			VEFMB_Ajax_Controller::hooks();
		}

		add_action( 'init', array( 'VEFMB_Renderer', 'register_assets' ), 5 );

		/**
		 * Signals that the VEFmultiBooking CORE is ready — hook
		 * point for VEFmultiBooking Pro (a separate plugin that extends
		 * this same CORE, never a copy of the engine) and for any future
		 * extension plugin.
		 */
		do_action( 'vefmb_loaded' );
	}
}