<?php
/**
 * ActoSync Plugin Singleton Core
 * 
 * Orchestrates all plugin components and manages initialization.
 */

if (!defined('ABSPATH')) {
    exit;
}

class ActoSync_Plugin {
    
    private static $instance = null;

    /**
     * Get plugin singleton instance
     */
    public static function instance() {
        if (self::$instance === null) {
            self::$instance = new self();
        }
        return self::$instance;
    }

    /**
     * Private constructor - use instance() instead
     */
    private function __construct() {
        $this->init();
    }

    /**
     * Initialize all components
     */
    private function init() {
        // Admin component
        new ActoSync_Admin();

        // Frontend component must always initialize so AJAX hooks are available in admin-ajax.php.
        new ActoSync_Frontend();
    }
}