<?php
/**
 * Detect Checkout Type (Classic vs Block)
 * 
 * Add to: includes/class-cfep-checkout-detector.php
 */

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

class CFEP_Checkout_Detector {
    
    private static $instance = null;
    
    public static function instance() {
        if (is_null(self::$instance)) {
            self::$instance = new self();
        }
        return self::$instance;
    }
    
    /**
     * Detect checkout type
     * 
     * @return string 'classic' or 'block'
     */
    public function detect_checkout_type() {
        // Get WooCommerce checkout page
        $checkout_page_id = wc_get_page_id('checkout');
        
        if (!$checkout_page_id || $checkout_page_id <= 0) {
            return 'classic';
        }
        
        $checkout_page = get_post($checkout_page_id);
        
        if (!$checkout_page) {
            return 'classic';
        }
        
        $content = $checkout_page->post_content;
        
        // Check for WooCommerce Block Checkout
        if (has_blocks($content)) {
            if (strpos($content, 'woocommerce/checkout') !== false) {
                return 'block';
            }
        }
        
        // Check for Classic Shortcode
        if (has_shortcode($content, 'woocommerce_checkout')) {
            return 'classic';
        }
        
        // Default to classic
        return 'classic';
    }
    
    /**
     * Get checkout type
     */
    public function get_checkout_type() {
        return $this->detect_checkout_type();
    }
}