<?php
if (!defined('ABSPATH')) {
    exit;
}

class EnspirePlugins_ACFW_Fields {
    private $custom_fields = array();

    public function __construct() {
        $this->load_custom_fields();
        
        add_action('woocommerce_checkout_update_order_meta', array($this, 'save_custom_fields'));
    }
    
    private function load_custom_fields() {
        $settings = get_option('enspireplugins_acfw_settings', array());
        $this->custom_fields = isset($settings['custom_fields']) ? $settings['custom_fields'] : array();
    }

    public function get_custom_fields() {
        return $this->custom_fields;
    }
    
    public function save_custom_fields($order_id) {
        if (!isset($_POST['woocommerce-process-checkout-nonce']) || 
            !wp_verify_nonce(sanitize_text_field(wp_unslash($_POST['woocommerce-process-checkout-nonce'])), 'woocommerce-process_checkout')) {
            return;
        }

        foreach ($this->custom_fields as $field) {
            if (isset($field['active']) && $field['active'] === 'yes') {
                $field_id = 'enspireplugins_acfw_' . $field['id'];
                
                if (!empty($_POST[$field_id])) {
                    $value = sanitize_text_field(wp_unslash($_POST[
                        $field_id]));
                    update_post_meta($order_id, '_' . $field_id, $value);
                    update_post_meta($order_id, '_' . $field['id'], $value);
                }
            }
        }
    }
}