<?php
/**
 * Block Checkout Handler
 * Main entry point for Block Checkout functionality
 */

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

class CFEP_Block_Handler {
    
    private static $instance = null;
    
    public static function instance() {
        if (is_null(self::$instance)) {
            self::$instance = new self();
        }
        return self::$instance;
    }
    
    private function __construct() {
        // Register block integration - DISABLED (file doesn't exist)
        // add_action('woocommerce_blocks_loaded', array($this, 'register_integration'));
        
        // Extend Store API - DISABLED (not needed)
        // add_action('woocommerce_blocks_loaded', array($this, 'extend_store_api'));
        
        // Save order data
        add_action('woocommerce_store_api_checkout_update_order_from_request', array($this, 'save_order_data'), 10, 2);
    }
    
    /**
     * Register the block integration
     */
    public function register_integration() {
        if (!class_exists('Automattic\WooCommerce\Blocks\Integrations\IntegrationRegistry')) {
            return;
        }
        
        require_once CFEP_PLUGIN_DIR . 'includes/class-cfep-block-integration.php';
        
        add_action(
            'woocommerce_blocks_checkout_block_registration',
            function($integration_registry) {
                $integration_registry->register(new CFEP_Block_Integration());
            }
        );
    }
    
    /**
     * Extend Store API endpoints
     */
    public function extend_store_api() {
        if (!function_exists('woocommerce_store_api_register_endpoint_data')) {
            return;
        }
        
        require_once CFEP_PLUGIN_DIR . 'includes/class-cfep-block-extend-store.php';
        CFEP_Block_Extend_Store::init();
    }
    
    /**
     * Save custom fields to order
     */
    public function save_order_data($order, $request) {
        $block_manager = CFEP_Block_Field_Manager::instance();
        $custom_fields = $block_manager->get_all_fields(null, true);
        
        $request_data = $request->get_params();
        
        foreach ($custom_fields as $field) {
            // Skip default WooCommerce fields
            if ((int) $field['is_default'] === 1) {
                continue;
            }
            
            $field_key = $field['field_key'];
            $value = null;
            
            // Check for field value in request
            if (isset($request_data[$field_key])) {
                $value = $request_data[$field_key];
            } elseif (isset($request_data['extensions']['cfep-block-fields'][$field_key])) {
                $value = $request_data['extensions']['cfep-block-fields'][$field_key];
            }
            
            if ($value !== null) {
                $order->update_meta_data('_' . $field_key, sanitize_text_field($value));
            }
        }
        
        $order->save();
    }
}