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

class WZHF_Tools {
  public static function bootstrap(){
    add_action('rest_api_init', function(){
      register_rest_route(WZHF_NS, '/tools', array(
        'methods'             => WP_REST_Server::CREATABLE,
        'permission_callback' => function(){ return current_user_can('manage_woocommerce'); },
        'callback'            => array(__CLASS__, 'handle'),
      ));
    });
  }


  public static function patch_so_from_order($order_id){
    $order = wc_get_order($order_id);
    if (!$order) return array('ok'=>false,'error'=>'order_not_found');

    global $wpdb; $map = $wpdb->prefix . 'wzhf_orders';
    $so_id = $wpdb->get_var($wpdb->prepare("SELECT zoho_salesorder_id FROM $map WHERE wc_order_id=%d", $order_id));
    if(!$so_id) return array('ok'=>false,'error'=>'no_mapping');

    // Build clamped shipping address from order (fallback billing)
    $ship_addr1 = trim($order->get_shipping_address_1());
    $ship_addr2 = trim($order->get_shipping_address_2());
    if($ship_addr1==='' && $ship_addr2===''){
      $ship_addr1 = trim($order->get_billing_address_1());
      $ship_addr2 = trim($order->get_billing_address_2());
    }
    $ship_city  = trim($order->get_shipping_city()) ?: trim($order->get_billing_city());
    $ship_state = trim($order->get_shipping_state()) ?: trim($order->get_billing_state());
    $ship_zip   = trim($order->get_shipping_postcode()) ?: trim($order->get_billing_postcode());
    $ship_ctry  = trim($order->get_shipping_country()) ?: trim($order->get_billing_country());
    $addr_line  = trim(preg_replace('/\s+/u',' ', trim($ship_addr1.' '.($ship_addr2?:''))));

    if(function_exists('mb_substr')){
      $address = mb_substr($addr_line,0,90,'UTF-8');
      $city    = mb_substr($ship_city,0,40,'UTF-8');
      $state   = mb_substr($ship_state,0,30,'UTF-8');
      $zip     = mb_substr($ship_zip,0,20,'UTF-8');
      $country = mb_substr($ship_ctry,0,30,'UTF-8');
    } else {
      $address = substr($addr_line,0,90);
      $city    = substr($ship_city,0,40);
      $state   = substr($ship_state,0,30);
      $zip     = substr($ship_zip,0,20);
      $country = substr($ship_ctry,0,30);
    }

    $payload = array('shipping_address'=>array(
      'address'=>$address,'city'=>$city,'state'=>$state,'zip'=>$zip,'country'=>$country
    ));
    WZHF_Logger::log('SO patch:addr-lengths', array(
      'order_id'=>$order_id,
      'address'=> (function_exists('mb_strlen')?mb_strlen($address,'UTF-8'):strlen($address)),
      'city'=> (function_exists('mb_strlen')?mb_strlen($city,'UTF-8'):strlen($city)),
      'state'=> (function_exists('mb_strlen')?mb_strlen($state,'UTF-8'):strlen($state)),
      'zip'=> (function_exists('mb_strlen')?mb_strlen($zip,'UTF-8'):strlen($zip)),
      'country'=> (function_exists('mb_strlen')?mb_strlen($country,'UTF-8'):strlen($country))
    ));

    $z = new WZHF_Zoho();
    if(!$z->is_connected()) return array('ok'=>false,'error'=>'zoho_disconnected');

    // Reuse private request via reflection
    $ref = new ReflectionClass('WZHF_Zoho');
    $m = $ref->getMethod('request'); $m->setAccessible(true);
    $res = $m->invoke($z, 'PUT', '/salesorders/'.rawurlencode($so_id), $payload);

    $body = $res[0]; $err = $res[1];
    if($body && !empty($body['salesorder'])){
      WZHF_Logger::log('SO patch:ok', array('order_id'=>$order_id,'so'=>$so_id));
      return array('ok'=>true,'so'=>$so_id);
    } else {
      WZHF_Logger::log('SO patch:error', array('order_id'=>$order_id,'so'=>$so_id,'err'=>$err));
      return array('ok'=>false,'error'=>'patch_failed','details'=>$err);
    }
  }

  public static function handle(WP_REST_Request $req){
    if (!current_user_can('manage_woocommerce')) {
      return new WP_REST_Response(array('error' => 'forbidden'), 403);
    }
    $op = sanitize_text_field($req->get_param('op') ? $req->get_param('op') : '');

    switch ($op) {
      case 'reset_map': {
        $order_id = absint($req->get_param('order_id'));
        if (!$order_id) return new WP_REST_Response(array('error' => 'order_id required'), 400);

        global $wpdb;
        $map = $wpdb->prefix . 'wzhf_orders';
        $wpdb->delete($map, array('wc_order_id' => $order_id));
        delete_post_meta($order_id, '_tracking_number');
        delete_post_meta($order_id, '_tracking_carrier');

        WZHF_Logger::log('tools:reset_map', array('order_id' => $order_id));
        return new WP_REST_Response(array('ok' => true, 'message' => 'Mapping reset'), 200);
      }

      case 'resend_so': {
        $order_id = absint($req->get_param('order_id'));
        if (!$order_id) return new WP_REST_Response(array('error' => 'order_id required'), 400);

        $order = wc_get_order($order_id);
        if (!$order) return new WP_REST_Response(array('error' => 'order_not_found'), 404);

        global $wpdb;
        $map = $wpdb->prefix . 'wzhf_orders';

        // Drop mapping to allow re-send
        $wpdb->delete($map, array('wc_order_id' => $order_id));
        WZHF_Logger::log('tools:resend_so', array('order_id' => $order_id));

        // Try to create
        WZHF_Orders_Sync::create_sales_order($order_id);

        // Check result
        $created = $wpdb->get_var($wpdb->prepare("SELECT zoho_salesorder_id FROM $map WHERE wc_order_id=%d", $order_id));
        if ($created) {
          return new WP_REST_Response(array('ok' => true, 'message' => 'Created SO: ' . $created), 200);
        }

        // Not created; hint common reasons
        $z = new WZHF_Zoho();
        if (!$z->is_connected()) {
          return new WP_REST_Response(array('error' => 'zoho_disconnected', 'message' => 'Zoho not connected (refresh OAuth).'), 500);
        }
        return new WP_REST_Response(array('error' => 'resend_failed', 'message' => 'SO not created. See WooZoho → Логи for details.'), 500);
      }


      case 'patch_so_address': {
        $order_id = absint($req->get_param('order_id'));
        if (!$order_id) return new WP_REST_Response(array('error' => 'order_id required'), 400);
        $order = wc_get_order($order_id);
        if (!$order) return new WP_REST_Response(array('error' => 'order_not_found'), 404);

        global $wpdb; $map = $wpdb->prefix . 'wzhf_orders';
        $so_id = $wpdb->get_var($wpdb->prepare("SELECT zoho_salesorder_id FROM $map WHERE wc_order_id=%d", $order_id));
        if(!$so_id) return new WP_REST_Response(array('error'=>'no_mapping','message'=>'SO mapping not found. Создайте SO сначала.'), 400);

        // Build clamped shipping address from order
        $ship_addr1 = trim($order->get_shipping_address_1());
        $ship_addr2 = trim($order->get_shipping_address_2());
        if($ship_addr1==='' && $ship_addr2===''){
          // fallback to billing
          $ship_addr1 = trim($order->get_billing_address_1());
          $ship_addr2 = trim($order->get_billing_address_2());
        }
        $ship_city  = trim($order->get_shipping_city()) ?: trim($order->get_billing_city());
        $ship_state = trim($order->get_shipping_state()) ?: trim($order->get_billing_state());
        $ship_zip   = trim($order->get_shipping_postcode()) ?: trim($order->get_billing_postcode());
        $ship_ctry  = trim($order->get_shipping_country()) ?: trim($order->get_billing_country());
        $addr_line  = trim(preg_replace('/\s+/u',' ', trim($ship_addr1.' '.($ship_addr2?:''))));

        // Clamp
        if(function_exists('mb_substr')){
          $address = mb_substr($addr_line,0,90,'UTF-8');
          $city    = mb_substr($ship_city,0,40,'UTF-8');
          $state   = mb_substr($ship_state,0,30,'UTF-8');
          $zip     = mb_substr($ship_zip,0,20,'UTF-8');
          $country = mb_substr($ship_ctry,0,30,'UTF-8');
        } else {
          $address = substr($addr_line,0,90);
          $city    = substr($ship_city,0,40);
          $state   = substr($ship_state,0,30);
          $zip     = substr($ship_zip,0,20);
          $country = substr($ship_ctry,0,30);
        }

        $payload = array('shipping_address'=>array(
          'address'=>$address,'city'=>$city,'state'=>$state,'zip'=>$zip,'country'=>$country
        ));
        WZHF_Logger::log('SO patch:addr-lengths', array(
          'order_id'=>$order_id,
          'address'=> (function_exists('mb_strlen')?mb_strlen($address,'UTF-8'):strlen($address)),
          'city'=> (function_exists('mb_strlen')?mb_strlen($city,'UTF-8'):strlen($city)),
          'state'=> (function_exists('mb_strlen')?mb_strlen($state,'UTF-8'):strlen($state)),
          'zip'=> (function_exists('mb_strlen')?mb_strlen($zip,'UTF-8'):strlen($zip)),
          'country'=> (function_exists('mb_strlen')?mb_strlen($country,'UTF-8'):strlen($country))
        ));

        $z = new WZHF_Zoho();
        if(!$z->is_connected()) return new WP_REST_Response(array('error'=>'zoho_disconnected'),500);

        // Use Zoho request via reflection (quick reuse)
        $ref = new ReflectionClass('WZHF_Zoho');
        $m = $ref->getMethod('request'); $m->setAccessible(true);
        $res = $m->invoke($z, 'PUT', '/salesorders/'.rawurlencode($so_id), $payload);
        $body = $res[0]; $err = $res[1];
        if($body && !empty($body['salesorder'])){
          WZHF_Logger::log('SO patch:ok', array('order_id'=>$order_id,'so'=>$so_id));
          return new WP_REST_Response(array('ok'=>true,'message'=>'Patched SO address: '+$so_id),200);
        } else {
          WZHF_Logger::log('SO patch:error', array('order_id'=>$order_id,'so'=>$so_id,'err'=>$err));
          return new WP_REST_Response(array('error'=>'patch_failed','details'=>$err),500);
        }
      }
      default:
        return new WP_REST_Response(array('error' => 'unknown_op'), 400);
    }
  }
}