Development Roadmap for Commerce Migrate Ubercart

display node comments should be added to the roadmap since they provides valuable user feedback
#1324448: Migrate product comments?

Figuring out a way to migrate product kits would be great (though I guess I'm not entirely sure how it all fits into commerce; I understand multiple products can be referenced though I am unsure on what else is necessary.

Any idea how recurring fees would come over?

@CraigBetrand considering the functionality is a bit different, I don't know if there is a clear upgrade path for that... particularly since it's not part of the standard ubercart/drupal commerce packages.

Hey rfay, if you're interested in enabling some exotic stuff like taxes and discounts, the following could be an option. I have figured out that the easiest way to properly have your orders contain the correct discounts and taxes, is to resave an order in the commerce site.

This actually requires someone to manually setup the "corresponding" discounts and tax rules as the ubercart, which is the easiest way as there are different possibilities (coupons, discounts, taxes, vat, etc).

Once these rules are set up in the Commerce website, the saving of an order object will trigger the necessary actions to add discounts and taxes.

The following 2 lines of code actually do the job quite well:

$order = commerce_order_load($row->order_id);
$update_status = commerce_order_save($order);

I have created the batch functions which actually do this:

define('WK_MIG_BATCH_NUM_OPS', 25);
define('WK_MIG_BATCH_COUNT', 10);
/**
 * 
 */
function MODULENAME_batch_orders_form() {
  // Give helpful information about how many nodes are being operated on.
  $order_count = db_query('SELECT COUNT(DISTINCT order_id) FROM {commerce_order}')->fetchField();
  drupal_set_message();
  $form['description'] = array(
    '#type' => 'markup',
    '#markup' => t('Process all Ubercart orders to set the correct order total, taxes and discounts.') . '<br />',
  );
  $form['description']['#markup'] .= t('There are @order_count orders so it will require @count HTTP requests.', array(
    '@order_count' => $order_count, 
    '@count' => ceil($order_count / WK_MIG_BATCH_COUNT) 
  )) . '<br />';
  
  $form['submit'] = array(
    '#type' => 'submit',
    '#value' => 'Go',
  );
  return $form;
}


function MODULENAME_batch_orders_form_submit($form, &$form_state) {
  $_SESSION['MODULENAME']['orders_request_count'] = 0; // reset counter for debug information.
  $batch = MODULENAME_batch_orders();
  batch_set($batch);
}


/**
 * 
 */
function MODULENAME_batch_orders() {
  $operations = array();
  $operations[] = array('MODULENAME_batch_orders_op', array());
  $batch = array(
    'operations' => $operations,
    'finished' => 'MODULENAME_batch_orders_finished',
    'title' => t('Processing orders'),
    'init_message' => t('Post-process Orders is starting.'),
    'progress_message' => t('Processed @current out of @total.'),
    'error_message' => t('Post-process Orders has encountered an error.'),
    'file' => drupal_get_path('module', 'MODULENAME') . '/MODULENAME.admin.inc'
  );
  return $batch;
}

/**
 * 
 */
function MODULENAME_batch_orders_op(&$context) { 
  // Use the $context['sandbox'] at your convenience to store the
  // information needed to track progression between successive calls.
  if (empty($context['sandbox'])) {
    $context['sandbox'] = array();
    $context['sandbox']['progress'] = 0;
    $context['sandbox']['current_order'] = 0;

    // Save order count for the termination message.
    $context['sandbox']['max'] = db_query('SELECT COUNT(DISTINCT order_id) FROM {commerce_order}')->fetchField();
  }

  // Retrieve the next group of orderids.
  $result = db_select('commerce_order', 'co')
    ->fields('co', array('order_id'))
    ->orderBy('co.order_id', 'ASC')
    ->where('co.order_id > :order_id', array(':order_id' => $context['sandbox']['current_order']))
    ->extend('PagerDefault')
    ->limit(WK_MIG_BATCH_COUNT)
    ->execute();
  foreach ($result as $row) {
    $order = commerce_order_load($row->order_id);
    $update_status = commerce_order_save($order);
    $update_status = ($update_status) ? t('Success') : t('Failed');
    // Store some results for post-processing in the 'finished' callback.
    // The contents of 'results' will be available as $results in the
    // 'finished' function (in this example, MODULENAME_batch_orders_finished()).
    $context['results'][] = $order->order_id . ' : ' . check_plain($order->mail) . ' (' . $order->status . ') >>> ' . $update_status;
    
    // Update our progress information.
    $context['sandbox']['progress']++;
    $context['sandbox']['current_order'] = $order->order_id;
    $context['message'] = $order->order_id . ' : ' . check_plain($order->mail);
  }

  // Inform the batch engine that we are not finished,
  // and provide an estimation of the completion level we reached.
  if ($context['sandbox']['progress'] != $context['sandbox']['max']) {
    $context['finished'] = ($context['sandbox']['progress'] >= $context['sandbox']['max']);
  }
  _MODULENAME_batch_orders_update_http_requests();
}

/**
 * Batch 'finished' callback used by both batch 1 and batch 2.
 */
function MODULENAME_batch_orders_finished($success, $results, $operations) {
  if ($success) {
    // Here we could do something meaningful with the results.
    // We just display the number of nodes we processed...
    drupal_set_message(t('@count results processed in @requests HTTP requests.', array('@count' => count($results), '@requests' => _MODULENAME_batch_orders_get_http_requests())));
    //drupal_set_message(t('The final result was "%final"', array('%final' => end($results))));
    //dpm($results);
  }
  else {
    // An error occurred.
    // $operations contains the operations that remained unprocessed.
    $error_operation = reset($operations);
    drupal_set_message(t('An error occurred while processing @operation with arguments : @args', array('@operation' => $error_operation[0], '@args' => print_r($error_operation[0], TRUE))));
  }
}

/**
 * Utility function to count the HTTP requests in a session variable.
 */
function _MODULENAME_batch_orders_update_http_requests() {
  $_SESSION['MODULENAME']['orders_request_count']++;
}

function _MODULENAME_batch_orders_get_http_requests() {
  return !empty($_SESSION['MODULENAME']['orders_request_count']) ? $_SESSION['MODULENAME']['orders_request_count'] : 0;
}

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