paragraphs_migration.module

<?php

/**
 * @file
 * Contains paragraphs_migration.module.
 */

use Drupal\Core\Database\Query\AlterableInterface;
use Drupal\Core\Database\Query\SelectInterface;
use Drupal\paragraphs_migration\MigrationPluginsAlterer;
use Drupal\paragraphs_migration\Plugin\migrate\ParagraphsCallback;
use Drupal\paragraphs_migration\Utility\MultifieldMigration;

/**
 * Implements hook_migration_plugins_alter().
 *
 * @todo refactor/rethink this when
 * https://www.drupal.org/project/drupal/issues/2904765 is resolved
 */
function paragraphs_migration_migration_plugins_alter(array &$migrations) {
  foreach ($migrations as $key => &$value) {
    $migrations[$key]['idMap'] = ['plugin' => 'smart_sql'];
    if ($value['provider'] === 'paragraphs') {
      unset($migrations[$key]);
    }
  }
  $migration_plugins_alterer = \Drupal::service('paragraphs_migration.migration_plugins_alterer');
  assert($migration_plugins_alterer instanceof MigrationPluginsAlterer);
  $migration_plugins_alterer->alterMigrationPlugins($migrations);
}

/**
 * Implements hook_migrate_process_info_alter().
 */
function paragraphs_migration_migrate_process_info_alter(&$definitions) {
  // Adds the improved version of 'callback' process plugin from Drupal core
  // 9.2.0+. That version comes with a new option that makes us able to use the
  // return value of functions with multiple arguments, meaning that we can
  // remove the 'field_' prefix of field collection source 'bundles'.
  // @see https://www.drupal.org/node/3205079
  if (
    (
      version_compare(\Drupal::VERSION, '9.2.0', 'lt') &&
      \Drupal::VERSION !== '9.2.x-dev'
    ) &&
    !empty($definitions['callback'])
  ) {
    $definitions['paragraphs_callback'] = $definitions['callback'];
    $definitions['paragraphs_callback']['class'] = ParagraphsCallback::class;
    $definitions['paragraphs_callback']['provider'] = 'paragraphs';
  }
}

/**
 * Implements hook_query_alter().
 */
function paragraphs_migration_query_migrate_field_value_alter(AlterableInterface $query) {
  if (!$query instanceof SelectInterface) {
    return;
  }

  // Requires core patch at https://drupal.org/i/3218294
  MultifieldMigration::addCruicalMultifieldFieldProperties($query);
}

/**
 * Alter the registry of modules implementing a hook.
 *
 * This hook is invoked during \Drupal::moduleHandler()->getImplementations().
 * A module may implement this hook in order to reorder the implementing
 * modules, which are otherwise ordered by the module's system weight.
 *
 * Note that hooks invoked using \Drupal::moduleHandler->alter() can have
 * multiple variations(such as hook_form_alter() and hook_form_FORM_ID_alter()).
 * \Drupal::moduleHandler->alter() will call all such variants defined by a
 * single module in turn. For the purposes of hook_module_implements_alter(),
 * these variants are treated as a single hook. Thus, to ensure that your
 * implementation of hook_form_FORM_ID_alter() is called at the right time,
 * you will have to change the order of hook_form_alter() implementation in
 * hook_module_implements_alter().
 *
 * @param array $implementations
 *   An array keyed by the module's name. The value of each item corresponds
 *   to a $group, which is usually FALSE, unless the implementation is in a
 *   file named $module.$group.inc.
 * @param string $hook
 *   The name of the module hook being implemented.
 */
function paragraphs_migration_module_implements_alter(array &$implementations, string $hook) {
  $migration_hooks = [
    'migration_plugins_alter',
    'migrate_field_info_alter',
  ];
  if (in_array($hook, $migration_hooks, TRUE)) {
    // Remove every paragraphs hook implementations.
    unset($implementations['paragraphs']);
  }
}

/**
 * Implements hook_migrate_field_info_alter().
 */
function paragraphs_migration_migrate_field_info_alter(&$definitions) {
  foreach ($definitions as $definition) {
    if ($definition['provider'] === 'paragraphs') {
      unset($definitions[$definition['id']]);
    }
  }
}