<?php

/**
 * @file
 * The data stream module.
 */

use Drupal\data_stream\Entity\DataStreamInterface;
use Drupal\Core\Entity\Display\EntityViewDisplayInterface;

/**
 * Implements hook_ENTITY_TYPE_view_alter().
 */
function data_stream_data_stream_view_alter(array &$build, DataStreamInterface $data_stream, EntityViewDisplayInterface $display) {

  // Bail if there is no entity.
  if (empty($data_stream)) {
    return;
  }

  // Bail if not the basic type.
  if ($data_stream->bundle() != 'basic') {
    return;
  }

  // Add the basic data block view.
  $build['views']['data'] = views_embed_view('data_stream_basic_data', 'block', $data_stream->id());
}

/**
 * Implements hook_ENTITY_TYPE_delete().
 */
function data_stream_data_stream_delete(DataStreamInterface $data_stream) {

  // @todo Considerations for improved entity reference integrity?
  // Remove any references to this data stream from the asset.data_stream field.
  \Drupal::database()->delete('asset__data_stream')
    ->condition('data_stream_target_id', $data_stream->id())
    ->execute();
}