geolocation-8.x-3.x-dev/src/Feeds/Target/Geolocation.php

<?php

namespace Drupal\geolocation\Feeds\Target;

use Drupal\Core\Field\FieldDefinitionInterface;
use Drupal\feeds\Exception\EmptyFeedException;
use Drupal\feeds\Exception\TargetValidationException;
use Drupal\feeds\FieldTargetDefinition;
use Drupal\feeds\Plugin\Type\Target\FieldTargetBase;

/**
 * Defines a geolocation field mapper.
 *
 * @FeedsTarget(
 *   id = "geolocation_feeds_target",
 *   field_types = {"geolocation"}
 * )
 */
class Geolocation extends FieldTargetBase {

  /**
   * {@inheritdoc}
   */
  protected static function prepareTarget(FieldDefinitionInterface $field_definition) {
    return FieldTargetDefinition::createFromFieldDefinition($field_definition)
      ->addProperty('lat')
      ->addProperty('lng');
  }

  /**
   * {@inheritdoc}
   */
  protected function prepareValue($delta, array &$values): array {
    // Both latitude and longitude must be set in order to prepare the values.
    // Check if both contain values.
    foreach (['lat', 'lng'] as $key) {
      if (!isset($values[$key])) {
        // Value is not set. Abort.
        throw new EmptyFeedException();
      }
      if (empty($values[$key]) && $values[$key] !== '0' && $values[$key] !== 0) {
        // Value is empty and is not zero. Abort.
        throw new EmptyFeedException();
      }
    }

    $values['lat'] = floatval($values['lat']);
    $values['lng'] = floatval($values['lng']);
    $values['lat_sin'] = sin(deg2rad($values['lat']));
    $values['lat_cos'] = cos(deg2rad($values['lat']));
    $values['lng_rad'] = deg2rad($values['lng']);

    return $values;
  }

  /**
   * {@inheritdoc}
   */
  protected function prepareValues(array $values): array {
    $return = [];
    foreach ($values as $delta => $columns) {
      try {
        $this->prepareValue($delta, $columns);
        $return[] = $columns;
      }
      catch (EmptyFeedException $e) {
        // Nothing wrong here.
      }
      catch (TargetValidationException $e) {
        // Validation failed.
        \Drupal::messenger()->addError($e->getMessage());
      }
    }

    return $return;
  }

}