<?php

namespace Drupal\site_users\Plugin\Field\FieldFormatter;

use Drupal\Core\Field\FieldItemListInterface;
use Drupal\Core\Field\FormatterBase;
use Drupal\Core\Url;
use Drupal\site_users\Plugin\Field\FieldType\SocialLinkItem;

/**
 * Plugin implementation of the 'social_link_formatter' formatter.
 *
 * @FieldFormatter(
 *   id = "social_link_formatter",
 *   label = @Translation("Social link"),
 *   field_types = {
 *     "social_link"
 *   }
 * )
 */
class SocialLinkFormatter extends FormatterBase {

  /**
   * {@inheritdoc}
   */
  public function viewElements(FieldItemListInterface $items, $langcode): array {
    $elements = [];
    $networks = SocialLinkItem::getNetworks();

    foreach ($items as $delta => $item) {
      if ($item->isEmpty()) {
        continue;
      }

      $network_label = $networks[$item->network] ?? $item->network;

      $elements[$delta] = [
        '#type' => 'link',
        '#title' => $network_label,
        '#url' => Url::fromUri($item->url),
        '#attributes' => [
          'class' => ['social-link', 'social-link--' . $item->network],
          'target' => '_blank',
          'rel' => 'noopener noreferrer',
        ],
      ];
    }

    return $elements;
  }

}