ethereum.module

<?php

/**
 * @file
 * Contains ethereum.module.
 */

use Drupal\Core\Asset\AttachedAssetsInterface;
use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\Core\Url;
use Drupal\ethereum\Entity\EthereumServer;
use League\CommonMark\CommonMarkConverter;

/**
 * Implements hook_help().
 *
 * @inheritdoc
 */
function ethereum_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    // Main module help for the ethereum_user_connector module.
    case 'help.page.ethereum':
      return ethereum_get_readme_html('ethereum');
    default:
      return '';
  }
}

/**
 * Implements hook_help().
 */
function ethereum_get_readme_html($module) {
  $path = drupal_get_path('module', $module) . '/Readme.md';
  $readme = @file_get_contents(DRUPAL_ROOT . '/'. $path);
  if($readme === FALSE) {
    return "<div class='messages messages--warning'>Missing Readme.md for $path.</div>";
  }
  else {
    $converter = new CommonMarkConverter();
    return $converter->convertToHtml($readme);
  }
}

/**
 * Implements hook_field_formatter_info_alter().
 */
function ethereum_field_formatter_info_alter(array &$info) {
  // Allow the 'Ethereum address' field type to use the existing 'Basic string'
  // formatter.
  $info['basic_string']['field_types'][] = 'ethereum_address';
}

/**
 * Implements hook_field_views_data().
 */
function ethereum_field_views_data(\Drupal\field\FieldStorageConfigInterface $field_storage) {
  $data = views_field_default_views_data($field_storage);
  foreach ($data as $table_name => $table_data) {
    // Add the relationship only on the target_id field.
    $data[$table_name][$field_storage->getName() . '_network']['filter']['id'] = 'in_operator';
    $data[$table_name][$field_storage->getName() . '_network']['filter']['options callback'] = '_ethereum_get_networks_options';
  }

  return $data;
}

/**
 * Returns the Ethereum networks as an array suitable for an options element.
 *
 * @return array
 *   An array of Ethereum Networks containing the network name, ID, and
 *   description, keyed by the network ID.
 */
function _ethereum_get_networks_options() {
  return \Drupal::service('ethereum.manager')->getNetworksAsOptions();
}

/**
 * Implements hook_js_settings_alter().
 *
 * @param $settings
 * @param \Drupal\Core\Asset\AttachedAssetsInterface $assets
 */
function ethereum_js_settings_alter(&$settings, AttachedAssetsInterface $assets) {
  // Provide the URL of the current server in drupalSettings to allow JavaScript
  // code to rely on an instantiated Web3 object.
  $cfg = \Drupal::config('ethereum.settings');

  if ($cfg->get('frontend_server') !== 'disabled') {
    $frontend_server = $cfg->get('frontend_server') ? $cfg->get('frontend_server') : $cfg->get('current_server');
    $settings['ethereum']['frontendServerHost'] = EthereumServer::load($frontend_server)->getUrl();
  }
}

/**
 * Implements hook_toolbar().
 */
function ethereum_toolbar() {
  /** @var \Drupal\ethereum\EthereumManagerInterface $ethereum_manager */
  $ethereum_manager = \Drupal::service('ethereum.manager');
  $current_server = $ethereum_manager->getCurrentServer();
  $networks = $ethereum_manager->getAllNetworks();

  $items['ethereum'] = [
    '#type' => 'toolbar_item',
    'tab' => [
      '#type' => 'link',
      '#title' => t('Network: <span class="network-label">@network_label</span>', ['@network_label' => $networks[$current_server->getNetworkId()]['label']]),
      '#url' => Url::fromRoute('ethereum.status'),
      '#attributes' => [
        'title' => t('Current Ethereum network'),
        'class' => ['toolbar-icon', 'toolbar-icon-ethereum'],
      ],
    ],
    '#wrapper_attributes' => [
      'class' => ['ethereum-toolbar-tab'],
    ],
    '#weight' => 1500,
    '#attached' => [
      'library' => [
        'ethereum/ethereum-toolbar',
      ],
    ],
  ];

  // Add a special class to the wrapper if we are on the main network so we
  // can highlight it with a different color.
  if ($current_server->getNetworkId() === '1') {
    $items['ethereum']['#wrapper_attributes']['class'][] = 'ethereum-toolbar-tab--is-mainnet';
  }

  return $items;
}