<?php

/**
 * @file
 * Module file for 'rollbar'.
 */

/**
 * Implements hook_page_attachments_alter().
 *
 * Retrieves the configured settings for the rollbar library.  Attaches the
 * rollbar JS snippet to the page, along with the retrieved settings as
 * part of the `drupalSettings` object.
 */
function rollbar_page_attachments_alter(array &$attachments) {
  $config = \Drupal::config('rollbar.settings');

  // We only add the library and settings to the page if enabled.
  if (!empty($config) && $config->get('enabled')) {
    $settings = [
      'access_token' => $config->get('access_token'),
      'capture_uncaught' => $config->get('capture_uncaught'),
      'capture_unhandled_rejections' => $config->get('capture_unhandled_rejections'),
      'environment' => $config->get('environment'),
      'rollbar_js_url' => $config->get('rollbar_js_url'),
    ];

    // Extract host white list, if set, and add it to configuration.
    if ($hosts = $config->get('host_white_list')) {
      $host_list = explode(',', trim($hosts));

      if (!empty($host_list)) {
        $settings['host_white_list'] = $host_list;
      }
    }

    // Allow alteration of the rollbar settings by other modules.
    \Drupal::moduleHandler()->alter('rollbar_settings', $settings);

    $attachments['#attached']['library'][] = 'rollbar/global';
    $attachments['#attached']['drupalSettings']['rollbar'] = $settings;
  }
}