cu_rave_alerts.module

<?php

/**
 * @file
 * Module file for cu_rave_alerts.
 */

use Drupal\Core\Block\BlockPluginInterface;
use Drupal\Core\Url;
use Drupal\Core\Link;

/**
 * Implements hook_preprocess_block().
 */
function cu_rave_alerts_preprocess_block(&$variables) {
  if ($variables['plugin_id'] == 'block_content:2bc8be86-ad95-4eee-93da-62edd00095a2') {
    $variables['#cache']['max-age'] = 0;
  }
}

/**
 * Implements hook_cron().
 */
function cu_rave_alerts_cron() {
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL, 'https://www.getrave.com/rss/cuboulder/channel1');
  curl_setopt($ch, CURLOPT_POST, 0);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
  curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
  curl_setopt($ch, CURLOPT_USERAGENT, "SomeUserAgent");
  curl_setopt($ch, CURLOPT_COOKIE, 'AspxAutoDetectCookieSupport=1');
  $output = curl_exec($ch);
  if ($output === FALSE) {
    $error = curl_error($ch);
    \Drupal::logger('cu_rave_alerts')->error($error);
  } else {
    // Convert xml string into an object
    $xml = simplexml_load_string($output);
    // Convert into json
    $json = json_encode($xml);
    // Convert into associative array
    $rave = json_decode($json, true);
    $title = $rave['channel']['item']['title'];
    $pub_date = strtotime($rave['channel']['item']['pubDate']);
    $rave_clear_status = \Drupal::state()->get('cu_rave_alerts.clear_status');
    $rave_pub_date = \Drupal::state()->get('cu_rave_alerts.pub_date');
    // Don't run unless one of the two cases below or the publish date has
    // changed, which is checked in the if statement.
    $run = 0;
    // Run in the case that the clear has been set, but doesn't reflect local
    // state.
    if ((preg_match('/\[CLEAR\]/i', $title, $matches)) && ($rave_clear_status == FALSE)) {
      $run = 1;
    }
    // Run in the case that clear is not set on the title and it is set to
    // clear locally.
    if ((!preg_match('/\[CLEAR\]/i', $title, $matches)) && ($rave_clear_status == TRUE)) {
      $run = 1;
    }

    if (($run) || ($pub_date > $rave_pub_date)) {
      // Update text in news subscription block.
      $query = \Drupal::database()->select('block_content_field_data', 'bcb');
      $query->fields('bcb', ['id']);
      $query->condition('bcb.info', 'CU Rave Alerts');
      $results = $query->execute();
      $results = $results->fetch();
      $rave_block_id = $results->id;
      $block = \Drupal::service('entity_type.manager')->getStorage('block_content');
      $bl = $block->load($rave_block_id);
      if (preg_match('/\[CLEAR\]/i', $title, $matches)) {
        $bl->set('body', '');
        // Clear updates pub date
        \Drupal::state()->set('cu_rave_alerts.pub_date', $pub_date);
        // Bring inline with the clear status
        \Drupal::state()->set('cu_rave_alerts.clear_status', TRUE);
      } else {
        $description = $rave['channel']['item']['description'];
        $rave_link = $rave['channel']['item']['guid'];
        if (!empty($rave_link)) {
          $url = Url::fromUri($rave_link);
        } else {
          $url = Url::fromUri('https://alerts.colorado.edu/');
        }
        $link = Link::fromTextAndUrl(t('Read More'), $url);
        $link_to_thing = $link->toString();
        $bl->set('body', "<div class='banner banner--oit-cu-rave-alerts'>[svg name=exclamation width=20 color=f2f2f2][/svg] $description $link_to_thing</div>");
        // Set new pub date
        \Drupal::state()->set('cu_rave_alerts.pub_date', $pub_date);
        // Bring inline with the clear status
        \Drupal::state()->set('cu_rave_alerts.clear_status', FALSE);
      }
      $bl->body->format = 'rich_text';
      $bl->save();
    }

  }
  curl_close($ch);
}