islandora_scopus.module

<?php

/**
 * @file
 * Normal module functions.
 */

/**
 * Implements hook_menu().
 */
function islandora_scopus_menu() {
  return array(
    'admin/islandora/tools/badges/scopus' => array(
      'title' => 'Scopus',
      'description' => 'Configure Scopus integration.',
      'page callback' => 'drupal_get_form',
      'page arguments' => array('islandora_scopus_admin_form'),
      'access arguments' => array('administer site configuration'),
      'type' => MENU_LOCAL_TASK,
      'file' => 'includes/admin.form.inc',
    ),
  );
}

/**
 * Implements hook_block_info().
 */
function islandora_scopus_block_info() {
  return array(
    'islandora_scopus_badge' => array(
      'visibility' => BLOCK_VISIBILITY_LISTED,
      'pages' => 'islandora/object/*',
      'cache' => DRUPAL_CACHE_PER_PAGE,
      'info' => t('Islandora Scopus Badge'),
    ),
  );
}

/**
 * Implements hook_block_view().
 */
function islandora_scopus_block_view($delta = '') {
  module_load_include('inc', 'islandora_badges', 'includes/utilities');
  module_load_include('inc', 'islandora_scopus', 'includes/utilities');
  $to_render = array();
  if ($delta == 'islandora_scopus_badge') {
    $api_key = variable_get('islandora_scopus_api_key', '');
    if ($api_key) {
      $object = menu_get_object('islandora_object', 2);
      if ($object) {
        if (islandora_badges_show_for_cmodel($object)) {
          $doi = islandora_badges_get_doi($object);
          if ($doi) {
            $id = islandora_scopus_get_id('doi', $doi);
          }
          // TODO: Extend to allow PMID, etc.
          if (isset($id)) {
            $headers = array('Accept' => 'text/html', 'X-ELS-APIKey' => $api_key);
            $data = http_build_query(array(
              'scopus_id' => $id,
              'apiKey' => $api_key,
              'httpAccept' => 'text/html',
            ));
            $scopus_endpoint = variable_get('islandora_scopus_api_endpoint', 'https://api.elsevier.com/content/abstract/citation-count');
            $scopus_query = $scopus_endpoint . '?' . $data;
            $response = drupal_http_request($scopus_query, array('headers' => $headers));
            // Hit the API.
            if ($response->code == 200) {
              if (!preg_match('/alt=\"unavailable\"/', $response->data)) {
                $to_render['content']['islandora_scopus'] = array(
                  '#type' => 'container',
                  '#attributes' => array(
                    'class' => 'islandora_scopus_embed',
                  ),
                  '#children' => $response->data,
                );
              }
            }
          }
        }
      }
    }
  }
  return $to_render;
}