<?php

/**
 * Implements hook_metatag_config_default().
 */
function metatag_metatag_config_default() {
  $configs = array();

  $config = new stdClass();
  $config->instance = 'global';
  $config->api_version = 1;
  $config->disabled = FALSE;
  $config->config = array(
    'title' => array('value' => '[current-page:title] | [site:name]'),
    'generator' => array('value' => 'Drupal 7 (http://drupal.org)'),
    'canonical' => array('value' => '[current-page:url:absolute]'),
    'shortlink' => array('value' => '[current-page:url:unaliased]'),
  );
  $configs[$config->instance] = $config;

  $config = new stdClass();
  $config->instance = 'global:frontpage';
  $config->api_version = 1;
  $config->disabled = FALSE;
  $config->config = array(
    'title' => array('value' => variable_get('site_slogan') ? '[site:name] | [site:slogan]' : '[site:name]'),
    'canonical' => array('value' => '[site:url]'),
    'shortlink' => array('value' => '[site:url]'),
  );
  $configs[$config->instance] = $config;

  $config = new stdClass();
  $config->instance = 'node';
  $config->api_version = 1;
  $config->disabled = FALSE;
  $config->config = array(
    'title' => array('value' => '[node:title] | [site:name]'),
    'description' => array('value' => '[node:summary]'),
  );
  $configs[$config->instance] = $config;

  if (module_exists('taxonomy')) {
    $config = new stdClass();
    $config->instance = 'taxonomy_term';
    $config->api_version = 1;
    $config->disabled = FALSE;
    $config->config = array(
      'title' => array('value' => '[term:name] | [site:name]'),
      'description' => array('value' => '[term:description]'),
    );
    $configs[$config->instance] = $config;
  }

  $config = new stdClass();
  $config->instance = 'user';
  $config->api_version = 1;
  $config->disabled = FALSE;
  $config->config = array(
    'title' => array('value' => '[user:name] | [site:name]'),
  );
  $configs[$config->instance] = $config;

  return $configs;
}

/**
 * Implements hook_metatag_config_instance_info().
 */
function metatag_metatag_config_instance_info() {
  $info['global']           = array('label' => t('Global'));
  $info['global:frontpage'] = array('label' => t('Front page'));
  // @todo The 403 and 404 meta tag contexts are disabled until they can be properly implemented.
  //$info['global:403']       = array('label' => t('403 page not found'));
  //$info['global:404']       = array('label' => t('404 page not found'));

  // Add instance information for entities.
  $entity_types = entity_get_info();
  foreach ($entity_types as $entity_type => $entity_info) {
    if (metatag_entity_supports_metatags($entity_type)) {
      $info[$entity_type] = array('label' => $entity_info['label']);
      foreach ($entity_info['bundles'] as $bundle => $bundle_info) {
        if (count($entity_info['bundles'] == 1) && $bundle == $entity_type) {
          // Skip default bundles (entities that do not really have bundles).
          continue;
        }
        if (metatag_entity_supports_metatags($entity_type, $bundle)) {
          $info[$entity_type . ':' . $bundle] = array('label' => $bundle_info['label']);
        }
      }
    }
  }

  return $info;
}

/**
 * Implements hook_metatag_info().
 */
function metatag_metatag_info() {
  $info['groups']['advanced'] = array(
    'label' => t('Advanced'),
    'form' => array(
      '#weight' => 100,
    ),
  );

  $info['tags']['title'] = array(
    'label' => t('Page title'),
    'description' => t("The text to display in the title bar of a visitor's web browser when they view this page. This meta tag may also be used as the title of the page when a visitor bookmarks or favorites this page."),
    'class' => 'DrupalTitleMetaTag',
  );

  $info['tags']['description'] = array(
    'label' => t('Description'),
    'description' => t("A brief and concise summary of the page's content, preferably 150 characters or less. The description meta tag may be used by search engines to display a snippet about the page in search results."),
    'class' => 'DrupalTextMetaTag',
    'form' => array(
      '#type' => 'textarea',
      '#rows' => 2,
      '#wysiwyg' => FALSE,
    ),
  );

  $info['tags']['abstract'] = array(
    'label' => t('Abstract'),
    'description' => t("A brief and concise summary of the page's content, preferably 150 characters or less. The abstract meta tag may be used by search engines for archiving purposes."),
    'class' => 'DrupalTextMetaTag',
    'form' => array(
      '#type' => 'textarea',
      '#rows' => 2,
      '#wysiwyg' => FALSE,
    ),
  );

  $info['tags']['keywords'] = array(
    'label' => t('Keywords'),
    'description' => t("A comma-separated list of keywords about the page. This meta tag is <em>not</em> used by most search engines."),
    'class' => 'DrupalTextMetaTag',
  );

  // More advanced meta tags.
  $info['tags']['robots'] = array(
    'label' => t('Robots'),
    'description' => t("Provides search engines with specific directions for what to do when this page is indexed."),
    'class' => 'DrupalListMetaTag',
    'form' => array(
      '#options' => array(
        'index' => t('Allow search engines to index this page (assumed).'),
        'follow' => t('Allow search engines to follow links on this page (assumed).'),
        'noindex' => t('Prevent search engines from indexing this page.'),
        'nofollow' => t('Prevent search engines from following links on this page.'),
        'noarchive' => t('Prevent a cached copy of this page from being available in the search results.'),
        'nosnippet' => t('Prevents a description from appearing below the page in the search results, as well as prevents caching of the page.'),
        'noodp' => t('Blocks the <a href="@odp-url">Open Directory Project</a> description of the page from being used in the description that appears below the page in the search results.', array('@odp-url' => 'http://www.dmoz.org/')),
        'noydir' => t('Prevents Yahoo! from listing this page in the <a href="@ydir">Yahoo! Directory</a>.', array('@ydir' => 'http://dir.yahoo.com/')),
      ),
    ),
    'group' => 'advanced',
  );

  $info['tags']['news_keywords'] = array(
    'label' => t('Google News Keywords'),
    'description' => t('A comma-separated list of keywords about the page. This meta tag is used as an indicator in <a href="@google_news">Google News</a>.', array('@google_news' => 'http://support.google.com/news/publisher/bin/answer.py?hl=en&answer=68297')),
    'class' => 'DrupalTextMetaTag',
    'group' => 'advanced',
  );

  $info['tags']['generator'] = array(
    'label' => t('Generator'),
    'description' => t("Describes the name and version number of the software or publishing tool used to create the page."),
    'class' => 'DrupalTextMetaTag',
    'header' => 'X-Generator',
    'context' => array('global'),
    'group' => 'advanced',
  );

  $info['tags']['copyright'] = array(
    'label' => t('Copyright'),
    'description' => t("Details a copyright, trademark, patent, or other information that pertains to intellectual property about this page. Note that this will not automatically protect your site's content or your intellectual property."),
    'class' => 'DrupalTextMetaTag',
    'group' => 'advanced',
  );

  $info['tags']['image_src'] = array(
    'label' => t('Image'),
    'description' => t("An image associated with this page, for use as a thumbnail in social networks and other services."),
    'class' => 'DrupalLinkMetaTag',
    'group' => 'advanced',
  );

  $info['tags']['canonical'] = array(
    'label' => t('Canonical URL'),
    'description' => t("Tells search engines where the preferred location or URL is for this page to help eliminate self-created duplicate content for search engines."),
    'class' => 'DrupalLinkMetaTag',
    'group' => 'advanced',
  );

  $info['tags']['shortlink'] = array(
    'label' => t('Shortlink URL'),
    'description' => '',
    'class' => 'DrupalLinkMetaTag',
    'group' => 'advanced',
  );

  $info['tags']['publisher'] = array(
    'label' => t('Publisher URL'),
    'description' => '',
    'class' => 'DrupalLinkMetaTag',
    'group' => 'advanced',
  );

  $info['tags']['author'] = array(
    'label' => t('Author URL'),
    'description' => "Used by some search engines to confirm authorship of the content on a page. Should be either the full URL for the author's Google+ profile page or a local page with information about the author.",
    'class' => 'DrupalLinkMetaTag',
    'group' => 'advanced',
  );

  $info['tags']['original-source'] = array(
    'label' => t('Original Source'),
    'description' => '',
    'class' => 'DrupalTextMetaTag',
    'group' => 'advanced',
    'description' => "Used to indicate the URL that broke the story, and can link to either an internal URL or an external source. If the full URL is not known it is acceptable to use a partial URL or just the domain name.",
  );

  return $info;
}