<?php
// $Id$
/**
 * @file
 * Provide views data and handlers for comment.module
 */

/**
 * @defgroup views_comment_module comment.module handlers
 *
 * Includes the tables 'comments' and 'node_comment_statistics'
 * @{
 */

/**
 * Implementation of hook_views_data()
 */

function comment_views_data() {
  // Define the base group of this table. Fields that don't
  // have a group defined will go into this field by default.
  $data['comments']['table']['group']  = t('Comment');

  $data['comments']['table']['base'] = array(
    'field' => 'cid',
    'title' => t('Comment'),
    'help' => t("Comments are responses to node content."),
  );

  //joins
  $data['comments']['table']['join'] = array(
    //...to the node table
    'node' => array(
      'left_field' => 'nid',
      'field' => 'nid',
    ),
  );

  // ----------------------------------------------------------------
  // Fields

  // subject
  $data['comments']['subject'] = array(
    'title' => t('Title'),
    'help' => t('The title of the comment.'),
    'field' => array(
      'handler' => 'views_handler_field_comment',
      'click sortable' => TRUE,
    ),
    'filter' => array(
      'handler' => 'views_handler_filter_string',
    ),
    'sort' => array(
      'handler' => 'views_handler_sort',
    ),
    'argument' => array(
      'handler' => 'views_handler_argument_string',
    ),
  );

  // comment (the comment body)
  $data['comments']['comment'] = array(
    'title' => t('Body'),
    'help' => t('The text of the comment.'),
    'field' => array(
      'handler' => 'views_handler_field_markup',
      'format' => 'format',
    ),
    'filter' => array(
      'handler' => 'views_handler_filter_string',
    ),
  );

  // cid
  $data['comments']['cid'] = array(
    'title' => t('ID'),
    'help' => t('The comment ID of the field'),
    'field' => array(
      'handler' => 'views_handler_field_comment',
      'click sortable' => TRUE,
    ),
    'filter' => array(
      'handler' => 'views_handler_filter_numeric',
    ),
    'sort' => array(
      'handler' => 'views_handler_sort',
    ),
    'argument' => array(
      'handler' => 'views_handler_argument',
    ),
  );

  // name (of comment author)
  $data['comments']['name'] = array(
    'title' => t('Author'),
    'help' => t("The name of the comment's author. Can be rendered as a link to the author's homepage."),
    'field' => array(
      'handler' => 'views_handler_field_comment_username',
      'click sortable' => TRUE,
    ),
    'filter' => array(
      'handler' => 'views_handler_filter_string',
    ),
    'sort' => array(
      'handler' => 'views_handler_sort',
    ),
    'argument' => array(
      'handler' => 'views_handler_argument_string',
    ),
  );

  // homepage
  $data['comments']['homepage'] = array(
    'title' => t("Author's website"),
    'help' => t("The website address of the comment's author. Can be rendered as a link. Will be empty if the author is a registered user."),
    'field' => array(
      'handler' => 'views_handler_field_url',
      'click sortable' => TRUE,
    ),
    'filter' => array(
      'handler' => 'views_handler_filter_string',
    ),
    'sort' => array(
      'handler' => 'views_handler_sort',
    ),
    'argument' => array(
      'handler' => 'views_handler_argument_string',
    ),
  );

  // timestamp (when comment was posted)
  $data['comments']['timestamp'] = array(
    'title' => t('Post date'),
    'help' => t('Date and time of when the comment was posted.'),
    'field' => array(
      'handler' => 'views_handler_field_date',
      'click sortable' => TRUE,
    ),
    'sort' => array(
      'handler' => 'views_handler_sort_date',
    ),
    'filter' => array(
      'handler' => 'views_handler_filter_date',
    ),
  );

  // status (approved or not)
  $data['comments']['status'] = array(
    'title' => t('In moderation'),
    'help' => t('Whether or not the comment is currently in moderation.'),
    'field' => array(
      'handler' => 'views_handler_field_boolean',
      'click sortable' => TRUE,
    ),
    'filter' => array(
      'handler' => 'views_handler_filter_boolean_operator',
      'label' => t('Moderated'),
      'type' => 'yes-no',
    ),
    'sort' => array(
      'handler' => 'views_handler_sort',
    ),
  );

  // link to view comment
  $data['comments']['view_comment'] = array(
    'field' => array(
      'title' => t('View link'),
      'help' => t('Provide a simple link to view the comment.'),
      'handler' => 'views_handler_field_comment_link',
    ),
  );

  // link to edit comment
  $data['comments']['edit_comment'] = array(
    'field' => array(
      'title' => t('Edit link'),
      'help' => t('Provide a simple link to edit the comment.'),
      'handler' => 'views_handler_field_comment_link_edit',
    ),
  );

  // link to delete comment
  $data['comments']['delete_comment'] = array(
    'field' => array(
      'title' => t('Delete link'),
      'help' => t('Provide a simple link to delete the comment.'),
      'handler' => 'views_handler_field_comment_link_delete',
    ),
  );

  // link to reply to comment
  $data['comments']['replyto_comment'] = array(
    'field' => array(
      'title' => t('Reply-to link'),
      'help' => t('Provide a simple link to reply to the comment.'),
      'handler' => 'views_handler_field_comment_link_reply',
    ),
  );

  $data['comments']['node_link'] = array(
    'field' => array(
      'title' => t('Node link'),
      'help' => t('Display the standard comment link used on regular nodes.'),
      'handler' => 'views_handler_field_comment_node_link',
    ),
  );  

  $data['comments']['thread'] = array(
    'field' => array(
      'title' => t('Depth'),
      'help' => t('Display the depth of the comment if it is threaded.'),
      'handler' => 'views_handler_field_comment_depth',
    ),
    'sort' => array(
      'title' => t('Thread'),
      'help' => t('Sort by the threaded order. This will keep child comments together with their parents.'),
      'handler' => 'views_handler_sort_comment_thread',
    ),
  );

  $data['comments']['nid'] = array(
    'title' => t('Node'),
    'help' => t('The node the comment is a reply to.'),
    'relationship' => array(
      'base' => 'node',
      'field' => 'nid',
      'handler' => 'views_handler_relationship',
      'label' => t('Node'),
    ),
  );

  $data['comments']['uid'] = array(
    'title' => t('User'),
    'help' => t("The User ID of the comment's author."),
    'relationship' => array(
      'base' => 'users',
      'field' => 'uid',
      'handler' => 'views_handler_relationship',
      'label' => t('User'),
    ),
  );

  $data['comments']['pid'] = array(
    'title' => t('Parent CID'),
    'help' => t('The Comment ID of the parent comment.'),
    'field' => array(
      'handler' => 'views_handler_field',
    ),
    'relationship' => array(
      'title' => t('Parent comment'),
      'help' => t('The parent comment.'),
      'base' => 'comments',
      'field' => 'cid',
      'handler' => 'views_handler_relationship',
      'label' => t('Parent comment'),
    ),
  );

  // ----------------------------------------------------------------------
  // node_comment_statistics table

  // define the group
  $data['node_comment_statistics']['table']['group']  = t('Node');

  // joins
  $data['node_comment_statistics']['table']['join'] = array(
    //...to the node table
    'node' => array(
      'type' => 'INNER',      
      'left_field' => 'nid',
      'field' => 'nid',
     ),
  );

  // last_comment_timestamp
  $data['node_comment_statistics']['last_comment_timestamp'] = array(
    'title' => t('Last comment time'),
    'help' => t('Date and time of when the last comment was posted.'),
    'field' => array(
      'handler' => 'views_handler_field_date',
      'click sortable' => TRUE,
    ),
    'sort' => array(
      'handler' => 'views_handler_sort_date',
    ),
    'filter' => array(
      'handler' => 'views_handler_filter_date',
    ),
  );

  // last_comment_name (author's name)
  $data['node_comment_statistics']['last_comment_name'] = array(
    'title' => t("Last comment author"),
    'help' => t('The name of the author of the last posted comment.'),
    'field' => array(
      'handler' => 'views_handler_field_ncs_last_comment_name',
      'click sortable' => TRUE,
    ),
    'sort' => array(
      'handler' => 'views_handler_sort_ncs_last_comment_name',
    ),
  );

  // comment_count
  $data['node_comment_statistics']['comment_count'] = array(
    'title' => t('Comment count'),
    'help' => t('The number of comments a node has.'),
    'field' => array(
      'handler' => 'views_handler_field_numeric',
      'click sortable' => TRUE,
    ),
    'filter' => array(
      'handler' => 'views_handler_filter_numeric',
    ),
    'sort' => array(
      'handler' => 'views_handler_sort',
    ),
    'argument' => array(
      'handler' => 'views_handler_argument',
    ),
  );

  // last_comment_timestamp
  $data['node_comment_statistics']['last_updated'] = array(
    'title' => t('Updated/commented date'),
    'help' => t('The most recent of last comment posted or node updated time.'),
    'field' => array(
      'handler' => 'views_handler_field_ncs_last_updated',
      'click sortable' => TRUE,
    ),
    'sort' => array(
      'handler' => 'views_handler_sort_ncs_last_updated',
    ),
    'filter' => array(
      'handler' => 'views_handler_filter_ncs_last_updated',
    ),
  );

  return $data;
}

/**
 * Use views_data_alter to add items to the node table that are
 * relevant to comments.
 */
function comment_views_data_alter(&$data) {
  // new comments
  $data['node']['new_comments'] = array(
    'title' => t('New comments'),
    'help' => t('The number of new comments on the node.'),
    'field' => array(
      'handler' => 'views_handler_field_node_new_comments',
    ),
  );

  // Comment status of the node
  $data['node']['comment'] = array(
    'title' => t('Comment status'),
    'help' => t('Whether comments are enabled or disabled on the node.'),
    'field' => array(
      'handler' => 'views_handler_field_node_comment',
      'click sortable' => TRUE,
    ),
    'sort' => array(
      'handler' => 'views_handler_sort',
    ),
    'filter' => array(
      'handler' => 'views_handler_filter_node_comment',
    ),
  );

  $data['node']['uid_touch'] = array(
    'title' => t('User posted or commented'),
    'help' => t('Display nodes only if a user posted the node or commented on the node.'),
    'argument' => array(
      'field' => 'uid',
      'name table' => 'users',
      'name field' => 'name',
      'handler' => 'views_handler_argument_comment_user_uid',
    ),
    'filter' => array(
      'field' => 'uid',
      'name table' => 'users',
      'name field' => 'name',
      'handler' => 'views_handler_filter_comment_user_uid'
    ),
  );

}

/**
 * Implementation of hook_views_plugins
 */
function comment_views_plugins() {
  return array(
    'module' => 'views', // This just tells views our themes are in Views.
    'row' => array(
      'comment' => array(
        'title' => t('Comment'),
        'help' => t('Display the comment with standard comment view.'),
        'handler' => 'views_plugin_row_comment_view',
        'path' => drupal_get_path('module', 'views') . '/modules/comment', // not necessary for most modules
        'theme' => 'views_view_row_comment',
        'base' => array('comments'), // only works with 'comment' as base.
        'uses options' => TRUE,
        'type' => 'normal',
        'help topic' => 'style-comment',
      ),
      'comment_rss' => array(
        'title' => t('Comment'),
        'help' => t('Display the comment as RSS.'),
        'handler' => 'views_plugin_row_comment_rss',
        'path' => drupal_get_path('module', 'views') . '/modules/comment', // not necessary for most modules
        'theme' => 'views_view_row_rss',
        'base' => array('comments'), // only works with 'comment' as base.
        'type' => 'feed',
        'help topic' => 'style-comment-rss',
      ),
    ),
  );
}

/**
 * Implementation of hook_views_handlers() to register all of the basic handlers
 * views uses.
 */
function comment_views_handlers() {
  return array(
    'info' => array(
      'path' => drupal_get_path('module', 'views') . '/modules/comment',
    ),
    'handlers' => array(
      'views_handler_field_comment' => array(
        'parent' => 'views_handler_field',
      ),
      'views_handler_field_comment_username' => array(
        'parent' => 'views_handler_field',
      ),
      'views_handler_field_comment_depth' => array(
        'parent' => 'views_handler_field',
      ),
      'views_handler_field_comment_link' => array(
        'parent' => 'views_handler_field',
      ),
      'views_handler_field_comment_link_edit' => array(
        'parent' => 'views_handler_field_comment_link',
      ),
      'views_handler_field_comment_link_delete' => array(
        'parent' => 'views_handler_field_comment_link',
      ),
      'views_handler_field_comment_link_reply' => array(
        'parent' => 'views_handler_field_comment_link',
      ),
      'views_handler_field_comment_node_link' => array(
       'parent' => 'views_handler_field',
      ),
      'views_handler_field_ncs_last_comment_name' => array(
        'parent' => 'views_handler_field',
      ),
      'views_handler_field_ncs_last_updated' => array(
        'parent' => 'views_handler_field_date',
      ),
      'views_handler_field_node_new_comments' => array(
        'parent' => 'views_handler_field_numeric',
      ),
      'views_handler_field_node_comment' => array(
        'parent' => 'views_handler_field',
      ),

      // sort handlers
      'views_handler_sort_comment_thread' => array(
        'parent' => 'views_handler_sort',
      ),
      'views_handler_sort_ncs_last_comment_name' => array(
        'parent' => 'views_handler_sort',
      ),
      'views_handler_sort_ncs_last_updated' => array(
        'parent' => 'views_handler_sort_date',
      ),

      // filter handlers
      'views_handler_filter_ncs_last_updated' => array(
        'parent' => 'views_handler_filter_date',
      ),
      'views_handler_filter_node_comment' => array(
        'parent' => 'views_handler_filter_in_operator',
      ),
      'views_handler_filter_comment_user_uid' => array(
        'parent' => 'views_handler_filter_user_name',
      ),

      // argument handlers
      'views_handler_argument_comment_user_uid' => array(
        'parent' => 'views_handler_argument',
      ),
    ),
  );
}

/**
 * Template helper for theme_views_view_row_comment
 */
function template_preprocess_views_view_row_comment(&$vars) {
  $options = $vars['options'];
  $view = &$vars['view'];
  $plugin = &$view->style_plugin->row_plugin;
  $comment = $plugin->comments[$vars['row']->cid];
  $node = node_load($comment->nid);
  // Put the view on the node so we can retrieve it in the preprocess.
  $node->view = &$view;

  $links = '';
  if (!empty($options['links'])) {
    $links = module_invoke_all('link', 'comment', $comment, 0);
    drupal_alter('link', $links, $node);
  }

  $vars['comment'] = theme('comment_view', $comment, $node, $links);
}

/**
 * @}
 */