<?php
// $Id: nodecomment_views.inc,v 1.2 2007-01-11 23:03:36 vauxia Exp $

/**
 * This include file implements views functionality on behalf of relationship.module
 */

function nodecomment_views_tables() {
  $tables['node_comments'] = array(
    'name' => 'node_comments',
    'provider' => 'internal',
    'join' => array(
      'left' => array(
        'table' => 'node',
        'field' => 'nid'
      ),
      'right' => array(
        'field' => 'cid'
      )
    ),
    'fields' => array(
      'nid' => array(
        'name' => t('Comment: Parent node'),
        'help' => t('Display the node the comment was posted in response to'),
      ),
      'name' => array(
        'name' => t('Comment: User name'),
        'help' => t('Display the name of the user who posted the comment'),
      ),
      'mail' => array(
        'name' => t('Comment: Email address'),
        'help' => t('Display the email address of the user who posted the comment'),
      ),
      'homepage' => array(
        'name' => t('Comment: Homepage'),
        'help' => t('Display the home page of the user who posted the comment'),
      ),
    ),
    'filters' => array(
      'nid' => array(
        'name' => t('Comment: Parent node'),
        'operator' => views_handler_operator_eqneq(),
        'help' => t('This allows you to filter based on the parent node.'),
      ),
    ),
  );

  $tables['node_comment_statistics'] = array(
    'name' => 'node_comment_statistics',
    'provider' => 'internal',
    'join' => array(
      'left' => array(
        'table' => 'node',
        'field' => 'nid'
      ),
      'right' => array(
        'field' => 'nid'
      ),
    ),
    'fields' => array(
      'last_comment_timestamp' => array(
        'name' => t('Comment: Last Comment Time'),
        'sortable' => true,
        'handler' => views_handler_field_dates(),
        'option' => 'string',
        'help' => t('This will display the last comment time.'),
       ),
      'last_comment_name' => array(
        'name' => t('Comment: Last Comment Author'),
        'query_handler' => 'views_query_handler_field_last_comment_name',
        'handler' => 'views_handler_field_last_comment_name',
        'sortable' => true,
        'uid' => 'last_comment_uid',
        'addlfields' => array('last_comment_name', 'last_comment_uid'),
        'help' => t('This will display the name of the last user to comment on the post.'),
      ),
      'comment_count' => array(
        'name' => t('Comment: Count'),
        'sortable' => true,
        'handler' => array(
          'views_handler_field_int'         => t('Normal'),
          'views_handler_comments_with_new' => t('With New Count')
        ),
        'help' => t('This will display the comment count.'),
      ),
    ),
    'filters' => array(
      'comment_count' => array(
        'name' => t('Comment: Comment Count'),
        'operator' => 'views_handler_operator_gtlt',
        'option' => 'integer',
        'help' => t('This filter allows you to filter by the amount of comments.'),
      ),
      'last_comment_timestamp' => array(
        'name' => t('Comment: Last Comment Time'),
        'operator' => 'views_handler_operator_gtlt',
        'value' => views_handler_filter_date_value_form(),
        'handler' => 'views_handler_filter_timestamp',
        'option' => 'string',
        'help' => t('This filter allows nodes to be filtered by the last comment timestamp. Enter dates in the format: CCYY-MM-DD HH:MM:SS. Enter \'now\' to use the current time. You may enter a delta (in seconds) to the option that will be added to the time; this is most useful when combined with now. If you have the jscalendar module from jstools installed, you can use a popup date picker here.'),
      ),
    ),
    'sorts' => array(
      'last_comment_timestamp' => array(
        'name' => t('Comment: Last Comment Date'),
        'handler' => 'views_handler_sort_date',
        'option' => views_handler_sort_date_options(),
        'help' => t('This will allow you to sort by the date of the most recent comment on a node.')
      ),
      'comment_count' => array(
        'name' => t('Comment: Comment Count'),
        'help' => t('This filter allows you to sort by the number of comments.'),
      ),
    ),
  );

  return $tables;
}

function nodecomment_views_arguments() {
  $arguments = array(
    'nid' => array(
      'name' => t("Comment: Parent node ID"),
      'handler' => "views_handler_arg_comment_target_nid",
    ),
  );
  return $arguments;
}

function nodecomment_views_default_views() {
  $view = new stdClass();
  $view->name = 'node_comments';
  $view->description = 'node comments';
  $view->access = array ();
  $view->view_args_php = '';
  $view->sort = array (
    array (
      'tablename' => 'node',
      'field' => 'created',
      'sortorder' => 'ASC',
      'options' => 'normal',
    ),
  );
  $view->argument = array (
    array (
      'type' => 'nid',
      'argdefault' => '1',
      'title' => '',
      'options' => '',
      'wildcard' => '',
      'wildcard_substitution' => '',
    ),
  );
  $view->field = array (
  );
  $view->filter = array (
    array (
      'tablename' => 'node',
      'field' => 'status',
      'operator' => '=',
      'options' => '',
      'value' => '1',
    ),
    array (
      'tablename' => 'node',
      'field' => 'moderate',
      'operator' => '=',
      'options' => '',
      'value' => '0',
    ),
  );
  $view->exposed_filter = array();
  $view->requires = array('node');
  $view->page_type = 'teaser';
  $views[$view->name] = $view;
  return $views;
}

function views_handler_arg_comment_target_nid($op, &$query, $argtype, $arg = '') {
  switch ($op)
  {
    case 'summary' :
      // Not supported at present
      break;
    case 'sort':
      // Not supported at present
      break;
    case 'filter' :
      $query->ensure_table("node_comments");
      $query->add_where("node_comments.nid = %d", $arg);
      break;
    case 'link' :
      // Not supported at present
      break;
    case 'title' :
      if ($query)
      {
        $n = db_fetch_object(db_query("SELECT title FROM {node} WHERE nid = %d", $query));
        return $n->title;
      }
  }
}


// This code is copied shamelessly from views module's views_comment.inc.
// Since comment.module isn't enabled, we lose this functionality. But we
// do, indeed, want it for building forum views and so on.

function views_query_handler_field_last_comment_name($field, $fieldinfo, &$query) {
  $num = $query->add_table('users', false, 1, array(
    'left' => array(
      'table' => $field['tablename'],
      'field' => 'last_comment_uid'
    ),
    'right' => array(
      'field' => 'uid'
    ),
  ));
  $query->add_field('name', $query->get_table_name('users', $num), $field['tablename'] . '_name');
}

function views_handler_field_last_comment_name($fieldinfo, $fielddata, $value, $data) {
  $obj->name = $value;
  $uidfield = $fielddata['tablename'] . "_"  . $fieldinfo['uid'];
  $obj->uid = $data->$uidfield;
  if ($obj->uid != 0) {
    $fieldname = $fielddata['tablename'] . '_name';
    $obj->name = $data->$fieldname;
  }
  return theme('username', $obj);
}

/*
 * Format a field as a link to a comment.
 */
function views_handler_field_commentlink($fieldinfo, $fielddata, $value, $data) {
  if ($fielddata['options'] == 'nolink') {
    return check_plain($value);
  }
  return l($value, "node/$data->nid", NULL, NULL, "comment-$data->comments_cid");
}

/*
 * Format a field as a number of comments, plus the number of unread comments.
 */
function views_handler_comments_with_new($fieldinfo, $fielddata, $value, $data) {
  $comments = intval($value);
  if ($comments && $new = nodecomment_num_new($data->nid)) {
    $comments .= '<br />';
    $comments .= l(t('@num new', array('@num' => $new)), "node/$data->nid", NULL, comment_page_new_query($data->nid), 'new');
  }
  return $comments;
}

/*
 * Format a field as a link to a 'mark', stating whether or not the comment has
 * updated since it was last viewed by the user.
 */
function views_handler_field_commentlink_with_mark($fieldinfo, $fielddata, $value, $data) {
  if ($fielddata['options'] == 'nolink') {
    $link = check_plain($value);
  }
  else {
    $link = l($value, "node/$data->nid", NULL, NULL, "comment-$data->comments_cid");
  }
  return $link .' '. theme('mark', node_mark($data->nid, $data->comments_timestamp));
}