<?php
// $Id: cck_field_indexer.module,v 1.2 2008-05-26 21:02:49 davidlesieur Exp $

/**
 * @file
 * Exposes CCK fields for indexing into the search index.
 */

/**
 * Implementation of hook_field_indexer_list().
 *
 * Retrieve all fields provided by CCK.
 *
 * @return
 *   An array describing the fields, each field being represented by an array
 *   with the following attributes:
 *   - name: Machine name or id of the field.
 *   - extra_name: Extra field name or id information.
 *   - label: Printable name of the field.
 *   - help: Optional info that may help in identifying the field.
 */
function cck_field_indexer_field_indexer_list() {
  $cck_fields = content_fields();
  $fields = array();
  foreach ($cck_fields as $field) {
    $fields[] = array(
      'namespace' => 'cck',
      'name' => $field['field_name'],
      'extra_name' => '',
      'label' => $field['widget']['label'],
      'help' => $field['field_name'],
    );
  }
  return $fields;
}

/**
 * Implementation of hook_nodeapi().
 *
 * This is used to add our own entries to the search index. Using nodeapi's
 * update index operation is convenient, since the node module already handles
 * the logic for determining which nodes need indexing.
 */
function cck_field_indexer_nodeapi(&$node, $op, $a3 = NULL, $a4 = NULL) {
  static $fields = NULL;
  if ($op == 'update index') {
    if (!isset($fields)) {
      $fields = field_indexer_load_fields(TRUE, 'cck');
    }
    $type = content_types($node->type);
    foreach ($fields as $field) {
      if (isset($type['fields'][$field['name']]) && isset($node->{$field['name']})) {
        $value = '';
        foreach ($node->{$field['name']} as $item) {
          $value .= ' '. content_format($type['fields'][$field['name']], $item, 'default', $node);
        }
        if (trim($value) != '') {
          field_indexer_index($node->nid, $field['fiid'], $value);
        }
      }
    }
  }
}