<?php

// $Id: content_taxonomy_facets.module,v 1.1.2.1 2008-05-19 09:14:05 mh86 Exp $

/**
 * @file
 * Exposes Content Taxonomy fields as facets.
 */

require_once('./'. drupal_get_path('module', 'cck_facets') .'/cck_facets.inc');


/**
 * Implementation of hook_cck_facets_collect().
 */
function content_taxonomy_facets_cck_facets_collect(&$facets, $field, $domain, $env_id, $arg = NULL) {
  if ($field['type'] == 'content_taxonomy') {
    switch ($domain) {
      case 'all':
        $facets[] = new cck_facet($field);
        break;

      case 'text':
        // Scan the given search text for a '{field_name}:{value}'
        // token, and create facets from it.
        if ($tid = search_query_extract($arg, $field['field_name'])) {
          if (is_numeric($tid)) {
            // Create an active facet with the value found in the search text.
            $category = new cck_facet_category($field, $tid);
            $facets[] = new cck_facet($field, array($category));
          }
          
          // Remove the parsed text
          $arg = search_query_insert($arg, $field['field_name']);
        }
        break;

      case 'node':
        if (isset($arg->{$field['field_name']}) && is_array($arg->{$field['field_name']})) {
          // Iterate through the field's multiple values.
          foreach ($arg->{$field['field_name']} as $item) {
            $value = array_shift($item);
            if (is_numeric($value)) {
              $category = new cck_facet_category($field, $value);
              $facets[] = new cck_facet($field, array($category));
            }
          }
        }
        break;
    }
  }
  return $arg;
}