/**
 * Implementation of hook_pathauto() for user-contact aliases
 */
function contact_pathauto($op) {
  switch ($op) {
    case 'settings':
	  $settings = array();
	  $settings['module'] = 'contact';
	  $settings['groupheader'] = t('User-contact path settings');
	  $settings['patterndesc'] = t('Pattern for user-contact form paths');
	  $settings['patterndefault'] = t('user/[user]/contact');
	  $settings['placeholders'] = array(
	    t('[user]') => t('The name of the user.'),
		t('[uid]') => t('The id number of the user.')
	  );
	  $settings['bulkname'] = t('Bulk update user-contact form paths');
	  $settings['bulkdescr'] = t('Generate aliases for all existing user-contact forms which do not already have aliases.');
      return (object) $settings;
    default:
	  break;
  }
}

/**
 * Bulk generate aliases for user contacts without aliases 
 */
function contact_pathauto_bulkupdate() {
  $query = "SELECT uid, name, src, dst FROM {users} LEFT JOIN {url_alias} ON CONCAT('user/', uid,'/contact') = src WHERE uid > 0 AND src IS NULL";
  $result = db_query_range($query, 0, variable_get('pathauto_max_bulk_update', 50));
  
  $count = 0;
  $placeholders = array();
  while ($user = db_fetch_object($result)) {
    $placeholders = pathauto_get_placeholders('user', $user);
	$src = 'user/'.$user->uid.'/contact';
	if ($alias = pathauto_create_alias('contact', 'bulkupdate', $placeholders, $src)) {
	  $count++;
	}
  }
  
  drupal_set_message(format_plural($count,
    "Bulk update of user-contact forms completed, one alias generated.",
	"Bulk update of user-contact forms completed, @count aliases generated."));
}