<?php
// $Id: userpoints_rules.module,v 1.1.4.2 2010-10-30 08:27:57 berdir Exp $

/**
 * @file
 * Rules integration for the user points module.
 */

/**
 * Rules events -Trigger event when user points awarded.
 */
function userpoints_rules_userpoints($op, &$params = array()) {
  // Transactions without points are not passed to rules for now.
  if (!is_array($params) || !isset($params['points'])) {
   return;
  }

  $event = '';
  switch ($op) {
    case 'points after':
        $event = 'userpoints_event_points_awarded_after';
        break;

    case 'points before':
        $event = 'userpoints_event_points_awarded_before';
        break;
  }

  if (!empty($event)) {
    // Convert to an object.
    $userpoints_transaction = (object) $params;

    // Provide uid as wrapped user entity.
    $userpoints_transaction->user = entity_metadata_wrapper('user', $userpoints_transaction->uid);

    $userpoints_transaction->entity = NULL;
    if (!empty($userpoints_transaction->entity_type) && !empty($userpoints_transaction->entity_id)) {
      // Make entity available as lazy loading wrapper.
      $userpoints_transaction->entity = entity_metadata_wrapper($userpoints_transaction->entity_type, $userpoints_transaction->entity_id);
    }
    // Invoke rules event.
    rules_invoke_event($event, $userpoints_transaction);
    // Convert back to keep any changes to the properties.
    $params = (array)$userpoints_transaction;

    $params['uid'] = $userpoints_transaction->user->getIdentifier();
    unset($params['user']);

    if ($userpoints_transaction->entity) {
      $params['entity_type'] = $userpoints_transaction->entity->type();
      try {
        $params['entity_id'] = $userpoints_transaction->entity->getIdentifier();
      } catch (Exception $e) {
        throw $e;
      }
    }
    unset($params['entity']);
  }
}