/**
* Rules action - grant points to a user
*/
function userpoints_action_grant_points($user,$settings){
    userpoints_userpointsapi(array('uid' => $user->uid, 
                                    'points' => $settings['points'],
                                    'operation' => $settings['operation'],
                                    'entity_type' => $settings['entity_type'],
                                    'tid' => $settings['points_category'],
                                    ));
}

/**
* Rules form configuration - allow number of points to be set by the rule
*/
function userpoints_action_grant_points_form($settings = array(), &$form) {

  $form['settings']['points'] = array(
    '#type' => 'textfield',
    '#title' => t('Number of points'),
    '#default_value' => isset($settings['points']) ? $settings['points'] : '',
    '#description' => t('The number of points to award')
  );
  $form['settings']['points_category'] = array(
    '#type'          => 'select',
    '#title'         => t('Category'),
    '#default_value' => isset($settings['points_category']) ? $settings['points_category'] : 0, 
    '#options'       => userpoints_get_categories(),
    '#description'   => t('Points will be assigned to this category. You can modify what categories are available by modifying the <a href="!url">Userpoints taxonomy</a>.', 
                           array('!url' => url('admin/content/taxonomy/'. variable_get(USERPOINTS_CATEGORY_DEFAULT_VID, '')))),
   );
  $form['settings']['operation'] = array(
    '#type' => 'textfield',
    '#title' => t('Operation'),
    '#default_value' => isset($settings['operation']) ? $settings['operation'] : '',
    '#description' => t('The operation, which the user will be displayed for transaction (eg. "node view")')
  );
  $form['settings']['entity_type'] = array(
    '#type' => 'textfield',
    '#title' => t('Entity Type'),
    '#default_value' => isset($settings['entity_type']) ? $settings['entity_type'] : '',
    '#description' => t('The entity_type, which will be stored on transaction level (eg. "node")')
  );
}