<?php
// $Id: autoassignrole.module,v 1.22 2010-11-14 21:25:32 cyberswat Exp $

/**
 * @file
 *
 * The main autoassignrole.module file
 *
 * Designate a role to assign all new users to in addition to providing a
 * mechanism for new users to select a role or role for their account.
 */

/**
 * Implements hook_permission().
 */
function autoassignrole_permission() {
  return array(
    'administer autoassignrole' =>  array(
      'title' => t('Administer auto assign role'),
      'description' => t('Perform administration tasks for auto assign role.'),
    ),
  );
}

/**
 * Implements hook_menu().
 *
 * @return array
 */
function autoassignrole_menu() {
  $items = array();
  $items['admin/config/autoassignrole'] = array(
    'title' => 'Auto assign role',
    'description' => 'Configure auto role assignment.',
    'access arguments' => array('administer autoassignrole'),
    'page callback' => 'autoassignrole_admin_block_page',
    'file' => 'autoassignrole.admin.inc',
  );
  $items['admin/config/autoassignrole/auto'] = array(
    'title' => 'Auto role assignment',
    'description' => 'Configure which role(s) are automatically assigned on user creation.',
    'access arguments' => array('administer autoassignrole'),
    'page callback' => 'drupal_get_form',
    'page arguments' => array('autoassignrole_auto_settings'),
    'file' => 'autoassignrole.admin.inc',
  );
  $items['admin/config/autoassignrole/user'] = array(
    'title' => 'Allow user to choose',
    'description' => 'Configure the ability for an end user to choose their own roles.',
    'access arguments' => array('administer autoassignrole'),
    'page callback' => 'drupal_get_form',
    'page arguments' => array('autoassignrole_user_settings'),
    'file' => 'autoassignrole.admin.inc',
  );

  return $items;
}

/**
 * Implements hook_user_presave().
 */
function autoassignrole_user_presave(&$edit, $account, $category) {
  // Use case http://drupal.org/node/971622
  // Make sure we only assign roles automatically when enabled to do so.
  if (variable_get('autoassignrole_auto_active', 0)) {

    // Use case http://drupal.org/node/944864
    // Only assign roles if this is a new account.
    if (isset ($account->is_new) && !empty($account->is_new)) {
      // Get the existing user roles with the exception of the anonymous role.
      $user_roles = user_roles(TRUE);
      $auto_roles = variable_get('autoassignrole_auto_roles', array());
      // Add autoassignrole_auto_roles to the $edit['roles'] array if they are
      // valid.
      foreach ($auto_roles as $rid) {
        // Dealing with checkbox values so anything greater than zero is valid
        if (!empty($rid) && array_key_exists($rid, $user_roles)) {
          $edit['roles'][$rid] = $user_roles[$rid];
        }
      }
    }
  }
}