<?php
// $Id: acl_node_test.module,v 1.1 2010-07-11 22:15:15 salvis Exp $

/**
 * @file
 * Dummy module implementing node related hooks to test API interaction with
 * the Node module.
 */

/**
 * Implements hook_node_grants().
 */
function acl_node_test_node_grants($account, $op) {
  // Give everyone full grants so we don't break other node tests.
  // Our node access tests asserts three realms of access.
  // See testGrantAlter().
  return array(
    'test_article_realm' => array(1),
    'test_page_realm' => array(1),
    'test_alter_realm' => array(2),
  );
}

/**
 * Implements hook_node_access_records().
 * Implicit View by All is allowed
 */
function acl_node_test_node_access_records($node) {
  $grants = array();
  if ($node->type == 'article') {
    // Create grant in arbitrary article_realm for article nodes.
    $grants[] = array(
      'realm' => 'test_article_realm',
      'gid' => 1,
      'grant_view' => 1,
      'grant_update' => 0,
      'grant_delete' => 0,
      'priority' => 0,
    );
  }
  elseif ($node->type == 'page') {
    // Create grant in arbitrary page_realm for page nodes.
    $grants[] = array(
      'realm' => 'test_page_realm',
      'gid' => 1,
      'grant_view' => 1,
      'grant_update' => 0,
      'grant_delete' => 0,
      'priority' => 0,
    );
  }
  return $grants;
}

/**
 * Implements hook_node_access_records_alter().
 */
function acl_node_test_node_access_records_alter(&$grants, $node) {
  if (!empty($grants)) {
    foreach ($grants as $key => $grant) {
      // Alter grant from test_page_realm to test_alter_realm and modify the gid.
      if ($grant['realm'] == 'test_page_realm' && $node->promote) {
        $grants[$key]['realm'] = 'test_alter_realm';
        $grants[$key]['gid'] = 2;
      }
    }
  }
}

/**
 * Implements hook_node_grants_alter().
 */
function acl_node_test_node_grants_alter(&$grants, $account, $op) {
  // Return an empty array of grants to prove that we can alter by reference.
  $grants = array();
}

/**
 * Implements hook_node_presave().
 */
function acl_node_test_node_presave($node) {
  if ($node->title == 'testing_node_presave') {
    // Sun, 19 Nov 1978 05:00:00 GMT
    $node->created = 280299600;
    // Drupal 1.0 release.
    $node->changed = 979534800;
  }
}

/**
 * Helper function to create a new ACL through this module
 */
function acl_node_acl_create_new_acl($name) {
  //should not be called acl_create_new_acl but acl_create_acl
  acl_create_new_acl('acl_node_test', $name);
}

/**
 * Helper function to delete an ACL through this module
 */
function acl_node_acl_delete_acl($acl_id) {
  acl_delete_acl($acl_id);
}

/**
 * Helper function to add an user
 */
function acl_node_acl_add_user($acl_id,$uid) {
  acl_add_user($acl_id,$uid);
}

/**
 * Helper function to remove an user
 */
function acl_node_acl_remove_user($acl_id,$uid) {
  acl_remove_user($acl_id,$uid);
}

/**
 * Helper function to get an ID of an ACL by it's name
*/
function acl_node_acl_get_id_by_name($acl_name) {
  return $acl_id = acl_get_id_by_name('acl_node_test', $acl_name);
}