<?php

/**
 * @file
 * Update functions for Nice menus.
 */

/**
 * Implements hook_uninstall().
 */
function nice_menus_uninstall() {
  // Remove all the configuration variables added by the module.
  db_delete('variable')
    ->condition('name', 'nice_menus_%', 'LIKE')
    ->execute();

  // Remove all the block configurations of the module.
  if (module_exists('block')) {
    db_delete('block')
      ->condition('module', 'nice_menus')
      ->execute();
    db_delete('block_node_type')
      ->condition('module', 'nice_menus')
      ->execute();
    db_delete('block_role')
      ->condition('module', 'nice_menus')
      ->execute();
  }

  cache_clear_all();
}

/**
 * Implements hook_update_N().
 */
function nice_menus_update_6000() {
  // Existing blocks need to be set to no caching.
  $ret = array();
  /*
   * TODO update_sql has been removed. Use the database API for any
   * schema or data changes.
   * update_sql("UPDATE {block} SET cache = -1 WHERE module = 'nice_menus'").
   */
  $ret[] = array();
  /*
   * hook_update_N() no longer returns a $ret array. Instead, return
   * nothing or a translated string indicating the update ran successfully.
   * See http://drupal.org/node/224333#update_sql.
   */
  return t('TODO Add a descriptive string here to show in the UI.');
}

/**
 * Implements hook_update_N().
 */
function nice_menus_update_6001() {
  // Switch the JS toggle variable name.
  $old_setting = variable_get('nice_menus_ie', 1);
  variable_set('nice_menus_js', $old_setting);
  variable_del('nice_menus_ie');
  // hook_update_N() no longer returns a $ret array. Instead, return
  // nothing or a translated string indicating the update ran successfully.
  // See http://drupal.org/node/224333#update_sql.
  return t('TODO Add a descriptive string here to show in the UI.');
}

/**
 * Implements hook_update_N().
 *
 * Update the menu selection variables to match the new format that allows
 * selection of the exact menu item to start the display from.
 */
function nice_menus_update_6002() {
  for ($delta = 1; $delta <= variable_get('nice_menus_number', '2'); $delta++) {
    $menu = variable_get('nice_menus_menu_' . $delta, 'navigation');
    // If no menu item is selected.
    if (strpos($menu, ':') === FALSE) {
      variable_set('nice_menus_menu_' . $delta, $menu . ':0');
    }
  }
}