<?php

/**
 * @file
 * Install, update and uninstall functions for the Hierarchical Select module.
 */


/**
 * Implements hook_uninstall().
 */
function hierarchical_select_uninstall() {
  db_delete('variable')
  ->condition('name', 'hs_config_%', 'LIKE')
  ->execute();

  db_delete('variable')
  ->condition('name', 'hierarchical_select_%', 'LIKE')
  ->execute();
}


//----------------------------------------------------------------------------
// Updates.

/**
 * Update Hierarchical Select to Drupal 7. Basically remove a lot of cruft.
 */
function hierarchical_select_update_7001() {
  // Drop Hierarchical Select's cache table, which is now obsolete.
  db_drop_table('cache_hierarchical_select');

  // Undo Hierarchical Select module weight changes, because they're no longer
  // necessary.
  db_update('system')
  ->fields(array(
    'weight' => 0,
  ))
  ->condition('name', 'hierarchical_select')
  ->execute();
}

/**
 * Update Hierarchical Select config to support improved "entity count".
 */
function hierarchical_select_update_7002() {
  module_load_include('inc', 'hierarchical_select', 'includes/common');
  // Retrieve all information items.
  $info_items = array();
  foreach (module_implements('hierarchical_select_config_info') as $module) {
    $info_items = array_merge_recursive($info_items, module_invoke($module, 'hierarchical_select_config_info'));
  }
  foreach ($info_items as $info_item) {
    // Load config.
    $config = hierarchical_select_common_config_get($info_item['config_id']);

    // Move old settings to new location.
    $config['entity_count'] = array(
      'enabled' => $config['entity_count'],
      'require_entity' => $config['require_entity'],
    );

    // Remove old setting.
    unset($config['require_entity']);

    // Add entity types settings.
    $entity_info = entity_get_info();
    foreach ($entity_info as $entity => $entity_info) {
      if (!empty($entity_info['bundles']) && $entity_info['fieldable'] === TRUE) {
        foreach ($entity_info['bundles'] as $bundle => $bundle_info) {
          if ($entity == 'node') {
            $config['entity_count']['settings']['entity_types'][$entity]['count_' . $entity][$bundle] = $bundle;
          }
          else {
            $config['entity_count']['settings']['entity_types'][$entity]['count_' . $entity][$bundle] = 0;
          }
        }
      }
    }

    // Save new config.
    hierarchical_select_common_config_set($info_item['config_id'], $config);
  }
}