class SimpleConfigSectionStorage

class SimpleConfigSectionStorage extends PluginBase implements SectionStorageInterface, SectionStorageLocalTaskProviderInterface, ContainerFactoryPluginInterface {
  use ContextAwarePluginTrait;
  use LayoutBuilderRoutesTrait;
  use SectionListTrait;
  
  /**
   * The config factory.
   *
   * @var \Drupal\Core\Config\ConfigFactoryInterface
   */
  protected $configFactory;
  
  /**
   * An array of sections.
   *
   * @var \Drupal\layout_builder\Section[]|null
   */
  protected $sections;
  
  /**
   * {@inheritdoc}
   */
  public function __construct(array $configuration, $plugin_id, $plugin_definition, ConfigFactoryInterface $config_factory) {
    parent::__construct($configuration, $plugin_id, $plugin_definition);
    $this->configFactory = $config_factory;
  }
  
  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
    return new static($configuration, $plugin_id, $plugin_definition, $container->get('config.factory'));
  }
  
  /**
   * {@inheritdoc}
   */
  public function getStorageType() {
    return $this->getPluginId();
  }
  
  /**
   * {@inheritdoc}
   */
  public function getStorageId() {
    return $this->getContextValue('config_id');
  }
  
  /**
   * {@inheritdoc}
   */
  public function label() {
    return $this->getStorageId();
  }
  
  /**
   * Returns the name to be used to store in the config system.
   */
  protected function getConfigName() {
    return 'layout_builder_test.' . $this->getStorageType() . '.' . $this->getStorageId();
  }
  
  /**
   * {@inheritdoc}
   */
  public function getSections() {
    if (is_null($this->sections)) {
      $sections = $this->configFactory
        ->get($this->getConfigName())
        ->get('sections') ?: [];
      $this->setSections(array_map([
        Section::class,
        'fromArray',
      ], $sections));
    }
    return $this->sections;
  }
  
  /**
   * {@inheritdoc}
   */
  protected function setSections(array $sections) {
    $this->sections = array_values($sections);
    return $this;
  }
  
  /**
   * {@inheritdoc}
   */
  public function save() {
    $sections = array_map(function (Section $section) {
      return $section->toArray();
    }, $this->getSections());
    $config = $this->configFactory
      ->getEditable($this->getConfigName());
    $return = $config->get('sections') ? SAVED_UPDATED : SAVED_NEW;
    $config->set('sections', $sections)
      ->save();
    return $return;
  }
  
  /**
   * {@inheritdoc}
   */
  public function buildRoutes(RouteCollection $collection) {
    $this->buildLayoutRoutes($collection, $this->getPluginDefinition(), 'layout-builder-test-simple-config/{id}');
  }
  
  /**
   * {@inheritdoc}
   */
  public function deriveContextsFromRoute($value, $definition, $name, array $defaults) {
    $contexts['config_id'] = new Context(new ContextDefinition('string'), $value ?: $defaults['id']);
    return $contexts;
  }
  
  /**
   * {@inheritdoc}
   */
  public function buildLocalTasks($base_plugin_definition) {
    $type = $this->getStorageType();
    $local_tasks = [];
    $local_tasks["layout_builder.{$type}.view"] = $base_plugin_definition + [
      'route_name' => "layout_builder.{$type}.view",
      'title' => $this->t('Layout'),
      'base_route' => "layout_builder.{$type}.view",
    ];
    $local_tasks["layout_builder.{$type}.view__child"] = $base_plugin_definition + [
      'route_name' => "layout_builder.{$type}.view",
      'title' => $this->t('Layout'),
      'parent_id' => "layout_builder_ui:layout_builder.{$type}.view",
    ];
    $local_tasks["layout_builder.{$type}.discard_changes"] = $base_plugin_definition + [
      'route_name' => "layout_builder.{$type}.discard_changes",
      'title' => $this->t('Discard changes'),
      'parent_id' => "layout_builder_ui:layout_builder.{$type}.view",
      'weight' => 5,
    ];
    return $local_tasks;
  }
  
  /**
   * {@inheritdoc}
   */
  public function getLayoutBuilderUrl($rel = 'view') {
    return Url::fromRoute("layout_builder.{$this->getStorageType()}.{$rel}", [
      'id' => $this->getStorageId(),
    ]);
  }
  
  /**
   * {@inheritdoc}
   */
  public function getRedirectUrl() {
    return $this->getLayoutBuilderUrl();
  }
  
  /**
   * {@inheritdoc}
   */
  public function access($operation, ?AccountInterface $account = NULL, $return_as_object = FALSE) {
    $result = AccessResult::allowed();
    return $return_as_object ? $result : $result->isAllowed();
  }
  
  /**
   * {@inheritdoc}
   */
  public function getContextsDuringPreview() {
    return $this->getContexts();
  }
  
  /**
   * {@inheritdoc}
   */
  public function isApplicable(RefinableCacheableDependencyInterface $cacheability) {
    return TRUE;
  }

}