class DevelController

class DevelController extends ControllerBase {
    
    /**
     * The dumper service.
     *
     * @var \Drupal\devel\DevelDumperManagerInterface
     */
    protected $dumper;
    
    /**
     * The entity type bundle info service.
     *
     * @var \Drupal\Core\Entity\EntityTypeBundleInfoInterface
     */
    protected $entityTypeBundleInfo;
    
    /**
     * The field type plugin manager service.
     *
     * @var \Drupal\Core\Field\FieldTypePluginManagerInterface
     */
    protected $fieldTypeManager;
    
    /**
     * The field formatter plugin manager.
     *
     * @var \Drupal\Core\Field\FormatterPluginManager
     */
    protected $formatterPluginManager;
    
    /**
     * The field widget plugin manager.
     *
     * @var \Drupal\Core\Field\WidgetPluginManager
     */
    protected $widgetPluginManager;
    
    /**
     * EntityDebugController constructor.
     *
     * @param \Drupal\devel\DevelDumperManagerInterface $dumper
     *   The dumper service.
     * @param \Drupal\Core\Entity\EntityTypeBundleInfoInterface $entity_type_bundle_info
     *   The entity type bundle info service.
     * @param \Drupal\Core\Field\FieldTypePluginManagerInterface $field_type_manager
     *   The field type manager service.
     * @param \Drupal\Core\Field\FormatterPluginManager $formatter_plugin_manager
     *   The field formatter plugin manager.
     * @param \Drupal\Core\Field\WidgetPluginManager $widget_plugin_manager
     *   The field widget plugin manager.
     */
    public function __construct(DevelDumperManagerInterface $dumper, EntityTypeBundleInfoInterface $entity_type_bundle_info, FieldTypePluginManagerInterface $field_type_manager, FormatterPluginManager $formatter_plugin_manager, WidgetPluginManager $widget_plugin_manager) {
        $this->dumper = $dumper;
        $this->entityTypeBundleInfo = $entity_type_bundle_info;
        $this->fieldTypeManager = $field_type_manager;
        $this->formatterPluginManager = $formatter_plugin_manager;
        $this->widgetPluginManager = $widget_plugin_manager;
    }
    
    /**
     * {@inheritdoc}
     */
    public static function create(ContainerInterface $container) {
        return new static($container->get('devel.dumper'), $container->get('entity_type.bundle.info'), $container->get('plugin.manager.field.field_type'), $container->get('plugin.manager.field.formatter'), $container->get('plugin.manager.field.widget'));
    }
    
    /**
     * Clears all caches, then redirects to the previous page.
     */
    public function cacheClear() {
        drupal_flush_all_caches();
        $this->messenger()
            ->addMessage($this->t('Cache cleared.'));
        return $this->redirect('<front>');
    }
    
    /**
     * Theme registry.
     *
     * @return array
     *   The complete theme registry as renderable.
     */
    public function themeRegistry() {
        $hooks = theme_get_registry();
        ksort($hooks);
        return $this->dumper
            ->exportAsRenderable($hooks);
    }
    
    /**
     * Builds the fields info overview page.
     *
     * @return array
     *   Array of page elements to render.
     */
    public function fieldInfoPage() {
        $fields = FieldStorageConfig::loadMultiple();
        ksort($fields);
        $output['fields'] = $this->dumper
            ->exportAsRenderable($fields, $this->t('Fields'));
        $field_instances = FieldConfig::loadMultiple();
        ksort($field_instances);
        $output['instances'] = $this->dumper
            ->exportAsRenderable($field_instances, $this->t('Instances'));
        $bundles = $this->entityTypeBundleInfo
            ->getAllBundleInfo();
        ksort($bundles);
        $output['bundles'] = $this->dumper
            ->exportAsRenderable($bundles, $this->t('Bundles'));
        $field_types = $this->fieldTypeManager
            ->getUiDefinitions();
        ksort($field_types);
        $output['field_types'] = $this->dumper
            ->exportAsRenderable($field_types, $this->t('Field types'));
        $formatter_types = $this->formatterPluginManager
            ->getDefinitions();
        ksort($formatter_types);
        $output['formatter_types'] = $this->dumper
            ->exportAsRenderable($formatter_types, $this->t('Formatter types'));
        $widget_types = $this->widgetPluginManager
            ->getDefinitions();
        ksort($widget_types);
        $output['widget_types'] = $this->dumper
            ->exportAsRenderable($widget_types, $this->t('Widget types'));
        return $output;
    }
    
    /**
     * Builds the state variable overview page.
     *
     * @return array
     *   Array of page elements to render.
     */
    public function stateSystemPage() {
        $can_edit = $this->currentUser()
            ->hasPermission('administer site configuration');
        $header = [
            'name' => $this->t('Name'),
            'value' => $this->t('Value'),
        ];
        if ($can_edit) {
            $header['edit'] = $this->t('Operations');
        }
        $rows = [];
        // State class doesn't have getAll method so we get all states from the
        // KeyValueStorage.
        foreach ($this->keyValue('state')
            ->getAll() as $state_name => $state) {
            $rows[$state_name] = [
                'name' => [
                    'data' => $state_name,
                    'class' => 'table-filter-text-source',
                ],
                'value' => [
                    'data' => $this->dumper
                        ->export($state),
                ],
            ];
            if ($can_edit) {
                $operations['edit'] = [
                    'title' => $this->t('Edit'),
                    'url' => Url::fromRoute('devel.system_state_edit', [
                        'state_name' => $state_name,
                    ]),
                ];
                $rows[$state_name]['edit'] = [
                    'data' => [
                        '#type' => 'operations',
                        '#links' => $operations,
                    ],
                ];
            }
        }
        $output['states'] = [
            '#type' => 'devel_table_filter',
            '#filter_label' => $this->t('Search'),
            '#filter_placeholder' => $this->t('Enter state name'),
            '#filter_title' => $this->t('Enter a part of the state name to filter by.'),
            '#header' => $header,
            '#rows' => $rows,
            '#empty' => $this->t('No state variables found.'),
            '#attributes' => [
                'class' => [
                    'devel-state-list',
                ],
            ],
        ];
        return $output;
    }
    
    /**
     * Builds the session overview page.
     *
     * @return array
     *   Array of page elements to render.
     */
    public function session() {
        $output['description'] = [
            '#markup' => '<p>' . $this->t('Here are the contents of your $_SESSION variable.') . '</p>',
        ];
        $output['session'] = [
            '#type' => 'table',
            '#header' => [
                $this->t('Session name'),
                $this->t('Session ID'),
            ],
            '#rows' => [
                [
                    session_name(),
                    session_id(),
                ],
            ],
            '#empty' => $this->t('No session available.'),
        ];
        $output['data'] = $this->dumper
            ->exportAsRenderable($_SESSION);
        return $output;
    }

}