class RestExampleClientController

class RestExampleClientController extends ControllerBase {
    
    /**
     * RestExampleClientCalls object.
     *
     * @var \Drupal\rest_example\RestExampleClientCalls
     */
    private $restExampleClientCalls;
    
    /**
     * RestExampleClientController constructor.
     *
     * @param \Drupal\rest_example\RestExampleClientCalls $rest_example_client_calls
     *   RestExampleClientCalls service.
     */
    public function __construct(RestExampleClientCalls $rest_example_client_calls) {
        $this->restExampleClientCalls = $rest_example_client_calls;
    }
    
    /**
     * {@inheritdoc}
     */
    public static function create(ContainerInterface $container) {
        return new static($container->get('rest_example_client_calls'));
    }
    
    /**
     * Retrieve a list of all nodes available on the remote site.
     *
     * Building the list as a table by calling the RestExampleClientCalls::index()
     * and builds the list from the response of that.
     *
     * @throws \RuntimeException
     * @throws \GuzzleHttp\Exception\GuzzleException
     */
    public function indexAction() {
        if (NULL === $this->configFactory
            ->get('rest_example.settings')
            ->get('server_url')) {
            $this->messenger()
                ->addWarning($this->t('The remote endpoint service address have not been set. Please go and provide the credentials and the endpoint address on the <a href="@url">config page</a>.', [
                '@url' => base_path() . 'examples/rest-client-settings',
            ]));
        }
        $build = [];
        $nodes = $this->restExampleClientCalls
            ->index();
        $build['intro'] = [
            '#markup' => $this->t('This is a list of nodes, of type <em>Rest Example Test</em>, on the remote server. From here you can create new node, edit and delete existing ones.'),
        ];
        $build['node_table'] = [
            '#type' => 'table',
            '#header' => [
                $this->t('Title'),
                $this->t('Type'),
                $this->t('Created'),
                $this->t('Edit'),
                $this->t('Delete'),
            ],
            '#empty' => t('There are no items on the remote system yet'),
        ];
        if (!empty($nodes)) {
            foreach ($nodes as $delta => $node) {
                $build['node_table'][$delta]['title']['#plain_text'] = $node['title'];
                $build['node_table'][$delta]['type']['#plain_text'] = $node['type'];
                $build['node_table'][$delta]['created']['#plain_text'] = $node['created'];
                $build['node_table'][$delta]['edit']['#plain_text'] = Link::createFromRoute($this->t('Edit'), 'rest_example.client_actions_edit', [
                    'id' => $node['nid'],
                ])
                    ->toString();
                $build['node_table'][$delta]['delete']['#plain_tex'] = Link::createFromRoute($this->t('Delete'), 'rest_example.client_actions_delete', [
                    'id' => $node['nid'],
                ])
                    ->toString();
            }
        }
        return $build;
    }

}