{% import '@lib/di.twig' as di %}
<?php declare(strict_types = 1);

namespace Drupal\{{ machine_name }}\Plugin\Block;

{% sort %}
  {% if access %}
use Drupal\Core\Access\AccessResult;
use Drupal\Core\Session\AccountInterface;
  {% endif %}
use Drupal\Core\Block\BlockBase;
  {% if configurable %}
use Drupal\Core\Form\FormStateInterface;
  {% endif %}
  {% if services %}
{{ di.use(services) }}
use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
use Symfony\Component\DependencyInjection\ContainerInterface;
  {% endif %}
{% endsort %}

/**
 * Provides {{ plugin_label|article|lower }} block.
 *
 * @Block(
 *   id = "{{ plugin_id }}",
 *   admin_label = @Translation("{{ plugin_label }}"),
 *   category = @Translation("{{ category }}"),
 * )
 */
final class {{ class }} extends BlockBase {% if services %}implements ContainerFactoryPluginInterface {% endif %}{

{% if services %}
  /**
   * Constructs the plugin instance.
   */
  public function __construct(
    array $configuration,
    $plugin_id,
    $plugin_definition,
{{ di.signature(services) }}
  ) {
    parent::__construct($configuration, $plugin_id, $plugin_definition);
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition): self {
    return new self(
      $configuration,
      $plugin_id,
      $plugin_definition,
{{ di.container(services) }}
    );
  }

{% endif %}
{% if configurable %}
  /**
   * {@inheritdoc}
   */
  public function defaultConfiguration(): array {
    return [
      'example' => $this->t('Hello world!'),
    ];
  }

  /**
   * {@inheritdoc}
   */
  public function blockForm($form, FormStateInterface $form_state): array {
    $form['example'] = [
      '#type' => 'textarea',
      '#title' => $this->t('Example'),
      '#default_value' => $this->configuration['example'],
    ];
    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function blockSubmit($form, FormStateInterface $form_state): void {
    $this->configuration['example'] = $form_state->getValue('example');
  }

{% endif %}
  /**
   * {@inheritdoc}
   */
  public function build(): array {
    $build['content'] = [
      '#markup' => $this->t('It works!'),
    ];
    return $build;
  }
{% if access %}

  /**
   * {@inheritdoc}
   */
  protected function blockAccess(AccountInterface $account): AccessResult {
    // @todo Evaluate the access condition here.
    return AccessResult::allowedIf(TRUE);
  }
{% endif %}

}
