Qwen 3.7 Plus (paid)

<?php

declare(strict_types=1);

namespace Drupal\current_date_block\Plugin\Block;

use Drupal\Core\Block\Attribute\Block;
use Drupal\Core\Block\BlockBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\StringTranslation\TranslatableMarkup;

/**
 * Provides a current date block with configurable format.
 */
#[Block(
  id: 'current_date_block',
  admin_label: new TranslatableMarkup('Current Date Block'),
  category: new TranslatableMarkup('Custom'),
)]
final class CurrentDateBlock extends BlockBase {

  /**
   * {@inheritdoc}
   */
  public function defaultConfiguration(): array {
    return [
      'block_label' => $this->t('Current Date'),
      'date_format' => 'long',
      'custom_date_format' => '',
    ];
  }

  /**
   * {@inheritdoc}
   */
  public function blockForm($form, FormStateInterface $form_state): array {
    $form['block_label'] = [
      '#type' => 'textfield',
      '#title' => $this->t('Block title'),
      '#default_value' => $this->configuration['block_label'],
      '#required' => TRUE,
      '#description' => $this->t('The title displayed above the date.'),
    ];

    $form['date_format'] = [
      '#type' => 'select',
      '#title' => $this->t('Date format'),
      '#default_value' => $this->configuration['date_format'],
      '#options' => [
        'short' => $this->t('Short (e.g. @format)', ['@format' => date('m/d/Y')]),
        'medium' => $this->t('Medium (e.g. @format)', ['@format' => date('D, m/d/Y')]),
        'long' => $this->t('Long (e.g. @format)', ['@format' => date('l, F j, Y')]),
        'custom' => $this->t('Custom'),
      ],
      '#description' => $this->t('Select a predefined date format or choose custom.'),
    ];

    $form['custom_date_format'] = [
      '#type' => 'textfield',
      '#title' => $this->t('Custom date format'),
      '#default_value' => $this->configuration['custom_date_format'],
      '#description' => $this->t('A PHP date format string, e.g. <code>Y-m-d</code>, <code>d.m.Y H:i</code>. See <a href=":url">PHP date()</a> documentation.', [':url' => 'https://www.php.net/manual/datetime.format.php']),
      '#states' => [
        'visible' => [
          ':input[name="settings[date_format]"]' => ['value' => 'custom'],
        ],
        'required' => [
          ':input[name="settings[date_format]"]' => ['value' => 'custom'],
        ],
      ],
    ];

    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function blockValidate($form, FormStateInterface $form_state): void {
    if ($form_state->getValue('date_format') === 'custom') {
      $custom_format = $form_state->getValue('custom_date_format');
      if (empty($custom_format)) {
        $form_state->setErrorByName('custom_date_format', $this->t('Custom date format is required when "Custom" is selected.'));
      }
    }
  }

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

  /**
   * {@inheritdoc}
   */
  public function build(): array {
    $label = $this->configuration['block_label'];
    $format_choice = $this->configuration['date_format'];

    $format_map = [
      'short' => 'm/d/Y',
      'medium' => 'D, m/d/Y',
      'long' => 'l, F j, Y',
    ];

    $php_format = $format_choice === 'custom'
      ? $this->configuration['custom_date_format']
      : ($format_map[$format_choice] ?? 'l, F j, Y');

    $current_date = \Drupal::service('date.formatter')->format(
      \Drupal::time()->getRequestTime(),
      'custom',
      $php_format,
    );

    return [
      '#theme' => 'current_date_block',
      '#label' => $label,
      '#date' => $current_date,
      '#cache' => [
        'contexts' => ['timezone'],
        'max-age' => 86400,
      ],
    ];
  }

}