Issue #3259598 by beagaliana: Add a Whatsapp block that includes the chatwithio javascript

<?php

/**

 * @file

 * Contains \Drupal\whatsapp\Form\WhatsappSettingsForm.

 */

namespace Drupal\whatsapp\Form;

use Drupal\Core\Config\ConfigFactoryInterface;

use Drupal\Core\Extension\ModuleHandlerInterface;

use Drupal\Core\Form\ConfigFormBase;

use Drupal\Core\Form\FormStateInterface;

use Drupal\Core\Routing\RedirectDestinationInterface;

use Drupal\Core\Url;

use Symfony\Component\DependencyInjection\ContainerInterface;

/**

 * Configure WhatsApp module settings.

 */

class WhatsappSettingsForm extends ConfigFormBase {

  /**

   * Config settings.

   *

   * @var string

   */

  const SETTINGS = 'whatsapp.settings';

  /**

   * {@inheritdoc}

   */

  public function getFormId() {

    return 'id_account';

  }

  /**

   * {@inheritdoc}

   */

  protected function getEditableConfigNames() {

    return [

      static::SETTINGS,

    ];

  }

  /**

   * {@inheritdoc}

   */

  public function buildForm(array $form, FormStateInterface $form_state) {

    $config = $this->config(static::SETTINGS);

    $form['id_account'] = [

      '#type' => 'textfield',

      '#title' => $this->t('Widget key'),

      '#default_value' => $config->get('id_account'),

    ];

    return parent::buildForm($form, $form_state);

  }

  /**

   * {@inheritdoc}

   */

  public function submitForm(array &$form, FormStateInterface $form_state) {

    // Retrieve the configuration.

    $this->configFactory->getEditable(static::SETTINGS)

      // Set the submitted configuration setting.

      ->set('id_account', $form_state->getValue('id_account'))

      ->save();

    parent::submitForm($form, $form_state);

  }

}

<?php

namespace Drupal\whatsapp\Plugin\Block;

use Drupal\Core\Block\BlockBase;

use Drupal\Core\Cache\Cache;

use Drupal\Core\Config\ConfigFactoryInterface;

use Drupal\Core\Plugin\ContainerFactoryPluginInterface;

use Symfony\Component\DependencyInjection\ContainerInterface;

use Drupal\Core\Language\LanguageManagerInterface;

use Drupal\Core\Form\FormStateInterface;

/**

 * Provides a 'WhatsApp' Block.

 *

 * @Block(

 *   id = "whatsapp_block",

 *   admin_label = @Translation("WhatsApp block"),

 * )

 */

class WhatsappBlock extends BlockBase implements ContainerFactoryPluginInterface {

    /**

     * The configuration factory.

     *

     * @var \Drupal\Core\Config\ConfigFactoryInterface

     */

    protected $configFactory;

    /**

     * Constructs a new WhatsappBlock object.

     *

     * @param array $configuration

     *   A configuration array containing information about the plugin instance.

     * @param string $plugin_id

     *   The plugin_id for the plugin instance.

     * @param mixed $plugin_definition

     *   The plugin implementation definition.

     * @param \Drupal\Core\Config\ConfigFactoryInterface $config_factory

     *   The factory for configuration objects.

     */

    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 build() {

        $config_key = $this->configFactory->get('whatsapp.settings')->get('id_account');

        echo $config_key;

        $iframe_url = "https://widget.tochat.be/bundle.js?key=" . $config_key;

        return [

          '#type' => 'inline_template',

          '#template' => '<script defer src="{{ url }}"></script>',

          '#context' => [

            'url' => $iframe_url,

          ],

        ];

    }

    /**

     * {@inheritdoc}

     */

    public function getCacheContexts() {

        return Cache::mergeContexts(parent::getCacheContexts(), ['languages:language_interface']);

    }

}

whatsapp.settings_form:

  path: '/admin/config/services/whatsapp'

  defaults:

    _form: '\Drupal\whatsapp\Form\WhatsappSettingsForm'

    _title: 'WhatsApp Settings'

  requirements:

    _permission: 'whatsapp configuration form'