packthub_ebook_integration-1.0.0/src/Form/EbookContentTypeForm.php

<?php

namespace Drupal\packt\Form;

use Drupal\Core\Config\ConfigFactoryInterface;
use Drupal\Core\Form\FormBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Messenger\MessengerInterface;
use Drupal\packt\Plugin\EbookDefinition;
use Symfony\Component\DependencyInjection\ContainerInterface;

class EbookContentTypeForm extends FormBase {

  /**
   * Constructs a new CustomFormExampleForm object.
   *
   * @param ConfigFactoryInterface $config_factory
   *   The configuration factory.
   */
  public function __construct(ConfigFactoryInterface $config_factory, MessengerInterface $messenger) {
    $this->configFactory = $config_factory;
    $this->messenger = $messenger;
  }

  /**
   * {@inheritdoc}
   */
  public static function create(ContainerInterface $container): EbookContentTypeForm|static {
    return new static(
      $container->get('config.factory'),
      $container->get('messenger')
    );
  }


  public function getFormId(): string {
    return "packt_ebook_content_type_form";
  }

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

    $configuration = new EbookDefinition();
    $configs = $configuration->contentTypeDefinition();
    $options =[];
    foreach ($configs as $config) {
      $options[$config['id']] = $config['label'];
    }

    $form['content_type'] = array(
      '#type' => 'select',
      '#title' => t('Content Types, Select any of these content types to be used for ebook creation'),
      '#options' =>$options,
      '#empty_option' => t('- Select -'),
      '#required' => TRUE,
      '#ajax' => array(
        'callback' => array($this, 'ajaxCallback'),
        'wrapper' => 'dynamic_fields_wrapper',
        'method' => 'replace',
        'effect' => 'fade',
      ),
    );

    // Dynamic fields wrapper.
    $form['dynamic_fields'] = array(
      '#type' => 'container',
      '#attributes' => array('id' => 'dynamic_fields_wrapper'),
    );

    // Additional fields that will be displayed based on the select field value.
    $selected_value = $form_state->getValue('content_type');
    if (!empty($selected_value)) {
      $this->fieldsCollection($selected_value,$configs, $form);
    }

    $form['submit'] = array(
      '#type' => 'submit',
      '#value' => t('Submit'),
    );

    return $form;
  }


  public function submitForm(array &$form, FormStateInterface $form_state): void {
   $data = [];
   $notNeeded = ['op','form_token','form_id','form_build_id','submit'];
   foreach ($form_state->getValues() as $key=>$value) {
     if(!in_array($key, $notNeeded) && !empty($value)) {
       $data[$key] = $value;
     }
   }
    $config = $this->configFactory->getEditable('packt.fields_settings');
    if($config->set('field_sets', $data)->save()) {
      $this->messenger->addMessage("You have successfully saved configurations");
    }
    else {
      $this->messenger->addError("Failed to save the configuration");
    }
  }

  /**
   * Ajax callback to update dynamic fields based on the select field value.
   */
  public function ajaxCallback(array &$form, FormStateInterface $form_state) {
    return $form['dynamic_fields'];
  }

  private function fieldsCollection(string $type, array $configs, &$form): void {

    $fields = [];
    foreach ($configs as $config) {
      if($type === $config['id']) {
        $fields = $config['fields'];
        break;
      }
    }

    if(!empty($fields)) {
      foreach ($fields as $field) {
        $form['dynamic_fields'][$field['id']] = [
          '#type' => 'select',
          '#title' => $field['label'],
          '#options' =>(new EbookDefinition())->packthubFields(),
          '#empty_option' => t('- Select -'),
        ];
      }
    }
  }
}