rc-1.0.x-dev/src/Form/RcSettingsForm.php

<?php

namespace Drupal\rc\Form;

use Drupal\Core\Form\ConfigFormBase;
use Drupal\Core\Form\FormStateInterface;
use ATDev\RocketChat\Chat;

/**
 * Class RcSettingsForm.
 */
class RcSettingsForm extends ConfigFormBase {

  /**
   * {@inheritdoc}
   */
  protected function getEditableConfigNames() {
    return [
      'rc.settings',
    ];
  }

  /**
   * {@inheritdoc}
   */
  public function getFormId() {
    return 'rc_settings';
  }

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state) {
    // Getting the RC Settings from saved configurations.
    $config = $this->config('rc.settings');

    $form['server'] = [
      '#type' => 'textfield',
      '#title' => $this->t('Server URL'),
      '#description' => $this->t('The URL of your Rocket Chat server'),
      '#required' => TRUE,
      '#maxlength' => 255,
      '#size' => 64,
      '#default_value' => $config->get('access.server'),
    ];
    $form['user'] = [
      '#type' => 'textfield',
      '#title' => $this->t('Rocket Chat admin username'),
      '#description' => $this->t('The rocket chat admin username'),
      '#required' => TRUE,
      '#maxlength' => 64,
      '#size' => 64,
      '#default_value' => $config->get('access.user'),
    ];
    $form['secret'] = [
      '#type' => 'password',
      '#title' => $this->t('Rocket Chat admin password'),
      '#description' => $this->t('The password of the rocket chat admin'),
      '#required' => TRUE,
      '#maxlength' => 255,
      '#size' => 64,
      '#default_value' => $config->get('access.secret'),
    ];
    return parent::buildForm($form, $form_state);
  }

  /**
   * {@inheritdoc}
   */
  public function validateForm(array &$form, FormStateInterface $form_state) {
    parent::validateForm($form, $form_state);

    // Set the Rocket Chat server URL.
    $rcURL = $form_state->getValue('server');
    // Remove forward shashed from the end of the URL.
    $rcURL = rtrim($rcURL, "/");

    // Try login with the current credentials.
    $rcUser = $form_state->getValue('user');
    $rcPassword = $form_state->getValue('secret');
    Chat::setUrl($rcURL);
    $result = Chat::login($rcUser, $rcPassword);
    if (!$result) {
      $form_state->setErrorByName('server', 'The provided credentials are not valid, please check them and try again');
      $form_state->setErrorByName('user', 'The provided credentials are not valid, please check them and try again');
      $form_state->setErrorByName('secret', 'The provided credentials are not valid, please check them and try again');

    }

  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    parent::submitForm($form, $form_state);

    $this->config('rc.settings')
      ->set('access.server', rtrim($form_state->getValue('server')))
      ->set('access.user', $form_state->getValue('user'))
      ->set('access.secret', $form_state->getValue('secret'))
      ->save();

  }

}