Issue #2651762 by purushotam.rai: Configuration Form - Recovery Password Module

      return $output;

  }

}

/**

 * Returns a mail string for a variable name.

 *

 * Used by recovery_pass_mail() and the settings forms to retrieve strings.

 */

function _recovery_pass_mail_text($key, $language = NULL, $replace = TRUE, $user = array()) {

  $langcode = isset($language) ? $language->language : NULL;

  if ($admin_setting = \Drupal::config('recovery_pass.settings')->get('recovery_pass_' . $key, FALSE)) {

    // An admin setting overrides the default string.

    $text = $admin_setting;

  }

  else {

    // No override, return default string.

    switch ($key) {

      case 'email_subject':

        $text = t('Replacement login information for [user:name] at [site:name]', array(), array('langcode' => $langcode));

        break;

      case 'email_text':

        $text = t("[user:name],

A request to reset the password for your account has been made at [site:name].

Your new password is [user_new_password].

--  [site:name] team", array(), array('langcode' => $langcode));

        break;

      case 'old_pass_warning':

        $text = t('You are using <strong>old password</strong>, your password was reset recently. New Password was sent to your registered email id.');

        break;

    }

  }

  if ($replace && \Drupal::moduleHandler()->moduleExists('token')) {

    // Token Replace the text.

    return Drupal::token()->replace($text, array('user' => $user));

  }

  return $text;

}

<?php

/**

 * @file

 * Contains \Drupal\recovery_pass\RecoveryPassSettingsForm

 */

namespace Drupal\recovery_pass;

use Drupal\Core\Form\ConfigFormBase;

use Drupal\Core\Form\FormStateInterface;

/**

 * Configure recovery_pass settings for this site.

 */

class RecoveryPassSettingsForm extends ConfigFormBase {

  /**

   * {@inheritdoc}

   */

  public function getFormId() {

    return 'recovery_pass_admin_settings';

  }

  /**

   * {@inheritdoc}

   */

  protected function getEditableConfigNames() {

    return [

      'recovery_pass.settings',

    ];

  }

  /**

   * {@inheritdoc}

   */

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

    //$config = $this->config('recovery_pass.settings');

    // $form['recovery_pass_thing'] = array(

    //   '#type' => 'textfield',

    //   '#title' => $this->t('thing'),

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

    // );

    $form['recovery_pass_help_text'] = array(

      '#type' => 'item',

      '#markup' => t('Edit the e-mail messages sent to users who request a new password. The list of available tokens that can be used in e-mails is provided below. For displaying new password please use <strong>[user_new_password]</strong> placeholder.'),

    );

    $form['recovery_pass_email_subject'] = array(

      '#type' => 'textfield',

      '#title' => t('Subject'),

      '#required' => TRUE,

      '#default_value' => _recovery_pass_mail_text('email_subject'),

    );

    $form['recovery_pass_email_text'] = array(

      '#type' => 'textarea',

      '#title' => t('Email Body'),

      '#required' => TRUE,

      '#default_value' => _recovery_pass_mail_text('email_text'),

    );

    if (\Drupal::moduleHandler()->moduleExists("htmlmail")) {

      // Adding description incase HTMLMAIL module exists.

      $form['recovery_pass_email_text']['#description'] = t('Supports HTML Mail provided HTMLMAIL module is enabled.');

    }

    if (\Drupal::moduleHandler()->moduleExists("token")) {

      $form['token_help'] = array(

        '#type' => 'markup',

        '#token_types' => array('user'),

        '#theme' => 'token_tree_link',

      );

    }

    $form['recovery_pass_fpass_redirect'] = array(

      '#type' => 'textfield',

      '#title' => t('Redirect Path after Forgot Password Page'),

      '#maxlength' => 255,

      '#default_value' => \Drupal::config('recovery_pass.settings')->get('recovery_pass_fpass_redirect') ? \Drupal::config('recovery_pass.settings')->get('recovery_pass_fpass_redirect') : 'user',

      '#description' => t('The path to redirect user, after forgot password form. This can be an internal Drupal path such as %add-node or an external URL such as %drupal. Enter %front to link to the front page.',

        array(

          '%front' => '<front>',

          '%add-node' => 'node/add',

          '%drupal' => 'http://drupal.org',

        )

      ),

      '#required' => TRUE,

      '#element_validate' => array(array($this, '_recovery_pass_validate_path')),

    );

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

  }

  /**

   * {@inheritdoc}

   */

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

    $this->config('recovery_pass.settings')

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

      ->save();

    $this->config('recovery_pass.settings')

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

      ->save();

    $this->config('recovery_pass.settings')

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

      ->save();

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

  }

}

/**

 * Validates path entered by user.

 */

function _recovery_pass_validate_path($element, &$form_state, $form) {

  if (!empty($element['#value'])) {

    $path = $element['#value'];

    if (!drupal_valid_path($path) && !drupal_lookup_path('source', $path) && !url_is_external($path)) {

      form_error($element, t('Please provide valid redirect path.'));

    }

  }

}