social_auth_vipps-8.x-2.1/social_auth_vipps.module

<?php

/**
 * @file
 * Hook implementations for Social Auth Vipps module.
 */

use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Url;
use Drupal\social_auth_vipps\Form\VippsAuthSettingsForm;

/**
 * Implements hook_help().
 */
function social_auth_vipps_help($route_name, RouteMatchInterface $route_match) {
  $output = '';

  switch ($route_name) {
    case 'social_auth_vipps.settings_form':
      $output = '<h3>' . t('Configuration instructions') . '</h3>';
      $output .= '<p>';
      $output .= t('Configuration instructions and other useful documentation can be found at the <a href="@doc-url">Social Auth documentation</a>.',
          ['@doc-url' => 'https://www.drupal.org/docs/8/modules/social-api/social-api-2x/social-auth-2x/installing-social-auth-2x']);
      $output .= '</p>';
      break;
  }

  return $output;
}

/**
 * Implements hook_form_alter().
 */
function social_auth_vipps_form_alter(&$form, FormStateInterface $form_state, $form_id) {
  if ($form_id === 'user_login_form') {
    social_auth_vipps_show_vipps_login_button($form, $form_state);
  }
}

/**
 * Show login button.
 *
 * @param array $form
 *   Login form.
 * @param \Drupal\Core\Form\FormStateInterface $form_state
 *   Login form state.
 */
function social_auth_vipps_show_vipps_login_button(array &$form, FormStateInterface $form_state) {
  /** @var \Drupal\Core\Config\ConfigFactoryInterface $configFactory */
  $configFactory = Drupal::service('config.factory');
  $config = $configFactory->get(VippsAuthSettingsForm::SETTINGS);

  if (boolval($config->get('show_in_login_form'))) {

    $config = \Drupal::configFactory()->getEditable('social_auth.settings');
    $btnImg = '/' . $config->get('log_in_with_vipps_btn');

    $form['login_with_vipps_button'] = [
      '#type' => 'item',
      '#markup' => sprintf("<div class='vipps-button-group'><a href='%s' class='%s' id = '%s'><img src='%s' alt='" . t('vipps login') . "'></a></div>",
        Url::fromRoute('social_auth_vipps.redirect_to_vipps')->toString(),
        'login-with-vipps-link',
        'login-with-vipps-link',
        $btnImg
      ),
      '#weight' => -1,
    ];

    $form['#attached']['library'][] = 'social_auth_vipps/social_auth_vipps';
  }
}

/**
 * Implements hook_config_schema_info_alter().
 */
function social_auth_vipps_config_schema_info_alter(&$definitions) {
  $definitions["social_auth.settings"]["mapping"]['log_in_with_vipps_btn'] = [
    'type' => 'string',
    'label' => 'Log in with Vipps button',
    'description' => 'Path to the Log in with Vipps button.',
  ];
}