LOOP-1010: Auto login

web/profiles/custom/os2loop/modules/os2loop_user_login/README.md

@@ -72,8 +72,8 @@ $config['openid_connect.settings']['userinfo_mappings']['os2loop_user_place'] =
 
 ### IdP configuration
 
-Your identity provider must allow `https://«OS2Loop
-url»/openid-connect/generic` as a valid return url.
+Your identity provider must allow `https://«OS2Loop url»/openid-connect/generic`
+as a valid return url.
 
 ```php
 // web/sites/*/settings.local.php

web/profiles/custom/os2loop/modules/os2loop_user_login/os2loop_user_login.module

@@ -29,10 +29,19 @@ function os2loop_user_login_menu_local_tasks_alter(&$data, $route_name) {
 /**
  * Implements hook_user_login().
  */
-function os2loop_user_user_login(UserInterface $account) {
+function os2loop_user_login_user_login(UserInterface $account) {
   Drupal::service('os2loop_user_login.helper')->userLogin($account);
 }
 
+/**
+ * Implements hook_preprocess_block().
+ *
+ * @see \Drupal\os2loop_user_login\Helper\Helper::preprocessBlock()
+ */
+function os2loop_user_login_preprocess_block(array &$variables) {
+  Drupal::service('os2loop_user_login.helper')->preprocessBlock($variables);
+}
+
 /**
  * Implements hook_openid_connect_userinfo_alter().
  */

web/profiles/custom/os2loop/modules/os2loop_user_login/src/Form/SettingsForm.php

@@ -108,6 +108,21 @@ public function buildForm(array $form, FormStateInterface $form_state) {
       ),
     ];
 
+    $options = [];
+    $options['oidc'] = $this->t('OpenID Connect');
+    // @todo handle SAML
+    // $options['saml'] = $this->t('SAML');
+    if (!empty($options)) {
+      $form['default_login_method'] = [
+        '#type' => 'select',
+        '#title' => $this->t('Default login method'),
+        '#options' => $options,
+        '#empty_value' => '',
+        '#default_value' => $config->get('default_login_method'),
+        '#description' => $this->t('The default login method to use. If specified, anonymous users will automatically be logged id with this method.'),
+      ];
+    }
+
     return parent::buildForm($form, $form_state);
   }
 
@@ -119,6 +134,7 @@ public function submitForm(array &$form, FormStateInterface $form_state) {
       ->set('show_drupal_login', $form_state->getValue('show_drupal_login'))
       ->set('show_oidc_login', $form_state->getValue('show_oidc_login'))
       ->set('show_saml_login', $form_state->getValue('show_saml_login'))
+      ->set('default_login_method', $form_state->getValue('default_login_method'))
       ->save();
 
     drupal_flush_all_caches();

web/profiles/custom/os2loop/modules/os2loop_user_login/src/Helper/Helper.php

@@ -120,6 +120,24 @@ public function alterForm(&$form, FormStateInterface $form_state, $form_id) {
     }
   }
 
+  /**
+   * Implements hook_preprocess_block().
+   */
+  public function preprocessBlock(array &$variables) {
+    if ('userlogin' === ($variables['elements']['#id'] ?? NULL)) {
+      $defaultLoginMethod = $this->config->get('default_login_method');
+      switch ($defaultLoginMethod) {
+        case 'oidc':
+          $variables['default_login_form_id'] = 'openid-connect-login-form';
+          break;
+
+        case 'saml':
+          // @todo Handle SAML redirect
+          break;
+      }
+    }
+  }
+
   /**
    * Remove "Connected accounts" tab on user profile and edit form.
    *

web/profiles/custom/os2loop/themes/os2loop_theme/templates/block/block--user-login-block.html.twig

@@ -38,3 +38,15 @@
     {{ content|without('user_links') }}
   {% endblock %}
 </div>
+
+{# Check for default login form and submit if found. #}
+{% if default_login_form_id|default(null) %}
+<script>
+  (function() {
+    var form = document.getElementById({{ default_login_form_id|json_encode|raw }});
+    if (form) {
+      form.submit()
+    }
+  })()
+</script>
+{% endif %}