WP110 #1191: Updated the uib_feide module to consume groups from Feide

The scope of the task has changed a bit since the issue was first created and part of the work was to remove and rewrite code for the previous assumptions we made.

uib_feide.module

@@ -8,9 +8,6 @@
  * Feide OpenID connection.
  */
 
-use Drupal\Component\Plugin\Exception\PluginException;
-use Drupal\user\UserInterface;
-
 /**
  * Implements hook_openid_connect_userinfo_alter().
  */
@@ -22,11 +19,11 @@ function uib_feide_openid_connect_userinfo_alter(#[\SensitiveParameter] array &$
     'GET',
     'https://api.dataporten.no/userinfo/v1/userinfo',
     ['headers' => ['Authorization' => 'Bearer ' . $context['tokens']['access_token']]]);
-  $extUserInfo = json_decode($response->getBody(), true);
+  $extUserInfo = json_decode($response->getBody(), TRUE);
   $userinfo['groups'] = [];
   if (count($extUserInfo) > 1 && isset($extUserInfo['eduPersonEntitlement'])) {
     foreach ($extUserInfo['eduPersonEntitlement'] as $group) {
-      $userinfo['groups'][] = Roles::from($group)->name;
+      $userinfo['groups'][] = Roles::{Roles::from($group)->name}->getRole();
     }
   }
 }
@@ -54,9 +51,21 @@ function uib_feide_openid_connect_pre_authorize($account, array $context) : bool
   return TRUE;
 }
 
-enum Roles: string
-{
-  case study_program_contributor = 'https://api.uib.no/names/roles/eksternweb/uibno_studies_and_students_author';
-  case study_program_editor = 'https://api.uib.no/names/roles/eksternweb/uibno_studies_and_students_manager';
+/**
+ * Enum maintaining drupal roles and the associated group definitions in FEIDE.
+ */
+enum Roles: string {
+  case StudyProgramContributor = 'https://api.uib.no/names/roles/eksternweb/uibno_studies_and_students_author';
+  case StudyProgramEditor = 'https://api.uib.no/names/roles/eksternweb/uibno_studies_and_students_manager';
+
+  /**
+   * Function mapping drupal roles to enum cases.
+   */
+  public function getRole(): string {
+    return match ($this) {
+      Roles::StudyProgramContributor => 'study_program_contributor',
+      Roles::StudyProgramEditor => 'study_program_editor',
+    };
+  }
 
 }