redirect home page by permission

opencase.permissions.yml

@@ -2,4 +2,8 @@ use opencase:
   title: 'Use OpenCase'
   description: 'Use the OpenCase case management system'
   restrict access: true
+view opencase add new things menu:
+  title: 'View OpenCase "add new things" menu'
+  description: 'View OpenCase "add new things" menu'
+  restrict access: true
 

opencase.routing.yml

@@ -5,12 +5,12 @@ opencase.opencase_admin_menu:
 opencase.opencase_cases_menu:
   path: '/'
   requirements:
-    _permission: 'use opencase'
+    _permission: 'view all published case entities'
 opencase.opencase_add_new_things_menu:
   path: '/'
   requirements:
-    _permission: 'use opencase'
+    _permission: 'view add new things menu'
 opencase.opencase_reporting_menu:
   path: '/'
   requirements:
-    _permission: 'use opencase'
+    _permission: 'view reporting menu'

opencase.services.yml

@@ -6,3 +6,8 @@ services:
     # Priority determines the order in which Breadcrumb services run.
     tags:
       - { name: breadcrumb_builder, priority: 100 }
+
+  opencase.subscriber:
+    class: Drupal\opencase\EventSubscriber\OpencaseSubscriber
+    tags:
+      - { name: event_subscriber }

src/EventSubscriber/OpencaseSubscriber.php

@@ -0,0 +1,59 @@
+<?php
+
+namespace Drupal\opencase\EventSubscriber;
+ 
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+use Symfony\Component\HttpFoundation\RedirectResponse;
+use Symfony\Component\HttpKernel\Event\GetResponseEvent;
+use Symfony\Component\HttpKernel\KernelEvents;
+use Drupal\Core\Url;
+ 
+/**
+ * Class OpencaseSubscriber.
+ *
+ * @package Drupal\opencase\EventSubscriber
+ */
+class OpencaseSubscriber implements EventSubscriberInterface {
+
+    private $alternativeHomePage = '/opencase/actors/client';
+
+  /**
+   * Registers the methods in this class that should be listeners.
+   *
+   * @return array
+   *   An array of event listener definitions.
+   */
+  public static function getSubscribedEvents() {
+    $events[KernelEvents::REQUEST][] = ['onRequest'];
+    return $events;
+  }
+
+  /**
+   * Manipulates the request object.
+   *
+   * @param \Symfony\Component\HttpKernel\Event\GetResponseEvent $event
+   *   The Event to process.
+   */
+  public function onRequest(GetResponseEvent $event): void {
+    if ($this->requestIsForHomePage($event) && $this->currentUserShouldBeDirectedToAlternativeHomePage()){
+        $this->redirectToAlternativeHomePage($event);
+    }
+  }
+
+  private function requestIsForHomePage($event):bool {
+    return $event->getRequest()->getRequestUri() == '/';
+  }
+  
+  private function currentUserShouldBeDirectedToAlternativeHomePage():bool {
+    return $this->currentUserCanSeeAllCases();
+  }
+  private function currentUserCanSeeAllCases():bool {
+    return \Drupal::currentUser()->hasPermission('view all published case entities');
+  }
+
+  private function redirectToAlternativeHomePage(GetResponseEvent $event):void {
+    $redirect_target_url = Url::fromUserInput($this->alternativeHomePage);
+    $response = new RedirectResponse($redirect_target_url->setAbsolute()->toString());
+    $event->setResponse($response);
+  }
+}