Code improvements

app/Providers/AuthCheckProvider.php

@@ -7,12 +7,12 @@ use App\Models\User;
 
 class AuthCheckProvider {
     public function checkLoggedIn() : bool {
-        if (!auth()->check()) {
+        $user = currentUser();
+        if ($user === null) {
             return false;
         }
 
-        $user = auth()->user();
-        $tenant = app('tenant');
+        $tenant = currentTenant();
         if ($tenant->slug === 'lv') {
             return $user->active;
         }
@@ -29,9 +29,9 @@ class AuthCheckProvider {
             return null;
         }
 
-        $user = auth()->user();
+        $user = currentUserOrFail();
 
-        if (app('tenant')->slug === 'lv') {
+        if (currentTenant()->slug === 'lv') {
             return $user->user_role_main;
         }
 
@@ -50,7 +50,7 @@ class AuthCheckProvider {
      * Diese Rolle hebt das lokale Rechtesystem für alle Sub-Tenants auf.
      */
     public function isMainAdministrator(?User $user = null) : bool {
-        $user ??= auth()->user();
+        $user ??= currentUser();
 
         return $user !== null
             && $user->user_role_main === UserRole::USER_ROLE_ADMIN;