refactor(backups): centralize storage deletion guard

app/Http/Controllers/Api/ApplicationsController.php

@@ -4910,13 +4910,7 @@ public function delete_storage(Request $request): JsonResponse
             ], 422);
         }
 
-        if ($storage->scheduledBackups()->exists()) {
+        $storage->abortIfScheduledBackupsExist();
-            return response()->json([
-                'message' => $storage instanceof LocalFileVolume
-                    ? 'Delete this directory backup schedule and its archives before deleting the directory.'
-                    : 'Delete this volume backup schedule and its archives before deleting the volume.',
-            ], 422);
-        }
 
         if ($storage instanceof LocalFileVolume) {
             $storage->deleteStorageOnServer();

app/Http/Controllers/Api/DatabasesController.php

@@ -4484,13 +4484,7 @@ public function delete_storage(Request $request): JsonResponse
             ], 422);
         }
 
-        if ($storage->scheduledBackups()->exists()) {
+        $storage->abortIfScheduledBackupsExist();
-            return response()->json([
-                'message' => $storage instanceof LocalFileVolume
-                    ? 'Delete this directory backup schedule and its archives before deleting the directory.'
-                    : 'Delete this volume backup schedule and its archives before deleting the volume.',
-            ], 422);
-        }
 
         if ($storage instanceof LocalFileVolume) {
             $storage->deleteStorageOnServer();

app/Http/Controllers/Api/ServicesController.php

@@ -2911,13 +2911,7 @@ public function delete_storage(Request $request): JsonResponse
             ], 422);
         }
 
-        if ($storage->scheduledBackups()->exists()) {
+        $storage->abortIfScheduledBackupsExist();
-            return response()->json([
-                'message' => $storage instanceof LocalFileVolume
-                    ? 'Delete this directory backup schedule and its archives before deleting the directory.'
-                    : 'Delete this volume backup schedule and its archives before deleting the volume.',
-            ], 422);
-        }
 
         if ($storage instanceof LocalFileVolume) {
             $storage->deleteStorageOnServer();

app/Models/LocalFileVolume.php

@@ -96,6 +96,13 @@ public function scheduledBackups(): MorphMany
         return $this->morphMany(ScheduledVolumeBackup::class, 'backupable');
     }
 
+    public function abortIfScheduledBackupsExist(): void
+    {
+        if ($this->scheduledBackups()->exists()) {
+            abort(422, 'Delete this directory backup schedule and its archives before deleting the directory.');
+        }
+    }
+
     public function loadStorageOnServer()
     {
         if ($this->is_host_file) {

app/Models/LocalPersistentVolume.php

@@ -56,6 +56,13 @@ public function scheduledBackups(): MorphMany
         return $this->morphMany(ScheduledVolumeBackup::class, 'backupable');
     }
 
+    public function abortIfScheduledBackupsExist(): void
+    {
+        if ($this->scheduledBackups()->exists()) {
+            abort(422, 'Delete this volume backup schedule and its archives before deleting the volume.');
+        }
+    }
+
     protected function customizeName($value)
     {
         return str($value)->trim()->value;

tests/Feature/VolumeBackupTest.php

@@ -37,6 +37,7 @@
 use Illuminate\Support\Facades\Schema;
 use Illuminate\Support\Facades\Storage;
 use Livewire\Livewire;
+use Symfony\Component\HttpKernel\Exception\HttpException;
 
 uses(RefreshDatabase::class);
 
@@ -1456,6 +1457,26 @@ function signInForVolumeBackups($testCase, Team $team): User
     expect($volume->fresh())->not->toBeNull();
 });
 
+it('aborts storage deletion when scheduled backups exist', function () {
+    $team = Team::factory()->create();
+    [$application, $volume] = createVolumeBackupApplication($team);
+    $directory = createApplicationBackupDirectory($application);
+
+    $volume->scheduledBackups()->create([
+        'team_id' => $team->id,
+        'frequency' => 'daily',
+    ]);
+    $directory->scheduledBackups()->create([
+        'team_id' => $team->id,
+        'frequency' => 'daily',
+    ]);
+
+    expect(fn () => $volume->abortIfScheduledBackupsExist())
+        ->toThrow(HttpException::class, 'Delete this volume backup schedule and its archives before deleting the volume.')
+        ->and(fn () => $directory->abortIfScheduledBackupsExist())
+        ->toThrow(HttpException::class, 'Delete this directory backup schedule and its archives before deleting the directory.');
+});
+
 it('deletes disabled volume backup archives before deleting their application', function () {
     Process::fake();
     Queue::fake();