increase test coverage (#117)

70% test coverage
remove socialite

app/Actions/StorageProvider/DeleteStorageProvider.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace App\Actions\StorageProvider;
+
+use App\Models\StorageProvider;
+use Exception;
+
+class DeleteStorageProvider
+{
+    /**
+     * @throws Exception
+     */
+    public function delete(StorageProvider $storageProvider): void
+    {
+        if ($storageProvider->backups()->exists()) {
+            throw new Exception('This storage provider is being used by a backup.');
+        }
+
+        $storageProvider->delete();
+    }
+}