From ed3b4e953b5d6b2531dad5065256ab5a95ad3b97 Mon Sep 17 00:00:00 2001
From: Andreas Gassmann <andreas@andreasgassmann.ch>
Date: Wed, 18 Dec 2019 10:07:01 +0000
Subject: [PATCH] feat(storage): add localstorage

---
 src/client/storage/LocalStorage.ts    |  2 +-
 src/client/storage/StorageProvider.ts | 15 +++++++++++++++
 2 files changed, 16 insertions(+), 1 deletion(-)
 create mode 100644 src/client/storage/StorageProvider.ts

diff --git a/src/client/storage/LocalStorage.ts b/src/client/storage/LocalStorage.ts
index 1027e5a10..af0930881 100644
--- a/src/client/storage/LocalStorage.ts
+++ b/src/client/storage/LocalStorage.ts
@@ -2,7 +2,7 @@ import { Storage } from './Storage'
 
 export class LocalStorage implements Storage {
   public async isSupported(): Promise<boolean> {
-    return Promise.resolve(window && !!window.localStorage)
+    return Promise.resolve(typeof window !== 'undefined' && !!window.localStorage)
   }
 
   public async get(key: string): Promise<any> {
diff --git a/src/client/storage/StorageProvider.ts b/src/client/storage/StorageProvider.ts
new file mode 100644
index 000000000..72003c796
--- /dev/null
+++ b/src/client/storage/StorageProvider.ts
@@ -0,0 +1,15 @@
+import { FileStorage } from "./FileStorage"
+import { LocalStorage } from "./LocalStorage"
+import { Storage } from "./Storage"
+
+export async function getStorage(): Promise<Storage> {
+    const local: LocalStorage = new LocalStorage()
+    const file: FileStorage = new FileStorage()
+    if (await local.isSupported()) {
+        return local
+    } else if (await file.isSupported()) {
+        return file
+    } else {
+        throw new Error('no storage type supported')
+    }
+}
\ No newline at end of file