From 16c3a755ee633efa1d8e9b7be0533c588b94b38b Mon Sep 17 00:00:00 2001
From: "Patrik J. Braun" <bra.patrik@gmail.com>
Date: Sun, 18 Nov 2018 22:56:05 +0100
Subject: [PATCH] improving date structure update handling

---
 backend/model/sql/SQLConnection.ts            |  6 +++---
 common/DataStructureVersion.ts                |  1 +
 frontend/app/gallery/cache.gallery.service.ts | 11 +++++++++++
 3 files changed, 15 insertions(+), 3 deletions(-)
 create mode 100644 common/DataStructureVersion.ts

diff --git a/backend/model/sql/SQLConnection.ts b/backend/model/sql/SQLConnection.ts
index ee660a1f..ceeae65d 100644
--- a/backend/model/sql/SQLConnection.ts
+++ b/backend/model/sql/SQLConnection.ts
@@ -13,11 +13,11 @@ import {VersionEntity} from './enitites/VersionEntity';
 import {Logger} from '../../Logger';
 import {MediaEntity} from './enitites/MediaEntity';
 import {VideoEntity} from './enitites/VideoEntity';
+import {DataStructureVersion} from '../../../common/DataStructureVersion';
 
 
 export class SQLConnection {
 
-  private static VERSION = 2;
 
   constructor() {
   }
@@ -92,14 +92,14 @@ export class SQLConnection {
       version = await connection.getRepository(VersionEntity).findOne();
     } catch (ex) {
     }
-    if (version && version.version === SQLConnection.VERSION) {
+    if (version && version.version === DataStructureVersion) {
       return;
     }
     Logger.info('Updating database scheme');
     if (!version) {
       version = new VersionEntity();
     }
-    version.version = SQLConnection.VERSION;
+    version.version = DataStructureVersion;
 
 
     await connection.dropDatabase();
diff --git a/common/DataStructureVersion.ts b/common/DataStructureVersion.ts
new file mode 100644
index 00000000..d951029d
--- /dev/null
+++ b/common/DataStructureVersion.ts
@@ -0,0 +1 @@
+export const DataStructureVersion = 2;
diff --git a/frontend/app/gallery/cache.gallery.service.ts b/frontend/app/gallery/cache.gallery.service.ts
index 9fd5715d..75b28bb5 100644
--- a/frontend/app/gallery/cache.gallery.service.ts
+++ b/frontend/app/gallery/cache.gallery.service.ts
@@ -6,6 +6,7 @@ import {Config} from '../../../common/config/public/Config';
 import {AutoCompleteItem, SearchTypes} from '../../../common/entities/AutoCompleteItem';
 import {SearchResultDTO} from '../../../common/entities/SearchResultDTO';
 import {MediaDTO} from '../../../common/entities/MediaDTO';
+import {DataStructureVersion} from '../../../common/DataStructureVersion';
 
 interface CacheItem<T> {
   timestamp: number;
@@ -20,6 +21,16 @@ export class GalleryCacheService {
   private static INSTANT_SEARCH_PREFIX = 'instant_search:';
   private static SEARCH_PREFIX = 'search:';
   private static SEARCH_TYPE_PREFIX = ':type:';
+  private static VERSION = 'version';
+
+  constructor() {
+    const version = parseInt(localStorage.getItem(GalleryCacheService.VERSION), 10) || 0;
+    if (version !== DataStructureVersion) {
+      localStorage.clear();
+      localStorage.setItem(GalleryCacheService.VERSION, DataStructureVersion.toString());
+    }
+
+  }
 
 
   public getAutoComplete(text: string): Array<AutoCompleteItem> {