Fixes issue with failing syncs

LeStorage/StoreCenter.swift

@@ -177,11 +177,7 @@ public class StoreCenter {
 
     @objc fileprivate func _launchSynchronization() {
         Task {
-            do {
-                try await self.synchronizeLastUpdates()
-            } catch {
-                Logger.error(error)
-            }
+            await self.synchronizeLastUpdates()
         }
     }
     
@@ -579,22 +575,24 @@ public class StoreCenter {
     }
 
     /// Basically asks the server for new content
-    public func synchronizeLastUpdates() async throws {
+    @discardableResult public func synchronizeLastUpdates() async -> Error? {
         
+        Logger.log("synchronizeLastUpdates: self.synchronizesData: \(self.synchronizesData) / self.isAuthenticated = \(self.isAuthenticated) / self.useSynchronization = \(self.useSynchronization)")
         guard self.isAuthenticated, self.useSynchronization else {
-            return
+            return nil
         }
         guard !self.synchronizesData else {
-//            Logger.log("*** blocked sync")
             self.wantsToSynchronize = true
-            return
+            return nil
         }
+        Logger.log("synchronizeLastUpdates started...")
         
         self.synchronizesData = true
         self.wantsToSynchronize = false
 
         let lastSync = self._settingsStorage.item.lastSynchronization
 
+        do {
             let syncGetCollection: ApiCallCollection<GetSyncData> = try self.apiCallCollection()
             if await syncGetCollection.hasPendingCalls() == false {
                 Logger.log("*** START sync: \(lastSync)")
@@ -602,17 +600,13 @@ public class StoreCenter {
                 getSyncData.date = lastSync
                 try await syncGetCollection.sendGetRequest(instance: getSyncData)
             }
-        
-//        if await syncGetCollection.hasPendingCalls() {
-//            await syncGetCollection.rescheduleImmediately()
-//            Logger.log("=> reschedule")
-//        } else {
-//            Logger.log("=> send GET")
-//            let getSyncData = GetSyncData()
-//            getSyncData.date = lastSync
-//            try await syncGetCollection.sendGetRequest(instance: getSyncData)
-//        }
-        
+        } catch {
+            self.synchronizesData = false
+            Logger.error(error)
+            return error
+        }
+        self.synchronizesData = false
+        return nil
     }
 
     @discardableResult func testSynchronizeOnceAsync() async throws -> Data {
@@ -683,11 +677,7 @@ public class StoreCenter {
         
         self.synchronizesData = false
         if self.wantsToSynchronize {
-            do {
-                try await self.synchronizeLastUpdates()
-            } catch {
-                Logger.error(error)
-            }
+            await self.synchronizeLastUpdates()
         }
 
 //        Logger.log(">>> SYNC ENDED")

LeStorage/WebSocketManager.swift

@@ -71,12 +71,7 @@ class WebSocketManager: ObservableObject {
                     }
                     
                     Task {
-                        do {
-//                            Logger.log("Websocket notif, sync...")
-                            try await self.storeCenter.synchronizeLastUpdates()
-                        } catch {
-                            Logger.error(error)
-                        }
+                        await self.storeCenter.synchronizeLastUpdates()
                     }
                     
                 case .data(let data):