chore: rely on websockets for autosync if a websocket connection is open (#2672)

packages/snjs/lib/Application/Application.ts

@@ -137,9 +137,6 @@ import { TYPES } from './Dependencies/Types'
 import { RegisterApplicationServicesEvents } from './Dependencies/DependencyEvents'
 import { Result } from '@standardnotes/domain-core'
 
-/** How often to automatically sync, in milliseconds */
-const DEFAULT_AUTO_SYNC_INTERVAL = 30_000
-
 type LaunchCallback = {
   receiveChallenge: (challenge: Challenge) => void
 }
@@ -165,7 +162,6 @@ export class SNApplication implements ApplicationInterface, AppGroupManagedAppli
 
   private serviceObservers: ObserverRemover[] = []
   private managedSubscribers: ObserverRemover[] = []
-  private autoSyncInterval!: ReturnType<typeof setInterval>
 
   /** True if the result of deviceInterface.openDatabase yields a new database being created */
   private createdNewDatabase = false
@@ -463,7 +459,7 @@ export class SNApplication implements ApplicationInterface, AppGroupManagedAppli
           throw 'Application has been destroyed.'
         }
         await this.handleStage(ApplicationStage.LoadedDatabase_12)
-        this.beginAutoSyncTimer()
+        this.sync.beginAutoSyncTimer()
         await this.sync.sync({
           mode: SyncMode.DownloadFirst,
           source: SyncSource.External,
@@ -503,14 +499,6 @@ export class SNApplication implements ApplicationInterface, AppGroupManagedAppli
     }
   }
 
-  private beginAutoSyncTimer() {
-    this.autoSyncInterval = setInterval(() => {
-      const logger = this.dependencies.get<LoggerInterface>(TYPES.Logger)
-      logger.info('Syncing from autosync')
-      void this.sync.sync({ sourceDescription: 'Auto Sync' })
-    }, DEFAULT_AUTO_SYNC_INTERVAL)
-  }
-
   private async handleStage(stage: ApplicationStage) {
     await this.events.publishSync(
       {
@@ -743,9 +731,6 @@ export class SNApplication implements ApplicationInterface, AppGroupManagedAppli
   public deinit(mode: DeinitMode, source: DeinitSource): void {
     this.dealloced = true
 
-    clearInterval(this.autoSyncInterval)
-    ;(this.autoSyncInterval as unknown) = undefined
-
     for (const uninstallObserver of this.serviceObservers) {
       uninstallObserver()
     }

packages/snjs/lib/Application/Dependencies/Dependencies.ts

@@ -1331,6 +1331,15 @@ export class Dependencies {
       )
     })
 
+    this.factory.set(TYPES.WebSocketsService, () => {
+      return new WebSocketsService(
+        this.get<DiskStorageService>(TYPES.DiskStorageService),
+        this.options.webSocketUrl,
+        this.get<WebSocketApiService>(TYPES.WebSocketApiService),
+        this.get<InternalEventBus>(TYPES.InternalEventBus),
+      )
+    })
+
     this.factory.set(TYPES.SyncService, () => {
       return new SyncService(
         this.get<ItemManager>(TYPES.ItemManager),
@@ -1347,6 +1356,7 @@ export class Dependencies {
           sleepBetweenBatches: this.options.sleepBetweenBatches,
         },
         this.get<Logger>(TYPES.Logger),
+        this.get<WebSocketsService>(TYPES.WebSocketsService),
         this.get<InternalEventBus>(TYPES.InternalEventBus),
       )
     })
@@ -1390,15 +1400,6 @@ export class Dependencies {
       )
     })
 
-    this.factory.set(TYPES.WebSocketsService, () => {
-      return new WebSocketsService(
-        this.get<DiskStorageService>(TYPES.DiskStorageService),
-        this.options.webSocketUrl,
-        this.get<WebSocketApiService>(TYPES.WebSocketApiService),
-        this.get<InternalEventBus>(TYPES.InternalEventBus),
-      )
-    })
-
     this.factory.set(TYPES.WebSocketApiService, () => {
       return new WebSocketApiService(this.get<WebSocketServer>(TYPES.WebSocketServer))
     })

packages/snjs/lib/Application/Dependencies/DependencyEvents.ts

@@ -40,6 +40,7 @@ export function RegisterApplicationServicesEvents(container: Dependencies, event
   events.addEventHandler(container.get(TYPES.SubscriptionManager), ApplicationEvent.UserRolesChanged)
   events.addEventHandler(container.get(TYPES.SubscriptionManager), SessionEvent.Restored)
   events.addEventHandler(container.get(TYPES.SyncService), IntegrityEvent.IntegrityCheckCompleted)
+  events.addEventHandler(container.get(TYPES.SyncService), WebSocketsServiceEvent.ItemsChangedOnServer)
   events.addEventHandler(container.get(TYPES.UserService), AccountEvent.SignedInOrRegistered)
   events.addEventHandler(container.get(TYPES.VaultInviteService), ApplicationEvent.Launched)
   events.addEventHandler(container.get(TYPES.VaultInviteService), SyncEvent.ReceivedSharedVaultInvites)