Stop ProfileManager when app is being backgrounded

This should prevent RUNNINGBOARD 0xdead10cc crashes related to
ProfileManager and app background states.

Signed-off-by: Daniel D’Aquino <daniel@daquino.me>

damus/Core/Networking/NostrNetworkManager/NostrNetworkManager.swift

@@ -47,7 +47,7 @@ class NostrNetworkManager {
         self.profilesManager = ProfilesManager(subscriptionManager: reader, ndb: delegate.ndb)
     }
     
-    // MARK: - Control functions
+    // MARK: - Control and lifecycle functions
     
     /// Connects the app to the Nostr network
     func connect() {
@@ -60,6 +60,12 @@ class NostrNetworkManager {
         self.pool.disconnect()
     }
     
+    func close() async {
+        await self.reader.cancelAllTasks()
+        await self.profilesManager.stop()
+        pool.close()
+    }
+    
     func ping() {
         self.pool.ping()
     }
@@ -137,14 +143,6 @@ class NostrNetworkManager {
         print("damus-donation donating...")
         WalletConnect.pay(url: nwc, pool: self.pool, post: self.postbox, invoice: invoice, zap_request: nil, delay: nil)
     }
-    
-    
-    // MARK: - App lifecycle functions
-    
-    func close() async {
-        await self.reader.cancelAllTasks()
-        pool.close()
-    }
 }
 
 

damus/Core/Networking/NostrNetworkManager/ProfilesManager.swift

@@ -49,9 +49,11 @@ extension NostrNetworkManager {
             }
         }
         
-        func stop() {
+        func stop() async {
             self.subscriptionSwitcherTask?.cancel()
             self.profileListenerTask?.cancel()
+            try? await self.subscriptionSwitcherTask?.value
+            try? await self.profileListenerTask?.value
         }
         
         private func restartProfileListenerTask() {