Fix connections background update making too many fast calls.

lib/screens/contacts_screen.dart

@@ -94,7 +94,7 @@ class _ContactsScreenState extends State<ContactsScreen> {
             if (nss.connectionUpdateStatus.value) {
               return;
             }
-            manager.updateAllContacts();
+            manager.updateAllContacts(false);
             return;
           },
           child: Column(
@@ -129,7 +129,8 @@ class _ContactsScreenState extends State<ContactsScreen> {
                     padding: const EdgeInsets.all(8.0),
                     child: StatusAndRefreshButton(
                       valueListenable: nss.connectionUpdateStatus,
-                      refreshFunction: () async => manager.updateAllContacts(),
+                      refreshFunction: () async =>
+                          manager.updateAllContacts(false),
                     ),
                   )
                 ],

lib/services/connections_manager.dart

@@ -154,7 +154,7 @@ class ConnectionsManager extends ChangeNotifier {
     return conRepo.getMyContacts();
   }
 
-  Future<void> updateAllContacts() async {
+  Future<void> updateAllContacts(bool backgroundUpdate) async {
     _logger.fine('Updating all contacts');
     _lastUpdateStatus = 'Updating';
     final persistentInfo = getIt<ActiveProfileSelector<PersistentInfoService>>()
@@ -163,6 +163,9 @@ class ConnectionsManager extends ChangeNotifier {
     final originalTime = persistentInfo.lastMyConnectionsUpdate;
     await persistentInfo.updateLastMyConnectionUpdate(DateTime.now());
     notifyListeners();
+    final delay = backgroundUpdate
+        ? const Duration(minutes: 5)
+        : const Duration(seconds: 10);
     try {
       final client = RelationshipsClient(profile);
       final results = <String, Connection>{};
@@ -186,7 +189,7 @@ class ConnectionsManager extends ChangeNotifier {
         }, onError: (error) {
           _logger.severe('Error getting followers data: $error');
         });
-        await Future.delayed(Duration.zero);
+        await Future.delayed(delay);
       }
 
       moreResults = true;
@@ -210,7 +213,7 @@ class ConnectionsManager extends ChangeNotifier {
         }, onError: (error) {
           _logger.severe('Error getting followers data: $error');
         });
-        await Future.delayed(Duration.zero);
+        await Future.delayed(delay);
       }
 
       for (final noLongerFollowed in originalContacts) {

lib/update_timer_initialization.dart

@@ -41,7 +41,7 @@ Future<void> executeUpdatesForProfile(Profile profile) async {
     if (dt >= _connectionsRefreshInterval) {
       await getIt<ActiveProfileSelector<ConnectionsManager>>()
           .getForProfile(profile)
-          .withResultAsync((m) async => await m.updateAllContacts())
+          .withResultAsync((m) async => await m.updateAllContacts(true))
           .withError((error) {
         _logger.severe('Error running connections update: $error');
       });