Implemented way to fetch stations in batches

lib/services/flood_station_provider.dart

@@ -4,13 +4,31 @@ import '../model/flood_station.dart';
 import 'api.dart';
 
 class FloodStationProvider extends ChangeNotifier {
-  List<FloodStation> _allStations = [];
   FloodStation? selectedStation;
 
+  List<FloodStation> _allStations = [];
+
   List<FloodStation> get allStations => _allStations;
 
+  Future loadAllStationsInBatches({silent = false}) {
+    int offset = 0;
+    return Future.doWhile(() async {
+      final stations = await Api.fetchStationsByRange(500, offset);
+      if (stations.isNotEmpty) {
+        _allStations.addAll(stations);
+        if (!silent) {
+          notifyListeners();
+        }
+        offset += 500;
+        return true;
+      } else {
+        return false;
+      }
+    });
+  }
+
   Future loadAllStations({silent = false}) {
-    return Api.fetchStations().then(
+    return Api.fetchAllStations().then(
       (value) {
         _allStations = value;
         if (!silent) {