new pipeline

lib/services/dataService.dart

@@ -5,11 +5,29 @@ import 'package:flutter/scheduler.dart';
 import 'package:mileograph_flutter/objects/objects.dart';
 import 'package:mileograph_flutter/services/apiService.dart'; // assumes you've moved HomepageStats + submodels to a separate file
 
+class _LegFetchOptions {
+  final int limit;
+  final String sortBy;
+  final int sortDirection;
+  final String? dateRangeStart;
+  final String? dateRangeEnd;
+
+  const _LegFetchOptions({
+    this.limit = 100,
+    this.sortBy = 'date',
+    this.sortDirection = 0,
+    this.dateRangeStart,
+    this.dateRangeEnd,
+  });
+}
+
 class DataService extends ChangeNotifier {
   final ApiService api;
 
   DataService({required this.api});
 
+  _LegFetchOptions _lastLegsFetch = const _LegFetchOptions();
+
   // Homepage Data
   HomepageStats? _homepageStats;
   HomepageStats? get homepageStats => _homepageStats;
@@ -89,6 +107,15 @@ class DataService extends ChangeNotifier {
     bool append = false,
   }) async {
     _isLegsLoading = true;
+    if (!append) {
+      _lastLegsFetch = _LegFetchOptions(
+        limit: limit,
+        sortBy: sortBy,
+        sortDirection: sortDirection,
+        dateRangeStart: dateRangeStart,
+        dateRangeEnd: dateRangeEnd,
+      );
+    }
     final buffer = StringBuffer(
         '?sort_direction=$sortDirection&sort_by=$sortBy&offset=$offset&limit=$limit');
     if (dateRangeStart != null && dateRangeStart.isNotEmpty) {
@@ -117,6 +144,16 @@ class DataService extends ChangeNotifier {
     }
   }
 
+  Future<void> refreshLegs() {
+    return fetchLegs(
+      limit: _lastLegsFetch.limit,
+      sortBy: _lastLegsFetch.sortBy,
+      sortDirection: _lastLegsFetch.sortDirection,
+      dateRangeStart: _lastLegsFetch.dateRangeStart,
+      dateRangeEnd: _lastLegsFetch.dateRangeEnd,
+    );
+  }
+
   Future<void> fetchHadTraction({int offset = 0, int limit = 100}) async {
     await fetchTraction(
       hadOnly: true,