优化

client/flutter/lib/providers/stats_provider.dart

@@ -0,0 +1,56 @@
+import 'package:flutter/material.dart';
+import 'package:sales_chat/models/stats.dart';
+import 'package:sales_chat/services/api_service.dart';
+
+class StatsProvider with ChangeNotifier {
+  final ApiService _apiService;
+
+  MyStats? _myStats;
+  List<RankingEntry> _ranking = [];
+  bool _isLoading = false;
+  String? _error;
+
+  StatsProvider(this._apiService);
+
+  MyStats? get myStats => _myStats;
+  List<RankingEntry> get ranking => _ranking;
+  bool get isLoading => _isLoading;
+  String? get error => _error;
+
+  /// Load the current user's stats
+  Future<void> loadMyStats() async {
+    _isLoading = true;
+    _error = null;
+    notifyListeners();
+
+    try {
+      _myStats = await _apiService.getMyStats();
+      _isLoading = false;
+      notifyListeners();
+    } catch (e) {
+      _error = 'Failed to load stats';
+      _isLoading = false;
+      notifyListeners();
+    }
+  }
+
+  /// Load the ranking list
+  Future<void> loadRanking({String period = 'monthly'}) async {
+    try {
+      _ranking = await _apiService.getRanking(period: period);
+      notifyListeners();
+    } catch (e) {
+      // Handle silently
+    }
+  }
+
+  void clearError() {
+    _error = null;
+    notifyListeners();
+  }
+
+  Future<void> refresh() async {
+    await loadMyStats();
+    await loadRanking();
+  }
+}