first commit

lib/providers/background_sync_provider.dart

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+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import '../services/background_sync_service.dart';
+
+// BackgroundSyncService Provider
+final backgroundSyncServiceProvider = Provider<BackgroundSyncService>((ref) {
+  final service = BackgroundSyncService();
+  
+  // 当 Provider 被销毁时，停止服务
+  ref.onDispose(() {
+    service.stop();
+  });
+  
+  return service;
+});
+
+// 后台同步状态 Provider
+final backgroundSyncStatusProvider = StateProvider<bool>((ref) {
+  return false;
+});
+

lib/providers/statistics_provider.dart

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+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import '../models/daily_stats.dart';
+import '../models/app_usage.dart';
+import '../services/statistics_service.dart';
+
+// StatisticsService Provider
+final statisticsServiceProvider = Provider<StatisticsService>((ref) {
+  return StatisticsService();
+});
+
+// 今日统计 Provider
+final todayStatsProvider = FutureProvider<DailyStats>((ref) async {
+  final service = ref.read(statisticsServiceProvider);
+  return await service.getTodayStats();
+});
+
+// 本周统计 Provider
+final weekStatsProvider = FutureProvider<List<DailyStats>>((ref) async {
+  final service = ref.read(statisticsServiceProvider);
+  return await service.getWeekStats();
+});
+
+// 本月统计 Provider
+final monthStatsProvider = FutureProvider<List<DailyStats>>((ref) async {
+  final service = ref.read(statisticsServiceProvider);
+  return await service.getMonthStats();
+});
+
+// 今日统计列表 Provider（用于日视图，只返回今日数据）
+final todayStatsListProvider = FutureProvider<List<DailyStats>>((ref) async {
+  final service = ref.read(statisticsServiceProvider);
+  final todayStats = await service.getTodayStats();
+  return [todayStats];
+});
+
+// 今日 Top 应用 Provider
+final todayTopAppsProvider = FutureProvider<List<AppUsage>>((ref) async {
+  final service = ref.read(statisticsServiceProvider);
+  final now = DateTime.now();
+  final startOfDay = DateTime(now.year, now.month, now.day);
+  final endOfDay = startOfDay.add(const Duration(days: 1));
+  return await service.getTopApps(
+    startTime: startOfDay,
+    endTime: endOfDay,
+    limit: 5,
+  );
+});
+
+// 刷新今日统计 Provider
+final refreshTodayStatsProvider = FutureProvider.family<DailyStats, void>((ref, _) async {
+  final service = ref.read(statisticsServiceProvider);
+  return await service.refreshTodayStats();
+});
+

lib/providers/time_tracking_provider.dart

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+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import '../services/time_tracking_service.dart';
+
+// TimeTrackingService Provider
+final timeTrackingServiceProvider = Provider<TimeTrackingService>((ref) {
+  return TimeTrackingService();
+});
+
+// 权限状态 Provider
+final permissionStatusProvider = FutureProvider<bool>((ref) async {
+  final service = ref.read(timeTrackingServiceProvider);
+  return await service.hasPermission();
+});
+
+// 后台追踪状态 Provider
+final backgroundTrackingStatusProvider = FutureProvider<bool>((ref) async {
+  final service = ref.read(timeTrackingServiceProvider);
+  return await service.isBackgroundTrackingActive();
+});
+