first commit

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();
+});
+