Implement data sync and cleanup

lib/providers/user_provider.dart

@@ -3,8 +3,8 @@ import 'package:hive_flutter/hive_flutter.dart';
 import '../models/user_profile.dart';
 import '../models/cycle_entry.dart';
 
-import 'package:uuid/uuid.dart';
 import '../services/cycle_service.dart';
+import '../services/sync_service.dart';
 
 /// Provider for the user profile
 final userProfileProvider =
@@ -66,6 +66,7 @@ final cycleEntriesProvider =
 class CycleEntriesNotifier extends StateNotifier<List<CycleEntry>> {
   CycleEntriesNotifier() : super([]) {
     _loadEntries();
+    syncData(); // Auto-sync on load
   }
 
   void _loadEntries() {
@@ -77,18 +78,21 @@ class CycleEntriesNotifier extends StateNotifier<List<CycleEntry>> {
     final box = Hive.box<CycleEntry>('cycle_entries');
     await box.put(entry.id, entry);
     _loadEntries();
+    _push();
   }
 
   Future<void> updateEntry(CycleEntry entry) async {
     final box = Hive.box<CycleEntry>('cycle_entries');
     await box.put(entry.id, entry);
     _loadEntries();
+    _push();
   }
 
   Future<void> deleteEntry(String id) async {
     final box = Hive.box<CycleEntry>('cycle_entries');
     await box.delete(id);
     _loadEntries();
+    _push();
   }
 
   Future<void> deleteEntriesForMonth(int year, int month) async {
@@ -101,63 +105,52 @@ class CycleEntriesNotifier extends StateNotifier<List<CycleEntry>> {
     }
     await box.deleteAll(keysToDelete);
     _loadEntries();
+    _push();
   }
 
   Future<void> clearEntries() async {
     final box = Hive.box<CycleEntry>('cycle_entries');
     await box.clear();
     state = [];
+    _push();
   }
 
-  Future<void> generateExampleData(String userId) async {
-    await clearEntries();
-    final box = Hive.box<CycleEntry>('cycle_entries');
-    final today = DateTime.now();
+  // Sync Logic
 
-    // Generate 3 past cycles (~28 days each)
-    DateTime cycleStart = today.subtract(const Duration(days: 84)); // 3 * 28
+  Future<void> syncData() async {
+    await _pull();
+    // After pull, we might want to push any local changes not in remote?
+    // For now, simpler consistency: Pull then Push current state?
+    // Or just Pull. Push happens on edit.
+    // Let's just Pull.
+  }
 
-    while (cycleStart.isBefore(today)) {
-      // Create Period (5 days)
-      for (int i = 0; i < 5; i++) {
-        final date = cycleStart.add(Duration(days: i));
-        if (date.isAfter(today)) break;
-
-        final isHeavy = i == 1 || i == 2;
-        final entry = CycleEntry(
-          id: const Uuid().v4(),
-          date: date,
-          isPeriodDay: true,
-          flowIntensity: isHeavy ? FlowIntensity.heavy : FlowIntensity.medium,
-          mood: i == 1 ? MoodLevel.sad : null,
-          crampIntensity: i == 0 ? 3 : null,
-          hasHeadache: i == 0,
-          createdAt: date,
-          updatedAt: date,
-        );
-        await box.put(entry.id, entry);
-      }
-
-      // Add random ovulation symptoms near day 14
-      final ovulationDay = cycleStart.add(const Duration(days: 14));
-      if (ovulationDay.isBefore(today)) {
-        final entry = CycleEntry(
-          id: const Uuid().v4(),
-          date: ovulationDay,
-          isPeriodDay: false,
-          energyLevel: 4, // High energy
-          mood: MoodLevel.veryHappy,
-          createdAt: ovulationDay,
-          updatedAt: ovulationDay,
-        );
-        await box.put(entry.id, entry);
-      }
-
-      cycleStart = cycleStart.add(const Duration(days: 28));
+  Future<void> _push() async {
+    final userBox = Hive.box<UserProfile>('user_profile');
+    final user = userBox.get('current_user');
+    if (user != null) {
+      await SyncService().pushSyncData(user.id, state);
     }
-
-    _loadEntries();
   }
+
+  Future<void> _pull() async {
+    final userBox = Hive.box<UserProfile>('user_profile');
+    final user = userBox.get('current_user');
+    if (user == null) return;
+
+    final remoteEntries = await SyncService().pullSyncData(user.id);
+    if (remoteEntries.isNotEmpty) {
+      final box = Hive.box<CycleEntry>('cycle_entries');
+      // Simple merge: Remote wins or Union?
+      // Union: Upsert all.
+      for (var entry in remoteEntries) {
+        await box.put(entry.id, entry);
+      }
+      _loadEntries();
+    }
+  }
+
+  // Example data generation removed
 }
 
 /// Computed provider for current cycle info