initial import

2026-07-06 18:01:38 +02:00
commit 8ce435e298
122 changed files with 5392 additions and 0 deletions
@@ -0,0 +1,85 @@
+import 'dart:convert';
+import 'package:shared_preferences/shared_preferences.dart';
+import '../models/event.dart';
+
+class ScheduleCacheService {
+  String _eventsKey(String account) => 'cached_events_$account';
+  String _agegroupKey(String account) => 'filters_agegroup_$account';
+  String _subgroupKey(String account) => 'filters_subgroup_$account';
+  String _timestampKey(String account) => 'cached_events_timestamp_$account';
+
+  Future<void> saveEvents(String account, List<Event> events) async {
+    final prefs = await SharedPreferences.getInstance();
+    final jsonList = events.map((e) => e.toJson()).toList();
+    await prefs.setString(_eventsKey(account), jsonEncode(jsonList));
+    await prefs.setInt(
+      _timestampKey(account),
+      DateTime.now().millisecondsSinceEpoch,
+    );
+  }
+
+  Future<List<Event>?> loadEvents(String account) async {
+    final prefs = await SharedPreferences.getInstance();
+    final jsonString = prefs.getString(_eventsKey(account));
+    if (jsonString == null) return null;
+    try {
+      final jsonList = jsonDecode(jsonString) as List<dynamic>;
+      return jsonList
+          .map((json) => Event.fromJson(json as Map<String, dynamic>))
+          .toList();
+    } catch (e) {
+      return null;
+    }
+  }
+
+  Future<DateTime?> getLastUpdated(String account) async {
+    final prefs = await SharedPreferences.getInstance();
+    final timestamp = prefs.getInt(_timestampKey(account));
+    if (timestamp == null) return null;
+    return DateTime.fromMillisecondsSinceEpoch(timestamp);
+  }
+
+  Future<void> saveFilters(
+    String account,
+    String? agegroup,
+    String? subgroup,
+  ) async {
+    final prefs = await SharedPreferences.getInstance();
+    if (agegroup != null) {
+      await prefs.setString(_agegroupKey(account), agegroup);
+    } else {
+      await prefs.remove(_agegroupKey(account));
+    }
+    if (subgroup != null) {
+      await prefs.setString(_subgroupKey(account), subgroup);
+    } else {
+      await prefs.remove(_subgroupKey(account));
+    }
+  }
+
+  Future<(String?, String?)> loadFilters(String account) async {
+    final prefs = await SharedPreferences.getInstance();
+    return (
+      prefs.getString(_agegroupKey(account)),
+      prefs.getString(_subgroupKey(account)),
+    );
+  }
+
+  Future<void> clearCache(String account) async {
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.remove(_eventsKey(account));
+    await prefs.remove(_timestampKey(account));
+    await prefs.remove(_agegroupKey(account));
+    await prefs.remove(_subgroupKey(account));
+  }
+
+  Future<void> clearAllCache() async {
+    final prefs = await SharedPreferences.getInstance();
+    final keys = prefs.getKeys().where((k) => k.startsWith('cached_events_') ||
+        k.startsWith('filters_') ||
+        k.startsWith('cached_events_timestamp_'));
+    for (final key in keys) {
+      await prefs.remove(key);
+    }
+  }
+}