part of 'data_service.dart';

extension DataServiceNotifications on DataService {
  Future<void> fetchNotifications() async {
    _isNotificationsLoading = true;
    try {
      final json = await api.get('/notifications');
      List<dynamic>? list;
      if (json is List) {
        list = json;
      } else if (json is Map) {
        for (final key in ['notifications', 'data', 'items']) {
          final value = json[key];
          if (value is List) {
            list = value;
            break;
          }
        }
      }
      final parsed = list
          ?.whereType<Map<String, dynamic>>()
          .map(UserNotification.fromJson)
          .where((n) => !n.dismissed && n.channel.toLowerCase() != 'web')
          .toList();

      if (parsed != null) {
        parsed.sort((a, b) {
          final aTs = a.createdAt?.millisecondsSinceEpoch ?? 0;
          final bTs = b.createdAt?.millisecondsSinceEpoch ?? 0;
          return bTs.compareTo(aTs);
        });
        _notifications = parsed;
      } else {
        _notifications = [];
      }
    } catch (e) {
      debugPrint('Failed to fetch notifications: $e');
      _notifications = [];
    } finally {
      _isNotificationsLoading = false;
      _notifyAsync();
    }
  }

  Future<void> dismissNotifications(List<int> notificationIds) async {
    if (notificationIds.isEmpty) return;
    try {
      await api.put('/notifications/dismiss', {
        "notification_ids": notificationIds,
        "payload": {"dismissed": true},
      });
      _notifications = _notifications
          .where((n) => !notificationIds.contains(n.id))
          .toList();
    } catch (e) {
      debugPrint('Failed to dismiss notifications: $e');
      rethrow;
    } finally {
      _notifyAsync();
    }
  }
}