todos-contra-el-fuego-mobile/lib/models/fireNotificationsPersist.dart

import 'dart:async';
import 'dart:convert';

import 'package:comunes_flutter/comunes_flutter.dart';
import 'package:shared_preferences/src/shared_preferences_legacy.dart';

import '../globals.dart' as globals;
import 'fireNotification.dart';

const String fireNotificationKey = 'fireNotifications';

Future<List<FireNotification>> loadFireNotifications() async {
  return globals.prefs.then((SharedPreferences prefs) {
    final List<String>? FireNotifications = prefs.getStringList(fireNotificationKey);
    final List<FireNotification> persistedList = <FireNotification>[];
    for (final String notificationString in (FireNotifications ?? <String>[])) {
      final Map<String, dynamic> notificationMap =
          json.decode(notificationString) as Map<String, dynamic>;
      persistedList.add(FireNotification.fromJson(notificationMap));
    }
    return persistedList;
  });
}

void persistFireNotifications(List<FireNotification> notif) {
  // print('Persisting $notif');
  globals.prefs.then((SharedPreferences prefs) {
    final List<String> notifAsString = <String>[];
    notif.where(notNull).toList().forEach((FireNotification notification) {
      notifAsString.add(json.encode(notification.toJson()));
    });
    prefs.setStringList(fireNotificationKey, notifAsString);
  });
}