veilidchat/lib/tools/json_tools.dart

import 'dart:convert';
import 'dart:typed_data';

T jsonDecodeBytes<T>(T Function(dynamic) fromJson, Uint8List data) =>
    fromJson(jsonDecode(utf8.decode(data)));

Uint8List jsonEncodeBytes(Object? object,
        {Object? Function(Object?)? toEncodable}) =>
    Uint8List.fromList(
        utf8.encode(jsonEncode(object, toEncodable: toEncodable)));

Future<Uint8List> jsonUpdateBytes<T>(T Function(dynamic) fromJson,
    Uint8List oldBytes, Future<T> Function(T) update) async {
  final oldObj = fromJson(jsonDecode(utf8.decode(oldBytes)));
  final newObj = await update(oldObj);
  return jsonEncodeBytes(newObj);
}

Future<Uint8List> Function(Uint8List) jsonUpdate<T>(
        T Function(dynamic) fromJson, Future<T> Function(T) update) =>
    (oldBytes) => jsonUpdateBytes(fromJson, oldBytes, update);

T Function(Object?) genericFromJson<T>(
        T Function(Map<String, dynamic>) fromJsonMap) =>
    (json) => fromJsonMap(json! as Map<String, dynamic>);