g1_helper.dart

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

import 'package:durt/durt.dart';

Random createRandom() {
  try {
    return Random.secure();
  } catch (e) {
    return Random();
  }
}

Uint8List generateUintSeed() {
  final Random random = createRandom();
  return Uint8List.fromList(List<int>.generate(32, (_) => random.nextInt(256)));
}

String seedToString(Uint8List seed) {
  final Uint8List seedsBytes = Uint8List.fromList(seed);
  final String encoded = json.encode(seedsBytes.toList());
  return encoded;
}

CesiumWallet generateCesiumWallet(Uint8List seed) {
  return CesiumWallet.fromSeed(seed);
}

Uint8List seedFromString(String sString) {
  final List<dynamic> list = json.decode(sString) as List<dynamic>;
  final Uint8List bytes =
      Uint8List.fromList(list.map((dynamic e) => e as int).toList());
  return bytes;
}

String generateSalt(int length) {
  final Random random = createRandom();
  const String charset =
      '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
  return List<String>.generate(
      length, (int index) => charset[random.nextInt(charset.length)]).join();
}

String parseHost(String endpointUnParsed) {
  final List<String> parts = endpointUnParsed.split(' ');
  // FIXME (vjrj): figure out if exists a way to detect http or https
  const String protocol = 'https';
  final String lastPart = parts.removeLast();
  String path =
      RegExp(r'^\/[a-zA-Z0-9\-\/]+$').hasMatch(lastPart) ? lastPart : '';

  final String nextToLast = parts[parts.length - 1];
  final String port = lastPart == ''
      ? (RegExp(r'^\/[0-9]$').hasMatch(lastPart) ? lastPart : '443')
      : RegExp(r'^\/[0-9]$').hasMatch(nextToLast)
          ? nextToLast
          : '443';
  final List<String> hostSplited = parts[1].split('/');
  // Process hosts like monnaie-libre.ortie.org/bma/
  final String host = hostSplited[0];
  path = path.isEmpty
      ? ((hostSplited.length > 1 && hostSplited[1].isNotEmpty
                  ? hostSplited[1]
                  : '')
              .isNotEmpty
          ? hostSplited.length > 1 && hostSplited[1].isNotEmpty
              ? '/${hostSplited[1]}'
              : ''
          : path)
      : path;
  //final bool hasIp =
  //  RegExp(r'\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}').hasMatch(parts[2]);
//  final String port = hasIp ? parts[3] : parts[2];
  //final int pathIndex = hasIp ? 4 : 3;
  //final String path = parts.length > pathIndex ? parts[pathIndex] : '';
  final String endpoint = '$protocol://$host:$port$path'.trim();
  return endpoint;
}