cake_wallet/lib/src/domain/common/fs_migration.dart

import 'dart:io';
import 'dart:convert';
import 'package:cake_wallet/src/domain/common/contact.dart';
import 'package:cake_wallet/src/domain/common/crypto_currency.dart';
import 'package:cake_wallet/src/domain/common/wallet_info.dart';
import 'package:cake_wallet/src/domain/common/wallet_type.dart';
import 'package:cake_wallet/src/domain/exchange/trade.dart';
import 'package:flutter/foundation.dart';
import 'package:hive/hive.dart';
import 'package:path_provider/path_provider.dart';

const reservedNames = ["flutter_assets", "wallets", "db"];

Future<void> migrate_android_v1() async {
  final appDocDir = await getApplicationDocumentsDirectory();

  await migrate_hives(appDocDir: appDocDir);
  await migrate_wallets(appDocDir: appDocDir);
}

Future<void> migrate_ios_v1() async {
  final appDocDir = await getApplicationDocumentsDirectory();
}

Future<void> migrate_hives({Directory appDocDir}) async {
  final dbDir = Directory('${appDocDir.path}/db');
  final files = List<File>();

  appDocDir.listSync().forEach((FileSystemEntity item) {
    final ext = item.path.split('.').last;

    if (item is File && (ext == "hive" || ext == "lock")) {
      files.add(item);
    }
  });

  if (!dbDir.existsSync()) {
    dbDir.createSync();
  }

  files.forEach((File hive) {
    final name = hive.path.split('/').last;
    hive.copySync('${dbDir.path}/$name');
    hive.deleteSync();
  });
}

Future<void> migrate_wallets({Directory appDocDir}) async {
  final walletsDir = Directory('${appDocDir.path}/wallets');
  final moneroWalletsDir = Directory('${walletsDir.path}/monero');
  final dirs = List<Directory>();

  appDocDir.listSync().forEach((FileSystemEntity item) {
    final name = item.path.split('/').last;

    if (item is Directory && !reservedNames.contains(name)) {
      dirs.add(item);
    }
  });

  if (!moneroWalletsDir.existsSync()) {
    await moneroWalletsDir.create(recursive: true);
  }

  dirs.forEach((Directory dir) {
    final name = dir.path.split('/').last;
    final newDir = Directory('${moneroWalletsDir.path}/$name');
    newDir.createSync();

    dir.listSync().forEach((file) {
      if (file is File) {
        final fileName = file.path.split('/').last;
        file.copySync('${newDir.path}/$fileName');
        file.deleteSync();
      }
    });

    dir.deleteSync();
  });
}

Future<void> migrate_ios_wallet_info(
    {@required Directory appDocDir,
    @required Box<WalletInfo> walletsInfo}) async {
  final walletsDir = Directory('${appDocDir.path}/wallets');
  final moneroWalletsDir = Directory('${walletsDir.path}/monero');

  moneroWalletsDir.listSync().forEach((item) async {
    try {
      if (item is Directory) {
        final name = item.path.split('/').last;
        final configFile = File('${item.path}/$name.json');
        final config =
            json.decode(configFile.readAsStringSync()) as Map<String, dynamic>;
        final isRecovery = config["isRecovery"] as bool ?? false;
        final id =
            walletTypeToString(WalletType.monero).toLowerCase() + '_' + name;
        final walletInfo =
            WalletInfo(id: id, name: name, isRecovery: isRecovery);

        await walletsInfo.add(walletInfo);
      }
    } catch (e) {
      print(e.toString());
    }
  });
}

Future<void> migrate_ios_trades_list(
    {@required Directory appDocDir, @required Box<Trade> trades}) async {
  final adderessBookJSON = File('${appDocDir.path}/trades_list.json');
  final List<dynamic> trades =
      json.decode(adderessBookJSON.readAsStringSync()) as List<dynamic>;
}

Future<void> migrate_ios_address_book(
    {@required Directory appDocDir, @required Box<Contact> contacts}) async {
  final adderessBookJSON = File('${appDocDir.path}/address_book.json');
  final List<dynamic> addresses =
      json.decode(adderessBookJSON.readAsStringSync()) as List<dynamic>;

  addresses.forEach((dynamic item) async {
    final _item = item as Map<String, dynamic>;
    final type = _item["type"] as String;
    final address = _item["address"] as String;
    final name = _item["name"] as String;
    final contact = Contact(
        address: address, name: name, type: CryptoCurrency.fromString(type));

    await contacts.add(contact);
  });
}