cake_wallet/lib/store/settings_store.dart

import 'dart:io';

import 'package:cake_wallet/bitcoin/bitcoin.dart';
import 'package:cake_wallet/entities/exchange_api_mode.dart';
import 'package:cake_wallet/entities/pin_code_required_duration.dart';
import 'package:cake_wallet/entities/preferences_key.dart';
import 'package:cw_core/transaction_priority.dart';
import 'package:cake_wallet/themes/theme_base.dart';
import 'package:cake_wallet/themes/theme_list.dart';
import 'package:device_info_plus/device_info_plus.dart';
import 'package:flutter/material.dart';
import 'package:hive/hive.dart';
import 'package:mobx/mobx.dart';
import 'package:package_info/package_info.dart';
import 'package:cake_wallet/di.dart';
import 'package:cw_core/wallet_type.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:cake_wallet/entities/language_service.dart';
import 'package:cake_wallet/entities/balance_display_mode.dart';
import 'package:cake_wallet/entities/fiat_currency.dart';
import 'package:cw_core/node.dart';
import 'package:cake_wallet/monero/monero.dart';
import 'package:cake_wallet/entities/action_list_display_mode.dart';
import 'package:cake_wallet/entities/fiat_api_mode.dart';
import 'package:cw_core/set_app_secure_native.dart';

part 'settings_store.g.dart';

class SettingsStore = SettingsStoreBase with _$SettingsStore;

abstract class SettingsStoreBase with Store {
  SettingsStoreBase(
      {required SharedPreferences sharedPreferences,
      required bool initialShouldShowMarketPlaceInDashboard,
      required FiatCurrency initialFiatCurrency,
      required BalanceDisplayMode initialBalanceDisplayMode,
      required bool initialSaveRecipientAddress,
      required bool initialAppSecure,
      required bool initialDisableBuy,
      required bool initialDisableSell,
      required FiatApiMode initialFiatMode,
      required bool initialAllowBiometricalAuthentication,
      required String initialTotpSecretKey,
      required bool initialUseTOTP2FA,
      required int initialFailedTokenTrial,
      required ExchangeApiMode initialExchangeStatus,
      required ThemeBase initialTheme,
      required int initialPinLength,
      required String initialLanguageCode,
      // required String initialCurrentLocale,
      required this.appVersion,
      required this.deviceName,
      required Map<WalletType, Node> nodes,
      required this.shouldShowYatPopup,
      required this.isBitcoinBuyEnabled,
      required this.actionlistDisplayMode,
      required this.pinTimeOutDuration,
      TransactionPriority? initialBitcoinTransactionPriority,
      TransactionPriority? initialMoneroTransactionPriority,
      TransactionPriority? initialHavenTransactionPriority,
      TransactionPriority? initialLitecoinTransactionPriority})
      : nodes = ObservableMap<WalletType, Node>.of(nodes),
        _sharedPreferences = sharedPreferences,
        fiatCurrency = initialFiatCurrency,
        balanceDisplayMode = initialBalanceDisplayMode,
        shouldSaveRecipientAddress = initialSaveRecipientAddress,
        fiatApiMode = initialFiatMode,
        allowBiometricalAuthentication = initialAllowBiometricalAuthentication,
        totpSecretKey = initialTotpSecretKey,
        useTOTP2FA = initialUseTOTP2FA,
        numberOfFailedTokenTrials = initialFailedTokenTrial,
        isAppSecure = initialAppSecure,
        disableBuy = initialDisableBuy,
        disableSell = initialDisableSell,
        shouldShowMarketPlaceInDashboard = initialShouldShowMarketPlaceInDashboard,
        exchangeStatus = initialExchangeStatus,
        currentTheme = initialTheme,
        pinCodeLength = initialPinLength,
        languageCode = initialLanguageCode,
        priority = ObservableMap<WalletType, TransactionPriority>() {
    //this.nodes = ObservableMap<WalletType, Node>.of(nodes);

    if (initialMoneroTransactionPriority != null) {
      priority[WalletType.monero] = initialMoneroTransactionPriority;
    }

    if (initialBitcoinTransactionPriority != null) {
      priority[WalletType.bitcoin] = initialBitcoinTransactionPriority;
    }

    if (initialHavenTransactionPriority != null) {
      priority[WalletType.haven] = initialHavenTransactionPriority;
    }

    if (initialLitecoinTransactionPriority != null) {
      priority[WalletType.litecoin] = initialLitecoinTransactionPriority;
    }

    reaction(
        (_) => fiatCurrency,
        (FiatCurrency fiatCurrency) => sharedPreferences.setString(
            PreferencesKey.currentFiatCurrencyKey, fiatCurrency.serialize()));

    reaction(
        (_) => shouldShowYatPopup,
        (bool shouldShowYatPopup) =>
            sharedPreferences.setBool(PreferencesKey.shouldShowYatPopup, shouldShowYatPopup));

    priority.observe((change) {
      final String? key;
      switch (change.key) {
        case WalletType.monero:
          key = PreferencesKey.moneroTransactionPriority;
          break;
        case WalletType.bitcoin:
          key = PreferencesKey.bitcoinTransactionPriority;
          break;
        case WalletType.litecoin:
          key = PreferencesKey.litecoinTransactionPriority;
          break;
        case WalletType.haven:
          key = PreferencesKey.havenTransactionPriority;
          break;
        default:
          key = null;
      }

      if (change.newValue != null && key != null) {
        sharedPreferences.setInt(key, change.newValue!.serialize());
      }
    });

    reaction(
        (_) => shouldSaveRecipientAddress,
        (bool shouldSaveRecipientAddress) => sharedPreferences.setBool(
            PreferencesKey.shouldSaveRecipientAddressKey, shouldSaveRecipientAddress));

    setIsAppSecureNative(isAppSecure);

    reaction((_) => isAppSecure, (bool isAppSecure) {
      sharedPreferences.setBool(PreferencesKey.isAppSecureKey, isAppSecure);
        setIsAppSecureNative(isAppSecure);
    });

    reaction(
        (_) => disableBuy,
        (bool disableBuy) => sharedPreferences.setBool(
            PreferencesKey.disableBuyKey, disableBuy));

    reaction(
        (_) => disableSell,
        (bool disableSell) => sharedPreferences.setBool(
            PreferencesKey.disableSellKey, disableSell));

    reaction(
        (_) => fiatApiMode,
        (FiatApiMode mode) =>
            sharedPreferences.setInt(PreferencesKey.currentFiatApiModeKey, mode.serialize()));

    reaction((_) => currentTheme,
        (ThemeBase theme) => sharedPreferences.setInt(PreferencesKey.currentTheme, theme.raw));

    reaction(
        (_) => allowBiometricalAuthentication,
        (bool biometricalAuthentication) => sharedPreferences.setBool(
            PreferencesKey.allowBiometricalAuthenticationKey, biometricalAuthentication));

    reaction(
        (_) => useTOTP2FA, (bool use) => sharedPreferences.setBool(PreferencesKey.useTOTP2FA, use));

    reaction(
        (_) => numberOfFailedTokenTrials,
        (int failedTokenTrail) =>
            sharedPreferences.setInt(PreferencesKey.failedTotpTokenTrials, failedTokenTrail));

    reaction((_) => totpSecretKey,
        (String totpKey) => sharedPreferences.setString(PreferencesKey.totpSecretKey, totpKey));

    reaction(
        (_) => shouldShowMarketPlaceInDashboard,
        (bool value) =>
            sharedPreferences.setBool(PreferencesKey.shouldShowMarketPlaceInDashboard, value));

    reaction((_) => pinCodeLength,
        (int pinLength) => sharedPreferences.setInt(PreferencesKey.currentPinLength, pinLength));

    reaction(
        (_) => languageCode,
        (String languageCode) =>
            sharedPreferences.setString(PreferencesKey.currentLanguageCode, languageCode));

    reaction(
        (_) => pinTimeOutDuration,
        (PinCodeRequiredDuration pinCodeInterval) =>
            sharedPreferences.setInt(PreferencesKey.pinTimeOutDuration, pinCodeInterval.value));

    reaction(
        (_) => balanceDisplayMode,
        (BalanceDisplayMode mode) => sharedPreferences.setInt(
            PreferencesKey.currentBalanceDisplayModeKey, mode.serialize()));

    reaction(
        (_) => exchangeStatus,
        (ExchangeApiMode mode) =>
            sharedPreferences.setInt(PreferencesKey.exchangeStatusKey, mode.serialize()));

    this.nodes.observe((change) {
      if (change.newValue != null && change.key != null) {
        _saveCurrentNode(change.newValue!, change.key!);
      }
    });
  }

  static const defaultPinLength = 4;
  static const defaultActionsMode = 11;
  static const defaultPinCodeTimeOutDuration = PinCodeRequiredDuration.tenminutes;

  @observable
  FiatCurrency fiatCurrency;

  @observable
  bool shouldShowYatPopup;

  @observable
  bool shouldShowMarketPlaceInDashboard;

  @observable
  ObservableList<ActionListDisplayMode> actionlistDisplayMode;

  @observable
  BalanceDisplayMode balanceDisplayMode;

  @observable
  FiatApiMode fiatApiMode;

  @observable
  bool shouldSaveRecipientAddress;

  @observable
  bool isAppSecure;

  @observable
  bool disableBuy;

  @observable
  bool disableSell;

  @observable
  bool allowBiometricalAuthentication;

  @observable
  String totpSecretKey;

  @computed
  String get totpVersionOneLink {
    return 'otpauth://totp/Cake%20Wallet:$deviceName?secret=$totpSecretKey&issuer=Cake%20Wallet&algorithm=SHA512&digits=8&period=30';
  }

  @observable
  bool useTOTP2FA;

  @observable
  int numberOfFailedTokenTrials;

  @observable
  ExchangeApiMode exchangeStatus;

  @observable
  ThemeBase currentTheme;

  @observable
  int pinCodeLength;

  @observable
  PinCodeRequiredDuration pinTimeOutDuration;

  @computed
  ThemeData get theme => currentTheme.themeData;

  @observable
  String languageCode;

  @observable
  ObservableMap<WalletType, TransactionPriority> priority;

  String appVersion;

  String deviceName;

  SharedPreferences _sharedPreferences;

  ObservableMap<WalletType, Node> nodes;

  Node getCurrentNode(WalletType walletType) {
    final node = nodes[walletType];

    if (node == null) {
      throw Exception('No node found for wallet type: ${walletType.toString()}');
    }

    return node;
  }

  bool isBitcoinBuyEnabled;

  bool get shouldShowReceiveWarning =>
      _sharedPreferences.getBool(PreferencesKey.shouldShowReceiveWarning) ?? true;

  Future<void> setShouldShowReceiveWarning(bool value) async =>
      _sharedPreferences.setBool(PreferencesKey.shouldShowReceiveWarning, value);

  static Future<SettingsStore> load(
      {required Box<Node> nodeSource,
      required bool isBitcoinBuyEnabled,
      FiatCurrency initialFiatCurrency = FiatCurrency.usd,
      BalanceDisplayMode initialBalanceDisplayMode = BalanceDisplayMode.availableBalance,
      ThemeBase? initialTheme}) async {
    final sharedPreferences = await getIt.getAsync<SharedPreferences>();
    final currentFiatCurrency = FiatCurrency.deserialize(
        raw: sharedPreferences.getString(PreferencesKey.currentFiatCurrencyKey)!);

    TransactionPriority? moneroTransactionPriority = monero?.deserializeMoneroTransactionPriority(
        raw: sharedPreferences.getInt(PreferencesKey.moneroTransactionPriority)!);
    TransactionPriority? bitcoinTransactionPriority =
        bitcoin?.deserializeBitcoinTransactionPriority(
            sharedPreferences.getInt(PreferencesKey.bitcoinTransactionPriority)!);

    TransactionPriority? havenTransactionPriority;
    TransactionPriority? litecoinTransactionPriority;

    if (sharedPreferences.getInt(PreferencesKey.havenTransactionPriority) != null) {
      havenTransactionPriority = monero?.deserializeMoneroTransactionPriority(
          raw: sharedPreferences.getInt(PreferencesKey.havenTransactionPriority)!);
    }
    if (sharedPreferences.getInt(PreferencesKey.litecoinTransactionPriority) != null) {
      litecoinTransactionPriority = bitcoin?.deserializeLitecoinTransactionPriority(
          sharedPreferences.getInt(PreferencesKey.litecoinTransactionPriority)!);
    }

    moneroTransactionPriority ??= monero?.getDefaultTransactionPriority();
    bitcoinTransactionPriority ??= bitcoin?.getMediumTransactionPriority();
    havenTransactionPriority ??= monero?.getDefaultTransactionPriority();
    litecoinTransactionPriority ??= bitcoin?.getLitecoinTransactionPriorityMedium();

    final currentBalanceDisplayMode = BalanceDisplayMode.deserialize(
        raw: sharedPreferences.getInt(PreferencesKey.currentBalanceDisplayModeKey)!);
    // FIX-ME: Check for which default value we should have here
    final shouldSaveRecipientAddress =
        sharedPreferences.getBool(PreferencesKey.shouldSaveRecipientAddressKey) ?? false;
    final isAppSecure =
        sharedPreferences.getBool(PreferencesKey.isAppSecureKey) ?? false;
    final disableBuy =
        sharedPreferences.getBool(PreferencesKey.disableBuyKey) ?? false;
    final disableSell =
        sharedPreferences.getBool(PreferencesKey.disableSellKey) ?? false;
    final currentFiatApiMode = FiatApiMode.deserialize(
        raw: sharedPreferences.getInt(PreferencesKey.currentFiatApiModeKey) ??
            FiatApiMode.enabled.raw);
    final allowBiometricalAuthentication =
        sharedPreferences.getBool(PreferencesKey.allowBiometricalAuthenticationKey) ?? false;
    final totpSecretKey = sharedPreferences.getString(PreferencesKey.totpSecretKey) ?? '';
    final useTOTP2FA = sharedPreferences.getBool(PreferencesKey.useTOTP2FA) ?? false;
    final tokenTrialNumber = sharedPreferences.getInt(PreferencesKey.failedTotpTokenTrials) ?? 0;
    final shouldShowMarketPlaceInDashboard =
        sharedPreferences.getBool(PreferencesKey.shouldShowMarketPlaceInDashboard) ?? true;
    final exchangeStatus = ExchangeApiMode.deserialize(
        raw: sharedPreferences.getInt(PreferencesKey.exchangeStatusKey) ??
            ExchangeApiMode.enabled.raw);
    final legacyTheme = (sharedPreferences.getBool(PreferencesKey.isDarkThemeLegacy) ?? false)
        ? ThemeType.dark.index
        : ThemeType.bright.index;
    final savedTheme = initialTheme ??
        ThemeList.deserialize(
            raw: sharedPreferences.getInt(PreferencesKey.currentTheme) ?? legacyTheme);
    final actionListDisplayMode = ObservableList<ActionListDisplayMode>();
    actionListDisplayMode.addAll(deserializeActionlistDisplayModes(
        sharedPreferences.getInt(PreferencesKey.displayActionListModeKey) ?? defaultActionsMode));
    var pinLength = sharedPreferences.getInt(PreferencesKey.currentPinLength);
    final timeOutDuration = sharedPreferences.getInt(PreferencesKey.pinTimeOutDuration);
    final pinCodeTimeOutDuration = timeOutDuration != null
        ? PinCodeRequiredDuration.deserialize(raw: timeOutDuration)
        : defaultPinCodeTimeOutDuration;

    // If no value
    if (pinLength == null || pinLength == 0) {
      pinLength = defaultPinLength;
    }

    final savedLanguageCode = sharedPreferences.getString(PreferencesKey.currentLanguageCode) ??
        await LanguageService.localeDetection();
    final nodeId = sharedPreferences.getInt(PreferencesKey.currentNodeIdKey);
    final bitcoinElectrumServerId =
        sharedPreferences.getInt(PreferencesKey.currentBitcoinElectrumSererIdKey);
    final litecoinElectrumServerId =
        sharedPreferences.getInt(PreferencesKey.currentLitecoinElectrumSererIdKey);
    final havenNodeId = sharedPreferences.getInt(PreferencesKey.currentHavenNodeIdKey);
    final moneroNode = nodeSource.get(nodeId);
    final bitcoinElectrumServer = nodeSource.get(bitcoinElectrumServerId);
    final litecoinElectrumServer = nodeSource.get(litecoinElectrumServerId);
    final havenNode = nodeSource.get(havenNodeId);
    final packageInfo = await PackageInfo.fromPlatform();
    final deviceName = await _getDeviceName() ?? '';
    final shouldShowYatPopup = sharedPreferences.getBool(PreferencesKey.shouldShowYatPopup) ?? true;

    final nodes = <WalletType, Node>{};

    if (moneroNode != null) {
      nodes[WalletType.monero] = moneroNode;
    }

    if (bitcoinElectrumServer != null) {
      nodes[WalletType.bitcoin] = bitcoinElectrumServer;
    }

    if (litecoinElectrumServer != null) {
      nodes[WalletType.litecoin] = litecoinElectrumServer;
    }

    if (havenNode != null) {
      nodes[WalletType.haven] = havenNode;
    }

    return SettingsStore(
        sharedPreferences: sharedPreferences,
        initialShouldShowMarketPlaceInDashboard: shouldShowMarketPlaceInDashboard,
        nodes: nodes,
        appVersion: packageInfo.version,
        deviceName: deviceName,
        isBitcoinBuyEnabled: isBitcoinBuyEnabled,
        initialFiatCurrency: currentFiatCurrency,
        initialBalanceDisplayMode: currentBalanceDisplayMode,
        initialSaveRecipientAddress: shouldSaveRecipientAddress,
        initialAppSecure: isAppSecure,
        initialDisableBuy: disableBuy,
        initialDisableSell: disableSell,
        initialFiatMode: currentFiatApiMode,
        initialAllowBiometricalAuthentication: allowBiometricalAuthentication,
        initialTotpSecretKey: totpSecretKey,
        initialUseTOTP2FA: useTOTP2FA,
        initialFailedTokenTrial: tokenTrialNumber,
        initialExchangeStatus: exchangeStatus,
        initialTheme: savedTheme,
        actionlistDisplayMode: actionListDisplayMode,
        initialPinLength: pinLength,
        pinTimeOutDuration: pinCodeTimeOutDuration,
        initialLanguageCode: savedLanguageCode,
        initialMoneroTransactionPriority: moneroTransactionPriority,
        initialBitcoinTransactionPriority: bitcoinTransactionPriority,
        initialHavenTransactionPriority: havenTransactionPriority,
        initialLitecoinTransactionPriority: litecoinTransactionPriority,
        shouldShowYatPopup: shouldShowYatPopup);
  }

  Future<void> reload({required Box<Node> nodeSource}) async {
    final sharedPreferences = await getIt.getAsync<SharedPreferences>();

    fiatCurrency = FiatCurrency.deserialize(
        raw: sharedPreferences.getString(PreferencesKey.currentFiatCurrencyKey)!);

    priority[WalletType.monero] = monero?.deserializeMoneroTransactionPriority(
            raw: sharedPreferences.getInt(PreferencesKey.moneroTransactionPriority)!) ??
        priority[WalletType.monero]!;
    priority[WalletType.bitcoin] = bitcoin?.deserializeBitcoinTransactionPriority(
            sharedPreferences.getInt(PreferencesKey.moneroTransactionPriority)!) ??
        priority[WalletType.bitcoin]!;

    if (sharedPreferences.getInt(PreferencesKey.havenTransactionPriority) != null) {
      priority[WalletType.haven] = monero?.deserializeMoneroTransactionPriority(
              raw: sharedPreferences.getInt(PreferencesKey.havenTransactionPriority)!) ??
          priority[WalletType.haven]!;
    }
    if (sharedPreferences.getInt(PreferencesKey.litecoinTransactionPriority) != null) {
      priority[WalletType.litecoin] = bitcoin?.deserializeLitecoinTransactionPriority(
              sharedPreferences.getInt(PreferencesKey.litecoinTransactionPriority)!) ??
          priority[WalletType.litecoin]!;
    }

    balanceDisplayMode = BalanceDisplayMode.deserialize(
        raw: sharedPreferences.getInt(PreferencesKey.currentBalanceDisplayModeKey)!);
    shouldSaveRecipientAddress =
        sharedPreferences.getBool(PreferencesKey.shouldSaveRecipientAddressKey) ??
            shouldSaveRecipientAddress;
    totpSecretKey = sharedPreferences.getString(PreferencesKey.totpSecretKey) ?? totpSecretKey;
    useTOTP2FA = sharedPreferences.getBool(PreferencesKey.useTOTP2FA) ?? useTOTP2FA;
    numberOfFailedTokenTrials =
        sharedPreferences.getInt(PreferencesKey.failedTotpTokenTrials) ?? numberOfFailedTokenTrials;
        sharedPreferences.getBool(PreferencesKey.shouldSaveRecipientAddressKey) ?? shouldSaveRecipientAddress;
    isAppSecure =
        sharedPreferences.getBool(PreferencesKey.isAppSecureKey) ?? isAppSecure;
    disableBuy =
        sharedPreferences.getBool(PreferencesKey.disableBuyKey) ?? disableBuy;
    disableSell =
        sharedPreferences.getBool(PreferencesKey.disableSellKey) ?? disableSell;
    allowBiometricalAuthentication = sharedPreferences
        .getBool(PreferencesKey.allowBiometricalAuthenticationKey) ??
        allowBiometricalAuthentication;
    shouldShowMarketPlaceInDashboard =
        sharedPreferences.getBool(PreferencesKey.shouldShowMarketPlaceInDashboard) ??
            shouldShowMarketPlaceInDashboard;
    exchangeStatus = ExchangeApiMode.deserialize(
        raw: sharedPreferences.getInt(PreferencesKey.exchangeStatusKey) ??
            ExchangeApiMode.enabled.raw);
    final legacyTheme = (sharedPreferences.getBool(PreferencesKey.isDarkThemeLegacy) ?? false)
        ? ThemeType.dark.index
        : ThemeType.bright.index;
    currentTheme = ThemeList.deserialize(
        raw: sharedPreferences.getInt(PreferencesKey.currentTheme) ?? legacyTheme);
    actionlistDisplayMode = ObservableList<ActionListDisplayMode>();
    actionlistDisplayMode.addAll(deserializeActionlistDisplayModes(
        sharedPreferences.getInt(PreferencesKey.displayActionListModeKey) ?? defaultActionsMode));
    var pinLength = sharedPreferences.getInt(PreferencesKey.currentPinLength);
    // If no value
    if (pinLength == null || pinLength == 0) {
      pinLength = pinCodeLength;
    }
    pinCodeLength = pinLength;

    languageCode = sharedPreferences.getString(PreferencesKey.currentLanguageCode) ?? languageCode;
    shouldShowYatPopup =
        sharedPreferences.getBool(PreferencesKey.shouldShowYatPopup) ?? shouldShowYatPopup;

    final nodeId = sharedPreferences.getInt(PreferencesKey.currentNodeIdKey);
    final bitcoinElectrumServerId =
        sharedPreferences.getInt(PreferencesKey.currentBitcoinElectrumSererIdKey);
    final litecoinElectrumServerId =
        sharedPreferences.getInt(PreferencesKey.currentLitecoinElectrumSererIdKey);
    final havenNodeId = sharedPreferences.getInt(PreferencesKey.currentHavenNodeIdKey);
    final moneroNode = nodeSource.get(nodeId);
    final bitcoinElectrumServer = nodeSource.get(bitcoinElectrumServerId);
    final litecoinElectrumServer = nodeSource.get(litecoinElectrumServerId);
    final havenNode = nodeSource.get(havenNodeId);

    if (moneroNode != null) {
      nodes[WalletType.monero] = moneroNode;
    }

    if (bitcoinElectrumServer != null) {
      nodes[WalletType.bitcoin] = bitcoinElectrumServer;
    }

    if (litecoinElectrumServer != null) {
      nodes[WalletType.litecoin] = litecoinElectrumServer;
    }

    if (havenNode != null) {
      nodes[WalletType.haven] = havenNode;
    }
  }

  Future<void> _saveCurrentNode(Node node, WalletType walletType) async {
    switch (walletType) {
      case WalletType.bitcoin:
        await _sharedPreferences.setInt(
            PreferencesKey.currentBitcoinElectrumSererIdKey, node.key as int);
        break;
      case WalletType.litecoin:
        await _sharedPreferences.setInt(
            PreferencesKey.currentLitecoinElectrumSererIdKey, node.key as int);
        break;
      case WalletType.monero:
        await _sharedPreferences.setInt(PreferencesKey.currentNodeIdKey, node.key as int);
        break;
      case WalletType.haven:
        await _sharedPreferences.setInt(PreferencesKey.currentHavenNodeIdKey, node.key as int);
        break;
      default:
        break;
    }

    nodes[walletType] = node;
  }

  static Future<String?> _getDeviceName() async {
    String? deviceName = '';
    final deviceInfoPlugin = DeviceInfoPlugin();

    if (Platform.isAndroid) {
      final androidInfo = await deviceInfoPlugin.androidInfo;
      deviceName = '${androidInfo.brand}%20${androidInfo.manufacturer}%20${androidInfo.model}';
      print(deviceName);
    } else if (Platform.isIOS) {
      final iosInfo = await deviceInfoPlugin.iosInfo;
      deviceName = iosInfo.model;
    } else if (Platform.isLinux) {
      final linuxInfo = await deviceInfoPlugin.linuxInfo;
      deviceName = linuxInfo.prettyName;
    } else if (Platform.isMacOS) {
      final macInfo = await deviceInfoPlugin.macOsInfo;
      deviceName = macInfo.computerName;
    } else if (Platform.isWindows) {
      final windowsInfo = await deviceInfoPlugin.windowsInfo;
      deviceName = windowsInfo.productName;
    }

    return deviceName;
  }
}