hash-wallet/lib/view_model/dashboard/receive_option_view_model.dart

import 'package:cake_wallet/bitcoin/bitcoin.dart';
import 'package:cake_wallet/zcash/zcash.dart';
import 'package:cw_core/receive_page_option.dart';
import 'package:cw_core/wallet_base.dart';
import 'package:cw_core/wallet_type.dart';
import 'package:mobx/mobx.dart';

part 'receive_option_view_model.g.dart';

class ReceiveOptionViewModel = ReceiveOptionViewModelBase with _$ReceiveOptionViewModel;

abstract class ReceiveOptionViewModelBase with Store {
  ReceiveOptionViewModelBase(this._wallet, this.initialPageOption)
      : selectedReceiveOption = initialPageOption ??
            ([WalletType.bitcoin, WalletType.litecoin].contains(_wallet.type)
                ? bitcoin!.getSelectedAddressType(_wallet)
                : (_wallet.type == WalletType.decred && _wallet.isTestnet)
                    ? ReceivePageOption.testnet
                    : _wallet.type == WalletType.zcash
                        ? zcash!.getSelectedAddressType(_wallet)
                        : ReceivePageOption.mainnet) {
    if (_wallet.type == WalletType.zcash) {
      reaction<bool>(
        (_) => zcash!.ironwoodActive(_wallet.walletAddresses),
        (_) => _syncZcashShieldedLabel(),
      );
    }
  }

  final WalletBase _wallet;

  final ReceivePageOption? initialPageOption;

  @observable
  ReceivePageOption selectedReceiveOption;

  @computed
  List<ReceivePageOption> get options => _wallet.walletAddresses.receivePageOptions;

  String get walletTypeString => walletTypeToString(_wallet.type);

  @action
  void selectReceiveOption(ReceivePageOption option) => selectedReceiveOption = option;

  @action
  void _syncZcashShieldedLabel() {
    for (final option in options) {
      if (option.value == selectedReceiveOption.value) {
        selectedReceiveOption = option;
        return;
      }
    }
  }
}