cake_wallet/lib/view_model/exchange/exchange_trade_view_model.dart
Godwin Asuquo d9905a7cf3
Cw 110 integrate simple swap exchange (#459)
* add support for SimpleSwap exchange

* fix edit receive amount field

* fixed merge conflicts

* Fix issues from code review
2022-08-31 16:34:07 +01:00

143 lines
4.2 KiB
Dart

import 'dart:async';
import 'package:cake_wallet/exchange/sideshift/sideshift_exchange_provider.dart';
import 'package:cake_wallet/exchange/simpleswap/simpleswap_exchange_provider.dart';
import 'package:cw_core/wallet_base.dart';
import 'package:cw_core/crypto_currency.dart';
import 'package:cake_wallet/exchange/changenow/changenow_exchange_provider.dart';
import 'package:cake_wallet/exchange/exchange_provider.dart';
import 'package:cake_wallet/exchange/exchange_provider_description.dart';
import 'package:cake_wallet/exchange/morphtoken/morphtoken_exchange_provider.dart';
import 'package:cake_wallet/exchange/trade.dart';
import 'package:cake_wallet/exchange/xmrto/xmrto_exchange_provider.dart';
import 'package:cake_wallet/store/dashboard/trades_store.dart';
import 'package:cake_wallet/view_model/send/send_view_model.dart';
import 'package:hive/hive.dart';
import 'package:mobx/mobx.dart';
import 'package:cake_wallet/src/screens/exchange_trade/exchange_trade_item.dart';
import 'package:cake_wallet/generated/i18n.dart';
part 'exchange_trade_view_model.g.dart';
class ExchangeTradeViewModel = ExchangeTradeViewModelBase
with _$ExchangeTradeViewModel;
abstract class ExchangeTradeViewModelBase with Store {
ExchangeTradeViewModelBase(
{this.wallet, this.trades, this.tradesStore, this.sendViewModel}) {
trade = tradesStore.trade;
isSendable = trade.from == wallet.currency ||
trade.provider == ExchangeProviderDescription.xmrto;
switch (trade.provider) {
case ExchangeProviderDescription.xmrto:
_provider = XMRTOExchangeProvider();
break;
case ExchangeProviderDescription.changeNow:
_provider = ChangeNowExchangeProvider();
break;
case ExchangeProviderDescription.morphToken:
_provider = MorphTokenExchangeProvider(trades: trades);
break;
case ExchangeProviderDescription.sideShift:
_provider = SideShiftExchangeProvider();
break;
case ExchangeProviderDescription.simpleSwap:
_provider = SimpleSwapExchangeProvider();
break;
}
items = ObservableList<ExchangeTradeItem>();
_updateItems();
_updateTrade();
timer = Timer.periodic(Duration(seconds: 20), (_) async => _updateTrade());
}
final WalletBase wallet;
final Box<Trade> trades;
final TradesStore tradesStore;
final SendViewModel sendViewModel;
@observable
Trade trade;
@observable
bool isSendable;
@computed
String get extraInfo => trade.from == CryptoCurrency.xlm
? '\n\n' + S.current.xlm_extra_info
: trade.from == CryptoCurrency.xrp
? '\n\n' + S.current.xrp_extra_info
: '';
@observable
ObservableList<ExchangeTradeItem> items;
ExchangeProvider _provider;
Timer timer;
@action
Future confirmSending() async {
if (!isSendable) {
return;
}
sendViewModel.clearOutputs();
final output = sendViewModel.outputs.first;
output.address = trade.inputAddress;
output.setCryptoAmount(trade.amount);
await sendViewModel.createTransaction();
}
@action
Future<void> _updateTrade() async {
try {
final updatedTrade = await _provider.findTradeById(id: trade.id);
if (updatedTrade.createdAt == null && trade.createdAt != null) {
updatedTrade.createdAt = trade.createdAt;
}
trade = updatedTrade;
_updateItems();
} catch (e) {
print(e.toString());
}
}
void _updateItems() {
items?.clear();
items.add(ExchangeTradeItem(
title: S.current.id, data: '${trade.id}', isCopied: true));
if (trade.extraId != null) {
final title = trade.from == CryptoCurrency.xrp
? S.current.destination_tag
: trade.from == CryptoCurrency.xlm
? S.current.memo
: S.current.extra_id;
items.add(ExchangeTradeItem(
title: title, data: '${trade.extraId}', isCopied: false));
}
items.addAll([
ExchangeTradeItem(
title: S.current.amount, data: '${trade.amount}', isCopied: false),
ExchangeTradeItem(
title: S.current.status, data: '${trade.state}', isCopied: false),
ExchangeTradeItem(
title: S.current.widgets_address + ':',
data: trade.inputAddress,
isCopied: true),
]);
}
}