mirror of
https://github.com/Such-Software/hash-wallet.git
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CAKE-20 | updated exchange and exchange template pages; created exchange_view_model and applied to exchange and exchange template pages; applied new design to menu widget; changed text validator and amount validator
This commit is contained in:
Oleksandr Sobol
@@ -0,0 +1,306 @@
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import 'package:cake_wallet/core/address_validator.dart';
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import 'package:cake_wallet/core/amount_validator.dart';
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import 'package:cake_wallet/core/template_validator.dart';
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import 'package:cake_wallet/core/validator.dart';
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import 'package:cake_wallet/core/wallet_base.dart';
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import 'package:cake_wallet/src/domain/common/crypto_currency.dart';
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import 'package:cake_wallet/src/domain/exchange/exchange_provider.dart';
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import 'package:cake_wallet/src/domain/exchange/limits.dart';
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import 'package:cake_wallet/src/domain/exchange/trade.dart';
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import 'package:cake_wallet/src/stores/exchange/limits_state.dart';
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import 'package:intl/intl.dart';
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import 'package:mobx/mobx.dart';
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import 'package:cake_wallet/generated/i18n.dart';
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import 'package:hive/hive.dart';
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import 'package:cake_wallet/src/stores/exchange/exchange_trade_state.dart';
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import 'package:cake_wallet/src/domain/exchange/changenow/changenow_exchange_provider.dart';
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import 'package:cake_wallet/src/domain/exchange/changenow/changenow_request.dart';
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import 'package:cake_wallet/src/domain/exchange/trade_request.dart';
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import 'package:cake_wallet/src/domain/exchange/xmrto/xmrto_exchange_provider.dart';
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import 'package:cake_wallet/src/domain/exchange/xmrto/xmrto_trade_request.dart';
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import 'package:cake_wallet/src/domain/exchange/morphtoken/morphtoken_exchange_provider.dart';
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import 'package:cake_wallet/src/domain/exchange/morphtoken/morphtoken_request.dart';
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import 'package:cake_wallet/store/templates/exchange_template_store.dart';
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import 'package:cake_wallet/src/domain/exchange/exchange_template.dart';
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part 'exchange_view_model.g.dart';
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class ExchangeViewModel = ExchangeViewModelBase with _$ExchangeViewModel;
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abstract class ExchangeViewModelBase with Store {
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ExchangeViewModelBase({this.wallet, this.trades, this.exchangeTemplateStore}) {
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providerList = [
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XMRTOExchangeProvider(),
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ChangeNowExchangeProvider(),
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MorphTokenExchangeProvider(trades: trades)
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];
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provider = providerList[ 0 ];
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depositCurrency = CryptoCurrency.xmr;
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receiveCurrency = CryptoCurrency.btc;
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isDepositAddressEnabled = !(depositCurrency == wallet.currency);
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isReceiveAddressEnabled = !(receiveCurrency == wallet.currency);
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depositAmount = '';
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receiveAmount = '';
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depositAddress = '';
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receiveAddress = '';
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limitsState = LimitsInitialState();
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tradeState = ExchangeTradeStateInitial();
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_cryptoNumberFormat = NumberFormat()..maximumFractionDigits = 12;
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loadLimits();
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}
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final WalletBase wallet;
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final Box<Trade> trades;
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final ExchangeTemplateStore exchangeTemplateStore;
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@observable
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ExchangeProvider provider;
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@observable
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List<ExchangeProvider> providerList;
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@observable
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CryptoCurrency depositCurrency;
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@observable
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CryptoCurrency receiveCurrency;
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@observable
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LimitsState limitsState;
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@observable
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ExchangeTradeState tradeState;
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@observable
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String depositAmount;
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@observable
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String receiveAmount;
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@observable
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String depositAddress;
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@observable
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String receiveAddress;
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@observable
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bool isDepositAddressEnabled;
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@observable
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bool isReceiveAddressEnabled;
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@observable
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bool isValid;
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@observable
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String errorMessage;
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Limits limits;
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NumberFormat _cryptoNumberFormat;
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Validator get amountValidator => AmountValidator(type: wallet.type);
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Validator get addressValidator => AddressValidator(type: wallet.currency);
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Validator get templateValidator => TemplateValidator();
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@computed
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ObservableList<ExchangeTemplate> get templates =>
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exchangeTemplateStore.templates;
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@action
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void changeProvider({ExchangeProvider provider}) {
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this.provider = provider;
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depositAmount = '';
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receiveAmount = '';
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loadLimits();
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}
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@action
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void changeDepositCurrency({CryptoCurrency currency}) {
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depositCurrency = currency;
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_onPairChange();
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isDepositAddressEnabled = !(depositCurrency == wallet.currency);
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isReceiveAddressEnabled = !(receiveCurrency == wallet.currency);
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}
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@action
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void changeReceiveCurrency({CryptoCurrency currency}) {
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receiveCurrency = currency;
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_onPairChange();
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isDepositAddressEnabled = !(depositCurrency == wallet.currency);
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isReceiveAddressEnabled = !(receiveCurrency == wallet.currency);
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}
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@action
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void changeReceiveAmount({String amount}) {
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receiveAmount = amount;
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if (amount == null || amount.isEmpty) {
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depositAmount = '';
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receiveAmount = '';
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return;
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}
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final _amount = double.parse(amount) ?? 0;
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provider
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.calculateAmount(
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from: depositCurrency, to: receiveCurrency, amount: _amount)
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.then((amount) => _cryptoNumberFormat.format(amount).toString().replaceAll(RegExp("\\,"), ""))
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.then((amount) => depositAmount = amount);
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}
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@action
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void changeDepositAmount({String amount}) {
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depositAmount = amount;
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if (amount == null || amount.isEmpty) {
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depositAmount = '';
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receiveAmount = '';
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return;
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}
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final _amount = double.parse(amount);
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provider
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.calculateAmount(
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from: depositCurrency, to: receiveCurrency, amount: _amount)
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.then((amount) => _cryptoNumberFormat.format(amount).toString().replaceAll(RegExp("\\,"), ""))
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.then((amount) => receiveAmount = amount);
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}
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@action
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Future loadLimits() async {
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limitsState = LimitsIsLoading();
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try {
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limits = await provider.fetchLimits(
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from: depositCurrency, to: receiveCurrency);
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limitsState = LimitsLoadedSuccessfully(limits: limits);
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} catch (e) {
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limitsState = LimitsLoadedFailure(error: e.toString());
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}
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}
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@action
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Future createTrade() async {
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TradeRequest request;
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String amount;
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CryptoCurrency currency;
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if (provider is XMRTOExchangeProvider) {
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request = XMRTOTradeRequest(
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from: depositCurrency,
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to: receiveCurrency,
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amount: depositAmount,
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address: receiveAddress,
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refundAddress: depositAddress);
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amount = depositAmount;
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currency = depositCurrency;
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}
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if (provider is ChangeNowExchangeProvider) {
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request = ChangeNowRequest(
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from: depositCurrency,
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to: receiveCurrency,
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amount: depositAmount,
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refundAddress: depositAddress,
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address: receiveAddress);
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amount = depositAmount;
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currency = depositCurrency;
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}
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if (provider is MorphTokenExchangeProvider) {
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request = MorphTokenRequest(
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from: depositCurrency,
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to: receiveCurrency,
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amount: depositAmount,
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refundAddress: depositAddress,
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address: receiveAddress);
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amount = depositAmount;
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currency = depositCurrency;
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}
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if (limitsState is LimitsLoadedSuccessfully && amount != null) {
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if (double.parse(amount) < limits.min) {
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tradeState = TradeIsCreatedFailure(error: S.current.error_text_minimal_limit('${provider.description}',
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'${limits.min}', currency.toString()));
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} else if (limits.max != null && double.parse(amount) > limits.max) {
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tradeState = TradeIsCreatedFailure(error: S.current.error_text_maximum_limit('${provider.description}',
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'${limits.max}', currency.toString()));
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} else {
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try {
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tradeState = TradeIsCreating();
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final trade = await provider.createTrade(request: request);
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trade.walletId = wallet.id;
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await trades.add(trade);
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tradeState = TradeIsCreatedSuccessfully(trade: trade);
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} catch (e) {
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tradeState = TradeIsCreatedFailure(error: e.toString());
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}
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}
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} else {
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tradeState = TradeIsCreatedFailure(error: S.current.error_text_limits_loading_failed("${provider.description}"));
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}
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}
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@action
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void reset() {
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depositAmount = '';
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receiveAmount = '';
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depositCurrency = CryptoCurrency.xmr;
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receiveCurrency = CryptoCurrency.btc;
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depositAddress = depositCurrency == wallet.currency ? wallet.address : '';
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receiveAddress = receiveCurrency == wallet.currency ? wallet.address : '';
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isDepositAddressEnabled = !(depositCurrency == wallet.currency);
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isReceiveAddressEnabled = !(receiveCurrency == wallet.currency);
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_onPairChange();
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}
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List<ExchangeProvider> providersForCurrentPair() {
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return _providersForPair(from: depositCurrency, to: receiveCurrency);
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}
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List<ExchangeProvider> _providersForPair(
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{CryptoCurrency from, CryptoCurrency to}) {
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final providers = providerList
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.where((provider) => provider.pairList
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.where((pair) =>
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pair.from == depositCurrency && pair.to == receiveCurrency)
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.isNotEmpty)
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.toList();
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return providers;
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}
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void _onPairChange() {
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final isPairExist = provider.pairList
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.where((pair) =>
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pair.from == depositCurrency && pair.to == receiveCurrency)
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.isNotEmpty;
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if (!isPairExist) {
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final provider =
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_providerForPair(from: depositCurrency, to: receiveCurrency);
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if (provider != null) {
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changeProvider(provider: provider);
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}
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}
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depositAmount = '';
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receiveAmount = '';
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loadLimits();
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}
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ExchangeProvider _providerForPair({CryptoCurrency from, CryptoCurrency to}) {
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final providers = _providersForPair(from: from, to: to);
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return providers.isNotEmpty ? providers[0] : null;
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}
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}
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