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CWA-169 | added limits check to createTrade() and format to amounts in exchange store

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This commit is contained in:
Oleksandr Sobol 2020-02-07 00:47:21 +02:00
parent 348d1080c9
commit fd964d68bf
1 changed files with 43 additions and 11 deletions
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54
lib/src/stores/exchange/exchange_store.dart
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@ -15,6 +15,8 @@ import 'package:cake_wallet/src/stores/wallet/wallet_store.dart';
import 'package:cake_wallet/src/stores/exchange/exchange_trade_state.dart';
import 'package:cake_wallet/src/stores/exchange/limits_state.dart';
import 'package:cake_wallet/generated/i18n.dart';
import 'package:cake_wallet/src/domain/exchange/limits.dart';
import 'package:intl/intl.dart';
part 'exchange_store.g.dart';
@ -33,6 +35,7 @@ abstract class ExchangeStoreBase with Store {
receiveCurrency = initialReceiveCurrency;
limitsState = LimitsInitialState();
tradeState = ExchangeTradeStateInitial();
_cryptoNumberFormat = NumberFormat()..maximumFractionDigits = 12;
loadLimits();
}
@ -74,6 +77,10 @@ abstract class ExchangeStoreBase with Store {
WalletStore walletStore;
Limits limits;
NumberFormat _cryptoNumberFormat;
@action
void changeProvider({ExchangeProvider provider}) {
this.provider = provider;
@ -108,7 +115,7 @@ abstract class ExchangeStoreBase with Store {
provider
.calculateAmount(
from: depositCurrency, to: receiveCurrency, amount: _amount)
.then((amount) => amount.toString())
.then((amount) => _cryptoNumberFormat.format(amount).toString().replaceAll(RegExp("\\,"), ""))
.then((amount) => depositAmount = amount);
}
@ -125,7 +132,7 @@ abstract class ExchangeStoreBase with Store {
provider
.calculateAmount(
from: depositCurrency, to: receiveCurrency, amount: _amount)
.then((amount) => amount.toString())
.then((amount) => _cryptoNumberFormat.format(amount).toString().replaceAll(RegExp("\\,"), ""))
.then((amount) => receiveAmount = amount);
}
@ -134,7 +141,7 @@ abstract class ExchangeStoreBase with Store {
limitsState = LimitsIsLoading();
try {
final limits = await provider.fetchLimits(
limits = await provider.fetchLimits(
from: depositCurrency, to: receiveCurrency);
limitsState = LimitsLoadedSuccessfully(limits: limits);
} catch (e) {
@ -145,6 +152,8 @@ abstract class ExchangeStoreBase with Store {
@action
Future createTrade() async {
TradeRequest request;
String amount;
CryptoCurrency currency;
if (provider is XMRTOExchangeProvider) {
request = XMRTOTradeRequest(
@ -153,6 +162,8 @@ abstract class ExchangeStoreBase with Store {
amount: receiveAmount,
address: receiveAddress,
refundAddress: depositAddress);
amount = receiveAmount;
currency = receiveCurrency;
}
if (provider is ChangeNowExchangeProvider) {
@ -162,6 +173,8 @@ abstract class ExchangeStoreBase with Store {
amount: depositAmount,
refundAddress: depositAddress,
address: receiveAddress);
amount = depositAmount;
currency = depositCurrency;
}
if (provider is MorphTokenExchangeProvider) {
@ -171,17 +184,36 @@ abstract class ExchangeStoreBase with Store {
amount: depositAmount,
refundAddress: depositAddress,
address: receiveAddress);
amount = depositAmount;
currency = depositCurrency;
}
try {
tradeState = TradeIsCreating();
final trade = await provider.createTrade(request: request);
trade.walletId = walletStore.id;
await trades.add(trade);
tradeState = TradeIsCreatedSuccessfully(trade: trade);
} catch (e) {
tradeState = TradeIsCreatedFailure(error: e.toString());
if (limitsState is LimitsLoadedSuccessfully) {
if (double.parse(amount) < limits.min) {
final error = "Trade for ${provider.description} is not created. "
"Amount is less then minimal: ${limits.min} ${currency.toString()}";
tradeState = TradeIsCreatedFailure(error: error);
} else if (limits.max != null && double.parse(amount) > limits.max) {
final error = "Trade for ${provider.description} is not created. "
"Amount is more then maximum: ${limits.max} ${currency.toString()}";
tradeState = TradeIsCreatedFailure(error: error);
} else {
try {
tradeState = TradeIsCreating();
final trade = await provider.createTrade(request: request);
trade.walletId = walletStore.id;
await trades.add(trade);
tradeState = TradeIsCreatedSuccessfully(trade: trade);
} catch (e) {
tradeState = TradeIsCreatedFailure(error: e.toString());
}
}
} else {
final error = "Trade for ${provider.description} is not created. "
"Limits loading failed";
tradeState = TradeIsCreatedFailure(error: error);
}
}
@action