stack_wallet/lib/services/exchange/trocador/trocador_exchange.dart

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/*
* This file is part of Stack Wallet.
*
* Copyright (c) 2023 Cypher Stack
* All Rights Reserved.
* The code is distributed under GPLv3 license, see LICENSE file for details.
* Generated by Cypher Stack on 2023-05-26
*
*/
import 'dart:math';
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import 'package:decimal/decimal.dart';
import 'package:stackwallet/exceptions/exchange/exchange_exception.dart';
import 'package:stackwallet/models/exchange/response_objects/estimate.dart';
import 'package:stackwallet/models/exchange/response_objects/range.dart';
import 'package:stackwallet/models/exchange/response_objects/trade.dart';
import 'package:stackwallet/models/isar/exchange_cache/currency.dart';
import 'package:stackwallet/models/isar/exchange_cache/pair.dart';
import 'package:stackwallet/services/exchange/exchange.dart';
import 'package:stackwallet/services/exchange/exchange_response.dart';
import 'package:stackwallet/services/exchange/trocador/response_objects/trocador_coin.dart';
import 'package:stackwallet/services/exchange/trocador/response_objects/trocador_quote.dart';
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import 'package:stackwallet/services/exchange/trocador/trocador_api.dart';
import 'package:uuid/uuid.dart';
class TrocadorExchange extends Exchange {
TrocadorExchange._();
static TrocadorExchange? _instance;
static TrocadorExchange get instance => _instance ??= TrocadorExchange._();
static const exchangeName = "Trocador";
static const onlySupportedNetwork = "Mainnet";
@override
Future<ExchangeResponse<Trade>> createTrade({
required String from,
required String to,
required bool fixedRate,
required Decimal amount,
required String addressTo,
String? extraId,
required String addressRefund,
required String refundExtraId,
Estimate? estimate,
required bool reversed,
}) async {
final response = reversed
? await TrocadorAPI.createNewPaymentRateTrade(
isOnion: false,
rateId: estimate?.rateId,
fromTicker: from.toLowerCase(),
fromNetwork: onlySupportedNetwork,
toTicker: to.toLowerCase(),
toNetwork: onlySupportedNetwork,
toAmount: amount.toString(),
receivingAddress: addressTo,
receivingMemo: null,
refundAddress: addressRefund,
refundMemo: null,
exchangeProvider: estimate!.exchangeProvider!,
isFixedRate: fixedRate,
)
: await TrocadorAPI.createNewStandardRateTrade(
isOnion: false,
rateId: estimate?.rateId,
fromTicker: from.toLowerCase(),
fromNetwork: onlySupportedNetwork,
toTicker: to.toLowerCase(),
toNetwork: onlySupportedNetwork,
fromAmount: amount.toString(),
receivingAddress: addressTo,
receivingMemo: null,
refundAddress: addressRefund,
refundMemo: null,
exchangeProvider: estimate!.exchangeProvider!,
isFixedRate: fixedRate,
);
if (response.value == null) {
return ExchangeResponse(exception: response.exception);
}
final trade = response.value!;
return ExchangeResponse(
value: Trade(
uuid: const Uuid().v1(),
tradeId: trade.tradeId,
rateType: fixedRate ? "fixed" : "floating",
direction: reversed ? "reversed" : "direct",
timestamp: trade.date,
updatedAt: trade.date,
payInCurrency: trade.coinFrom,
payInAmount: trade.amountFrom.toString(),
payInAddress: trade.addressProvider,
payInNetwork: trade.networkFrom,
payInExtraId: trade.addressProviderMemo,
payInTxid: "",
payOutCurrency: trade.coinTo,
payOutAmount: trade.amountTo.toString(),
payOutAddress: trade.addressUser,
payOutNetwork: trade.networkTo,
payOutExtraId: trade.addressUserMemo,
payOutTxid: "",
refundAddress: trade.refundAddress,
refundExtraId: trade.refundAddressMemo,
status: trade.status,
exchangeName: "$exchangeName (${trade.provider})",
),
);
}
List<TrocadorCoin>? _cachedCurrencies;
@override
Future<ExchangeResponse<List<Currency>>> getAllCurrencies(
bool fixedRate) async {
_cachedCurrencies ??= (await TrocadorAPI.getCoins(isOnion: false)).value;
_cachedCurrencies?.removeWhere((e) => e.network != onlySupportedNetwork);
final value = _cachedCurrencies
?.map(
(e) => Currency(
exchangeName: exchangeName,
ticker: e.ticker,
name: e.name,
network: e.network,
image: e.image,
isFiat: false,
rateType: SupportedRateType.both,
isStackCoin: Currency.checkIsStackCoin(e.ticker),
tokenContract: null,
isAvailable: true,
),
)
.toList();
if (value == null) {
return ExchangeResponse(
exception: ExchangeException(
"Failed to fetch trocador coins",
ExchangeExceptionType.generic,
),
);
} else {
return ExchangeResponse(value: value);
}
}
@override
Future<ExchangeResponse<List<Pair>>> getAllPairs(bool fixedRate) async {
final response = await getAllCurrencies(fixedRate);
if (response.value == null) {
return ExchangeResponse(exception: response.exception);
}
final List<Pair> pairs = [];
for (int i = 0; i < response.value!.length; i++) {
final a = response.value![i];
for (int j = i + 1; j < response.value!.length; j++) {
final b = response.value![j];
pairs.add(
Pair(
exchangeName: exchangeName,
from: a.ticker,
to: b.ticker,
rateType: SupportedRateType.both,
),
);
pairs.add(
Pair(
exchangeName: exchangeName,
to: a.ticker,
from: b.ticker,
rateType: SupportedRateType.both,
),
);
}
}
return ExchangeResponse(value: pairs);
}
@override
Future<ExchangeResponse<List<Estimate>>> getEstimates(
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String from,
String to,
Decimal amount,
bool fixedRate,
bool reversed,
) async {
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final response = reversed
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? await TrocadorAPI.getNewPaymentRate(
isOnion: false,
fromTicker: from,
fromNetwork: onlySupportedNetwork,
toTicker: to,
toNetwork: onlySupportedNetwork,
toAmount: amount.toString(),
)
: await TrocadorAPI.getNewStandardRate(
isOnion: false,
fromTicker: from,
fromNetwork: onlySupportedNetwork,
toTicker: to,
toNetwork: onlySupportedNetwork,
fromAmount: amount.toString(),
);
if (response.value == null) {
return ExchangeResponse(exception: response.exception);
}
final List<Estimate> estimates = [];
final List<TrocadorQuote> cOrLowerQuotes = [];
for (final quote in response.value!.quotes) {
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if (quote.fixed == fixedRate &&
quote.provider.toLowerCase() != "changenow") {
final rating = quote.kycRating.toLowerCase();
if (rating == "a" || rating == "b") {
estimates.add(
Estimate(
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estimatedAmount: reversed ? quote.amountFrom! : quote.amountTo!,
fixedRate: quote.fixed,
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reversed: reversed,
exchangeProvider: quote.provider,
rateId: response.value!.tradeId,
kycRating: quote.kycRating,
),
);
} else {
cOrLowerQuotes.add(quote);
}
}
}
cOrLowerQuotes.sort((a, b) => b.waste.compareTo(a.waste));
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for (int i = 0; i < min(3, cOrLowerQuotes.length); i++) {
final quote = cOrLowerQuotes[i];
estimates.add(
Estimate(
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estimatedAmount: reversed ? quote.amountFrom! : quote.amountTo!,
fixedRate: quote.fixed,
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reversed: reversed,
exchangeProvider: quote.provider,
rateId: response.value!.tradeId,
kycRating: quote.kycRating,
),
);
}
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return ExchangeResponse(
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value: estimates
..sort((a, b) => b.estimatedAmount.compareTo(a.estimatedAmount)),
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);
}
@override
Future<ExchangeResponse<List<Currency>>> getPairedCurrencies(
String forCurrency, bool fixedRate) async {
// TODO: implement getPairedCurrencies
throw UnimplementedError();
}
@override
Future<ExchangeResponse<List<Pair>>> getPairsFor(
String currency,
bool fixedRate,
) async {
final response = await getAllPairs(fixedRate);
if (response.value == null) {
return ExchangeResponse(exception: response.exception);
}
final pairs = response.value!.where(
(e) =>
e.from.toUpperCase() == currency.toUpperCase() ||
e.to.toUpperCase() == currency.toUpperCase(),
);
return ExchangeResponse(value: pairs.toList());
}
@override
Future<ExchangeResponse<Range>> getRange(
String from,
String to,
bool fixedRate,
) async {
if (_cachedCurrencies == null) {
await getAllCurrencies(fixedRate);
}
if (_cachedCurrencies == null) {
return ExchangeResponse(
exception: ExchangeException(
"Failed to updated trocador cached coins to get min/max range",
ExchangeExceptionType.generic,
),
);
}
final fromCoin = _cachedCurrencies!
.firstWhere((e) => e.ticker.toLowerCase() == from.toLowerCase());
return ExchangeResponse(
value: Range(
max: fromCoin.maximum,
min: fromCoin.minimum,
),
);
}
@override
Future<ExchangeResponse<Trade>> getTrade(String tradeId) async {
// TODO: implement getTrade
throw UnimplementedError();
}
@override
Future<ExchangeResponse<List<Trade>>> getTrades() async {
// TODO: implement getTrades
throw UnimplementedError();
}
@override
String get name => exchangeName;
@override
Future<ExchangeResponse<Trade>> updateTrade(Trade trade) async {
final response = await TrocadorAPI.getTrade(
isOnion: false,
tradeId: trade.tradeId,
);
if (response.value != null) {
final updated = response.value!;
final updatedTrade = Trade(
uuid: trade.uuid,
tradeId: updated.tradeId,
rateType: trade.rateType,
direction: trade.direction,
timestamp: trade.timestamp,
updatedAt: DateTime.now(),
payInCurrency: updated.coinFrom,
payInAmount: updated.amountFrom.toString(),
payInAddress: updated.addressProvider,
payInNetwork: trade.payInNetwork,
payInExtraId: trade.payInExtraId,
payInTxid: trade.payInTxid,
payOutCurrency: updated.coinTo,
payOutAmount: updated.amountTo.toString(),
payOutAddress: updated.addressUser,
payOutNetwork: trade.payOutNetwork,
payOutExtraId: trade.payOutExtraId,
payOutTxid: trade.payOutTxid,
refundAddress: trade.refundAddress,
refundExtraId: trade.refundExtraId,
status: updated.status,
exchangeName: "$exchangeName (${updated.provider})",
);
return ExchangeResponse(value: updatedTrade);
} else {
if (response.exception?.type == ExchangeExceptionType.orderNotFound) {
final updatedTrade = Trade(
uuid: trade.uuid,
tradeId: trade.tradeId,
rateType: trade.rateType,
direction: trade.direction,
timestamp: trade.timestamp,
updatedAt: DateTime.now(),
payInCurrency: trade.payInCurrency,
payInAmount: trade.payInAmount,
payInAddress: trade.payInAddress,
payInNetwork: trade.payInNetwork,
payInExtraId: trade.payInExtraId,
payInTxid: trade.payInTxid,
payOutCurrency: trade.payOutCurrency,
payOutAmount: trade.payOutAmount,
payOutAddress: trade.payOutAddress,
payOutNetwork: trade.payOutNetwork,
payOutExtraId: trade.payOutExtraId,
payOutTxid: trade.payOutTxid,
refundAddress: trade.refundAddress,
refundExtraId: trade.refundExtraId,
status: "Unknown",
exchangeName: trade.exchangeName,
);
return ExchangeResponse(value: updatedTrade);
}
return ExchangeResponse(exception: response.exception);
}
}
}