CW-961-Integrate-xoswap

lib/exchange/exchange_provider_description.dart

@@ -34,6 +34,8 @@ class ExchangeProviderDescription extends EnumerableItem<int> with Serializable<
       ExchangeProviderDescription(title: 'StealthEx', raw: 11, image: 'assets/images/stealthex.png');
   static const chainflip =
       ExchangeProviderDescription(title: 'Chainflip', raw: 12, image: 'assets/images/chainflip.png');
+  static const xoSwap =
+  ExchangeProviderDescription(title: 'XOSwap', raw: 13, image: 'assets/images/xoswap.svg');
 
   static ExchangeProviderDescription deserialize({required int raw}) {
     switch (raw) {
@@ -63,6 +65,8 @@ class ExchangeProviderDescription extends EnumerableItem<int> with Serializable<
         return stealthEx;
       case 12:
         return chainflip;
+      case 13:
+        return xoSwap;
       default:
         throw Exception('Unexpected token: $raw for ExchangeProviderDescription deserialize');
     }

lib/exchange/provider/xoswap_exchange_provider.dart

@@ -0,0 +1,263 @@
+import 'dart:convert';
+
+import 'package:cake_wallet/exchange/exchange_provider_description.dart';
+import 'package:cake_wallet/exchange/limits.dart';
+import 'package:cake_wallet/exchange/provider/exchange_provider.dart';
+import 'package:cake_wallet/exchange/trade.dart';
+import 'package:cake_wallet/exchange/trade_not_created_exception.dart';
+import 'package:cake_wallet/exchange/trade_request.dart';
+import 'package:cake_wallet/exchange/trade_state.dart';
+import 'package:cake_wallet/exchange/utils/currency_pairs_utils.dart';
+import 'package:cw_core/crypto_currency.dart';
+import 'package:cw_core/utils/print_verbose.dart';
+import 'package:http/http.dart' as http;
+
+class XOSwapExchangeProvider extends ExchangeProvider {
+  XOSwapExchangeProvider() : super(pairList: supportedPairs(_notSupported));
+
+  static const List<CryptoCurrency> _notSupported = [];
+
+  static const _apiAuthority = 'exchange.exodus.io';
+  static const _apiPath = '/v3';
+  static const _pairsPath = '/pairs';
+  static const _ratePath = '/rates';
+  static const _orders = '/orders';
+
+  static const _headers = {'Content-Type': 'application/json', 'App-Name': 'cake-labs'};
+
+  @override
+  String get title => 'XOSwap';
+
+  @override
+  bool get isAvailable => true;
+
+  @override
+  bool get isEnabled => true;
+
+  @override
+  bool get supportsFixedRate => true;
+
+  @override
+  ExchangeProviderDescription get description => ExchangeProviderDescription.xoSwap;
+
+  @override
+  Future<bool> checkIsAvailable() async => true;
+
+  Future<List<dynamic>> getRatesForPair({
+    required CryptoCurrency from,
+    required CryptoCurrency to,
+  }) async {
+    try {
+      final curFrom = '${from.title}${_networkId(from)}';
+      final curTo = '${to.title}${_networkId(to)}';
+      final pairId = curFrom + '_' + curTo;
+      final uri = Uri.https(_apiAuthority, '$_apiPath$_pairsPath/$pairId$_ratePath');
+      final response = await http.get(uri, headers: _headers);
+      if (response.statusCode != 200) return [];
+      return json.decode(response.body) as List<dynamic>;
+    } catch (e) {
+      printV(e.toString());
+      return [];
+    }
+  }
+
+  Future<Limits> fetchLimits({
+    required CryptoCurrency from,
+    required CryptoCurrency to,
+    required bool isFixedRateMode,
+  }) async {
+    final rates = await getRatesForPair(from: from, to: to);
+    if (rates.isEmpty) return Limits(min: 0, max: 0);
+
+    double minLimit = double.infinity;
+    double maxLimit = 0;
+
+    for (var rate in rates) {
+      final double currentMin = double.parse(rate['min']['value'].toString());
+      final double currentMax = double.parse(rate['max']['value'].toString());
+      if (currentMin < minLimit) minLimit = currentMin;
+      if (currentMax > maxLimit) maxLimit = currentMax;
+    }
+    return Limits(min: minLimit, max: maxLimit);
+  }
+
+  Future<double> fetchRate({
+    required CryptoCurrency from,
+    required CryptoCurrency to,
+    required double amount,
+    required bool isFixedRateMode,
+    required bool isReceiveAmount,
+  }) async {
+    try {
+      final rates = await getRatesForPair(from: from, to: to);
+      if (rates.isEmpty) return 0;
+
+      if (!isFixedRateMode) {
+        double bestOutput = 0.0;
+        for (var rate in rates) {
+          final double minVal = double.parse(rate['min']['value'].toString());
+          final double maxVal = double.parse(rate['max']['value'].toString());
+          if (amount >= minVal && amount <= maxVal) {
+            final double rateMultiplier = double.parse(rate['amount']['value'].toString());
+            final double minerFee = double.parse(rate['minerFee']['value'].toString());
+            final double outputAmount = (amount * rateMultiplier) - minerFee;
+            if (outputAmount > bestOutput) {
+              bestOutput = outputAmount;
+            }
+          }
+        }
+        return bestOutput > 0 ? (bestOutput / amount) : 0;
+      } else {
+        double bestInput = double.infinity;
+        for (var rate in rates) {
+          final double rateMultiplier = double.parse(rate['amount']['value'].toString());
+          final double minerFee = double.parse(rate['minerFee']['value'].toString());
+          final double minVal = double.parse(rate['min']['value'].toString());
+          final double maxVal = double.parse(rate['max']['value'].toString());
+          final double requiredSend = (amount + minerFee) / rateMultiplier;
+          if (requiredSend >= minVal && requiredSend <= maxVal) {
+            if (requiredSend < bestInput) {
+              bestInput = requiredSend;
+            }
+          }
+        }
+        return bestInput < double.infinity ? amount / bestInput : 0;
+      }
+    } catch (e) {
+      printV(e.toString());
+      return 0;
+    }
+  }
+
+  @override
+  Future<Trade> createTrade({
+    required TradeRequest request,
+    required bool isFixedRateMode,
+    required bool isSendAll,
+  }) async {
+    try {
+      final uri = Uri.https(_apiAuthority, '$_apiPath$_orders');
+
+      final payload = {
+        'fromAmount': request.fromAmount,
+        'fromAddress': request.refundAddress,
+        'toAmount': request.toAmount,
+        'toAddress': request.toAddress,
+        'pairId': '${request.fromCurrency.title}_${request.toCurrency.title}',
+      };
+
+      final response = await http.post(uri, headers: _headers, body: json.encode(payload));
+      if (response.statusCode != 201) {
+        final responseJSON = json.decode(response.body) as Map<String, dynamic>;
+        final error = responseJSON['error'] ?? 'Unknown error';
+        final message = responseJSON['message'] ?? '';
+        throw Exception('$error\n$message');
+      }
+      final responseJSON = json.decode(response.body) as Map<String, dynamic>;
+
+      final amount = responseJSON['amount'] as Map<String, dynamic>;
+      final toAmount = responseJSON['toAmount'] as Map<String, dynamic>;
+      final orderId = responseJSON['id'] as String;
+      final from = request.fromCurrency;
+      final to = request.toCurrency;
+      final payoutAddress = responseJSON['toAddress'] as String;
+      final depositAddress = responseJSON['payInAddress'] as String;
+      final refundAddress = responseJSON['fromAddress'] as String;
+      final depositAmount = amount['value'] as double;
+      final receiveAmount = toAmount['value'] as String;
+      final status = responseJSON['status'] as String;
+      final createdAtString = responseJSON['createdAt'] as String;
+      final extraId = responseJSON['payInAddressTag'] as String?;
+
+      final createdAt = DateTime.parse(createdAtString).toLocal();
+
+      return Trade(
+        id: orderId,
+        from: from,
+        to: to,
+        provider: description,
+        inputAddress: depositAddress,
+        refundAddress: refundAddress,
+        state: TradeState.deserialize(raw: status),
+        createdAt: createdAt,
+        amount: depositAmount.toString(),
+        receiveAmount: receiveAmount.toString(),
+        payoutAddress: payoutAddress,
+        extraId: extraId,
+      );
+    } catch (e) {
+      printV(e.toString());
+      throw TradeNotCreatedException(description);
+    }
+  }
+
+  @override
+  Future<Trade> findTradeById({required String id}) async {
+    try {
+      final uri = Uri.https(_apiAuthority, '$_apiPath$_orders/$id');
+      final response = await http.get(uri, headers: _headers);
+      if (response.statusCode != 200) {
+        final responseJSON = json.decode(response.body) as Map<String, dynamic>;
+        if (responseJSON.containsKey('code') && responseJSON['code'] == 'NOT_FOUND') {
+          throw Exception('Trade not found');
+        }
+        final error = responseJSON['error'] ?? 'Unknown error';
+        final message = responseJSON['message'] ?? responseJSON['details'] ?? '';
+        throw Exception('$error\n$message');
+      }
+      final responseJSON = json.decode(response.body) as Map<String, dynamic>;
+
+      final pairId = responseJSON['pairId'] as String;
+      final pairParts = pairId.split('_');
+      final CryptoCurrency fromCurrency =
+          CryptoCurrency.fromString(pairParts.isNotEmpty ? pairParts[0] : "");
+      final CryptoCurrency toCurrency =
+          CryptoCurrency.fromString(pairParts.length > 1 ? pairParts[1] : "");
+
+      final amount = responseJSON['amount'] as Map<String, dynamic>;
+      final toAmount = responseJSON['toAmount'] as Map<String, dynamic>;
+      final orderId = responseJSON['id'] as String;
+      final depositAmount = amount['value'] as String;
+      final receiveAmount = toAmount['value'] as String;
+      final depositAddress = responseJSON['payInAddress'] as String;
+      final payoutAddress = responseJSON['toAddress'] as String;
+      final refundAddress = responseJSON['fromAddress'] as String;
+      final status = responseJSON['status'] as String;
+      final createdAtString = responseJSON['createdAt'] as String;
+      final createdAt = DateTime.parse(createdAtString).toLocal();
+      final extraId = responseJSON['payInAddressTag'] as String?;
+
+      return Trade(
+        id: orderId,
+        from: fromCurrency,
+        to: toCurrency,
+        provider: description,
+        inputAddress: depositAddress,
+        refundAddress: refundAddress,
+        state: TradeState.deserialize(raw: status),
+        createdAt: createdAt,
+        amount: depositAmount,
+        receiveAmount: receiveAmount,
+        payoutAddress: payoutAddress,
+        extraId: extraId,
+      );
+    } catch (e) {
+      printV(e.toString());
+      throw TradeNotCreatedException(description);
+    }
+  }
+
+  String _networkId(CryptoCurrency currency) {
+    if (currency.tag == 'POL') {
+      if (currency.title.toUpperCase() == 'USDT') return 'matic86E249C1';
+
+      if (currency.title.toUpperCase() == 'USDC') return 'matic0A883D9B';
+
+      return '';
+    }
+
+    if (currency.tag == 'ETH') return '';
+
+    return currency.tag ?? '';
+  }
+}

lib/exchange/trade_state.dart

@@ -100,6 +100,7 @@ class TradeState extends EnumerableItem<String> with Serializable<String> {
       case 'waiting':
         return waiting;
       case 'processing':
+      case 'inProgress':
         return processing;
       case 'waitingPayment':
         return waitingPayment;

lib/store/dashboard/trade_filter_store.dart

@@ -19,7 +19,8 @@ abstract class TradeFilterStoreBase with Store {
         displayChainflip = true,
         displayThorChain = true,
         displayLetsExchange = true,
-        displayStealthEx = true;
+        displayStealthEx = true,
+        displayXOSwap = true;
 
   @observable
   bool displayXMRTO;
@@ -44,7 +45,7 @@ abstract class TradeFilterStoreBase with Store {
 
   @observable
   bool displayChainflip;
-  
+
   @observable
   bool displayThorChain;
 
@@ -54,17 +55,21 @@ abstract class TradeFilterStoreBase with Store {
   @observable
   bool displayStealthEx;
 
+  @observable
+  bool displayXOSwap;
+
   @computed
   bool get displayAllTrades =>
       displayChangeNow &&
       displaySideShift &&
       displaySimpleSwap &&
       displayTrocador &&
-      displayExolix && 
+      displayExolix &&
       displayChainflip &&
       displayThorChain &&
       displayLetsExchange &&
-      displayStealthEx;
+      displayStealthEx &&
+      displayXOSwap;
 
   @action
   void toggleDisplayExchange(ExchangeProviderDescription provider) {
@@ -102,6 +107,9 @@ abstract class TradeFilterStoreBase with Store {
       case ExchangeProviderDescription.stealthEx:
         displayStealthEx = !displayStealthEx;
         break;
+      case ExchangeProviderDescription.xoSwap:
+        displayXOSwap = !displayXOSwap;
+        break;
       case ExchangeProviderDescription.all:
         if (displayAllTrades) {
           displayChangeNow = false;
@@ -115,6 +123,7 @@ abstract class TradeFilterStoreBase with Store {
           displayThorChain = false;
           displayLetsExchange = false;
           displayStealthEx = false;
+          displayXOSwap = false;
         } else {
           displayChangeNow = true;
           displaySideShift = true;
@@ -127,6 +136,7 @@ abstract class TradeFilterStoreBase with Store {
           displayThorChain = true;
           displayLetsExchange = true;
           displayStealthEx = true;
+          displayXOSwap = true;
         }
         break;
     }
@@ -158,7 +168,8 @@ abstract class TradeFilterStoreBase with Store {
                     item.trade.provider == ExchangeProviderDescription.thorChain) ||
                 (displayLetsExchange &&
                     item.trade.provider == ExchangeProviderDescription.letsExchange) ||
-                (displayStealthEx && item.trade.provider == ExchangeProviderDescription.stealthEx))
+                (displayStealthEx && item.trade.provider == ExchangeProviderDescription.stealthEx) ||
+                (displayXOSwap && item.trade.provider == ExchangeProviderDescription.xoSwap))
             .toList()
         : _trades;
   }