mirror of
https://github.com/cypherstack/stack_wallet.git
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548 lines
15 KiB
Dart
548 lines
15 KiB
Dart
/*
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* This file is part of Stack Wallet.
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*
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* Copyright (c) 2023 Cypher Stack
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* All Rights Reserved.
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* The code is distributed under GPLv3 license, see LICENSE file for details.
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* Generated by Cypher Stack on 2023-05-26
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*
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*/
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import 'dart:convert';
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import 'package:decimal/decimal.dart';
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import 'package:flutter/foundation.dart';
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import 'package:tuple/tuple.dart';
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import 'package:uuid/uuid.dart';
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import '../../../exceptions/exchange/exchange_exception.dart';
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import '../../../external_api_keys.dart';
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import '../../../models/exchange/response_objects/fixed_rate_market.dart';
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import '../../../models/exchange/response_objects/range.dart';
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import '../../../models/exchange/response_objects/trade.dart';
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import '../../../models/exchange/simpleswap/sp_currency.dart';
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import '../../../models/isar/exchange_cache/pair.dart';
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import '../../../networking/http.dart';
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import '../../../utilities/logger.dart';
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import '../../../utilities/prefs.dart';
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import '../../tor_service.dart';
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import '../exchange_response.dart';
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import 'simpleswap_exchange.dart';
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class SimpleSwapAPI {
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static const String scheme = "https";
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static const String authority = "api.simpleswap.io";
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SimpleSwapAPI._();
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static final SimpleSwapAPI _instance = SimpleSwapAPI._();
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static SimpleSwapAPI get instance => _instance;
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HTTP client = HTTP();
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Uri _buildUri(String path, Map<String, String>? params) {
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return Uri.https(authority, path, params);
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}
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Future<dynamic> _makeGetRequest(Uri uri) async {
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int code = -1;
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try {
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final response = await client.get(
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url: uri,
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proxyInfo: Prefs.instance.useTor
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? TorService.sharedInstance.getProxyInfo()
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: null,
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);
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code = response.code;
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final parsed = jsonDecode(response.body);
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return parsed;
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} catch (e, s) {
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Logging.instance.log(
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"_makeRequest($uri) HTTP:$code threw: $e\n$s",
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level: LogLevel.Error,
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);
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rethrow;
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}
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}
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Future<dynamic> _makePostRequest(
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Uri uri,
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Map<String, dynamic> body,
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) async {
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try {
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final response = await client.post(
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url: uri,
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headers: {'Content-Type': 'application/json'},
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body: jsonEncode(body),
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proxyInfo: Prefs.instance.useTor
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? TorService.sharedInstance.getProxyInfo()
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: null,
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);
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if (response.code == 200) {
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final parsed = jsonDecode(response.body);
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return parsed;
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}
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throw Exception("response: ${response.body}");
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} catch (e, s) {
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Logging.instance
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.log("_makeRequest($uri) threw: $e\n$s", level: LogLevel.Error);
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rethrow;
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}
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}
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Future<ExchangeResponse<Trade>> createNewExchange({
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required bool isFixedRate,
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required String currencyFrom,
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required String currencyTo,
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required String addressTo,
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required String userRefundAddress,
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required String userRefundExtraId,
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required String amount,
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String? extraIdTo,
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String? apiKey,
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}) async {
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final Map<String, dynamic> body = {
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"fixed": isFixedRate,
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"currency_from": currencyFrom,
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"currency_to": currencyTo,
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"addressTo": addressTo,
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"userRefundAddress": userRefundAddress,
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"userRefundExtraId": userRefundExtraId,
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"amount": double.parse(amount),
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"extraIdTo": extraIdTo,
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};
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final uri =
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_buildUri("/create_exchange", {"api_key": apiKey ?? kSimpleSwapApiKey});
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try {
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final jsonObject = await _makePostRequest(uri, body);
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final json = Map<String, dynamic>.from(jsonObject as Map);
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final trade = Trade(
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uuid: const Uuid().v1(),
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tradeId: json["id"] as String,
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rateType: json["type"] as String,
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direction: "direct",
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timestamp: DateTime.parse(json["timestamp"] as String),
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updatedAt: DateTime.parse(json["updated_at"] as String),
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payInCurrency: json["currency_from"] as String,
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payInAmount: json["amount_from"] as String,
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payInAddress: json["address_from"] as String,
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payInNetwork: "",
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payInExtraId: json["extra_id_from"] as String? ?? "",
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payInTxid: json["tx_from"] as String? ?? "",
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payOutCurrency: json["currency_to"] as String,
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payOutAmount: json["amount_to"] as String,
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payOutAddress: json["address_to"] as String,
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payOutNetwork: "",
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payOutExtraId: json["extra_id_to"] as String? ?? "",
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payOutTxid: json["tx_to"] as String? ?? "",
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refundAddress: json["user_refund_address"] as String,
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refundExtraId: json["user_refund_extra_id"] as String,
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status: json["status"] as String,
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exchangeName: SimpleSwapExchange.exchangeName,
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);
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return ExchangeResponse(value: trade, exception: null);
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} catch (e, s) {
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Logging.instance.log(
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"getAvailableCurrencies exception: $e\n$s",
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level: LogLevel.Error,
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);
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return ExchangeResponse(
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exception: ExchangeException(
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e.toString(),
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ExchangeExceptionType.generic,
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),
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value: null,
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);
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}
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}
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Future<ExchangeResponse<List<SPCurrency>>> getAllCurrencies({
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String? apiKey,
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required bool fixedRate,
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}) async {
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final uri = _buildUri(
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"/get_all_currencies",
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{"api_key": apiKey ?? kSimpleSwapApiKey},
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);
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try {
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final jsonArray = await _makeGetRequest(uri);
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return await compute(_parseAvailableCurrenciesJson, jsonArray as List);
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} catch (e, s) {
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Logging.instance.log(
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"getAvailableCurrencies exception: $e\n$s",
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level: LogLevel.Error,
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);
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return ExchangeResponse(
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exception: ExchangeException(
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e.toString(),
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ExchangeExceptionType.generic,
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),
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);
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}
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}
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ExchangeResponse<List<SPCurrency>> _parseAvailableCurrenciesJson(
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List<dynamic> jsonArray,
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) {
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try {
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final List<SPCurrency> currencies = [];
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for (final json in jsonArray) {
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try {
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currencies
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.add(SPCurrency.fromJson(Map<String, dynamic>.from(json as Map)));
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} catch (_) {
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return ExchangeResponse(
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exception: ExchangeException(
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"Failed to serialize $json",
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ExchangeExceptionType.serializeResponseError,
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),
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);
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}
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}
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return ExchangeResponse(value: currencies);
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} catch (e, s) {
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Logging.instance.log(
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"_parseAvailableCurrenciesJson exception: $e\n$s",
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level: LogLevel.Error,
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);
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return ExchangeResponse(
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exception: ExchangeException(
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e.toString(),
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ExchangeExceptionType.generic,
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),
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);
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}
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}
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Future<ExchangeResponse<SPCurrency>> getCurrency({
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required String symbol,
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String? apiKey,
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}) async {
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final uri = _buildUri(
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"/get_currency",
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{
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"api_key": apiKey ?? kSimpleSwapApiKey,
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"symbol": symbol,
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},
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);
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try {
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final jsonObject = await _makeGetRequest(uri);
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return ExchangeResponse(
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value: SPCurrency.fromJson(
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Map<String, dynamic>.from(jsonObject as Map),
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),
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);
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} catch (e, s) {
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Logging.instance
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.log("getCurrency exception: $e\n$s", level: LogLevel.Error);
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return ExchangeResponse(
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exception: ExchangeException(
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e.toString(),
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ExchangeExceptionType.generic,
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),
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);
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}
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}
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/// returns a map where the key currency symbol is a valid pair with any of
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/// the symbols in its value list
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Future<ExchangeResponse<List<Pair>>> getAllPairs({
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required bool isFixedRate,
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String? apiKey,
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}) async {
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final uri = _buildUri(
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"/get_all_pairs",
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{
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"api_key": apiKey ?? kSimpleSwapApiKey,
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"fixed": isFixedRate.toString(),
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},
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);
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try {
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final jsonObject = await _makeGetRequest(uri);
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final result = await compute(
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_parseAvailablePairsJson,
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Tuple2(jsonObject as Map, isFixedRate),
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);
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return result;
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} catch (e, s) {
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Logging.instance
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.log("getAllPairs exception: $e\n$s", level: LogLevel.Error);
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return ExchangeResponse(
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exception: ExchangeException(
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e.toString(),
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ExchangeExceptionType.generic,
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),
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);
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}
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}
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ExchangeResponse<List<Pair>> _parseAvailablePairsJson(
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Tuple2<Map<dynamic, dynamic>, bool> args,
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) {
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try {
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final List<Pair> pairs = [];
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for (final entry in args.item1.entries) {
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try {
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final from = entry.key as String;
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for (final to in entry.value as List) {
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pairs.add(
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Pair(
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exchangeName: SimpleSwapExchange.exchangeName,
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from: from,
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to: to as String,
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rateType: SupportedRateType.estimated,
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),
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);
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}
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} catch (_) {
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return ExchangeResponse(
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exception: ExchangeException(
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"Failed to serialize $json",
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ExchangeExceptionType.serializeResponseError,
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),
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);
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}
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}
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return ExchangeResponse(value: pairs);
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} catch (e, s) {
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Logging.instance.log(
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"_parseAvailableCurrenciesJson exception: $e\n$s",
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level: LogLevel.Error,
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);
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return ExchangeResponse(
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exception: ExchangeException(
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e.toString(),
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ExchangeExceptionType.generic,
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),
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);
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}
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}
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/// returns the estimated amount as a string
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Future<ExchangeResponse<String>> getEstimated({
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required bool isFixedRate,
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required String currencyFrom,
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required String currencyTo,
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required String amount,
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String? apiKey,
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}) async {
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final uri = _buildUri(
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"/get_estimated",
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{
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"api_key": apiKey ?? kSimpleSwapApiKey,
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"fixed": isFixedRate.toString(),
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"currency_from": currencyFrom,
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"currency_to": currencyTo,
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"amount": amount,
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},
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);
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try {
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final jsonObject = await _makeGetRequest(uri);
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return ExchangeResponse(value: jsonObject as String);
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} catch (e, s) {
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Logging.instance
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.log("getEstimated exception: $e\n$s", level: LogLevel.Error);
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return ExchangeResponse(
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exception: ExchangeException(
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e.toString(),
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ExchangeExceptionType.generic,
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),
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);
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}
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}
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/// returns the exchange for the given id
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Future<ExchangeResponse<Trade>> getExchange({
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required String exchangeId,
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String? apiKey,
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Trade? oldTrade,
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}) async {
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final uri = _buildUri(
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"/get_exchange",
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{
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"api_key": apiKey ?? kSimpleSwapApiKey,
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"id": exchangeId,
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},
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);
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try {
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final jsonObject = await _makeGetRequest(uri);
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final json = Map<String, dynamic>.from(jsonObject as Map);
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final ts = DateTime.parse(json["timestamp"] as String);
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final trade = Trade(
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uuid: oldTrade?.uuid ?? const Uuid().v1(),
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tradeId: json["id"] as String,
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rateType: json["type"] as String,
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direction: "direct",
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timestamp: ts,
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updatedAt: DateTime.tryParse(json["updated_at"] as String? ?? "") ?? ts,
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payInCurrency: json["currency_from"] as String,
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payInAmount: json["amount_from"] as String,
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payInAddress: json["address_from"] as String,
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payInNetwork: "",
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payInExtraId: json["extra_id_from"] as String? ?? "",
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payInTxid: json["tx_from"] as String? ?? "",
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payOutCurrency: json["currency_to"] as String,
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payOutAmount: json["amount_to"] as String,
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payOutAddress: json["address_to"] as String,
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payOutNetwork: "",
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payOutExtraId: json["extra_id_to"] as String? ?? "",
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payOutTxid: json["tx_to"] as String? ?? "",
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refundAddress: json["user_refund_address"] as String,
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refundExtraId: json["user_refund_extra_id"] as String,
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status: json["status"] as String,
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exchangeName: SimpleSwapExchange.exchangeName,
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);
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return ExchangeResponse(value: trade);
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} catch (e, s) {
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Logging.instance
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.log("getExchange exception: $e\n$s", level: LogLevel.Error);
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return ExchangeResponse(
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exception: ExchangeException(
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e.toString(),
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ExchangeExceptionType.generic,
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),
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);
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}
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}
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/// returns the minimal exchange amount
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Future<ExchangeResponse<Range>> getRange({
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required bool isFixedRate,
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required String currencyFrom,
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required String currencyTo,
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String? apiKey,
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}) async {
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final uri = _buildUri(
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"/get_ranges",
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{
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"api_key": apiKey ?? kSimpleSwapApiKey,
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"fixed": isFixedRate.toString(),
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"currency_from": currencyFrom,
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"currency_to": currencyTo,
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},
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);
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try {
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final jsonObject = await _makeGetRequest(uri);
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final json = Map<String, dynamic>.from(jsonObject as Map);
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return ExchangeResponse(
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value: Range(
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max: Decimal.tryParse(json["max"] as String? ?? ""),
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min: Decimal.tryParse(json["min"] as String? ?? ""),
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),
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);
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} catch (e, s) {
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Logging.instance.log("getRange exception: $e\n$s", level: LogLevel.Error);
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return ExchangeResponse(
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exception: ExchangeException(
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e.toString(),
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ExchangeExceptionType.generic,
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),
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);
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}
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}
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Future<ExchangeResponse<List<FixedRateMarket>>> getFixedRateMarketInfo({
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String? apiKey,
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}) async {
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final uri = _buildUri(
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"/get_market_info",
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null,
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// {
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// "api_key": apiKey ?? kSimpleSwapApiKey,
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// "fixed": isFixedRate.toString(),
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// "currency_from": currencyFrom,
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// "currency_to": currencyTo,
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// },
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);
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try {
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final jsonArray = await _makeGetRequest(uri);
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try {
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final result = await compute(
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_parseFixedRateMarketsJson,
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jsonArray as List,
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);
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return result;
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} catch (e, s) {
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Logging.instance.log(
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"getAvailableFixedRateMarkets exception: $e\n$s",
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level: LogLevel.Error,
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);
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return ExchangeResponse(
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exception: ExchangeException(
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"Error: $jsonArray",
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ExchangeExceptionType.serializeResponseError,
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),
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);
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}
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} catch (e, s) {
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Logging.instance.log(
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"getAvailableFixedRateMarkets exception: $e\n$s",
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level: LogLevel.Error,
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);
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return ExchangeResponse(
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exception: ExchangeException(
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e.toString(),
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ExchangeExceptionType.generic,
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),
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);
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}
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}
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ExchangeResponse<List<FixedRateMarket>> _parseFixedRateMarketsJson(
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List<dynamic> jsonArray,
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) {
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try {
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final List<FixedRateMarket> markets = [];
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for (final json in jsonArray) {
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try {
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final map = Map<String, dynamic>.from(json as Map);
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markets.add(
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FixedRateMarket(
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from: map["currency_from"] as String,
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to: map["currency_to"] as String,
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min: Decimal.parse(map["min"] as String),
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max: Decimal.parse(map["max"] as String),
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rate: Decimal.parse(map["rate"] as String),
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minerFee: null,
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),
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);
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} catch (_) {
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return ExchangeResponse(
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exception: ExchangeException(
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"Failed to serialize $json",
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ExchangeExceptionType.serializeResponseError,
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),
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);
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}
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}
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return ExchangeResponse(value: markets);
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} catch (_) {
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rethrow;
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}
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}
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}
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