mirror of
https://github.com/cake-tech/cake_wallet.git
synced 2024-11-01 09:57:46 +00:00
225 lines
8.2 KiB
Dart
225 lines
8.2 KiB
Dart
import 'dart:convert';
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import 'package:cw_core/amount_converter.dart';
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import 'package:hive/hive.dart';
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import 'package:cake_wallet/exchange/trade_not_found_exeption.dart';
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import 'package:flutter/foundation.dart';
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import 'package:http/http.dart';
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import 'package:cw_core/crypto_currency.dart';
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import 'package:cake_wallet/exchange/exchange_pair.dart';
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import 'package:cake_wallet/exchange/exchange_provider.dart';
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import 'package:cake_wallet/exchange/limits.dart';
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import 'package:cake_wallet/exchange/trade.dart';
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import 'package:cake_wallet/exchange/trade_request.dart';
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import 'package:cake_wallet/exchange/trade_state.dart';
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import 'package:cake_wallet/exchange/morphtoken/morphtoken_request.dart';
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import 'package:cake_wallet/exchange/exchange_provider_description.dart';
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import 'package:cake_wallet/exchange/trade_not_created_exeption.dart';
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class MorphTokenExchangeProvider extends ExchangeProvider {
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MorphTokenExchangeProvider({required this.trades})
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: super(pairList: [
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ExchangePair(from: CryptoCurrency.xmr, to: CryptoCurrency.eth),
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ExchangePair(from: CryptoCurrency.xmr, to: CryptoCurrency.bch),
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ExchangePair(from: CryptoCurrency.xmr, to: CryptoCurrency.ltc),
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ExchangePair(from: CryptoCurrency.xmr, to: CryptoCurrency.dash),
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ExchangePair(from: CryptoCurrency.dash, to: CryptoCurrency.btc),
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ExchangePair(from: CryptoCurrency.dash, to: CryptoCurrency.eth),
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ExchangePair(from: CryptoCurrency.dash, to: CryptoCurrency.bch),
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ExchangePair(from: CryptoCurrency.dash, to: CryptoCurrency.ltc),
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ExchangePair(from: CryptoCurrency.dash, to: CryptoCurrency.xmr),
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ExchangePair(from: CryptoCurrency.ltc, to: CryptoCurrency.btc),
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ExchangePair(from: CryptoCurrency.ltc, to: CryptoCurrency.eth),
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ExchangePair(from: CryptoCurrency.ltc, to: CryptoCurrency.bch),
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ExchangePair(from: CryptoCurrency.ltc, to: CryptoCurrency.dash),
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ExchangePair(from: CryptoCurrency.ltc, to: CryptoCurrency.xmr),
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ExchangePair(from: CryptoCurrency.bch, to: CryptoCurrency.btc),
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ExchangePair(from: CryptoCurrency.bch, to: CryptoCurrency.eth),
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ExchangePair(from: CryptoCurrency.bch, to: CryptoCurrency.ltc),
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ExchangePair(from: CryptoCurrency.bch, to: CryptoCurrency.dash),
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ExchangePair(from: CryptoCurrency.bch, to: CryptoCurrency.xmr),
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ExchangePair(from: CryptoCurrency.eth, to: CryptoCurrency.btc),
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ExchangePair(from: CryptoCurrency.eth, to: CryptoCurrency.bch),
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ExchangePair(from: CryptoCurrency.eth, to: CryptoCurrency.ltc),
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ExchangePair(from: CryptoCurrency.eth, to: CryptoCurrency.dash),
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ExchangePair(from: CryptoCurrency.eth, to: CryptoCurrency.xmr),
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ExchangePair(from: CryptoCurrency.btc, to: CryptoCurrency.eth),
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ExchangePair(from: CryptoCurrency.btc, to: CryptoCurrency.bch),
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ExchangePair(from: CryptoCurrency.btc, to: CryptoCurrency.ltc),
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ExchangePair(from: CryptoCurrency.btc, to: CryptoCurrency.dash),
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ExchangePair(from: CryptoCurrency.btc, to: CryptoCurrency.xmr)
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]);
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Box<Trade> trades;
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static const apiUri = 'https://api.morphtoken.com';
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static const _morphURISuffix = '/morph';
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static const _limitsURISuffix = '/limits';
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static const _ratesURISuffix = '/rates';
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static const weight = 10000;
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@override
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String get title => 'MorphToken';
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@override
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bool get isAvailable => true;
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@override
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bool get isEnabled => true;
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@override
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bool get supportsFixedRate => false;
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@override
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ExchangeProviderDescription get description =>
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ExchangeProviderDescription.morphToken;
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@override
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Future<bool> checkIsAvailable() async => true;
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@override
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Future<Limits> fetchLimits({
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required CryptoCurrency from,
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required CryptoCurrency to,
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required bool isFixedRateMode}) async {
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final url = apiUri + _limitsURISuffix;
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final uri = Uri.parse(url);
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final headers = {'Content-type': 'application/json'};
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final body = json.encode({
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"input": {"asset": from.toString()},
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"output": [
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{"asset": to.toString(), "weight": weight}
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]
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});
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final response = await post(uri, headers: headers, body: body);
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final responseJSON = json.decode(response.body) as Map<String, dynamic>;
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final min = responseJSON['input']['limits']['min'] as int;
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int max = 0;
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double ethMax;
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if (from == CryptoCurrency.eth) {
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ethMax = responseJSON['input']['limits']['max'] as double;
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} else {
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max = responseJSON['input']['limits']['max'] as int;
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}
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final minFormatted = AmountConverter.amountIntToDouble(from, min);
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final maxFormatted = AmountConverter.amountIntToDouble(from, max);
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return Limits(min: minFormatted, max: maxFormatted);
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}
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@override
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Future<Trade> createTrade({
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required TradeRequest request,
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required bool isFixedRateMode}) async {
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const url = apiUri + _morphURISuffix;
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final _request = request as MorphTokenRequest;
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final body = {
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"input": {
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"asset": _request.from.toString(),
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"refund": _request.refundAddress
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},
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"output": [
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{
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"asset": _request.to.toString(),
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"weight": weight,
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"address": _request.address
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}
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],
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"tag": "cakewallet"
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};
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final uri = Uri.parse(url);
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final response = await post(uri,
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headers: {'Content-Type': 'application/json'}, body: json.encode(body));
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if (response.statusCode != 200) {
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if (response.statusCode == 400) {
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final responseJSON = json.decode(response.body) as Map<String, dynamic>;
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final error = responseJSON['description'] as String;
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throw TradeNotCreatedException(description, description: error);
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}
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throw TradeNotCreatedException(description);
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}
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final responseJSON = json.decode(response.body) as Map<String, dynamic>;
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final id = responseJSON['id'] as String;
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return Trade(
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id: id,
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provider: description,
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from: _request.from,
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to: _request.to,
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state: TradeState.created,
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amount: _request.amount,
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createdAt: DateTime.now());
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}
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@override
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Future<Trade> findTradeById({required String id}) async {
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final url = apiUri + _morphURISuffix + '/' + id;
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final uri = Uri.parse(url);
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final response = await get(uri);
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if (response.statusCode != 200) {
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if (response.statusCode == 400) {
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final responseJSON = json.decode(response.body) as Map<String, dynamic>;
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final error = responseJSON['description'] as String;
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throw TradeNotFoundException(id,
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provider: description, description: error);
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}
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throw TradeNotFoundException(id, provider: description);
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}
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final responseJSON = json.decode(response.body) as Map<String, dynamic>;
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final fromCurrency = responseJSON['input']['asset'] as String;
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final from = CryptoCurrency.fromString(fromCurrency.toLowerCase());
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final toCurrency = responseJSON['output'][0]['asset'] as String;
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final to = CryptoCurrency.fromString(toCurrency.toLowerCase());
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final inputAddress = responseJSON['input']['deposit_address'] as String;
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final status = responseJSON['state'] as String;
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final state = TradeState.deserialize(raw: status.toLowerCase());
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String amount = "";
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for (final trade in trades.values) {
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if (trade.id == id) {
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amount = trade.amount;
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break;
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}
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}
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return Trade(
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id: id,
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from: from,
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to: to,
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provider: description,
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inputAddress: inputAddress,
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amount: amount,
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state: state);
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}
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@override
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Future<double> calculateAmount(
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{required CryptoCurrency from,
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required CryptoCurrency to,
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required double amount,
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required bool isFixedRateMode,
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required bool isReceiveAmount}) async {
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final url = apiUri + _ratesURISuffix;
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final uri = Uri.parse(url);
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final response = await get(uri);
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final responseJSON = json.decode(response.body) as Map<String, dynamic>;
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final rate = responseJSON['data'][from.toString()][to.toString()] as String;
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try {
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final estimatedAmount = double.parse(rate) * amount;
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return estimatedAmount;
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} catch (_) {
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return 0.0;
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}
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}
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}
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