mirror of
https://github.com/Such-Software/hash-wallet.git
synced 2026-10-17 05:41:29 +02:00
jwinterm
1bd91f7ab3
Deposit side: natives of shipped chains (WOW, XMR, BTC, BCH, DOGE, XNO, ETH, ETH-Base, ETH-Arb, BNB, POL) plus major stables (USDT/USDC variants, DAI). Receive side: same minus BNB (inherited upstream restriction) plus LTC as a receive-only target. ZEC, DASH, SOL, AVAX, Zano, Haven, ADA, EOS, XLM, XRP, TRX, TON and the rest disappear from the swap UI; their CryptoCurrency entries stay defined because the raw ids back Hive-stored trade history.
1848 lines
60 KiB
Dart
1848 lines
60 KiB
Dart
import 'dart:async';
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import 'dart:collection';
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import 'dart:convert';
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import 'dart:developer';
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import 'package:bitcoin_base/bitcoin_base.dart';
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import 'package:hash_wallet/.secrets.g.dart' as secrets;
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import 'package:hash_wallet/bitcoin/bitcoin.dart';
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import 'package:hash_wallet/core/amount_parsing_proxy.dart';
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import 'package:hash_wallet/core/create_trade_result.dart';
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import 'package:hash_wallet/core/fiat_conversion_service.dart';
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import 'package:hash_wallet/core/lightning_invoice_service.dart';
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import 'package:hash_wallet/core/utilities.dart';
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import 'package:hash_wallet/core/wallet_change_listener_view_model.dart';
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import 'package:hash_wallet/entities/calculate_fiat_amount.dart';
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import 'package:hash_wallet/entities/exchange_api_mode.dart';
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import 'package:hash_wallet/entities/fiat_api_mode.dart';
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import 'package:hash_wallet/entities/fiat_currency.dart';
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import 'package:hash_wallet/entities/preferences_key.dart';
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import 'package:hash_wallet/entities/wallet_contact.dart';
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import 'package:hash_wallet/exchange/exchange_provider_description.dart';
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import 'package:hash_wallet/exchange/exchange_template.dart';
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import 'package:hash_wallet/exchange/exchange_trade_state.dart';
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import 'package:hash_wallet/exchange/limits.dart';
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import 'package:hash_wallet/exchange/limits_state.dart';
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import 'package:hash_wallet/exchange/provider/exchange_provider.dart';
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import 'package:hash_wallet/exchange/provider/trocador_exchange_provider.dart';
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import 'package:hash_wallet/exchange/trade.dart';
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import 'package:hash_wallet/exchange/trade_request.dart';
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import 'package:hash_wallet/generated/i18n.dart';
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import 'package:hash_wallet/src/screens/exchange/widgets/currency_picker.dart';
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import 'package:hash_wallet/store/app_store.dart';
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import 'package:hash_wallet/utils/exchange_provider_logger.dart';
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import 'package:hash_wallet/utils/show_pop_up.dart';
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import 'package:cw_core/currency.dart';
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import "package:cw_core/wallet_info.dart";
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import 'package:hash_wallet/store/dashboard/fiat_conversion_store.dart';
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import 'package:hash_wallet/store/dashboard/trades_store.dart';
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import 'package:hash_wallet/store/settings_store.dart';
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import 'package:hash_wallet/store/templates/exchange_template_store.dart';
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import 'package:hash_wallet/evm/evm.dart';
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import 'package:hash_wallet/reactions/wallet_connect.dart';
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import 'package:hash_wallet/utils/token_utilities.dart';
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import 'package:hash_wallet/view_model/contact_list/contact_list_view_model.dart';
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import 'package:hash_wallet/view_model/send/fees_view_model.dart';
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import 'package:hash_wallet/view_model/unspent_coins/unspent_coins_list_view_model.dart';
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import 'package:cw_core/crypto_amount_format.dart';
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import 'package:cw_core/crypto_currency.dart';
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import 'package:cw_core/erc20_token.dart';
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import 'package:cw_core/spl_token.dart';
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import 'package:cw_core/sync_status.dart';
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import 'package:cw_core/transaction_priority.dart';
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import 'package:cw_core/tron_token.dart';
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import 'package:cw_core/unspent_coin_type.dart';
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import 'package:cw_core/utils/print_verbose.dart';
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import 'package:cw_core/utils/proxy_wrapper.dart';
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import 'package:cw_core/wallet_type.dart';
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import 'package:flutter/material.dart';
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import 'package:mobx/mobx.dart';
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import 'package:shared_preferences/shared_preferences.dart';
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part 'exchange_view_model.g.dart';
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class ExchangeViewModel = ExchangeViewModelBase with _$ExchangeViewModel;
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abstract class ExchangeViewModelBase extends WalletChangeListenerViewModel with Store {
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@override
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void onWalletChange(wallet) {
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// FIXME this caused a bug when switching wallet, i can't figure out why it's here?
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// receiveCurrency = wallet.currency;
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// depositCurrency = wallet.currency;
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}
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final List<ReactionDisposer> _disposers = [];
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void dispose() {
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bestRateSync.cancel();
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for (final disposer in _disposers) {
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disposer();
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}
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_disposers.clear();
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}
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ExchangeViewModelBase(
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this._appStore,
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this._exchangeTemplateStore,
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this.tradesStore,
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this.sharedPreferences,
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this.contactListViewModel,
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this.unspentCoinsListViewModel,
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this.feesViewModel,
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this.fiatConversionStore,
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) : isSendAllEnabled = false,
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isFixedRateMode = false,
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isReceiveAmountEntered = false,
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_depositAmount = '',
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_receiveAmount = '',
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receiveAddress = '',
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depositAddress = '',
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isDepositAddressEnabled = false,
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isReceiveAmountEditable = false,
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_useTorOnly = false,
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receiveCurrencies = ObservableList<CryptoCurrency>(),
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depositCurrencies = ObservableList<CryptoCurrency>(),
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limits = Limits(min: 0, max: 0),
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tradeState = ExchangeTradeStateInitial(),
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limitsState = LimitsInitialState(),
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receiveCurrency = _appStore.wallet!.currency,
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depositCurrency = _appStore.wallet!.currency,
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providerList = [],
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selectedProviders = ObservableList<ExchangeProvider>(),
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super(appStore: _appStore) {
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_useTorOnly = _settingsStore.exchangeStatus == ExchangeApiMode.torOnly;
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_setProviders();
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// Hash Bags: the swap picker is a curated allowlist — natives of chains
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// the wallet actually ships plus major stables. Everything else stays
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// defined in CryptoCurrency (raw ids back Hive-stored trade history) but
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// is hidden from the swap UI. LTC is receive-only; BNB stays deposit-only
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// (inherited upstream restriction).
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const swapDepositAllowlist = [
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CryptoCurrency.wow,
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CryptoCurrency.xmr,
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CryptoCurrency.btc,
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CryptoCurrency.bch,
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CryptoCurrency.doge,
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CryptoCurrency.nano,
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CryptoCurrency.eth,
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CryptoCurrency.baseEth,
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CryptoCurrency.arbEth,
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CryptoCurrency.bnb,
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CryptoCurrency.maticpoly,
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CryptoCurrency.usdterc20,
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CryptoCurrency.usdtbsc,
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CryptoCurrency.usdc,
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CryptoCurrency.usdcpoly,
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CryptoCurrency.dai,
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];
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const swapReceiveAllowlist = [
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CryptoCurrency.wow,
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CryptoCurrency.xmr,
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CryptoCurrency.btc,
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CryptoCurrency.bch,
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CryptoCurrency.doge,
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CryptoCurrency.nano,
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CryptoCurrency.eth,
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CryptoCurrency.baseEth,
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CryptoCurrency.arbEth,
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CryptoCurrency.maticpoly,
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CryptoCurrency.usdterc20,
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CryptoCurrency.usdtbsc,
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CryptoCurrency.usdc,
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CryptoCurrency.usdcpoly,
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CryptoCurrency.dai,
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CryptoCurrency.ltc,
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];
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_initialPairBasedOnWallet();
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unspentCoinsListViewModel.initialSetup().then((_) {
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unspentCoinsListViewModel.resetUnspentCoinsInfoSelections();
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});
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final Map<String, dynamic> exchangeProvidersSelection =
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json.decode(sharedPreferences.getString(PreferencesKey.exchangeProvidersSelection) ?? "{}")
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as Map<String, dynamic>;
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/// if the provider is not in the user settings (user's first time or newly added provider)
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/// then use its default value decided by us
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selectedProviders = ObservableList.of(providerList
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.where((element) =>
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(!forceDecentralizedExchanges || !element.description.isCentralized) &&
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(exchangeProvidersSelection[element.title] == null
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? element.isEnabled
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: (exchangeProvidersSelection[element.title] as bool)))
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.toList());
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_setAvailableProviders();
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autorun((_) {
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if (selectedProviders.any((provider) => provider is TrocadorExchangeProvider)) {
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final trocadorProvider =
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selectedProviders.firstWhere((provider) => provider is TrocadorExchangeProvider)
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as TrocadorExchangeProvider;
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updateAllTrocadorProviderStates(trocadorProvider);
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}
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});
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bestRateSync = Timer.periodic(Duration(seconds: 10), (timer) {
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if (tradeState is! TradeIsCreating) {
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calculateBestRate();
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}
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});
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isDepositAddressEnabled = !useSameWalletAddress(depositCurrency);
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_depositAmount = '';
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_receiveAmount = '';
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receiveAddress = '';
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depositAddress =
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useSameWalletAddress(depositCurrency) ? wallet.walletAddresses.addressForExchange : '';
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_disposers.add(reaction((_) => receiveAddress, (_) {
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if(!(tradeState is TradeIsCreatedSuccessfully)) {
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receiveAddressDisplayName = null;
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}
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}));
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provider = providerList.firstOrNull;
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final initialProvider = provider;
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provider!.checkIsAvailable().then((bool isAvailable) {
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if (!isAvailable && provider == initialProvider) {
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provider = providerList.last;
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_onPairChange();
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}
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});
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// providerDisplay is read by ui to display auto-selected provider.
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// it's on a delay so it doesn't flicker.
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_disposers.add(reaction((_) => bestRateProvider, (val) {
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providerDisplay = val;
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}, delay: 300));
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receiveCurrencies = CryptoCurrency.all
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.where(swapReceiveAllowlist.contains)
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.toList()
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.asObservable();
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depositCurrencies = CryptoCurrency.all
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.where(swapDepositAllowlist.contains)
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.toList()
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.asObservable();
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_injectUserEthTokensIntoCurrencyLists();
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_injectUserSplTokensIntoCurrencyLists();
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_injectUserTronTokensIntoCurrencyLists();
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_defineIsReceiveAmountEditable();
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loadLimits();
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_disposers.add(reaction((_) => isFixedRateMode, (Object _) {
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bestRateProvider = null;
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bestRate = 0.0;
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loadLimits();
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}));
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_disposers.add(reaction((_) => forceDecentralizedExchanges, (val) {
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if (val && (bestRateProvider?.description.isCentralized ?? false)) {
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bestRateProvider = null;
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bestRate = 0.0;
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loadLimits();
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}
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}));
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if (isElectrumWallet) {
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bitcoin!.updateFeeRates(wallet);
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}
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fetchFiatPrice(receiveCurrency);
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updateDepositAvailableAmount();
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}
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Future<void> updateDepositAvailableAmount() async {
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if (depositCurrency == CryptoCurrency.btcln) {
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final currency = depositCurrency;
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Future.doWhile(() async {
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await Future.delayed(const Duration(milliseconds: 400));
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if (depositCurrency != currency) {
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return false;
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}
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final balance = wallet.balance[depositCurrency];
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if (balance != null) {
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depositAvailableAmount = _appStore.amountParsingProxy
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.getDisplayCryptoStringFromBigInt(balance.fullAvailableBalance, depositCurrency);
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return false;
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}
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return true;
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});
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} else if (isEVMCompatibleChain(wallet.type)) {
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final currency = depositCurrency;
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final balanceCurrency = wallet.balance.keys.firstWhereOrNull(
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(c) =>
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c.title == depositCurrency.title &&
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(c.tag == depositCurrency.tag || c.tag == depositCurrency.title),
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);
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final balanceForCurrency =
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balanceCurrency != null ? wallet.balance[balanceCurrency] : null;
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if (depositCurrency == currency && balanceForCurrency != null) {
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depositAvailableAmount = _appStore.amountParsingProxy
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.getDisplayCryptoStringFromBigInt(
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balanceForCurrency.fullAvailableBalance, balanceCurrency!);
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}
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} else {
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final currency = depositCurrency;
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final amount = _appStore.amountParsingProxy.getDisplayCryptoString(
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(await unspentCoinsListViewModel.getSendingBalance(UnspentCoinType.any)), depositCurrency);
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if(depositCurrency == currency) {
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depositAvailableAmount = amount;
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}
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}
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}
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void showFiatCurrencyPicker(BuildContext context) {
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showPopUp<void>(
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context: context,
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builder: (_) => CurrencyPicker(
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key: ValueKey('send_page_currency_picker_dialog_button_key'),
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selectedAtIndex: FiatCurrency.all.indexOf(fiat),
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items: FiatCurrency.all,
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hintText: S.of(context).search_currency,
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onItemSelected: (Currency cur) async {
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_settingsStore.fiatCurrency = (cur as FiatCurrency);
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},
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),
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);
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}
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bool useSameWalletAddress(CryptoCurrency currency) =>
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currency == wallet.currency ||
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(currency == CryptoCurrency.btcln && wallet.currency == CryptoCurrency.btc && wallet.isSoftwareWallet) ||
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(currency.tag != null && currency.tag == wallet.currency.tag) ||
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currency.tag == wallet.currency.title;
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bool get isElectrumWallet => [
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WalletType.bitcoin,
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WalletType.litecoin,
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WalletType.bitcoinCash,
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WalletType.dogecoin
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].contains(wallet.type);
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bool get hideAddressAfterExchange =>
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[WalletType.monero, WalletType.wownero].contains(wallet.type);
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bool _useTorOnly;
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final ExchangeTemplateStore _exchangeTemplateStore;
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final TradesStore tradesStore;
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final SharedPreferences sharedPreferences;
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// Hash Bags: trimmed to Trocador only. Trocador's aggregator already fronts
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// ChangeNow, LetsExchange, Exolix, StealthEx, FixedFloat, Quantex, etc.,
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// letting us collect markup as the affiliate. The individual provider
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// implementations were deleted; restore them from Cake Wallet upstream and
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// register Such Software affiliate keys per provider before re-adding any.
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List<ExchangeProvider> get _allProviders => [
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TrocadorExchangeProvider(
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useTorOnly: _useTorOnly, providerStates: _settingsStore.trocadorProviderStates),
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];
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@observable
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ExchangeProvider? provider;
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@observable
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ExchangeProvider? providerDisplay;
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/// Maps in dart are not sorted by default
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/// SplayTreeMap is a map sorted by keys
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/// will use it to sort available providers
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/// based on the rate they yield for the current trade
|
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///
|
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///
|
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/// initialize with descending comparator
|
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/// since we want largest rate first
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final SplayTreeMap<double, ExchangeProvider> _sortedAvailableProviders =
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SplayTreeMap<double, ExchangeProvider>((double a, double b) => b.compareTo(a));
|
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final List<ExchangeProvider> _tradeAvailableProviders = [];
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Map<ExchangeProvider, Limits?> _providerLimits = {};
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@observable
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ObservableList<ExchangeProvider> selectedProviders;
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|
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@observable
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List<ExchangeProvider> providerList;
|
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|
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@observable
|
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CryptoCurrency depositCurrency;
|
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|
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@observable
|
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CryptoCurrency receiveCurrency;
|
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|
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@observable
|
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LimitsState limitsState;
|
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|
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@observable
|
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ExchangeTradeState tradeState;
|
||
|
||
@observable
|
||
String _depositAmount;
|
||
|
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@computed
|
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String get depositAmount =>
|
||
_depositAmount == "..."? _depositAmount:amountParsingProxy.getDisplayCryptoAmount(_depositAmount, depositCurrency);
|
||
|
||
@computed
|
||
String get depositAmountCanonical => _depositAmount;
|
||
|
||
@observable
|
||
String _receiveAmount;
|
||
|
||
@computed
|
||
String get receiveAmount =>
|
||
_receiveAmount == "..." ? _receiveAmount:amountParsingProxy.getDisplayCryptoAmount(_receiveAmount, receiveCurrency);
|
||
|
||
@action
|
||
// only set canonical formated amounts here;
|
||
void setCanonicalReceiveAmount(String value) => _receiveAmount = value;
|
||
|
||
@observable
|
||
String depositAddress;
|
||
|
||
@observable
|
||
String receiveAddress;
|
||
|
||
@observable
|
||
String? receiveAddressDisplayName;
|
||
|
||
@observable
|
||
bool isDepositAddressEnabled;
|
||
|
||
@observable
|
||
bool isReceiveAmountEntered;
|
||
|
||
@observable
|
||
bool isReceiveAmountEditable;
|
||
|
||
@observable
|
||
bool isFixedRateMode;
|
||
|
||
@observable
|
||
bool isSendAllEnabled;
|
||
|
||
@observable
|
||
Limits limits;
|
||
|
||
@observable
|
||
bool tradeStarted = false;
|
||
|
||
@observable
|
||
bool isSendFromExternal = false;
|
||
|
||
@computed
|
||
SyncStatus get status => wallet.syncStatus;
|
||
|
||
@computed
|
||
ObservableList<ExchangeTemplate> get templates => _exchangeTemplateStore.templates;
|
||
|
||
@computed
|
||
List<WalletContact> get walletContactsToShow => contactListViewModel.walletContacts
|
||
.where((element) => element.type == receiveCurrency)
|
||
.toList();
|
||
|
||
@computed
|
||
List<WalletContact> get refundWalletContactsToShow => contactListViewModel.walletContacts
|
||
.where((element) => element.type == depositCurrency)
|
||
.toList();
|
||
|
||
@computed
|
||
Future<List<WalletInfo>> get receiveWallets async {
|
||
WalletType? type;
|
||
type = cryptoCurrencyOrTokenToWalletType(receiveCurrency);
|
||
if (type == null) {
|
||
type = cryptoCurrencyOrTokenToWalletType(CryptoCurrency.fromString(receiveCurrency.tag ?? ""));
|
||
}
|
||
|
||
return await WalletInfo.selectList("type = ?", [type!.index]);
|
||
}
|
||
|
||
Future<List<WalletInfoAddressInfo>> addressesForAccountsWallet(WalletInfo wallet) async {
|
||
final List<WalletInfoAddressInfo> ret = [];
|
||
final addresses = await wallet.getAddressInfos();
|
||
for (var list in addresses.values) {
|
||
// we only want the "primary" account addresses - those that contain account names.
|
||
ret.addAll(list.where((item) => item.label.split(" ").length > 1));
|
||
}
|
||
return ret;
|
||
}
|
||
|
||
@computed
|
||
Future<List<WalletInfo>> get depositWallets async {
|
||
WalletType? type;
|
||
type = cryptoCurrencyOrTokenToWalletType(depositCurrency);
|
||
if (type == null) {
|
||
try {
|
||
type = cryptoCurrencyOrTokenToWalletType(CryptoCurrency.fromString(depositCurrency.tag ?? ""));
|
||
} catch (_) {}
|
||
}
|
||
|
||
if (type != null) {
|
||
return await WalletInfo.selectList("type = ?", [type.index]);
|
||
}
|
||
|
||
return await WalletInfo.getAll();
|
||
}
|
||
|
||
@action
|
||
bool checkIfWalletIsAnInternalWallet(String address) {
|
||
final walletContactList =
|
||
walletContactsToShow.where((element) => element.address == address).toList();
|
||
|
||
return walletContactList.isNotEmpty;
|
||
}
|
||
|
||
@computed
|
||
bool get shouldDisplayTOTP2FAForExchangesToInternalWallet =>
|
||
_settingsStore.shouldRequireTOTP2FAForExchangesToInternalWallets;
|
||
|
||
@computed
|
||
bool get shouldDisplayTOTP2FAForExchangesToExternalWallet =>
|
||
_settingsStore.shouldRequireTOTP2FAForExchangesToExternalWallets;
|
||
|
||
@computed
|
||
String? get balanceDisplay {
|
||
CryptoCurrency? balanceCurrency;
|
||
if (isEVMCompatibleChain(wallet.type)) {
|
||
balanceCurrency = wallet.balance.keys.firstWhereOrNull(
|
||
(c) =>
|
||
c.title == depositCurrency.title &&
|
||
(c.tag == depositCurrency.tag || c.tag == depositCurrency.title),
|
||
);
|
||
} else {
|
||
balanceCurrency = depositCurrency;
|
||
}
|
||
final bal = balanceCurrency != null ? wallet.balance[balanceCurrency]?.fullAvailableBalance : null;
|
||
if (bal == null) return null;
|
||
return amountParsingProxy.getDisplayCryptoStringFromBigInt(
|
||
bal, balanceCurrency ?? depositCurrency);
|
||
}
|
||
|
||
//* Still open to further optimize these checks
|
||
//* It works but can be made better
|
||
@action
|
||
bool shouldDisplayTOTP() {
|
||
final isInternalWallet = checkIfWalletIsAnInternalWallet(receiveAddress);
|
||
|
||
if (isInternalWallet) {
|
||
return shouldDisplayTOTP2FAForExchangesToInternalWallet;
|
||
} else {
|
||
return shouldDisplayTOTP2FAForExchangesToExternalWallet;
|
||
}
|
||
}
|
||
|
||
@computed
|
||
bool get decentralizedExchangesPromptDismissed => _settingsStore.decentralizedExchangesPromptDismissed;
|
||
|
||
@action
|
||
void dismissDecentralizedExchangesPrompt() {
|
||
_settingsStore.decentralizedExchangesPromptDismissed = true;
|
||
}
|
||
|
||
@computed
|
||
TransactionPriority get transactionPriority {
|
||
final priority = _settingsStore.getPriority(wallet.type, chainId: wallet.chainId);
|
||
|
||
if (priority == null) {
|
||
throw Exception('Unexpected type ${wallet.type.toString()}');
|
||
}
|
||
|
||
return priority;
|
||
}
|
||
|
||
bool get hasAllAmount {
|
||
if ([
|
||
WalletType.monero,
|
||
WalletType.bitcoin,
|
||
WalletType.litecoin,
|
||
WalletType.bitcoinCash,
|
||
WalletType.dogecoin,
|
||
].contains(wallet.type)) return (depositCurrency == wallet.currency);
|
||
|
||
if (!isEVMCompatibleChain(wallet.type)) return false;
|
||
|
||
if (depositCurrency == wallet.currency) return true;
|
||
|
||
return wallet.balance.keys.any((c) =>
|
||
c.title == depositCurrency.title &&
|
||
(c.tag == depositCurrency.tag || c.tag == depositCurrency.title));
|
||
}
|
||
|
||
bool get isMoneroWallet => wallet.type == WalletType.monero;
|
||
|
||
@observable
|
||
ObservableList<CryptoCurrency> receiveCurrencies;
|
||
|
||
@observable
|
||
ObservableList<CryptoCurrency> depositCurrencies;
|
||
|
||
final AppStore _appStore;
|
||
SettingsStore get _settingsStore => _appStore.settingsStore;
|
||
|
||
final ContactListViewModel contactListViewModel;
|
||
|
||
final UnspentCoinsListViewModel unspentCoinsListViewModel;
|
||
|
||
final FeesViewModel feesViewModel;
|
||
|
||
@observable
|
||
double bestRate = 0.0;
|
||
|
||
@computed
|
||
bool get useSatoshiDeposit => _appStore.amountParsingProxy.useSatoshi(depositCurrency);
|
||
|
||
@computed
|
||
bool get useSatoshisReceive => _appStore.amountParsingProxy.useSatoshi(receiveCurrency);
|
||
|
||
@computed
|
||
AmountParsingProxy get amountParsingProxy => _appStore.amountParsingProxy;
|
||
|
||
@observable
|
||
ExchangeProvider? bestRateProvider;
|
||
|
||
@observable
|
||
ExchangeProvider? forcedProvider;
|
||
|
||
@action
|
||
void setForcedProvider(ExchangeProvider? provider) {
|
||
forcedProvider = provider;
|
||
forcedProviderRate = 0.0;
|
||
calculateForcedProviderRate();
|
||
}
|
||
|
||
WalletInfo? selectedAddressBookWallet;
|
||
|
||
@observable
|
||
double forcedProviderRate = 0.0;
|
||
|
||
late Timer bestRateSync;
|
||
|
||
final FiatConversionStore fiatConversionStore;
|
||
|
||
FiatCurrency get fiat => _settingsStore.fiatCurrency;
|
||
|
||
@computed
|
||
bool get isFiatDisabled => feesViewModel.isFiatDisabled;
|
||
|
||
@action
|
||
Future<void> fetchFiatPrice(CryptoCurrency currency) async {
|
||
if (fiatConversionStore.prices[currency] != null) {
|
||
return;
|
||
}
|
||
|
||
fiatConversionStore.prices[currency] = await FiatConversionService.fetchPrice(
|
||
crypto: currency,
|
||
fiat: fiat,
|
||
torOnly: _settingsStore.fiatApiMode == FiatApiMode.torOnly,
|
||
);
|
||
}
|
||
|
||
@computed
|
||
String get receiveAmountFiatFormatted {
|
||
var amount = '0.00';
|
||
try {
|
||
if (_receiveAmount.isNotEmpty) {
|
||
if (fiatConversionStore.prices[receiveCurrency] == null) return '';
|
||
|
||
amount = calculateFiatAmount(
|
||
price: fiatConversionStore.prices[receiveCurrency]!,
|
||
cryptoAmount: _receiveAmount,
|
||
);
|
||
}
|
||
} catch (_) {
|
||
log('Error calculating receive amount fiat formatted: $_');
|
||
}
|
||
return isFiatDisabled ? '' : '$amount';
|
||
}
|
||
|
||
@computed
|
||
String get depositAmountFiatFormatted {
|
||
var amount = '0.00';
|
||
try {
|
||
if (_depositAmount.isNotEmpty) {
|
||
if (fiatConversionStore.prices[depositCurrency] == null) return '';
|
||
|
||
amount = calculateFiatAmount(
|
||
price: fiatConversionStore.prices[depositCurrency]!,
|
||
cryptoAmount: _depositAmount,
|
||
);
|
||
}
|
||
} catch (_) {
|
||
log('Error calculating deposit amount fiat formatted: $_');
|
||
}
|
||
return isFiatDisabled ? '' : '$amount';
|
||
}
|
||
|
||
@computed
|
||
String get receiveAmountFiat {
|
||
var amount = '';
|
||
try {
|
||
if (_receiveAmount.isNotEmpty) {
|
||
if (fiatConversionStore.prices[receiveCurrency] == null) return '';
|
||
|
||
amount = calculateFiatAmount(
|
||
price: fiatConversionStore.prices[receiveCurrency]!,
|
||
cryptoAmount: _receiveAmount,
|
||
raw: true);
|
||
}
|
||
} catch (_) {
|
||
log('Error calculating receive amount fiat formatted: $_');
|
||
}
|
||
return amount;
|
||
}
|
||
|
||
@computed
|
||
String get depositAmountFiat {
|
||
var amount = '';
|
||
try {
|
||
if (_depositAmount.isNotEmpty) {
|
||
if (fiatConversionStore.prices[depositCurrency] == null) return '';
|
||
|
||
amount = calculateFiatAmount(
|
||
price: fiatConversionStore.prices[depositCurrency]!,
|
||
cryptoAmount: _depositAmount,
|
||
raw: true);
|
||
}
|
||
} catch (_) {
|
||
log('Error calculating deposit amount fiat formatted: $_');
|
||
}
|
||
return amount;
|
||
}
|
||
|
||
String roundedDepositAmount(int digits) {
|
||
if (depositAmount.split(".").last.length <= digits) {
|
||
return depositAmount;
|
||
}
|
||
try {
|
||
return double.parse(depositAmount).toStringAsPrecision(digits);
|
||
} catch(e) {
|
||
return "0";
|
||
}
|
||
}
|
||
|
||
String roundedReceiveAmount(int digits) {
|
||
if (receiveAmount.split(".").last.length <= digits) {
|
||
return receiveAmount;
|
||
}
|
||
try {
|
||
return double.parse(receiveAmount).toStringAsPrecision(digits);
|
||
} catch(e) {
|
||
return "0";
|
||
}
|
||
}
|
||
|
||
String roundedReceiveAmountFiat(int digits) {
|
||
if (receiveAmountFiat.split(".").last.length <= digits) {
|
||
return receiveAmountFiat;
|
||
}
|
||
|
||
return double.tryParse(receiveAmountFiat)?.toStringAsPrecision(digits) ?? '0.00';
|
||
}
|
||
|
||
String roundedDepositAmountFiat(int digits) {
|
||
if (depositAmountFiat.split(".").last.length <= digits) {
|
||
return depositAmountFiat;
|
||
}
|
||
|
||
return double.tryParse(depositAmountFiat)?.toStringAsPrecision(digits) ?? '0.00';
|
||
}
|
||
|
||
@action
|
||
void changeDepositCurrency({required CryptoCurrency currency}) {
|
||
final previousCurrency = depositCurrency;
|
||
final wasSendAllEnabled = isSendAllEnabled;
|
||
|
||
depositCurrency = currency;
|
||
isFixedRateMode = false;
|
||
isDepositAddressEnabled = !useSameWalletAddress(depositCurrency);
|
||
|
||
if (previousCurrency != currency) {
|
||
_onPairChange(clearBoth: wasSendAllEnabled);
|
||
}
|
||
fetchFiatPrice(currency);
|
||
updateDepositAvailableAmount();
|
||
}
|
||
|
||
@action
|
||
void changeReceiveCurrency({required CryptoCurrency currency}) {
|
||
final previousCurrency = receiveCurrency;
|
||
|
||
if (!(currency.tag == receiveCurrency.tag ||
|
||
currency.tag == receiveCurrency.title ||
|
||
currency.title == receiveCurrency.tag ||
|
||
currency == receiveCurrency)) {
|
||
receiveAddress = "";
|
||
}
|
||
|
||
receiveCurrency = currency;
|
||
isFixedRateMode = false;
|
||
isDepositAddressEnabled = !useSameWalletAddress(depositCurrency);
|
||
|
||
if (previousCurrency != currency) {
|
||
_onPairChange();
|
||
}
|
||
fetchFiatPrice(currency);
|
||
}
|
||
|
||
@action
|
||
Future<void> changeReceiveAmount({required String amount}) async {
|
||
amount = amountParsingProxy.getCanonicalCryptoAmount(amount, receiveCurrency);
|
||
|
||
_receiveAmount = amount;
|
||
|
||
if (amount.isEmpty) {
|
||
_depositAmount = '';
|
||
_receiveAmount = '';
|
||
return;
|
||
}
|
||
|
||
final _enteredAmount = double.tryParse(_receiveAmount.replaceAll(',', '.')) ?? 0;
|
||
|
||
if (bestRate == 0) {
|
||
_depositAmount = "...";
|
||
|
||
await calculateBestRate();
|
||
}
|
||
|
||
final amount_ = _enteredAmount / (forcedProvider == null ? bestRate : forcedProviderRate);
|
||
_depositAmount = amount_.toString().withMaxDecimals(depositCurrency.decimals);
|
||
}
|
||
|
||
@action
|
||
void setReceiveAmountFromFiat({required String fiatAmount}) {
|
||
final _enteredAmount = double.tryParse(fiatAmount.replaceAll(',', '.')) ?? 0.0;
|
||
final price = fiatConversionStore.prices[receiveCurrency];
|
||
if (price == null || price == 0.0) return;
|
||
|
||
final crypto = _enteredAmount / price;
|
||
final _receiveAmountTmp = crypto.toString().withMaxDecimals(receiveCurrency.decimals);
|
||
if (_receiveAmount != _receiveAmountTmp) {
|
||
changeReceiveAmount(amount: _receiveAmountTmp);
|
||
}
|
||
}
|
||
|
||
@action
|
||
void setDepositAmountFromFiat({required String fiatAmount}) {
|
||
final _enteredAmount = double.tryParse(fiatAmount.replaceAll(',', '.')) ?? 0.0;
|
||
final price = fiatConversionStore.prices[depositCurrency];
|
||
if (price == null || price == 0.0) return;
|
||
|
||
final crypto = _enteredAmount / price;
|
||
final depositAmountTmp = crypto.toString().withMaxDecimals(depositCurrency.decimals);
|
||
if (_depositAmount != depositAmountTmp) {
|
||
changeDepositAmount(amount: depositAmountTmp, isCanonical: true);
|
||
}
|
||
}
|
||
|
||
@action
|
||
Future<void> changeDepositAmount({required String amount, bool isCanonical = false}) async {
|
||
_depositAmount = isCanonical ? amount.replaceAll(',', '.') : _appStore.amountParsingProxy
|
||
.getCanonicalCryptoAmount(amount.replaceAll(',', '.'), depositCurrency);
|
||
|
||
if (amount.isEmpty) {
|
||
_depositAmount = '';
|
||
_receiveAmount = '';
|
||
return;
|
||
}
|
||
|
||
/// For fixed-rate transactions, we don't want to recalculate receive amount
|
||
/// as it should remain exactly what the user set
|
||
if (isFixedRateMode) return;
|
||
|
||
final _enteredAmount = double.tryParse(_depositAmount) ?? 0;
|
||
|
||
/// in case the best rate was not calculated yet
|
||
if (bestRate == 0) {
|
||
_receiveAmount = "...";
|
||
|
||
await calculateBestRate();
|
||
}
|
||
|
||
final amount_ = _enteredAmount * (forcedProvider == null ? bestRate : forcedProviderRate);
|
||
_receiveAmount = amount_.toString().withMaxDecimals(receiveCurrency.decimals);
|
||
}
|
||
|
||
bool checkIfInputMeetsMinOrMaxCondition(String input) {
|
||
final _enteredAmount = double.tryParse(input.replaceAll(',', '.')) ?? 0;
|
||
double minLimit = limits.min ?? 0;
|
||
double? maxLimit = limits.max;
|
||
|
||
if (_enteredAmount < minLimit) return false;
|
||
|
||
if (maxLimit != null && _enteredAmount > maxLimit) return false;
|
||
|
||
return true;
|
||
}
|
||
|
||
Future<void> calculateForcedProviderRate() async {
|
||
if (forcedProvider == null || depositCurrency == receiveCurrency) {
|
||
forcedProviderRate = 0.0;
|
||
return;
|
||
}
|
||
|
||
final amount = double.tryParse(isFixedRateMode ? _receiveAmount : _depositAmount) ??
|
||
initialAmountByAssets(isFixedRateMode ? receiveCurrency : depositCurrency);
|
||
|
||
forcedProviderRate = await forcedProvider!.fetchRate(
|
||
from: depositCurrency,
|
||
to: receiveCurrency,
|
||
amount: amount,
|
||
isFixedRateMode: isFixedRateMode,
|
||
isReceiveAmount: isFixedRateMode);
|
||
}
|
||
|
||
bool _excludeProviderForSwapAll(ExchangeProvider provider) =>
|
||
isSendAllEnabled &&
|
||
(provider.description == ExchangeProviderDescription.swapsXyz ||
|
||
provider.description == ExchangeProviderDescription.nearIntents);
|
||
|
||
Future<void> calculateBestRate() async {
|
||
if (depositCurrency == receiveCurrency) {
|
||
bestRate = 0.0;
|
||
bestRateProvider = null;
|
||
return;
|
||
}
|
||
final amount = double.tryParse(isFixedRateMode ? _receiveAmount : _depositAmount) ??
|
||
initialAmountByAssets(isFixedRateMode ? receiveCurrency : depositCurrency);
|
||
|
||
final validProvidersForAmount = _tradeAvailableProviders.where((provider) {
|
||
if (_excludeProviderForSwapAll(provider)) return false;
|
||
|
||
final limits = _providerLimits[provider];
|
||
|
||
if (limits == null) return false;
|
||
if (limits.min != null && amount < limits.min!) return false;
|
||
if (limits.max != null && amount > limits.max!) return false;
|
||
|
||
return true;
|
||
}).toList();
|
||
|
||
final _providers = validProvidersForAmount
|
||
.where((element) => !isFixedRateMode || element.supportsFixedRate)
|
||
.toList();
|
||
|
||
final result = await Future.wait<double>(
|
||
_providers.map(
|
||
(element) => element
|
||
.fetchRate(
|
||
from: depositCurrency,
|
||
to: receiveCurrency,
|
||
amount: amount,
|
||
isFixedRateMode: isFixedRateMode,
|
||
isReceiveAmount: isFixedRateMode)
|
||
.timeout(
|
||
Duration(seconds: 7),
|
||
onTimeout: () => 0.0,
|
||
),
|
||
),
|
||
);
|
||
|
||
// We'll use a new SplayTreeMap to avoid concurrent modification issues
|
||
final newSortedProviders =
|
||
SplayTreeMap<double, ExchangeProvider>((double a, double b) => b.compareTo(a));
|
||
|
||
for (int i = 0; i < result.length; i++) {
|
||
if (result[i] != 0) {
|
||
/// add this provider as its valid for this trade
|
||
try {
|
||
newSortedProviders[result[i]] = _providers[i];
|
||
} catch (e) {
|
||
// will throw "Concurrent modification during iteration" error if modified at the same
|
||
// time [createTrade] is called, as this is not a normal map, but a sorted map
|
||
}
|
||
} else {
|
||
printV('calculateBestRate: ${_providers[i].title} returned rate=0');
|
||
}
|
||
}
|
||
|
||
// Replace the old map with the new one
|
||
_sortedAvailableProviders.clear();
|
||
_sortedAvailableProviders.addAll(newSortedProviders);
|
||
|
||
if (_sortedAvailableProviders.isNotEmpty) {
|
||
bestRate = _sortedAvailableProviders.keys.first;
|
||
bestRateProvider = _sortedAvailableProviders.values.first;
|
||
}
|
||
}
|
||
|
||
@action
|
||
Future<void> loadLimits() async {
|
||
if (depositCurrency == receiveCurrency) {
|
||
limitsState = LimitsLoadedSuccessfully(limits: Limits(min: 0, max: 0));
|
||
return;
|
||
}
|
||
if (selectedProviders.isEmpty) return;
|
||
|
||
limitsState = LimitsIsLoading();
|
||
|
||
final from = isFixedRateMode ? receiveCurrency : depositCurrency;
|
||
final to = isFixedRateMode ? depositCurrency : receiveCurrency;
|
||
|
||
double? lowestMin = double.maxFinite;
|
||
double? highestMax = 0.0;
|
||
|
||
try {
|
||
final futures = selectedProviders
|
||
.where((provider) => providerList.contains(provider))
|
||
.map((provider) async {
|
||
final limits = await provider
|
||
.fetchLimits(
|
||
from: from,
|
||
to: to,
|
||
isFixedRateMode: isFixedRateMode,
|
||
)
|
||
.onError((error, stackTrace) => null)
|
||
.timeout(
|
||
Duration(seconds: 7),
|
||
onTimeout: () => null,
|
||
);
|
||
return MapEntry(provider, limits);
|
||
}).toList();
|
||
|
||
final entries = await Future.wait(futures);
|
||
_providerLimits = Map.fromEntries(entries);
|
||
|
||
_providerLimits.values
|
||
.whereType<Limits>()
|
||
.forEach((tempLimits) {
|
||
if (lowestMin != null && (tempLimits.min ?? -1) < lowestMin!) {
|
||
lowestMin = tempLimits.min;
|
||
}
|
||
|
||
if (highestMax != null && (tempLimits.max ?? double.maxFinite) > highestMax!) {
|
||
highestMax = tempLimits.max;
|
||
}
|
||
});
|
||
} on ConcurrentModificationError {
|
||
/// if user changed the selected providers while fetching limits
|
||
/// then delay the fetching limits a bit and try again
|
||
///
|
||
/// this is because the limitation of collections that
|
||
/// you can't modify it while iterating through it
|
||
Future.delayed(Duration(milliseconds: 200), loadLimits);
|
||
}
|
||
|
||
if (lowestMin != double.maxFinite) {
|
||
limits = Limits(min: lowestMin, max: highestMax);
|
||
limitsState = LimitsLoadedSuccessfully(limits: limits);
|
||
} else {
|
||
limitsState = LimitsLoadedFailure(error: 'Limits loading failed');
|
||
}
|
||
|
||
calculateBestRate();
|
||
}
|
||
|
||
@action
|
||
Future<void> createTrade() async {
|
||
if (isSendAllEnabled) {
|
||
await calculateDepositAllAmount();
|
||
final amount = double.tryParse(_depositAmount);
|
||
|
||
if (limits.min != null && amount != null && amount < limits.min!) {
|
||
tradeState = TradeIsCreatedFailure(
|
||
title: S.current.trade_not_created,
|
||
error: S.current.amount_is_below_minimum_limit(limits.min!.toString()));
|
||
return;
|
||
}
|
||
}
|
||
|
||
if (depositCurrency == CryptoCurrency.btcln &&
|
||
depositAddress == wallet.walletAddresses.addressForExchange) {
|
||
final invoice = await bitcoin!.getLightningInvoice(wallet, BigInt.zero);
|
||
if (invoice != null) {
|
||
depositAddress = invoice;
|
||
}
|
||
}
|
||
|
||
if (receiveCurrency == CryptoCurrency.btcln &&
|
||
receiveAddress == wallet.walletAddresses.addressForExchange) {
|
||
final invoice = await bitcoin!.getLightningInvoice(wallet, BigInt.zero);
|
||
if (invoice != null) {
|
||
receiveAddress = invoice;
|
||
}
|
||
}
|
||
|
||
Map<double, ExchangeProvider> providers;
|
||
if (forcedProvider != null) {
|
||
providers = {forcedProviderRate: forcedProvider!};
|
||
} else {
|
||
providers = Map.fromEntries(
|
||
_sortedAvailableProviders.entries.where(
|
||
(e) => selectedProviders.contains(e.value),
|
||
),
|
||
);
|
||
}
|
||
|
||
// Ensure we have providers available before attempting to create trade
|
||
if (providers.isEmpty) {
|
||
await calculateBestRate();
|
||
if (forcedProvider != null) {
|
||
providers = {forcedProviderRate: forcedProvider!};
|
||
} else {
|
||
providers = Map.fromEntries(
|
||
_sortedAvailableProviders.entries.where(
|
||
(e) => selectedProviders.contains(e.value),
|
||
),
|
||
);
|
||
}
|
||
|
||
if (providers.isEmpty) {
|
||
ExchangeProviderLogger.logError(
|
||
provider: null,
|
||
function: 'createTrade',
|
||
error: 'No providers available for $depositCurrency->$receiveCurrency',
|
||
requestData: {
|
||
'from': depositCurrency.title,
|
||
'to': receiveCurrency.title,
|
||
'fromAmount': _depositAmount,
|
||
'toAmount': _receiveAmount,
|
||
},
|
||
);
|
||
tradeState = TradeIsCreatedFailure(
|
||
title: S.current.trade_not_created,
|
||
error: S.current.none_of_selected_providers_can_exchange);
|
||
return;
|
||
}
|
||
}
|
||
|
||
try {
|
||
if (selectedAddressBookWallet?.type == WalletType.bitcoin) {
|
||
final _walletAddresses = await selectedAddressBookWallet!.getAddresses();
|
||
|
||
// if receive currency is lightning pick the lightning address
|
||
// if normal bitcoin, then pick the segwit address
|
||
if (receiveCurrency == CryptoCurrency.btcln) {
|
||
final lightningAddressOfWallet =
|
||
_walletAddresses.entries.firstWhereOrNull((e) => e.value.contains("LN"))?.key;
|
||
if (lightningAddressOfWallet != null) {
|
||
receiveAddress = lightningAddressOfWallet;
|
||
}
|
||
}
|
||
if (receiveCurrency == CryptoCurrency.btc) {
|
||
final segwitAddressOfWallet =
|
||
_walletAddresses.entries.firstWhereOrNull((e) => e.value.contains("P2WPKH"))?.key;
|
||
if (segwitAddressOfWallet != null) {
|
||
receiveAddress = segwitAddressOfWallet;
|
||
}
|
||
}
|
||
}
|
||
|
||
// parse Lightning address to bolt11 invoice
|
||
if (receiveAddress.contains("@")) {
|
||
receiveAddress = await getBolt11FromLightingAddress(receiveAddress) ?? receiveAddress;
|
||
}
|
||
|
||
// snapshot of providers to avoid concurrent modification issues
|
||
final providersSnapshot = providers.values.toList();
|
||
final ratesSnapshot = providers.keys.toList();
|
||
|
||
for (var i = 0; i < providersSnapshot.length; i++) {
|
||
final provider = providersSnapshot[i];
|
||
final providerRate = ratesSnapshot[i];
|
||
|
||
printV('createTrade: trying provider=${provider.title}');
|
||
|
||
if (_excludeProviderForSwapAll(provider)) {
|
||
printV('Skipping Swaps.xyz or Near Intents for swap all');
|
||
continue;
|
||
}
|
||
// should not happen but just as an extra check
|
||
if (isFixedRateMode && provider.supportsFixedRate == false) {
|
||
continue;
|
||
}
|
||
|
||
// Skip Swaps.xyz when sending from external
|
||
if (isSendFromExternal &&
|
||
provider.description == ExchangeProviderDescription.swapsXyz) {
|
||
printV('Skipping Swaps.xyz for external send');
|
||
continue;
|
||
}
|
||
|
||
if (!(await provider.checkIsAvailable())) continue;
|
||
|
||
bestRate = providerRate;
|
||
bestRateProvider = provider;
|
||
|
||
await changeDepositAmount(amount: _depositAmount, isCanonical: true);
|
||
|
||
final request = TradeRequest(
|
||
fromCurrency: depositCurrency,
|
||
toCurrency: receiveCurrency,
|
||
fromAmount: _depositAmount.replaceAll(',', '.'),
|
||
toAmount: _receiveAmount.replaceAll(',', '.'),
|
||
refundAddress: depositAddress,
|
||
toAddress: receiveAddress,
|
||
isFixedRate: isFixedRateMode,
|
||
);
|
||
|
||
if (hideAddressAfterExchange) {
|
||
wallet.walletAddresses.hiddenAddresses.add(depositAddress);
|
||
await wallet.walletAddresses.saveAddressesInBox();
|
||
}
|
||
|
||
var amount = isFixedRateMode ? _receiveAmount : _depositAmount;
|
||
amount = amount.replaceAll(',', '.');
|
||
|
||
if (limitsState is LimitsLoadedSuccessfully) {
|
||
if (double.tryParse(amount) == null) {
|
||
printV('createTrade: ${provider.title} amount parse failed: "$amount"');
|
||
continue;
|
||
}
|
||
|
||
if (limits.min != null && double.parse(amount) < limits.min!) {
|
||
continue;
|
||
} else if (limits.max != null && double.parse(amount) > limits.max!) {
|
||
continue;
|
||
} else {
|
||
try {
|
||
tradeState = TradeIsCreating();
|
||
final trade = await provider.createTrade(
|
||
request: request,
|
||
isFixedRateMode: isFixedRateMode,
|
||
isSendAll: isSendAllEnabled,
|
||
);
|
||
trade.walletId = wallet.id;
|
||
trade.chainId = wallet.chainId;
|
||
trade.fromWalletAddress = wallet.walletAddresses.address;
|
||
|
||
final canCreateTrade = await isCanCreateTrade(trade);
|
||
if (!canCreateTrade.result) {
|
||
ExchangeProviderLogger.logError(
|
||
provider: provider.description,
|
||
function: 'createTrade',
|
||
error: canCreateTrade.errorMessage ?? 'isCanCreateTrade returned false',
|
||
requestData: {
|
||
'from': depositCurrency.title,
|
||
'to': receiveCurrency.title,
|
||
'fromAmount': _depositAmount,
|
||
'toAmount': _receiveAmount,
|
||
},
|
||
);
|
||
continue;
|
||
}
|
||
|
||
tradesStore.setTrade(trade);
|
||
if (trade.provider != ExchangeProviderDescription.thorChain) await trade.save();
|
||
tradeState = TradeIsCreatedSuccessfully(trade: trade);
|
||
|
||
/// return after the first successful trade
|
||
return;
|
||
} catch (e, s) {
|
||
ExchangeProviderLogger.logError(
|
||
provider: provider.description,
|
||
function: 'createTrade',
|
||
error: e,
|
||
stackTrace: s,
|
||
requestData: {
|
||
'from': depositCurrency.title,
|
||
'to': receiveCurrency.title,
|
||
'fromAmount': _depositAmount,
|
||
'toAmount': _receiveAmount,
|
||
'toAddress': receiveAddress,
|
||
'refundAddress': depositAddress,
|
||
},
|
||
);
|
||
continue;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/// if the code reached here then none of the providers succeeded
|
||
tradeState = TradeIsCreatedFailure(
|
||
title: S.current.trade_not_created,
|
||
error: S.current.none_of_selected_providers_can_exchange);
|
||
} on ConcurrentModificationError {
|
||
/// if create trade happened at the exact same time of the scheduled rate update
|
||
/// then delay the create trade a bit and try again
|
||
///
|
||
/// this is because the limitation of the SplayTreeMap that
|
||
/// you can't modify it while iterating through it
|
||
Future.delayed(Duration(milliseconds: 200), createTrade);
|
||
}
|
||
}
|
||
|
||
@action
|
||
void reset() {
|
||
_initialPairBasedOnWallet();
|
||
isReceiveAmountEntered = false;
|
||
_depositAmount = '';
|
||
_receiveAmount = '';
|
||
depositAddress =
|
||
depositCurrency == wallet.currency ? wallet.walletAddresses.addressForExchange : '';
|
||
receiveAddress =
|
||
receiveCurrency == wallet.currency ? wallet.walletAddresses.addressForExchange : '';
|
||
isDepositAddressEnabled = !(depositCurrency == wallet.currency);
|
||
isFixedRateMode = false;
|
||
_onPairChange();
|
||
}
|
||
|
||
@action
|
||
void enableSendAllAmount() {
|
||
isSendAllEnabled = true;
|
||
isFixedRateMode = false;
|
||
calculateDepositAllAmount();
|
||
}
|
||
|
||
@action
|
||
void enableFixedRateMode() {
|
||
isSendAllEnabled = false;
|
||
isFixedRateMode = true;
|
||
}
|
||
|
||
@action
|
||
Future<void> calculateDepositAllAmount() async {
|
||
if ([
|
||
WalletType.litecoin,
|
||
WalletType.bitcoin,
|
||
WalletType.bitcoinCash,
|
||
WalletType.dogecoin,
|
||
].contains(wallet.type)) {
|
||
final priority = _settingsStore.getPriority(wallet.type)!;
|
||
|
||
final amount = depositCurrency == CryptoCurrency.btcln
|
||
// FIXME amount estimation is broken/impossible for ln, konsti suggested this
|
||
? (amountParsingProxy
|
||
.parseCryptoString(depositAvailableAmount, depositCurrency).toInt() - 10)
|
||
: await bitcoin!.estimateFakeSendAllTxAmount(
|
||
wallet,
|
||
priority,
|
||
coinTypeToSpendFrom: wallet.type == WalletType.litecoin
|
||
? UnspentCoinType.nonMweb
|
||
: depositCurrency == CryptoCurrency.btcln
|
||
? UnspentCoinType.lightning
|
||
: UnspentCoinType.any,
|
||
);
|
||
|
||
changeDepositAmount(amount: wallet.currency.formatAmount(BigInt.from(amount)), isCanonical: true);
|
||
} else if (wallet.type == WalletType.monero) {
|
||
final amount = await unspentCoinsListViewModel.getSendingBalance(UnspentCoinType.any);
|
||
|
||
changeDepositAmount(amount: wallet.currency.formatAmount(BigInt.from(amount)), isCanonical: true);
|
||
} else if (isEVMCompatibleChain(wallet.type)) {
|
||
final balanceCurrency = wallet.balance.keys.firstWhereOrNull(
|
||
(currency) =>
|
||
currency.title == depositCurrency.title &&
|
||
(currency.tag == depositCurrency.tag || currency.tag == depositCurrency.title),
|
||
);
|
||
|
||
final balanceForCurrency = balanceCurrency != null ? wallet.balance[balanceCurrency] : null;
|
||
if (balanceForCurrency == null) {
|
||
changeDepositAmount(amount: wallet.currency.formatAmount(BigInt.zero), isCanonical: true);
|
||
return;
|
||
}
|
||
|
||
final balanceAmount = _appStore.amountParsingProxy.getDisplayCryptoStringFromBigInt(balanceForCurrency.fullAvailableBalance, balanceCurrency!);
|
||
final balanceDouble = double.tryParse(balanceAmount.replaceAll(',', '.')) ?? 0.0;
|
||
if (balanceDouble <= 0) {
|
||
changeDepositAmount(amount: wallet.currency.formatAmount(BigInt.zero), isCanonical: true);
|
||
return;
|
||
}
|
||
|
||
final isNative = depositCurrency == wallet.currency;
|
||
|
||
if (!isNative) {
|
||
changeDepositAmount(amount: balanceAmount, isCanonical: true);
|
||
return;
|
||
}
|
||
|
||
try {
|
||
final priority = _settingsStore.getPriority(wallet.type, chainId: wallet.chainId);
|
||
await wallet.updateEstimatedFeesParams(priority);
|
||
|
||
String? feeString;
|
||
if (isEVMCompatibleChain(wallet.type)) {
|
||
feeString = evm!.getEVMNativeEstimatedFee(wallet);
|
||
}
|
||
|
||
if (feeString == null || feeString.isEmpty) {
|
||
changeDepositAmount(amount: balanceAmount, isCanonical: true);
|
||
return;
|
||
}
|
||
|
||
final balanceWei = balanceForCurrency.fullAvailableBalance;
|
||
final feeWei = BigInt.parse(feeString);
|
||
final amountAfterFeeWei = balanceWei > feeWei ? balanceWei - feeWei : BigInt.zero;
|
||
changeDepositAmount(
|
||
amount: wallet.currency.formatAmount(amountAfterFeeWei), isCanonical: true);
|
||
} catch (e) {
|
||
printV('Error calculating send all for EVM: $e');
|
||
changeDepositAmount(amount: balanceAmount, isCanonical: true);
|
||
}
|
||
}
|
||
}
|
||
|
||
@observable
|
||
String depositAvailableAmount = "";
|
||
|
||
@action
|
||
void reverseSwapDirection() {
|
||
final tmpAmount = _receiveAmount;
|
||
final tmpCurrency = depositCurrency;
|
||
changeDepositCurrency(currency: receiveCurrency);
|
||
changeReceiveCurrency(currency: tmpCurrency);
|
||
_depositAmount = tmpAmount;
|
||
}
|
||
|
||
void updateTemplate() => _exchangeTemplateStore.update();
|
||
|
||
void addTemplate(
|
||
{required String amount,
|
||
required String depositCurrency,
|
||
required String receiveCurrency,
|
||
required String provider,
|
||
required String depositAddress,
|
||
required String receiveAddress,
|
||
required String depositCurrencyTitle,
|
||
required String receiveCurrencyTitle}) =>
|
||
_exchangeTemplateStore.addTemplate(
|
||
amount: amount,
|
||
depositCurrency: depositCurrency,
|
||
receiveCurrency: receiveCurrency,
|
||
provider: provider,
|
||
depositAddress: depositAddress,
|
||
receiveAddress: receiveAddress,
|
||
depositCurrencyTitle: depositCurrencyTitle,
|
||
receiveCurrencyTitle: receiveCurrencyTitle);
|
||
|
||
void removeTemplate({required ExchangeTemplate template}) =>
|
||
_exchangeTemplateStore.remove(template: template);
|
||
|
||
void _onPairChange({bool clearBoth = false}) {
|
||
if (clearBoth) {
|
||
_depositAmount = '';
|
||
_receiveAmount = '';
|
||
if (!hasAllAmount) isSendAllEnabled = false;
|
||
} else {
|
||
if (isFixedRateMode) {
|
||
_depositAmount = '';
|
||
} else {
|
||
_receiveAmount = '';
|
||
}
|
||
}
|
||
bestRate = 0.0;
|
||
bestRateProvider = null;
|
||
_sortedAvailableProviders.clear();
|
||
loadLimits().then((_) {
|
||
if (clearBoth && hasAllAmount) {
|
||
calculateDepositAllAmount();
|
||
}
|
||
});
|
||
_setAvailableProviders();
|
||
}
|
||
|
||
void _initialPairBasedOnWallet() {
|
||
if (isEVMCompatibleChain(wallet.type)) {
|
||
depositCurrency = wallet.currency;
|
||
receiveCurrency = CryptoCurrency.xmr;
|
||
return;
|
||
}
|
||
|
||
switch (wallet.type) {
|
||
case WalletType.monero:
|
||
depositCurrency = CryptoCurrency.xmr;
|
||
receiveCurrency = CryptoCurrency.btc;
|
||
break;
|
||
case WalletType.bitcoin:
|
||
depositCurrency = CryptoCurrency.btc;
|
||
receiveCurrency = CryptoCurrency.xmr;
|
||
break;
|
||
case WalletType.litecoin:
|
||
depositCurrency = CryptoCurrency.ltc;
|
||
receiveCurrency = CryptoCurrency.xmr;
|
||
break;
|
||
case WalletType.bitcoinCash:
|
||
depositCurrency = CryptoCurrency.bch;
|
||
receiveCurrency = CryptoCurrency.xmr;
|
||
break;
|
||
case WalletType.dogecoin:
|
||
depositCurrency = CryptoCurrency.doge;
|
||
receiveCurrency = CryptoCurrency.xmr;
|
||
break;
|
||
case WalletType.ethereum:
|
||
depositCurrency = CryptoCurrency.eth;
|
||
receiveCurrency = CryptoCurrency.xmr;
|
||
break;
|
||
case WalletType.nano:
|
||
depositCurrency = CryptoCurrency.nano;
|
||
receiveCurrency = CryptoCurrency.xmr;
|
||
break;
|
||
case WalletType.banano:
|
||
depositCurrency = CryptoCurrency.banano;
|
||
receiveCurrency = CryptoCurrency.xmr;
|
||
break;
|
||
case WalletType.polygon:
|
||
depositCurrency = CryptoCurrency.maticpoly;
|
||
receiveCurrency = CryptoCurrency.xmr;
|
||
break;
|
||
case WalletType.base:
|
||
depositCurrency = CryptoCurrency.baseEth;
|
||
receiveCurrency = CryptoCurrency.xmr;
|
||
break;
|
||
case WalletType.arbitrum:
|
||
depositCurrency = CryptoCurrency.arbEth;
|
||
receiveCurrency = CryptoCurrency.xmr;
|
||
break;
|
||
case WalletType.bsc:
|
||
depositCurrency = CryptoCurrency.bnb;
|
||
receiveCurrency = CryptoCurrency.xmr;
|
||
break;
|
||
case WalletType.wownero:
|
||
depositCurrency = CryptoCurrency.wow;
|
||
receiveCurrency = CryptoCurrency.xmr;
|
||
break;
|
||
case WalletType.none:
|
||
break;
|
||
}
|
||
}
|
||
|
||
void _defineIsReceiveAmountEditable() {
|
||
isReceiveAmountEditable = true;
|
||
}
|
||
|
||
@action
|
||
void addExchangeProvider(ExchangeProvider provider) {
|
||
if (provider.description.isCentralized && forceDecentralizedExchanges) return;
|
||
if (!selectedProviders.contains(provider)) selectedProviders.add(provider);
|
||
if (providerList.contains(provider)) _tradeAvailableProviders.add(provider);
|
||
}
|
||
|
||
@action
|
||
void removeExchangeProvider(ExchangeProvider provider) {
|
||
selectedProviders.remove(provider);
|
||
_tradeAvailableProviders.remove(provider);
|
||
if (forcedProvider == provider) {
|
||
setForcedProvider(null);
|
||
}
|
||
}
|
||
|
||
@action
|
||
void saveSelectedProviders() {
|
||
_depositAmount = '';
|
||
_receiveAmount = '';
|
||
isFixedRateMode = false;
|
||
_defineIsReceiveAmountEditable();
|
||
bestRateProvider = null;
|
||
bestRate = 0.0;
|
||
loadLimits();
|
||
|
||
final Map<String, dynamic> exchangeProvidersSelection =
|
||
json.decode(sharedPreferences.getString(PreferencesKey.exchangeProvidersSelection) ?? "{}")
|
||
as Map<String, dynamic>;
|
||
|
||
for (var provider in providerList) {
|
||
exchangeProvidersSelection[provider.title] = selectedProviders.contains(provider);
|
||
}
|
||
|
||
sharedPreferences.setString(
|
||
PreferencesKey.exchangeProvidersSelection,
|
||
json.encode(exchangeProvidersSelection),
|
||
);
|
||
}
|
||
|
||
@action
|
||
Future<void> updateAllTrocadorProviderStates(TrocadorExchangeProvider trocadorProvider) async {
|
||
try {
|
||
var providers = await trocadorProvider.fetchProviders();
|
||
var providerNames = providers.map((e) => e.name).toList();
|
||
await _settingsStore.updateAllTrocadorProviderStates(providerNames);
|
||
} catch (e) {
|
||
printV('Error updating trocador provider states: $e');
|
||
}
|
||
}
|
||
|
||
bool get isAvailableInSelected {
|
||
return selectedProviders
|
||
.any((element) => element.isAvailable && providerList.contains(element));
|
||
}
|
||
|
||
@computed
|
||
bool get forceDecentralizedExchanges => _settingsStore.forceDecentralizedExchanges;
|
||
|
||
@action
|
||
void toggleForceDecentralizedExchanges() {
|
||
_settingsStore.forceDecentralizedExchanges = !_settingsStore.forceDecentralizedExchanges;
|
||
if(forceDecentralizedExchanges) {
|
||
final providers = selectedProviders.toList();
|
||
for (final provider in providers) {
|
||
if (forceDecentralizedExchanges && provider.description.isCentralized) {
|
||
removeExchangeProvider(provider);
|
||
}
|
||
}
|
||
} else {
|
||
for(final provider in providerList) {
|
||
if(!selectedProviders.contains(provider) && provider.description.isCentralized) {
|
||
addExchangeProvider(provider);
|
||
}
|
||
}
|
||
}
|
||
|
||
}
|
||
|
||
void _setAvailableProviders() {
|
||
_tradeAvailableProviders.clear();
|
||
|
||
_tradeAvailableProviders
|
||
.addAll(selectedProviders.where((provider) => providerList.contains(provider)));
|
||
}
|
||
|
||
void _setProviders() {
|
||
if (_settingsStore.exchangeStatus == ExchangeApiMode.torOnly)
|
||
providerList = _allProviders.where((provider) => provider.supportsOnionAddress).toList();
|
||
else
|
||
providerList = _allProviders;
|
||
}
|
||
|
||
int get depositMaxDigits => depositCurrency.decimals;
|
||
|
||
int get receiveMaxDigits => receiveCurrency.decimals;
|
||
|
||
Future<CreateTradeResult> isCanCreateTrade(Trade trade) async {
|
||
|
||
if (trade.provider == ExchangeProviderDescription.swapsXyz) {
|
||
|
||
final tradeFrom = trade.from;
|
||
|
||
if (tradeFrom == null) {
|
||
return CreateTradeResult(
|
||
result: false,
|
||
errorMessage: 'From currency is null',
|
||
);
|
||
}
|
||
|
||
final isNativeSupportedToken = walletTypes.contains(cryptoCurrencyOrTokenToWalletType(tradeFrom));
|
||
|
||
if (!isNativeSupportedToken) {
|
||
bool _isEthToken() =>
|
||
wallet.currency == CryptoCurrency.eth && tradeFrom.tag == CryptoCurrency.eth.title;
|
||
|
||
bool _isPolygonToken() =>
|
||
wallet.currency == CryptoCurrency.maticpoly &&
|
||
tradeFrom.tag == CryptoCurrency.maticpoly.tag;
|
||
|
||
bool _isBaseToken() =>
|
||
wallet.currency == CryptoCurrency.baseEth && tradeFrom.tag == CryptoCurrency.baseEth.tag;
|
||
|
||
bool _isTronToken() =>
|
||
wallet.currency == CryptoCurrency.trx && tradeFrom.tag == CryptoCurrency.trx.title;
|
||
|
||
bool _isSplToken() =>
|
||
wallet.currency == CryptoCurrency.sol && tradeFrom.tag == CryptoCurrency.sol.title;
|
||
|
||
bool isArbitrumToken() =>
|
||
wallet.currency == CryptoCurrency.arbEth && tradeFrom.tag == CryptoCurrency.arbEth.tag;
|
||
|
||
bool isBscToken() =>
|
||
wallet.currency == CryptoCurrency.bnb && tradeFrom.tag == CryptoCurrency.bnb.tag;
|
||
|
||
if(!(_isEthToken() || _isPolygonToken() || _isBaseToken() || _isTronToken() || _isSplToken() || isArbitrumToken() || isBscToken())) {
|
||
return CreateTradeResult(
|
||
result: false,
|
||
errorMessage: 'This token isn’t supported on the current wallet/network for Swaps.xyz. Switch to a supported wallet or asset',
|
||
);
|
||
}
|
||
}
|
||
|
||
}
|
||
|
||
if (trade.provider == ExchangeProviderDescription.thorChain) {
|
||
final payoutAddress = trade.payoutAddress ?? '';
|
||
final fromWalletAddress = trade.fromWalletAddress ?? '';
|
||
final tapRootPattern = RegExp(P2trAddress.regex.pattern);
|
||
|
||
if (tapRootPattern.hasMatch(payoutAddress) || tapRootPattern.hasMatch(fromWalletAddress)) {
|
||
return CreateTradeResult(
|
||
result: false,
|
||
errorMessage: S.current.thorchain_taproot_address_not_supported,
|
||
);
|
||
}
|
||
|
||
if ((trade.memo == null || trade.memo!.isEmpty)) {
|
||
return CreateTradeResult(
|
||
result: false,
|
||
errorMessage: 'Memo is required for Thorchain trade',
|
||
);
|
||
}
|
||
|
||
final currenciesToCheckPattern = RegExp('0x[0-9a-zA-Z]');
|
||
|
||
// Perform checks for payOutAddress
|
||
final isPayOutAddressAccordingToPattern = currenciesToCheckPattern.hasMatch(payoutAddress);
|
||
|
||
if (isPayOutAddressAccordingToPattern) {
|
||
final isPayOutAddressEOA = await _isExternallyOwnedAccountAddress(payoutAddress);
|
||
|
||
return CreateTradeResult(
|
||
result: isPayOutAddressEOA,
|
||
errorMessage:
|
||
!isPayOutAddressEOA ? S.current.thorchain_contract_address_not_supported : null,
|
||
);
|
||
}
|
||
|
||
// Perform checks for fromWalletAddress
|
||
final isFromWalletAddressAddressAccordingToPattern =
|
||
currenciesToCheckPattern.hasMatch(fromWalletAddress);
|
||
|
||
if (isFromWalletAddressAddressAccordingToPattern) {
|
||
final isFromWalletAddressEOA = await _isExternallyOwnedAccountAddress(fromWalletAddress);
|
||
|
||
return CreateTradeResult(
|
||
result: isFromWalletAddressEOA,
|
||
errorMessage:
|
||
!isFromWalletAddressEOA ? S.current.thorchain_contract_address_not_supported : null,
|
||
);
|
||
}
|
||
}
|
||
return CreateTradeResult(result: true);
|
||
}
|
||
|
||
String _normalizeReceiveCurrency(CryptoCurrency receiveCurrency) {
|
||
switch (receiveCurrency) {
|
||
case CryptoCurrency.eth:
|
||
return 'eth';
|
||
case CryptoCurrency.maticpoly:
|
||
return 'polygon';
|
||
default:
|
||
return receiveCurrency.tag ?? '';
|
||
}
|
||
}
|
||
|
||
Future<bool> _isExternallyOwnedAccountAddress(String receivingAddress) async {
|
||
final normalizedReceiveCurrency = _normalizeReceiveCurrency(receiveCurrency);
|
||
|
||
final isEOAAddress = !(await _isContractAddress(normalizedReceiveCurrency, receivingAddress));
|
||
return isEOAAddress;
|
||
}
|
||
|
||
Future<bool> _isContractAddress(String chainName, String contractAddress) async {
|
||
final uri = Uri.https(
|
||
'deep-index.moralis.io',
|
||
'/api/v2.2/erc20/metadata',
|
||
{
|
||
"chain": chainName,
|
||
"addresses": contractAddress,
|
||
},
|
||
);
|
||
|
||
try {
|
||
final response = await ProxyWrapper().get(
|
||
clearnetUri: uri,
|
||
headers: {
|
||
"Accept": "application/json",
|
||
"X-API-Key": secrets.moralisApiKey,
|
||
},
|
||
);
|
||
|
||
final decodedResponse = jsonDecode(response.body)[0] as Map<String, dynamic>;
|
||
|
||
final name = decodedResponse['name'] as String?;
|
||
|
||
bool isContractAddress = name!.isNotEmpty;
|
||
|
||
return isContractAddress;
|
||
} catch (e) {
|
||
printV(e);
|
||
return false;
|
||
}
|
||
}
|
||
|
||
// Adding user's Erc20 tokens to the list of currencies
|
||
|
||
@action
|
||
Future<void> _injectUserEthTokensIntoCurrencyLists() async {
|
||
final tokens = await TokenUtilities.loadEvmTokensForSwap();
|
||
final toAddReceive = <CryptoCurrency>[];
|
||
final toAddDeposit = <CryptoCurrency>[];
|
||
|
||
for (final token in tokens) {
|
||
if (!_listContainsToken(receiveCurrencies, token)) toAddReceive.add(token);
|
||
if (!_listContainsToken(depositCurrencies, token)) toAddDeposit.add(token);
|
||
}
|
||
|
||
if (toAddReceive.isNotEmpty) receiveCurrencies.addAll(toAddReceive);
|
||
if (toAddDeposit.isNotEmpty) depositCurrencies.addAll(toAddDeposit);
|
||
}
|
||
|
||
bool _listContainsToken(List<CryptoCurrency> list, Erc20Token token) {
|
||
return list.any((item) {
|
||
if (item is Erc20Token) {
|
||
return item.contractAddress.toLowerCase() == token.contractAddress.toLowerCase();
|
||
}
|
||
return item.title.toUpperCase() == token.symbol.toUpperCase() &&
|
||
(item.tag?.toUpperCase() == token.tag?.toUpperCase() || item.tag == null);
|
||
});
|
||
}
|
||
|
||
// Adding user's Solana tokens to the list of currencies
|
||
|
||
bool _listContainsSplToken(List<CryptoCurrency> list, SPLToken token) {
|
||
return list.any((item) {
|
||
if (item is SPLToken) {
|
||
return item.mintAddress.toLowerCase() == token.mintAddress.toLowerCase();
|
||
}
|
||
return item.title.toUpperCase() == token.symbol.toUpperCase() &&
|
||
(item.tag?.toUpperCase() == token.tag?.toUpperCase() || item.tag == null);
|
||
});
|
||
}
|
||
|
||
@action
|
||
Future<void> _injectUserSplTokensIntoCurrencyLists() async {
|
||
final tokens = await TokenUtilities.loadSolTokensForSwap();
|
||
final toAddReceive = <CryptoCurrency>[];
|
||
final toAddDeposit = <CryptoCurrency>[];
|
||
|
||
for (final token in tokens) {
|
||
if (!_listContainsSplToken(receiveCurrencies, token)) toAddReceive.add(token);
|
||
if (!_listContainsSplToken(depositCurrencies, token)) toAddDeposit.add(token);
|
||
}
|
||
|
||
if (toAddReceive.isNotEmpty) receiveCurrencies.addAll(toAddReceive);
|
||
if (toAddDeposit.isNotEmpty) depositCurrencies.addAll(toAddDeposit);
|
||
}
|
||
|
||
// Adding user's Tron tokens to the list of currencies
|
||
|
||
bool _listContainsTronToken(List<CryptoCurrency> list, TronToken token) {
|
||
return list.any((item) {
|
||
if (item is TronToken) {
|
||
return item.contractAddress.toLowerCase() == token.contractAddress.toLowerCase();
|
||
}
|
||
return item.title.toUpperCase() == token.symbol.toUpperCase() &&
|
||
(item.tag?.toUpperCase() == token.tag?.toUpperCase() || item.tag == null);
|
||
});
|
||
}
|
||
|
||
@action
|
||
Future<void> _injectUserTronTokensIntoCurrencyLists() async {
|
||
final tokens = await TokenUtilities.loadTronTokensForSwap();
|
||
final toAddReceive = <CryptoCurrency>[];
|
||
final toAddDeposit = <CryptoCurrency>[];
|
||
|
||
for (final token in tokens) {
|
||
if (!_listContainsTronToken(receiveCurrencies, token)) toAddReceive.add(token);
|
||
if (!_listContainsTronToken(depositCurrencies, token)) toAddDeposit.add(token);
|
||
}
|
||
|
||
if (toAddReceive.isNotEmpty) receiveCurrencies.addAll(toAddReceive);
|
||
if (toAddDeposit.isNotEmpty) depositCurrencies.addAll(toAddDeposit);
|
||
}
|
||
|
||
double initialAmountByAssets(CryptoCurrency ticker) {
|
||
final amount = switch (ticker) {
|
||
CryptoCurrency.trx => 1000,
|
||
CryptoCurrency.nano => 10,
|
||
CryptoCurrency.zano => 10,
|
||
CryptoCurrency.wow => 1000,
|
||
CryptoCurrency.ada => 1000,
|
||
CryptoCurrency.dash => 10,
|
||
CryptoCurrency.rune => 10,
|
||
_ => 1
|
||
};
|
||
return amount.toDouble();
|
||
}
|
||
}
|