| 1 | import 'dart:async'; |
| 2 | import 'dart:collection'; |
| 3 | import 'dart:convert'; |
| 4 | import 'dart:developer'; |
| 5 | |
| 6 | import 'package:bitcoin_base/bitcoin_base.dart'; |
| 7 | import 'package:cake_wallet/.secrets.g.dart' as secrets; |
| 8 | import 'package:cake_wallet/bitcoin/bitcoin.dart'; |
| 9 | import 'package:cake_wallet/core/amount_parsing_proxy.dart'; |
| 10 | import 'package:cake_wallet/core/create_trade_result.dart'; |
| 11 | import 'package:cake_wallet/core/fiat_conversion_service.dart'; |
| 12 | import 'package:cake_wallet/core/lightning_invoice_service.dart'; |
| 13 | import 'package:cake_wallet/core/utilities.dart'; |
| 14 | import 'package:cake_wallet/core/wallet_change_listener_view_model.dart'; |
| 15 | import 'package:cake_wallet/entities/calculate_fiat_amount.dart'; |
| 16 | import 'package:cake_wallet/entities/exchange_api_mode.dart'; |
| 17 | import 'package:cake_wallet/entities/fiat_api_mode.dart'; |
| 18 | import 'package:cake_wallet/entities/fiat_currency.dart'; |
| 19 | import 'package:cake_wallet/entities/preferences_key.dart'; |
| 20 | import 'package:cake_wallet/entities/wallet_contact.dart'; |
| 21 | import 'package:cake_wallet/exchange/exchange_provider_description.dart'; |
| 22 | import 'package:cake_wallet/exchange/exchange_template.dart'; |
| 23 | import 'package:cake_wallet/exchange/exchange_trade_state.dart'; |
| 24 | import 'package:cake_wallet/exchange/limits.dart'; |
| 25 | import 'package:cake_wallet/exchange/limits_state.dart'; |
| 26 | import 'package:cake_wallet/exchange/provider/chainflip_exchange_provider.dart'; |
| 27 | import 'package:cake_wallet/exchange/provider/jupiter_exchange_provider.dart'; |
| 28 | import 'package:cake_wallet/exchange/provider/letsexchange_exchange_provider.dart'; |
| 29 | import 'package:cake_wallet/exchange/provider/changenow_exchange_provider.dart'; |
| 30 | import 'package:cake_wallet/exchange/provider/exchange_provider.dart'; |
| 31 | import 'package:cake_wallet/exchange/provider/exolix_exchange_provider.dart'; |
| 32 | import 'package:cake_wallet/exchange/provider/near_Intents_exchange_provider.dart'; |
| 33 | import 'package:cake_wallet/exchange/provider/stealth_ex_exchange_provider.dart'; |
| 34 | import 'package:cake_wallet/exchange/provider/swapsxyz_exchange_provider.dart'; |
| 35 | import 'package:cake_wallet/exchange/provider/swaptrade_exchange_provider.dart'; |
| 36 | import 'package:cake_wallet/exchange/provider/trocador_exchange_provider.dart'; |
| 37 | import 'package:cake_wallet/exchange/provider/xoswap_exchange_provider.dart'; |
| 38 | import 'package:cake_wallet/exchange/trade.dart'; |
| 39 | import 'package:cake_wallet/exchange/trade_request.dart'; |
| 40 | import 'package:cake_wallet/generated/i18n.dart'; |
| 41 | import 'package:cake_wallet/new-ui/widgets/currency_picker/fiat_currency_picker_sheet.dart'; |
| 42 | import 'package:cake_wallet/store/app_store.dart'; |
| 43 | import 'package:cake_wallet/utils/exchange_provider_logger.dart'; |
| 44 | import 'package:cw_core/amount/amount_sanitizer.dart'; |
| 45 | import 'package:cw_core/amount/money.dart'; |
| 46 | import 'package:cw_core/amount/money_double.dart'; |
| 47 | import "package:cw_core/wallet_info.dart"; |
| 48 | import 'package:cake_wallet/store/dashboard/fiat_conversion_store.dart'; |
| 49 | import 'package:cake_wallet/store/dashboard/trades_store.dart'; |
| 50 | import 'package:cake_wallet/store/settings_store.dart'; |
| 51 | import 'package:cake_wallet/store/templates/exchange_template_store.dart'; |
| 52 | import 'package:cake_wallet/evm/evm.dart'; |
| 53 | import 'package:cake_wallet/reactions/wallet_connect.dart'; |
| 54 | import 'package:cake_wallet/utils/feature_flag.dart'; |
| 55 | import 'package:cake_wallet/utils/token_utilities.dart'; |
| 56 | import 'package:cake_wallet/view_model/contact_list/contact_list_view_model.dart'; |
| 57 | import 'package:cake_wallet/view_model/send/fees_view_model.dart'; |
| 58 | import 'package:cake_wallet/view_model/unspent_coins/unspent_coins_list_view_model.dart'; |
| 59 | import 'package:cw_core/crypto_amount_format.dart'; |
| 60 | import 'package:cw_core/crypto_currency.dart'; |
| 61 | import 'package:cw_core/currencies_with_memo.dart'; |
| 62 | import 'package:cw_core/erc20_token.dart'; |
| 63 | import 'package:cw_core/spl_token.dart'; |
| 64 | import 'package:cw_core/sync_status.dart'; |
| 65 | import 'package:cw_core/transaction_priority.dart'; |
| 66 | import 'package:cw_core/tron_token.dart'; |
| 67 | import 'package:cw_core/unspent_coin_type.dart'; |
| 68 | import 'package:cw_core/utils/print_verbose.dart'; |
| 69 | import 'package:cw_core/utils/proxy_wrapper.dart'; |
| 70 | import 'package:cw_core/wallet_type.dart'; |
| 71 | import 'package:flutter/material.dart'; |
| 72 | import 'package:mobx/mobx.dart'; |
| 73 | import 'package:shared_preferences/shared_preferences.dart'; |
| 74 | |
| 75 | part 'exchange_view_model.g.dart'; |
| 76 | |
| 77 | class ExchangeViewModel = ExchangeViewModelBase with _$ExchangeViewModel; |
| 78 | |
| 79 | abstract class ExchangeViewModelBase extends WalletChangeListenerViewModel with Store { |
| 80 | @override |
| 81 | void onWalletChange(wallet) { |
| 82 | // FIXME this caused a bug when switching wallet, i can't figure out why it's here? |
| 83 | // receiveCurrency = wallet.currency; |
| 84 | // depositCurrency = wallet.currency; |
| 85 | } |
| 86 | |
| 87 | final List<ReactionDisposer> _disposers = []; |
| 88 | |
| 89 | void dispose() { |
| 90 | bestRateSync.cancel(); |
| 91 | for (final disposer in _disposers) { |
| 92 | disposer(); |
| 93 | } |
| 94 | _disposers.clear(); |
| 95 | } |
| 96 | |
| 97 | ExchangeViewModelBase( |
| 98 | this._appStore, |
| 99 | this._exchangeTemplateStore, |
| 100 | this.tradesStore, |
| 101 | this.sharedPreferences, |
| 102 | this.contactListViewModel, |
| 103 | this.unspentCoinsListViewModel, |
| 104 | this.feesViewModel, |
| 105 | this.fiatConversionStore, |
| 106 | ) : isSendAllEnabled = false, |
| 107 | isFixedRateMode = false, |
| 108 | isReceiveAmountEntered = false, |
| 109 | _depositAmount = null, |
| 110 | _receiveAmount = null, |
| 111 | receiveAddress = '', |
| 112 | depositAddress = '', |
| 113 | isDepositAddressEnabled = false, |
| 114 | isReceiveAmountEditable = false, |
| 115 | _useTorOnly = false, |
| 116 | receiveCurrencies = ObservableList<CryptoCurrency>(), |
| 117 | depositCurrencies = ObservableList<CryptoCurrency>(), |
| 118 | limits = Limits(min: 0, max: 0), |
| 119 | tradeState = ExchangeTradeStateInitial(), |
| 120 | limitsState = LimitsInitialState(), |
| 121 | receiveCurrency = _appStore.wallet!.currency, |
| 122 | depositCurrency = _appStore.wallet!.currency, |
| 123 | providerList = [], |
| 124 | selectedProviders = ObservableList<ExchangeProvider>(), |
| 125 | super(appStore: _appStore) { |
| 126 | _useTorOnly = _settingsStore.exchangeStatus == ExchangeApiMode.torOnly; |
| 127 | _setProviders(); |
| 128 | const excludeDepositCurrencies = [CryptoCurrency.btt]; |
| 129 | const excludeReceiveCurrencies = [CryptoCurrency.btt]; |
| 130 | _initialPairBasedOnWallet(); |
| 131 | |
| 132 | unspentCoinsListViewModel.initialSetup().then((_) { |
| 133 | unspentCoinsListViewModel.resetUnspentCoinsInfoSelections(); |
| 134 | }); |
| 135 | |
| 136 | final Map<String, dynamic> exchangeProvidersSelection = |
| 137 | json.decode(sharedPreferences.getString(PreferencesKey.exchangeProvidersSelection) ?? "{}") |
| 138 | as Map<String, dynamic>; |
| 139 | |
| 140 | /// if the provider is not in the user settings (user's first time or newly added provider) |
| 141 | /// then use its default value decided by us |
| 142 | selectedProviders = ObservableList.of(providerList |
| 143 | .where((element) => |
| 144 | (!forceDecentralizedExchanges || !element.description.isCentralized) && |
| 145 | (exchangeProvidersSelection[element.title] == null |
| 146 | ? element.isEnabled |
| 147 | : (exchangeProvidersSelection[element.title] as bool))) |
| 148 | .toList()); |
| 149 | |
| 150 | _setAvailableProviders(); |
| 151 | |
| 152 | autorun((_) { |
| 153 | if (selectedProviders.any((provider) => provider is TrocadorExchangeProvider)) { |
| 154 | final trocadorProvider = |
| 155 | selectedProviders.firstWhere((provider) => provider is TrocadorExchangeProvider) |
| 156 | as TrocadorExchangeProvider; |
| 157 | |
| 158 | updateAllTrocadorProviderStates(trocadorProvider); |
| 159 | } |
| 160 | }); |
| 161 | |
| 162 | bestRateSync = Timer.periodic(Duration(seconds: 10), (timer) { |
| 163 | if (tradeState is! TradeIsCreating) { |
| 164 | calculateBestRate(); |
| 165 | } |
| 166 | }); |
| 167 | |
| 168 | isDepositAddressEnabled = !useSameWalletAddress(depositCurrency); |
| 169 | _depositAmount = null; |
| 170 | _receiveAmount = null; |
| 171 | receiveAddress = ''; |
| 172 | depositAddress = |
| 173 | useSameWalletAddress(depositCurrency) ? wallet.walletAddresses.addressForExchange : ''; |
| 174 | |
| 175 | _disposers.add(reaction((_) => receiveAddress, (_) { |
| 176 | if (!(tradeState is TradeIsCreatedSuccessfully)) { |
| 177 | receiveAddressDisplayName = null; |
| 178 | } |
| 179 | })); |
| 180 | |
| 181 | provider = providerList.firstOrNull; |
| 182 | final initialProvider = provider; |
| 183 | provider!.checkIsAvailable().then((bool isAvailable) { |
| 184 | if (!isAvailable && provider == initialProvider) { |
| 185 | provider = providerList.firstWhere((provider) => provider is ChangeNowExchangeProvider, |
| 186 | orElse: () => providerList.last); |
| 187 | _onPairChange(); |
| 188 | } |
| 189 | }); |
| 190 | |
| 191 | // providerDisplay is read by ui to display auto-selected provider. |
| 192 | // it's on a delay so it doesn't flicker. |
| 193 | _disposers.add(reaction((_) => bestRateProvider, (val) { |
| 194 | providerDisplay = val; |
| 195 | }, delay: 300)); |
| 196 | |
| 197 | receiveCurrencies = CryptoCurrency.all |
| 198 | .where((cryptoCurrency) => !excludeReceiveCurrencies.contains(cryptoCurrency)) |
| 199 | .toList() |
| 200 | .asObservable(); |
| 201 | depositCurrencies = CryptoCurrency.all |
| 202 | .where((cryptoCurrency) => !excludeDepositCurrencies.contains(cryptoCurrency)) |
| 203 | .toList() |
| 204 | .asObservable(); |
| 205 | |
| 206 | _injectUserEthTokensIntoCurrencyLists(); |
| 207 | _injectUserSplTokensIntoCurrencyLists(); |
| 208 | _injectUserTronTokensIntoCurrencyLists(); |
| 209 | _defineIsReceiveAmountEditable(); |
| 210 | loadLimits(); |
| 211 | _disposers.add(reaction((_) => isFixedRateMode, (Object _) { |
| 212 | bestRateProvider = null; |
| 213 | bestRate = 0.0; |
| 214 | loadLimits(); |
| 215 | })); |
| 216 | |
| 217 | _disposers.add(reaction((_) => forceDecentralizedExchanges, (val) { |
| 218 | if (val && (bestRateProvider?.description.isCentralized ?? false)) { |
| 219 | bestRateProvider = null; |
| 220 | bestRate = 0.0; |
| 221 | loadLimits(); |
| 222 | } |
| 223 | })); |
| 224 | |
| 225 | if (isElectrumWallet) { |
| 226 | bitcoin!.updateFeeRates(wallet); |
| 227 | } |
| 228 | fetchFiatPrice(receiveCurrency); |
| 229 | |
| 230 | updateDepositAvailableAmount(); |
| 231 | } |
| 232 | |
| 233 | Future<void> updateDepositAvailableAmount() async { |
| 234 | if (depositCurrency == CryptoCurrency.btcln) { |
| 235 | final currency = depositCurrency; |
| 236 | Future.doWhile(() async { |
| 237 | await Future.delayed(const Duration(milliseconds: 400)); |
| 238 | if (depositCurrency != currency) { |
| 239 | return false; |
| 240 | } |
| 241 | final balance = wallet.balance[depositCurrency]; |
| 242 | if (balance != null) { |
| 243 | depositAvailableAmount = _appStore.amountParsingProxy.asDisplayString(balance.available); |
| 244 | return false; |
| 245 | } |
| 246 | return true; |
| 247 | }).timeout(Duration(seconds: 20)); |
| 248 | } else if (isEVMCompatibleChain(wallet.type)) { |
| 249 | final currency = depositCurrency; |
| 250 | final balanceCurrency = wallet.balance.keys.firstWhereOrNull( |
| 251 | (c) => |
| 252 | c.title == depositCurrency.title && |
| 253 | (c.tag == depositCurrency.tag || c.tag == depositCurrency.title), |
| 254 | ); |
| 255 | final balanceForCurrency = balanceCurrency != null ? wallet.balance[balanceCurrency] : null; |
| 256 | if (depositCurrency == currency && balanceForCurrency != null) { |
| 257 | depositAvailableAmount = |
| 258 | _appStore.amountParsingProxy.asDisplayStringWithSymbol(balanceForCurrency.available); |
| 259 | } |
| 260 | } else { |
| 261 | final currency = depositCurrency; |
| 262 | final sendingBalance = Money.fromInt( |
| 263 | await unspentCoinsListViewModel.getSendingBalance(UnspentCoinType.any), currency); |
| 264 | final amount = _appStore.amountParsingProxy.asDisplayStringWithSymbol(sendingBalance); |
| 265 | if (depositCurrency == currency) { |
| 266 | depositAvailableAmount = amount; |
| 267 | } |
| 268 | } |
| 269 | } |
| 270 | |
| 271 | void showFiatCurrencyPicker(BuildContext context) { |
| 272 | FiatCurrencyPickerSheet.show( |
| 273 | context: context, |
| 274 | selected: fiat, |
| 275 | onSelected: (cur) => _settingsStore.fiatCurrency = cur, |
| 276 | ); |
| 277 | } |
| 278 | |
| 279 | bool useSameWalletAddress(CryptoCurrency currency) => |
| 280 | currency == wallet.currency || |
| 281 | (currency == CryptoCurrency.btcln && |
| 282 | wallet.currency == CryptoCurrency.btc && |
| 283 | wallet.isSoftwareWallet) || |
| 284 | (currency.tag != null && currency.tag == wallet.currency.tag) || |
| 285 | currency.tag == wallet.currency.title; |
| 286 | |
| 287 | bool get isElectrumWallet => [ |
| 288 | WalletType.bitcoin, |
| 289 | WalletType.litecoin, |
| 290 | WalletType.bitcoinCash, |
| 291 | WalletType.dogecoin |
| 292 | ].contains(wallet.type); |
| 293 | |
| 294 | bool get hideAddressAfterExchange => |
| 295 | [WalletType.monero, WalletType.wownero, WalletType.zcash].contains(wallet.type) || |
| 296 | isElectrumWallet; |
| 297 | |
| 298 | bool _useTorOnly; |
| 299 | final ExchangeTemplateStore _exchangeTemplateStore; |
| 300 | final TradesStore tradesStore; |
| 301 | final SharedPreferences sharedPreferences; |
| 302 | |
| 303 | List<ExchangeProvider> get _allProviders => [ |
| 304 | ChangeNowExchangeProvider(settingsStore: _settingsStore), |
| 305 | // SideShiftExchangeProvider(), |
| 306 | ChainflipExchangeProvider(), |
| 307 | if (FeatureFlag.isExolixEnabled) ExolixExchangeProvider(), |
| 308 | SwapTradeExchangeProvider(), |
| 309 | LetsExchangeExchangeProvider(), |
| 310 | StealthExExchangeProvider(), |
| 311 | XOSwapExchangeProvider(), |
| 312 | SwapsXyzExchangeProvider(), |
| 313 | JupiterExchangeProvider(), |
| 314 | NearIntentsExchangeProvider(), |
| 315 | TrocadorExchangeProvider( |
| 316 | useTorOnly: _useTorOnly, providerStates: _settingsStore.trocadorProviderStates), |
| 317 | ]; |
| 318 | |
| 319 | @observable |
| 320 | ExchangeProvider? provider; |
| 321 | |
| 322 | @observable |
| 323 | ExchangeProvider? providerDisplay; |
| 324 | |
| 325 | /// Maps in dart are not sorted by default |
| 326 | /// SplayTreeMap is a map sorted by keys |
| 327 | /// will use it to sort available providers |
| 328 | /// based on the rate they yield for the current trade |
| 329 | /// |
| 330 | /// |
| 331 | /// initialize with descending comparator |
| 332 | /// since we want largest rate first |
| 333 | final SplayTreeMap<double, ExchangeProvider> _sortedAvailableProviders = |
| 334 | SplayTreeMap<double, ExchangeProvider>((double a, double b) => b.compareTo(a)); |
| 335 | |
| 336 | final List<ExchangeProvider> _tradeAvailableProviders = []; |
| 337 | |
| 338 | Map<ExchangeProvider, Limits?> _providerLimits = {}; |
| 339 | |
| 340 | @observable |
| 341 | ObservableList<ExchangeProvider> selectedProviders; |
| 342 | |
| 343 | @observable |
| 344 | List<ExchangeProvider> providerList; |
| 345 | |
| 346 | @observable |
| 347 | CryptoCurrency depositCurrency; |
| 348 | |
| 349 | @observable |
| 350 | CryptoCurrency receiveCurrency; |
| 351 | |
| 352 | @observable |
| 353 | LimitsState limitsState; |
| 354 | |
| 355 | @observable |
| 356 | ExchangeTradeState tradeState; |
| 357 | |
| 358 | @observable |
| 359 | Money? _depositAmount; |
| 360 | |
| 361 | @computed |
| 362 | bool get hasDepositAmount => _depositAmount != null; |
| 363 | |
| 364 | @computed |
| 365 | String get depositAmount => |
| 366 | _depositAmount == null ? "" : amountParsingProxy.asDisplayString(_depositAmount!); |
| 367 | |
| 368 | @computed |
| 369 | String get depositAmountCanonical => _depositAmount == null ? "0.0" : _depositAmount.toString(); |
| 370 | |
| 371 | @observable |
| 372 | Money? _receiveAmount; |
| 373 | |
| 374 | @computed |
| 375 | String get receiveAmount => |
| 376 | _receiveAmount == null ? "" : amountParsingProxy.asDisplayString(_receiveAmount!); |
| 377 | |
| 378 | @action |
| 379 | // only set canonical formated amounts here; |
| 380 | void setCanonicalReceiveAmount(String value) => |
| 381 | _receiveAmount = Money.tryParse(value, receiveCurrency); |
| 382 | |
| 383 | @observable |
| 384 | String depositAddress; |
| 385 | |
| 386 | @observable |
| 387 | String receiveAddress; |
| 388 | |
| 389 | @observable |
| 390 | String receiveAddressExtraId = ''; |
| 391 | |
| 392 | @observable |
| 393 | String? receiveAddressDisplayName; |
| 394 | |
| 395 | @observable |
| 396 | bool isDepositAddressEnabled; |
| 397 | |
| 398 | @observable |
| 399 | bool isReceiveAmountEntered; |
| 400 | |
| 401 | @observable |
| 402 | bool isReceiveAmountEditable; |
| 403 | |
| 404 | @observable |
| 405 | bool isFixedRateMode; |
| 406 | |
| 407 | @observable |
| 408 | bool isSendAllEnabled; |
| 409 | |
| 410 | @observable |
| 411 | Limits limits; |
| 412 | |
| 413 | @observable |
| 414 | bool tradeStarted = false; |
| 415 | |
| 416 | @observable |
| 417 | bool noProviderForPair = false; |
| 418 | |
| 419 | @observable |
| 420 | bool isSendFromExternal = false; |
| 421 | |
| 422 | @computed |
| 423 | SyncStatus get status => wallet.syncStatus; |
| 424 | |
| 425 | @computed |
| 426 | ObservableList<ExchangeTemplate> get templates => _exchangeTemplateStore.templates; |
| 427 | |
| 428 | @computed |
| 429 | List<WalletContact> get walletContactsToShow => contactListViewModel.walletContacts |
| 430 | .where((element) => element.type == receiveCurrency) |
| 431 | .toList(); |
| 432 | |
| 433 | @computed |
| 434 | List<WalletContact> get refundWalletContactsToShow => contactListViewModel.walletContacts |
| 435 | .where((element) => element.type == depositCurrency) |
| 436 | .toList(); |
| 437 | |
| 438 | @computed |
| 439 | Future<List<WalletInfo>> get receiveWallets async { |
| 440 | try { |
| 441 | WalletType? type; |
| 442 | type = cryptoCurrencyOrTokenToWalletType(receiveCurrency); |
| 443 | if (type == null) { |
| 444 | type = |
| 445 | cryptoCurrencyOrTokenToWalletType(CryptoCurrency.fromString(receiveCurrency.tag ?? "")); |
| 446 | } |
| 447 | |
| 448 | return await WalletInfo.selectList("type = ?", [type!.index]); |
| 449 | } catch (e) { |
| 450 | return []; |
| 451 | } |
| 452 | } |
| 453 | |
| 454 | Future<List<WalletInfoAddressInfo>> addressesForAccountsWallet(WalletInfo wallet) async { |
| 455 | final List<WalletInfoAddressInfo> ret = []; |
| 456 | final addresses = await wallet.getAddressInfos(); |
| 457 | for (var list in addresses.values) { |
| 458 | // we only want the "primary" account addresses - those that contain account names. |
| 459 | ret.addAll(list.where((item) => item.label.split(" ").length > 1)); |
| 460 | } |
| 461 | return ret; |
| 462 | } |
| 463 | |
| 464 | @computed |
| 465 | Future<List<WalletInfo>> get depositWallets async { |
| 466 | WalletType? type; |
| 467 | type = cryptoCurrencyOrTokenToWalletType(depositCurrency); |
| 468 | if (type == null) { |
| 469 | try { |
| 470 | type = |
| 471 | cryptoCurrencyOrTokenToWalletType(CryptoCurrency.fromString(depositCurrency.tag ?? "")); |
| 472 | } catch (_) {} |
| 473 | } |
| 474 | |
| 475 | if (type != null) { |
| 476 | return await WalletInfo.selectList("type = ?", [type.index]); |
| 477 | } |
| 478 | |
| 479 | return await WalletInfo.getAll(); |
| 480 | } |
| 481 | |
| 482 | @action |
| 483 | bool checkIfWalletIsAnInternalWallet(String address) { |
| 484 | final walletContactList = |
| 485 | walletContactsToShow.where((element) => element.address == address).toList(); |
| 486 | |
| 487 | return walletContactList.isNotEmpty; |
| 488 | } |
| 489 | |
| 490 | @computed |
| 491 | bool get shouldDisplayTOTP2FAForExchangesToInternalWallet => |
| 492 | _settingsStore.shouldRequireTOTP2FAForExchangesToInternalWallets; |
| 493 | |
| 494 | @computed |
| 495 | bool get shouldDisplayTOTP2FAForExchangesToExternalWallet => |
| 496 | _settingsStore.shouldRequireTOTP2FAForExchangesToExternalWallets; |
| 497 | |
| 498 | @computed |
| 499 | String? get balanceDisplay { |
| 500 | CryptoCurrency? balanceCurrency; |
| 501 | if (isEVMCompatibleChain(wallet.type) || |
| 502 | wallet.type == WalletType.solana || |
| 503 | wallet.type == WalletType.tron) { |
| 504 | balanceCurrency = wallet.balance.keys.firstWhereOrNull( |
| 505 | (c) => |
| 506 | c.title == depositCurrency.title && |
| 507 | (c.tag == depositCurrency.tag || c.tag == depositCurrency.title), |
| 508 | ); |
| 509 | } else { |
| 510 | balanceCurrency = depositCurrency; |
| 511 | } |
| 512 | final bal = balanceCurrency != null ? wallet.balance[balanceCurrency]?.available : null; |
| 513 | if (bal == null) return null; |
| 514 | return amountParsingProxy.asDisplayString(bal); |
| 515 | } |
| 516 | |
| 517 | //* Still open to further optimize these checks |
| 518 | //* It works but can be made better |
| 519 | @action |
| 520 | bool shouldDisplayTOTP() { |
| 521 | final isInternalWallet = checkIfWalletIsAnInternalWallet(receiveAddress); |
| 522 | |
| 523 | if (isInternalWallet) { |
| 524 | return shouldDisplayTOTP2FAForExchangesToInternalWallet; |
| 525 | } else { |
| 526 | return shouldDisplayTOTP2FAForExchangesToExternalWallet; |
| 527 | } |
| 528 | } |
| 529 | |
| 530 | @computed |
| 531 | bool get decentralizedExchangesPromptDismissed => |
| 532 | _settingsStore.decentralizedExchangesPromptDismissed; |
| 533 | |
| 534 | @action |
| 535 | void dismissDecentralizedExchangesPrompt() { |
| 536 | _settingsStore.decentralizedExchangesPromptDismissed = true; |
| 537 | } |
| 538 | |
| 539 | @computed |
| 540 | TransactionPriority get transactionPriority { |
| 541 | final priority = _settingsStore.getPriority(wallet.type, chainId: wallet.chainId); |
| 542 | |
| 543 | if (priority == null) { |
| 544 | throw Exception('Unexpected type ${wallet.type.toString()}'); |
| 545 | } |
| 546 | |
| 547 | return priority; |
| 548 | } |
| 549 | |
| 550 | bool get hasAllAmount { |
| 551 | if ([ |
| 552 | WalletType.monero, |
| 553 | WalletType.bitcoin, |
| 554 | WalletType.litecoin, |
| 555 | WalletType.bitcoinCash, |
| 556 | WalletType.dogecoin, |
| 557 | ].contains(wallet.type)) return (depositCurrency == wallet.currency); |
| 558 | |
| 559 | if (!isEVMCompatibleChain(wallet.type)) return false; |
| 560 | |
| 561 | if (depositCurrency == wallet.currency) return true; |
| 562 | |
| 563 | return wallet.balance.keys.any((c) => |
| 564 | c.title == depositCurrency.title && |
| 565 | (c.tag == depositCurrency.tag || c.tag == depositCurrency.title)); |
| 566 | } |
| 567 | |
| 568 | bool get isMoneroWallet => wallet.type == WalletType.monero; |
| 569 | |
| 570 | @observable |
| 571 | ObservableList<CryptoCurrency> receiveCurrencies; |
| 572 | |
| 573 | @observable |
| 574 | ObservableList<CryptoCurrency> depositCurrencies; |
| 575 | |
| 576 | final AppStore _appStore; |
| 577 | SettingsStore get _settingsStore => _appStore.settingsStore; |
| 578 | |
| 579 | final ContactListViewModel contactListViewModel; |
| 580 | |
| 581 | final UnspentCoinsListViewModel unspentCoinsListViewModel; |
| 582 | |
| 583 | final FeesViewModel feesViewModel; |
| 584 | |
| 585 | @observable |
| 586 | double bestRate = 0.0; |
| 587 | |
| 588 | @computed |
| 589 | bool get useDepositBaseUnit => _appStore.amountParsingProxy.useSatoshi(depositCurrency); |
| 590 | |
| 591 | @computed |
| 592 | bool get useReceiveBaseUnit => _appStore.amountParsingProxy.useSatoshi(receiveCurrency); |
| 593 | |
| 594 | @computed |
| 595 | AmountParsingProxy get amountParsingProxy => _appStore.amountParsingProxy; |
| 596 | |
| 597 | @observable |
| 598 | ExchangeProvider? bestRateProvider; |
| 599 | |
| 600 | @observable |
| 601 | ExchangeProvider? forcedProvider; |
| 602 | |
| 603 | @action |
| 604 | void setForcedProvider(ExchangeProvider? provider) { |
| 605 | forcedProvider = provider; |
| 606 | forcedProviderRate = 0.0; |
| 607 | calculateForcedProviderRate(); |
| 608 | } |
| 609 | |
| 610 | WalletInfo? selectedAddressBookWallet; |
| 611 | |
| 612 | @observable |
| 613 | double forcedProviderRate = 0.0; |
| 614 | |
| 615 | late Timer bestRateSync; |
| 616 | |
| 617 | final FiatConversionStore fiatConversionStore; |
| 618 | |
| 619 | FiatCurrency get fiat => _settingsStore.fiatCurrency; |
| 620 | |
| 621 | @computed |
| 622 | bool get isFiatDisabled => feesViewModel.isFiatDisabled; |
| 623 | |
| 624 | @action |
| 625 | Future<void> fetchFiatPrice(CryptoCurrency currency) async { |
| 626 | if (fiatConversionStore.prices[currency] != null) { |
| 627 | return; |
| 628 | } |
| 629 | |
| 630 | fiatConversionStore.prices[currency] = await FiatConversionService.fetchPrice( |
| 631 | crypto: currency, |
| 632 | fiat: fiat, |
| 633 | torOnly: _settingsStore.fiatApiMode == FiatApiMode.torOnly, |
| 634 | ); |
| 635 | } |
| 636 | |
| 637 | @computed |
| 638 | String get receiveAmountFiatFormatted { |
| 639 | var amount = '0.00'; |
| 640 | try { |
| 641 | if (_receiveAmount != null) { |
| 642 | if (fiatConversionStore.prices[receiveCurrency] == null) return ''; |
| 643 | |
| 644 | amount = calculateFiatAmount( |
| 645 | price: fiatConversionStore.prices[receiveCurrency]!, |
| 646 | cryptoAmount: _receiveAmount.toString(), |
| 647 | ); |
| 648 | } |
| 649 | } catch (_) { |
| 650 | log('Error calculating receive amount fiat formatted: $_'); |
| 651 | } |
| 652 | return isFiatDisabled ? '' : '$amount'; |
| 653 | } |
| 654 | |
| 655 | @computed |
| 656 | String get depositAmountFiatFormatted { |
| 657 | var amount = '0.00'; |
| 658 | try { |
| 659 | if (_depositAmount != null) { |
| 660 | if (fiatConversionStore.prices[depositCurrency] == null) return ''; |
| 661 | |
| 662 | amount = calculateFiatAmount( |
| 663 | price: fiatConversionStore.prices[depositCurrency]!, |
| 664 | cryptoAmount: _depositAmount.toString(), |
| 665 | ); |
| 666 | } |
| 667 | } catch (_) { |
| 668 | log('Error calculating deposit amount fiat formatted: $_'); |
| 669 | } |
| 670 | return isFiatDisabled ? '' : '$amount'; |
| 671 | } |
| 672 | |
| 673 | @computed |
| 674 | String get receiveAmountFiat { |
| 675 | var amount = ''; |
| 676 | try { |
| 677 | if (_receiveAmount != null) { |
| 678 | if (fiatConversionStore.prices[receiveCurrency] == null) return ''; |
| 679 | |
| 680 | amount = calculateFiatAmount( |
| 681 | price: fiatConversionStore.prices[receiveCurrency]!, |
| 682 | cryptoAmount: _receiveAmount.toString(), |
| 683 | raw: true); |
| 684 | } |
| 685 | } catch (_) { |
| 686 | log('Error calculating receive amount fiat formatted: $_'); |
| 687 | } |
| 688 | return amount; |
| 689 | } |
| 690 | |
| 691 | @computed |
| 692 | String get depositAmountFiat { |
| 693 | var amount = ''; |
| 694 | try { |
| 695 | if (_depositAmount != null) { |
| 696 | if (fiatConversionStore.prices[depositCurrency] == null) return ''; |
| 697 | |
| 698 | amount = calculateFiatAmount( |
| 699 | price: fiatConversionStore.prices[depositCurrency]!, |
| 700 | cryptoAmount: _depositAmount.toString(), |
| 701 | raw: true, |
| 702 | ); |
| 703 | } |
| 704 | } catch (_) { |
| 705 | log('Error calculating deposit amount fiat formatted: $_'); |
| 706 | } |
| 707 | return amount; |
| 708 | } |
| 709 | |
| 710 | String roundedDepositAmount(int digits) { |
| 711 | if (depositAmount.split(".").last.length <= digits) { |
| 712 | return depositAmount; |
| 713 | } |
| 714 | try { |
| 715 | return double.parse(depositAmount).toStringAsPrecision(digits); |
| 716 | } catch (e) { |
| 717 | return "0"; |
| 718 | } |
| 719 | } |
| 720 | |
| 721 | String roundedReceiveAmount(int digits) { |
| 722 | if (receiveAmount.split(".").last.length <= digits) { |
| 723 | return receiveAmount; |
| 724 | } |
| 725 | try { |
| 726 | return double.parse(receiveAmount).toStringAsPrecision(digits); |
| 727 | } catch (e) { |
| 728 | return "0"; |
| 729 | } |
| 730 | } |
| 731 | |
| 732 | String roundedReceiveAmountFiat(int digits) { |
| 733 | if (receiveAmountFiat.split(".").last.length <= digits) { |
| 734 | return receiveAmountFiat; |
| 735 | } |
| 736 | |
| 737 | return double.tryParse(receiveAmountFiat)?.toStringAsPrecision(digits) ?? '0.00'; |
| 738 | } |
| 739 | |
| 740 | String roundedDepositAmountFiat(int digits) { |
| 741 | if (depositAmountFiat.split(".").last.length <= digits) { |
| 742 | return depositAmountFiat; |
| 743 | } |
| 744 | |
| 745 | return double.tryParse(depositAmountFiat)?.toStringAsPrecision(digits) ?? '0.00'; |
| 746 | } |
| 747 | |
| 748 | @action |
| 749 | void changeDepositCurrency({required CryptoCurrency currency}) { |
| 750 | final previousCurrency = depositCurrency; |
| 751 | final wasSendAllEnabled = isSendAllEnabled; |
| 752 | |
| 753 | depositCurrency = currency; |
| 754 | isFixedRateMode = false; |
| 755 | isDepositAddressEnabled = !useSameWalletAddress(depositCurrency); |
| 756 | |
| 757 | if (previousCurrency != currency) { |
| 758 | _onPairChange(clearBoth: wasSendAllEnabled); |
| 759 | } |
| 760 | fetchFiatPrice(currency); |
| 761 | updateDepositAvailableAmount(); |
| 762 | } |
| 763 | |
| 764 | @action |
| 765 | void changeReceiveCurrency({required CryptoCurrency currency}) { |
| 766 | final previousCurrency = receiveCurrency; |
| 767 | |
| 768 | if (!(currency.tag == receiveCurrency.tag || |
| 769 | currency.tag == receiveCurrency.title || |
| 770 | currency.title == receiveCurrency.tag || |
| 771 | currency == receiveCurrency)) { |
| 772 | receiveAddress = ""; |
| 773 | } |
| 774 | if (currency != receiveCurrency) { |
| 775 | receiveAddressExtraId = ""; |
| 776 | } |
| 777 | |
| 778 | receiveCurrency = currency; |
| 779 | isFixedRateMode = false; |
| 780 | isDepositAddressEnabled = !useSameWalletAddress(depositCurrency); |
| 781 | |
| 782 | if (previousCurrency != currency) { |
| 783 | _onPairChange(); |
| 784 | } |
| 785 | fetchFiatPrice(currency); |
| 786 | } |
| 787 | |
| 788 | @action |
| 789 | Future<void> changeReceiveAmount({required String amount, bool isCanonical = false}) async { |
| 790 | if (amount.isEmpty) { |
| 791 | _depositAmount = null; |
| 792 | _receiveAmount = null; |
| 793 | return; |
| 794 | } |
| 795 | |
| 796 | _receiveAmount = isCanonical |
| 797 | ? Money.tryParse(amount.sanitized(), receiveCurrency) |
| 798 | : _appStore.amountParsingProxy.tryParseCryptoString(amount.sanitized(), receiveCurrency); |
| 799 | |
| 800 | if (_receiveAmount == null) { |
| 801 | _depositAmount = null; |
| 802 | return; |
| 803 | } |
| 804 | |
| 805 | final _enteredAmount = double.tryParse(_receiveAmount.toString()) ?? 0; |
| 806 | |
| 807 | if (bestRate == 0) { |
| 808 | _depositAmount = null; |
| 809 | |
| 810 | await calculateBestRate(); |
| 811 | } |
| 812 | |
| 813 | final amount_ = _enteredAmount / (forcedProvider == null ? bestRate : forcedProviderRate); |
| 814 | _depositAmount = amount_.tryToMoney(depositCurrency); |
| 815 | } |
| 816 | |
| 817 | @action |
| 818 | void setReceiveAmountFromFiat({required String fiatAmount}) { |
| 819 | final _enteredAmount = double.tryParse(fiatAmount.sanitized()) ?? 0.0; |
| 820 | final price = fiatConversionStore.prices[receiveCurrency]; |
| 821 | if (price == null || price == 0.0) return; |
| 822 | |
| 823 | final crypto = _enteredAmount / price; |
| 824 | final _receiveAmountTmp = crypto.toString().withMaxDecimals(receiveCurrency.decimals); |
| 825 | if (_receiveAmount != _receiveAmountTmp) { |
| 826 | changeReceiveAmount(amount: _receiveAmountTmp); |
| 827 | } |
| 828 | } |
| 829 | |
| 830 | @action |
| 831 | void setDepositAmountFromFiat({required String fiatAmount}) { |
| 832 | final _enteredAmount = double.tryParse(fiatAmount.sanitized()) ?? 0.0; |
| 833 | final price = fiatConversionStore.prices[depositCurrency]; |
| 834 | if (price == null || price == 0.0) return; |
| 835 | |
| 836 | final crypto = _enteredAmount / price; |
| 837 | final depositAmountTmp = crypto.toString().withMaxDecimals(depositCurrency.decimals); |
| 838 | if (_depositAmount != depositAmountTmp) { |
| 839 | changeDepositAmount(amount: depositAmountTmp, isCanonical: true); |
| 840 | } |
| 841 | } |
| 842 | |
| 843 | @action |
| 844 | Future<void> changeDepositAmount({required String amount, bool isCanonical = false}) async { |
| 845 | if (amount.isEmpty) { |
| 846 | _depositAmount = null; |
| 847 | _receiveAmount = null; |
| 848 | return; |
| 849 | } |
| 850 | |
| 851 | _depositAmount = isCanonical |
| 852 | ? Money.tryParse(amount.sanitized(), depositCurrency) |
| 853 | : _appStore.amountParsingProxy.tryParseCryptoString(amount.sanitized(), depositCurrency); |
| 854 | |
| 855 | if (_depositAmount == null) { |
| 856 | _receiveAmount = null; |
| 857 | return; |
| 858 | } |
| 859 | |
| 860 | /// For fixed-rate transactions, we don't want to recalculate receive amount |
| 861 | /// as it should remain exactly what the user set |
| 862 | if (isFixedRateMode) return; |
| 863 | |
| 864 | final _enteredAmount = double.tryParse(_depositAmount.toString()) ?? 0; |
| 865 | |
| 866 | /// in case the best rate was not calculated yet |
| 867 | if (bestRate == 0) { |
| 868 | _receiveAmount = null; |
| 869 | |
| 870 | await calculateBestRate(); |
| 871 | } |
| 872 | |
| 873 | final amount_ = _enteredAmount * (forcedProvider == null ? bestRate : forcedProviderRate); |
| 874 | _receiveAmount = amount_.tryToMoney(receiveCurrency); |
| 875 | } |
| 876 | |
| 877 | bool checkIfInputMeetsMinOrMaxCondition(String input) { |
| 878 | final _enteredAmount = double.tryParse(input.sanitized()) ?? 0; |
| 879 | double minLimit = limits.min ?? 0; |
| 880 | double? maxLimit = limits.max; |
| 881 | |
| 882 | if (_enteredAmount < minLimit) return false; |
| 883 | |
| 884 | if (maxLimit != null && _enteredAmount > maxLimit) return false; |
| 885 | |
| 886 | return true; |
| 887 | } |
| 888 | |
| 889 | Future<void> calculateForcedProviderRate() async { |
| 890 | if (forcedProvider == null || depositCurrency == receiveCurrency) { |
| 891 | forcedProviderRate = 0.0; |
| 892 | return; |
| 893 | } |
| 894 | |
| 895 | final amount = |
| 896 | double.tryParse(isFixedRateMode ? _receiveAmount.toString() : _depositAmount.toString()) ?? |
| 897 | initialAmountByAssets(isFixedRateMode ? receiveCurrency : depositCurrency); |
| 898 | |
| 899 | forcedProviderRate = await forcedProvider!.fetchRate( |
| 900 | from: depositCurrency, |
| 901 | to: receiveCurrency, |
| 902 | amount: amount, |
| 903 | isFixedRateMode: isFixedRateMode, |
| 904 | isReceiveAmount: isFixedRateMode); |
| 905 | } |
| 906 | |
| 907 | bool _excludeProviderForSwapAll(ExchangeProvider provider) => |
| 908 | isSendAllEnabled && |
| 909 | (provider.description == ExchangeProviderDescription.swapsXyz || |
| 910 | provider.description == ExchangeProviderDescription.nearIntents); |
| 911 | |
| 912 | bool _excludeProviderForReceiveExtraId(ExchangeProvider provider) => |
| 913 | memoLabelTypeFor(receiveCurrency) != null && !provider.supportsMemoOrDestinationTag; |
| 914 | |
| 915 | Future<void> calculateBestRate() async { |
| 916 | if (depositCurrency == receiveCurrency) { |
| 917 | bestRate = 0.0; |
| 918 | bestRateProvider = null; |
| 919 | return; |
| 920 | } |
| 921 | final amount = |
| 922 | double.tryParse(isFixedRateMode ? _receiveAmount.toString() : _depositAmount.toString()) ?? |
| 923 | initialAmountByAssets(isFixedRateMode ? receiveCurrency : depositCurrency); |
| 924 | |
| 925 | final validProvidersForAmount = _tradeAvailableProviders.where((provider) { |
| 926 | if (_excludeProviderForSwapAll(provider)) return false; |
| 927 | if (_excludeProviderForReceiveExtraId(provider)) return false; |
| 928 | |
| 929 | final limits = _providerLimits[provider]; |
| 930 | |
| 931 | if (limits == null) return false; |
| 932 | if (limits.min != null && amount < limits.min!) return false; |
| 933 | if (limits.max != null && amount > limits.max!) return false; |
| 934 | |
| 935 | return true; |
| 936 | }).toList(); |
| 937 | |
| 938 | final _providers = validProvidersForAmount |
| 939 | .where((element) => !isFixedRateMode || element.supportsFixedRate) |
| 940 | .toList(); |
| 941 | |
| 942 | final result = await Future.wait<double>( |
| 943 | _providers.map( |
| 944 | (element) => element |
| 945 | .fetchRate( |
| 946 | from: depositCurrency, |
| 947 | to: receiveCurrency, |
| 948 | amount: amount, |
| 949 | isFixedRateMode: isFixedRateMode, |
| 950 | isReceiveAmount: isFixedRateMode) |
| 951 | .timeout( |
| 952 | Duration(seconds: 7), |
| 953 | onTimeout: () => 0.0, |
| 954 | ), |
| 955 | ), |
| 956 | ); |
| 957 | |
| 958 | // We'll use a new SplayTreeMap to avoid concurrent modification issues |
| 959 | final newSortedProviders = |
| 960 | SplayTreeMap<double, ExchangeProvider>((double a, double b) => b.compareTo(a)); |
| 961 | |
| 962 | for (int i = 0; i < result.length; i++) { |
| 963 | if (result[i] != 0) { |
| 964 | /// add this provider as its valid for this trade |
| 965 | try { |
| 966 | newSortedProviders[result[i]] = _providers[i]; |
| 967 | } catch (e) { |
| 968 | // will throw "Concurrent modification during iteration" error if modified at the same |
| 969 | // time [createTrade] is called, as this is not a normal map, but a sorted map |
| 970 | } |
| 971 | } else { |
| 972 | printV('calculateBestRate: ${_providers[i].title} returned rate=0'); |
| 973 | } |
| 974 | } |
| 975 | |
| 976 | // Replace the old map with the new one |
| 977 | _sortedAvailableProviders.clear(); |
| 978 | _sortedAvailableProviders.addAll(newSortedProviders); |
| 979 | |
| 980 | if (_sortedAvailableProviders.isNotEmpty) { |
| 981 | bestRate = _sortedAvailableProviders.keys.first; |
| 982 | bestRateProvider = _sortedAvailableProviders.values.first; |
| 983 | } |
| 984 | noProviderForPair = _sortedAvailableProviders.isEmpty; |
| 985 | } |
| 986 | |
| 987 | @action |
| 988 | Future<void> loadLimits() async { |
| 989 | if (depositCurrency == receiveCurrency) { |
| 990 | limitsState = LimitsLoadedSuccessfully(limits: Limits(min: 0, max: 0)); |
| 991 | return; |
| 992 | } |
| 993 | if (selectedProviders.isEmpty) return; |
| 994 | |
| 995 | limitsState = LimitsIsLoading(); |
| 996 | |
| 997 | final from = isFixedRateMode ? receiveCurrency : depositCurrency; |
| 998 | final to = isFixedRateMode ? depositCurrency : receiveCurrency; |
| 999 | |
| 1000 | double? lowestMin = double.maxFinite; |
| 1001 | double? highestMax = 0.0; |
| 1002 | |
| 1003 | try { |
| 1004 | final futures = selectedProviders |
| 1005 | .where((provider) => providerList.contains(provider)) |
| 1006 | .where((provider) => !_excludeProviderForReceiveExtraId(provider)) |
| 1007 | .map((provider) async { |
| 1008 | final limits = await provider |
| 1009 | .fetchLimits( |
| 1010 | from: from, |
| 1011 | to: to, |
| 1012 | isFixedRateMode: isFixedRateMode, |
| 1013 | ) |
| 1014 | .onError((error, stackTrace) => null) |
| 1015 | .timeout( |
| 1016 | Duration(seconds: 7), |
| 1017 | onTimeout: () => null, |
| 1018 | ); |
| 1019 | return MapEntry(provider, limits); |
| 1020 | }).toList(); |
| 1021 | |
| 1022 | final entries = await Future.wait(futures); |
| 1023 | _providerLimits = Map.fromEntries(entries); |
| 1024 | |
| 1025 | _providerLimits.values.whereType<Limits>().forEach((tempLimits) { |
| 1026 | if (lowestMin != null && (tempLimits.min ?? -1) < lowestMin!) { |
| 1027 | lowestMin = tempLimits.min; |
| 1028 | } |
| 1029 | |
| 1030 | if (highestMax != null && (tempLimits.max ?? double.maxFinite) > highestMax!) { |
| 1031 | highestMax = tempLimits.max; |
| 1032 | } |
| 1033 | }); |
| 1034 | } on ConcurrentModificationError { |
| 1035 | /// if user changed the selected providers while fetching limits |
| 1036 | /// then delay the fetching limits a bit and try again |
| 1037 | /// |
| 1038 | /// this is because the limitation of collections that |
| 1039 | /// you can't modify it while iterating through it |
| 1040 | Future.delayed(Duration(milliseconds: 200), loadLimits); |
| 1041 | } |
| 1042 | |
| 1043 | if (lowestMin != double.maxFinite) { |
| 1044 | limits = Limits(min: lowestMin, max: highestMax); |
| 1045 | limitsState = LimitsLoadedSuccessfully(limits: limits); |
| 1046 | } else { |
| 1047 | limitsState = LimitsLoadedFailure(error: 'Limits loading failed'); |
| 1048 | } |
| 1049 | |
| 1050 | calculateBestRate(); |
| 1051 | } |
| 1052 | |
| 1053 | @action |
| 1054 | Future<void> createTrade() async { |
| 1055 | final depositAmountValue = _depositAmount ?? Money.zero(depositCurrency); |
| 1056 | final receiveAmountValue = _receiveAmount ?? Money.zero(receiveCurrency); |
| 1057 | |
| 1058 | if (depositAmountValue.isZero || |
| 1059 | depositAmountValue.isNegative || |
| 1060 | receiveAmountValue.isZero || |
| 1061 | receiveAmountValue.isNegative) { |
| 1062 | ExchangeProviderLogger.logError( |
| 1063 | provider: forcedProvider?.description ?? bestRateProvider?.description, |
| 1064 | function: 'createTrade', |
| 1065 | error: 'Invalid swap amount: deposit=$_depositAmount receive=$_receiveAmount', |
| 1066 | requestData: { |
| 1067 | 'from': depositCurrency.title, |
| 1068 | 'to': receiveCurrency.title, |
| 1069 | 'fromAmount': _depositAmount, |
| 1070 | 'toAmount': _receiveAmount, |
| 1071 | 'isFixedRateMode': isFixedRateMode, |
| 1072 | 'forcedProvider': forcedProvider?.title, |
| 1073 | 'bestRateProvider': bestRateProvider?.title, |
| 1074 | }, |
| 1075 | ); |
| 1076 | |
| 1077 | final invalidAmountError = depositAmountValue.isZero || depositAmountValue.isNegative |
| 1078 | ? '$depositAmountValue is not a valid amount for depositAmount' |
| 1079 | : '$receiveAmountValue is not a valid amount for receiveAmount'; |
| 1080 | |
| 1081 | tradeState = |
| 1082 | TradeIsCreatedFailure(title: S.current.trade_not_created, error: invalidAmountError); |
| 1083 | return; |
| 1084 | } |
| 1085 | |
| 1086 | if (isSendAllEnabled) { |
| 1087 | await calculateDepositAllAmount(); |
| 1088 | final amount = double.tryParse(_depositAmount.toString()); |
| 1089 | |
| 1090 | if (limits.min != null && amount != null && amount < limits.min!) { |
| 1091 | tradeState = TradeIsCreatedFailure( |
| 1092 | title: S.current.trade_not_created, |
| 1093 | error: S.current.amount_is_below_minimum_limit(limits.min!.toString()), |
| 1094 | ); |
| 1095 | return; |
| 1096 | } |
| 1097 | } |
| 1098 | |
| 1099 | if (depositCurrency == CryptoCurrency.btcln && |
| 1100 | wallet.type == WalletType.bitcoin && |
| 1101 | depositAddress == wallet.walletAddresses.addressForExchange) { |
| 1102 | final invoice = await bitcoin!.getLightningInvoice(wallet, BigInt.zero); |
| 1103 | if (invoice != null) { |
| 1104 | depositAddress = invoice; |
| 1105 | } |
| 1106 | } |
| 1107 | |
| 1108 | if (receiveCurrency == CryptoCurrency.btcln && |
| 1109 | wallet.type == WalletType.bitcoin && |
| 1110 | receiveAddress == wallet.walletAddresses.addressForExchange) { |
| 1111 | final invoice = await bitcoin!.getLightningInvoice(wallet, BigInt.zero); |
| 1112 | if (invoice != null) { |
| 1113 | receiveAddress = invoice; |
| 1114 | } |
| 1115 | } |
| 1116 | |
| 1117 | if (forcedProvider != null && _excludeProviderForReceiveExtraId(forcedProvider!)) { |
| 1118 | tradeState = TradeIsCreatedFailure( |
| 1119 | title: S.current.trade_not_created, |
| 1120 | error: S.current.none_of_selected_providers_can_exchange, |
| 1121 | ); |
| 1122 | return; |
| 1123 | } |
| 1124 | |
| 1125 | Map<double, ExchangeProvider> providers; |
| 1126 | if (forcedProvider != null) { |
| 1127 | providers = {forcedProviderRate: forcedProvider!}; |
| 1128 | } else { |
| 1129 | providers = Map.fromEntries( |
| 1130 | _sortedAvailableProviders.entries.where( |
| 1131 | (e) => selectedProviders.contains(e.value), |
| 1132 | ), |
| 1133 | ); |
| 1134 | } |
| 1135 | |
| 1136 | // Ensure we have providers available before attempting to create trade |
| 1137 | if (providers.isEmpty) { |
| 1138 | await calculateBestRate(); |
| 1139 | if (forcedProvider != null) { |
| 1140 | providers = {forcedProviderRate: forcedProvider!}; |
| 1141 | } else { |
| 1142 | providers = Map.fromEntries( |
| 1143 | _sortedAvailableProviders.entries.where( |
| 1144 | (e) => selectedProviders.contains(e.value), |
| 1145 | ), |
| 1146 | ); |
| 1147 | } |
| 1148 | |
| 1149 | if (providers.isEmpty) { |
| 1150 | ExchangeProviderLogger.logError( |
| 1151 | provider: null, |
| 1152 | function: 'createTrade', |
| 1153 | error: 'No providers available for $depositCurrency->$receiveCurrency', |
| 1154 | requestData: { |
| 1155 | 'from': depositCurrency.title, |
| 1156 | 'to': receiveCurrency.title, |
| 1157 | 'fromAmount': _depositAmount, |
| 1158 | 'toAmount': _receiveAmount, |
| 1159 | }, |
| 1160 | ); |
| 1161 | tradeState = TradeIsCreatedFailure( |
| 1162 | title: S.current.trade_not_created, |
| 1163 | error: S.current.none_of_selected_providers_can_exchange); |
| 1164 | return; |
| 1165 | } |
| 1166 | } |
| 1167 | |
| 1168 | try { |
| 1169 | if (selectedAddressBookWallet?.type == WalletType.bitcoin) { |
| 1170 | final _walletAddresses = await selectedAddressBookWallet!.getAddresses(); |
| 1171 | |
| 1172 | // if receive currency is lightning pick the lightning address |
| 1173 | // if normal bitcoin, then pick the segwit address |
| 1174 | if (receiveCurrency == CryptoCurrency.btcln) { |
| 1175 | final lightningAddressOfWallet = |
| 1176 | _walletAddresses.entries.firstWhereOrNull((e) => e.value.contains("LN"))?.key; |
| 1177 | if (lightningAddressOfWallet != null) { |
| 1178 | receiveAddress = lightningAddressOfWallet; |
| 1179 | } |
| 1180 | } |
| 1181 | if (receiveCurrency == CryptoCurrency.btc) { |
| 1182 | final segwitAddressOfWallet = |
| 1183 | _walletAddresses.entries.firstWhereOrNull((e) => e.value.contains("P2WPKH"))?.key; |
| 1184 | if (segwitAddressOfWallet != null) { |
| 1185 | receiveAddress = segwitAddressOfWallet; |
| 1186 | } |
| 1187 | } |
| 1188 | } |
| 1189 | |
| 1190 | if (receiveCurrency == CryptoCurrency.zec && |
| 1191 | selectedAddressBookWallet?.type == WalletType.zcash) { |
| 1192 | if (wallet.type == WalletType.zcash && wallet.name == selectedAddressBookWallet!.name) { |
| 1193 | receiveAddress = wallet.walletAddresses.addressForExchange; |
| 1194 | } else { |
| 1195 | receiveAddress = (await selectedAddressBookWallet!.getAddresses()) |
| 1196 | .entries |
| 1197 | .firstWhereOrNull((e) => e.value == 'transparent') |
| 1198 | ?.key ?? |
| 1199 | receiveAddress; |
| 1200 | } |
| 1201 | } |
| 1202 | |
| 1203 | // parse Lightning address to bolt11 invoice |
| 1204 | if (receiveAddress.contains("@")) { |
| 1205 | receiveAddress = await getBolt11FromLightingAddress(receiveAddress) ?? receiveAddress; |
| 1206 | } |
| 1207 | |
| 1208 | // snapshot of providers to avoid concurrent modification issues |
| 1209 | final providersSnapshot = providers.values.toList(); |
| 1210 | final ratesSnapshot = providers.keys.toList(); |
| 1211 | |
| 1212 | for (var i = 0; i < providersSnapshot.length; i++) { |
| 1213 | final provider = providersSnapshot[i]; |
| 1214 | final providerRate = ratesSnapshot[i]; |
| 1215 | |
| 1216 | printV('createTrade: trying provider=${provider.title}'); |
| 1217 | |
| 1218 | if (_excludeProviderForSwapAll(provider)) { |
| 1219 | printV('Skipping Swaps.xyz or Near Intents for swap all'); |
| 1220 | continue; |
| 1221 | } |
| 1222 | // should not happen but just as an extra check |
| 1223 | if (isFixedRateMode && provider.supportsFixedRate == false) { |
| 1224 | continue; |
| 1225 | } |
| 1226 | |
| 1227 | if (_excludeProviderForReceiveExtraId(provider)) { |
| 1228 | continue; |
| 1229 | } |
| 1230 | |
| 1231 | // Skip Swaps.xyz when sending from external |
| 1232 | if (isSendFromExternal && provider.description == ExchangeProviderDescription.swapsXyz) { |
| 1233 | printV('Skipping Swaps.xyz for external send'); |
| 1234 | continue; |
| 1235 | } |
| 1236 | |
| 1237 | if (!(await provider.checkIsAvailable())) continue; |
| 1238 | |
| 1239 | bestRate = providerRate; |
| 1240 | bestRateProvider = provider; |
| 1241 | |
| 1242 | await changeDepositAmount(amount: _depositAmount.toString(), isCanonical: true); |
| 1243 | |
| 1244 | final request = TradeRequest( |
| 1245 | fromCurrency: depositCurrency, |
| 1246 | toCurrency: receiveCurrency, |
| 1247 | fromAmount: _depositAmount.toString(), |
| 1248 | toAmount: _receiveAmount.toString(), |
| 1249 | refundAddress: depositAddress, |
| 1250 | toAddress: receiveAddress, |
| 1251 | toAddressExtraId: receiveAddressExtraId.trim(), |
| 1252 | isFixedRate: isFixedRateMode, |
| 1253 | ); |
| 1254 | |
| 1255 | if (hideAddressAfterExchange) { |
| 1256 | wallet.walletAddresses.hiddenAddresses.add(depositAddress); |
| 1257 | await wallet.walletAddresses.saveAddressesInBox(); |
| 1258 | } |
| 1259 | |
| 1260 | var amount = isFixedRateMode ? _receiveAmount.toString() : _depositAmount.toString(); |
| 1261 | |
| 1262 | if (limitsState is LimitsLoadedSuccessfully) { |
| 1263 | if (double.tryParse(amount) == null) { |
| 1264 | printV('createTrade: ${provider.title} amount parse failed: "$amount"'); |
| 1265 | continue; |
| 1266 | } |
| 1267 | |
| 1268 | if (limits.min != null && double.parse(amount) < limits.min!) { |
| 1269 | continue; |
| 1270 | } else if (limits.max != null && double.parse(amount) > limits.max!) { |
| 1271 | continue; |
| 1272 | } else { |
| 1273 | try { |
| 1274 | tradeState = TradeIsCreating(); |
| 1275 | final trade = await provider.createTrade( |
| 1276 | request: request, |
| 1277 | isFixedRateMode: isFixedRateMode, |
| 1278 | isSendAll: isSendAllEnabled, |
| 1279 | ); |
| 1280 | trade.walletId = wallet.id; |
| 1281 | trade.chainId = wallet.chainId; |
| 1282 | trade.fromWalletAddress = wallet.walletAddresses.address; |
| 1283 | if (trade.from == null) { |
| 1284 | trade.from = depositCurrency; |
| 1285 | } |
| 1286 | if (trade.to == null) { |
| 1287 | trade.to = receiveCurrency; |
| 1288 | } |
| 1289 | |
| 1290 | final canCreateTrade = await isCanCreateTrade(trade); |
| 1291 | if (!canCreateTrade.result) { |
| 1292 | ExchangeProviderLogger.logError( |
| 1293 | provider: provider.description, |
| 1294 | function: 'createTrade', |
| 1295 | error: canCreateTrade.errorMessage ?? 'isCanCreateTrade returned false', |
| 1296 | requestData: { |
| 1297 | 'from': depositCurrency.title, |
| 1298 | 'to': receiveCurrency.title, |
| 1299 | 'fromAmount': _depositAmount, |
| 1300 | 'toAmount': _receiveAmount, |
| 1301 | }, |
| 1302 | ); |
| 1303 | continue; |
| 1304 | } |
| 1305 | |
| 1306 | tradesStore.setTrade(trade); |
| 1307 | if (trade.provider != ExchangeProviderDescription.thorChain) await trade.save(); |
| 1308 | tradeState = TradeIsCreatedSuccessfully(trade: trade); |
| 1309 | |
| 1310 | /// return after the first successful trade |
| 1311 | return; |
| 1312 | } catch (e, s) { |
| 1313 | ExchangeProviderLogger.logError( |
| 1314 | provider: provider.description, |
| 1315 | function: 'createTrade', |
| 1316 | error: e, |
| 1317 | stackTrace: s, |
| 1318 | requestData: { |
| 1319 | 'from': depositCurrency.title, |
| 1320 | 'to': receiveCurrency.title, |
| 1321 | 'fromAmount': _depositAmount, |
| 1322 | 'toAmount': _receiveAmount, |
| 1323 | 'toAddress': receiveAddress, |
| 1324 | 'refundAddress': depositAddress, |
| 1325 | }, |
| 1326 | ); |
| 1327 | continue; |
| 1328 | } |
| 1329 | } |
| 1330 | } |
| 1331 | } |
| 1332 | |
| 1333 | /// if the code reached here then none of the providers succeeded |
| 1334 | tradeState = TradeIsCreatedFailure( |
| 1335 | title: S.current.trade_not_created, |
| 1336 | error: S.current.none_of_selected_providers_can_exchange); |
| 1337 | } on ConcurrentModificationError { |
| 1338 | /// if create trade happened at the exact same time of the scheduled rate update |
| 1339 | /// then delay the create trade a bit and try again |
| 1340 | /// |
| 1341 | /// this is because the limitation of the SplayTreeMap that |
| 1342 | /// you can't modify it while iterating through it |
| 1343 | Future.delayed(Duration(milliseconds: 200), createTrade); |
| 1344 | } |
| 1345 | } |
| 1346 | |
| 1347 | @action |
| 1348 | void reset() { |
| 1349 | _initialPairBasedOnWallet(); |
| 1350 | isReceiveAmountEntered = false; |
| 1351 | _depositAmount = null; |
| 1352 | _receiveAmount = null; |
| 1353 | depositAddress = |
| 1354 | depositCurrency == wallet.currency ? wallet.walletAddresses.addressForExchange : ''; |
| 1355 | receiveAddress = |
| 1356 | receiveCurrency == wallet.currency ? wallet.walletAddresses.addressForExchange : ''; |
| 1357 | receiveAddressExtraId = ''; |
| 1358 | isDepositAddressEnabled = !(depositCurrency == wallet.currency); |
| 1359 | isFixedRateMode = false; |
| 1360 | _onPairChange(); |
| 1361 | } |
| 1362 | |
| 1363 | @action |
| 1364 | void enableSendAllAmount() { |
| 1365 | isSendAllEnabled = true; |
| 1366 | isFixedRateMode = false; |
| 1367 | calculateDepositAllAmount(); |
| 1368 | } |
| 1369 | |
| 1370 | @action |
| 1371 | void enableFixedRateMode() { |
| 1372 | isSendAllEnabled = false; |
| 1373 | isFixedRateMode = true; |
| 1374 | } |
| 1375 | |
| 1376 | @action |
| 1377 | Future<void> calculateDepositAllAmount() async { |
| 1378 | if ([ |
| 1379 | WalletType.litecoin, |
| 1380 | WalletType.bitcoin, |
| 1381 | WalletType.bitcoinCash, |
| 1382 | WalletType.dogecoin, |
| 1383 | ].contains(wallet.type)) { |
| 1384 | final priority = _settingsStore.getPriority(wallet.type)!; |
| 1385 | |
| 1386 | final amount = depositCurrency == CryptoCurrency.btcln |
| 1387 | // FIXME amount estimation is broken/impossible for ln, konsti suggested this |
| 1388 | ? (amountParsingProxy.parseCryptoString(depositAvailableAmount, depositCurrency) - |
| 1389 | Money.fromInt(10, depositCurrency)) |
| 1390 | : await bitcoin!.estimateFakeSendAllTxAmount( |
| 1391 | wallet, |
| 1392 | priority, |
| 1393 | coinTypeToSpendFrom: wallet.type == WalletType.litecoin |
| 1394 | ? UnspentCoinType.nonMweb |
| 1395 | : depositCurrency == CryptoCurrency.btcln |
| 1396 | ? UnspentCoinType.lightning |
| 1397 | : UnspentCoinType.any, |
| 1398 | ); |
| 1399 | |
| 1400 | changeDepositAmount(amount: amount.toString(), isCanonical: true); |
| 1401 | } else if (wallet.type == WalletType.monero) { |
| 1402 | final amount = await unspentCoinsListViewModel.getSendingBalance(UnspentCoinType.any); |
| 1403 | |
| 1404 | changeDepositAmount( |
| 1405 | amount: wallet.currency.formatAmount(BigInt.from(amount)), isCanonical: true); |
| 1406 | } else if (isEVMCompatibleChain(wallet.type)) { |
| 1407 | final balanceCurrency = wallet.balance.keys.firstWhereOrNull( |
| 1408 | (currency) => |
| 1409 | currency.title == depositCurrency.title && |
| 1410 | (currency.tag == depositCurrency.tag || currency.tag == depositCurrency.title), |
| 1411 | ); |
| 1412 | |
| 1413 | final balanceForCurrency = balanceCurrency != null ? wallet.balance[balanceCurrency] : null; |
| 1414 | if (balanceForCurrency == null) { |
| 1415 | changeDepositAmount(amount: wallet.currency.formatAmount(BigInt.zero), isCanonical: true); |
| 1416 | return; |
| 1417 | } |
| 1418 | |
| 1419 | final balanceAmount = |
| 1420 | _appStore.amountParsingProxy.asDisplayString(balanceForCurrency.available); |
| 1421 | final balanceDouble = double.tryParse(balanceAmount.replaceAll(',', '.')) ?? 0.0; |
| 1422 | if (balanceDouble <= 0) { |
| 1423 | changeDepositAmount(amount: wallet.currency.formatAmount(BigInt.zero), isCanonical: true); |
| 1424 | return; |
| 1425 | } |
| 1426 | |
| 1427 | final isNative = depositCurrency == wallet.currency; |
| 1428 | |
| 1429 | if (!isNative) { |
| 1430 | changeDepositAmount(amount: balanceAmount, isCanonical: true); |
| 1431 | return; |
| 1432 | } |
| 1433 | |
| 1434 | try { |
| 1435 | final priority = _settingsStore.getPriority(wallet.type, chainId: wallet.chainId); |
| 1436 | await wallet.updateEstimatedFeesParams(priority); |
| 1437 | |
| 1438 | String? feeString; |
| 1439 | if (isEVMCompatibleChain(wallet.type)) { |
| 1440 | feeString = evm!.getEVMNativeEstimatedFee(wallet); |
| 1441 | } |
| 1442 | |
| 1443 | if (feeString == null || feeString.isEmpty) { |
| 1444 | changeDepositAmount(amount: balanceAmount, isCanonical: true); |
| 1445 | return; |
| 1446 | } |
| 1447 | |
| 1448 | final balanceWei = balanceForCurrency.available.amount; |
| 1449 | final feeWei = BigInt.parse(feeString); |
| 1450 | final amountAfterFeeWei = balanceWei > feeWei ? balanceWei - feeWei : BigInt.zero; |
| 1451 | changeDepositAmount( |
| 1452 | amount: wallet.currency.formatAmount(amountAfterFeeWei), isCanonical: true); |
| 1453 | } catch (e) { |
| 1454 | printV('Error calculating send all for EVM: $e'); |
| 1455 | changeDepositAmount(amount: balanceAmount, isCanonical: true); |
| 1456 | } |
| 1457 | } |
| 1458 | } |
| 1459 | |
| 1460 | @observable |
| 1461 | String depositAvailableAmount = ""; |
| 1462 | |
| 1463 | @action |
| 1464 | void reverseSwapDirection() { |
| 1465 | final tmpAmount = _receiveAmount; |
| 1466 | final tmpCurrency = depositCurrency; |
| 1467 | changeDepositCurrency(currency: receiveCurrency); |
| 1468 | changeReceiveCurrency(currency: tmpCurrency); |
| 1469 | _depositAmount = tmpAmount; |
| 1470 | } |
| 1471 | |
| 1472 | void updateTemplate() => _exchangeTemplateStore.update(); |
| 1473 | |
| 1474 | void addTemplate( |
| 1475 | {required String amount, |
| 1476 | required String depositCurrency, |
| 1477 | required String receiveCurrency, |
| 1478 | required String provider, |
| 1479 | required String depositAddress, |
| 1480 | required String receiveAddress, |
| 1481 | required String depositCurrencyTitle, |
| 1482 | required String receiveCurrencyTitle}) => |
| 1483 | _exchangeTemplateStore.addTemplate( |
| 1484 | amount: amount, |
| 1485 | depositCurrency: depositCurrency, |
| 1486 | receiveCurrency: receiveCurrency, |
| 1487 | provider: provider, |
| 1488 | depositAddress: depositAddress, |
| 1489 | receiveAddress: receiveAddress, |
| 1490 | depositCurrencyTitle: depositCurrencyTitle, |
| 1491 | receiveCurrencyTitle: receiveCurrencyTitle); |
| 1492 | |
| 1493 | void removeTemplate({required ExchangeTemplate template}) => |
| 1494 | _exchangeTemplateStore.remove(template: template); |
| 1495 | |
| 1496 | void _onPairChange({bool clearBoth = false}) { |
| 1497 | if (clearBoth) { |
| 1498 | _depositAmount = null; |
| 1499 | _receiveAmount = null; |
| 1500 | if (!hasAllAmount) isSendAllEnabled = false; |
| 1501 | } else { |
| 1502 | if (isFixedRateMode) { |
| 1503 | _depositAmount = null; |
| 1504 | } else { |
| 1505 | _receiveAmount = null; |
| 1506 | } |
| 1507 | } |
| 1508 | bestRate = 0.0; |
| 1509 | bestRateProvider = null; |
| 1510 | _sortedAvailableProviders.clear(); |
| 1511 | loadLimits().then((_) { |
| 1512 | if (clearBoth && hasAllAmount) { |
| 1513 | calculateDepositAllAmount(); |
| 1514 | } |
| 1515 | }); |
| 1516 | _setAvailableProviders(); |
| 1517 | } |
| 1518 | |
| 1519 | void _initialPairBasedOnWallet() { |
| 1520 | if (isEVMCompatibleChain(wallet.type)) { |
| 1521 | depositCurrency = wallet.currency; |
| 1522 | receiveCurrency = CryptoCurrency.xmr; |
| 1523 | return; |
| 1524 | } |
| 1525 | |
| 1526 | switch (wallet.type) { |
| 1527 | case WalletType.monero: |
| 1528 | depositCurrency = CryptoCurrency.xmr; |
| 1529 | receiveCurrency = CryptoCurrency.btc; |
| 1530 | break; |
| 1531 | case WalletType.bitcoin: |
| 1532 | depositCurrency = CryptoCurrency.btc; |
| 1533 | receiveCurrency = CryptoCurrency.xmr; |
| 1534 | break; |
| 1535 | case WalletType.litecoin: |
| 1536 | depositCurrency = CryptoCurrency.ltc; |
| 1537 | receiveCurrency = CryptoCurrency.xmr; |
| 1538 | break; |
| 1539 | case WalletType.bitcoinCash: |
| 1540 | depositCurrency = CryptoCurrency.bch; |
| 1541 | receiveCurrency = CryptoCurrency.xmr; |
| 1542 | break; |
| 1543 | case WalletType.dogecoin: |
| 1544 | depositCurrency = CryptoCurrency.doge; |
| 1545 | receiveCurrency = CryptoCurrency.xmr; |
| 1546 | break; |
| 1547 | case WalletType.haven: |
| 1548 | depositCurrency = CryptoCurrency.xhv; |
| 1549 | receiveCurrency = CryptoCurrency.btc; |
| 1550 | break; |
| 1551 | case WalletType.ethereum: |
| 1552 | depositCurrency = CryptoCurrency.eth; |
| 1553 | receiveCurrency = CryptoCurrency.xmr; |
| 1554 | break; |
| 1555 | case WalletType.nano: |
| 1556 | depositCurrency = CryptoCurrency.nano; |
| 1557 | receiveCurrency = CryptoCurrency.xmr; |
| 1558 | break; |
| 1559 | case WalletType.banano: |
| 1560 | depositCurrency = CryptoCurrency.banano; |
| 1561 | receiveCurrency = CryptoCurrency.xmr; |
| 1562 | break; |
| 1563 | case WalletType.polygon: |
| 1564 | depositCurrency = CryptoCurrency.maticpoly; |
| 1565 | receiveCurrency = CryptoCurrency.xmr; |
| 1566 | break; |
| 1567 | case WalletType.base: |
| 1568 | depositCurrency = CryptoCurrency.baseEth; |
| 1569 | receiveCurrency = CryptoCurrency.xmr; |
| 1570 | break; |
| 1571 | case WalletType.arbitrum: |
| 1572 | depositCurrency = CryptoCurrency.arbEth; |
| 1573 | receiveCurrency = CryptoCurrency.xmr; |
| 1574 | break; |
| 1575 | case WalletType.bsc: |
| 1576 | depositCurrency = CryptoCurrency.bnb; |
| 1577 | receiveCurrency = CryptoCurrency.xmr; |
| 1578 | break; |
| 1579 | case WalletType.solana: |
| 1580 | depositCurrency = CryptoCurrency.sol; |
| 1581 | receiveCurrency = CryptoCurrency.xmr; |
| 1582 | break; |
| 1583 | case WalletType.tron: |
| 1584 | depositCurrency = CryptoCurrency.trx; |
| 1585 | receiveCurrency = CryptoCurrency.xmr; |
| 1586 | break; |
| 1587 | case WalletType.wownero: |
| 1588 | depositCurrency = CryptoCurrency.wow; |
| 1589 | receiveCurrency = CryptoCurrency.xmr; |
| 1590 | break; |
| 1591 | case WalletType.zano: |
| 1592 | depositCurrency = CryptoCurrency.zano; |
| 1593 | receiveCurrency = CryptoCurrency.xmr; |
| 1594 | break; |
| 1595 | case WalletType.decred: |
| 1596 | depositCurrency = CryptoCurrency.dcr; |
| 1597 | receiveCurrency = CryptoCurrency.xmr; |
| 1598 | break; |
| 1599 | case WalletType.zcash: |
| 1600 | depositCurrency = CryptoCurrency.zec; |
| 1601 | receiveCurrency = CryptoCurrency.xmr; |
| 1602 | break; |
| 1603 | case WalletType.none: |
| 1604 | break; |
| 1605 | } |
| 1606 | } |
| 1607 | |
| 1608 | void _defineIsReceiveAmountEditable() { |
| 1609 | /*if ((provider is ChangeNowExchangeProvider) |
| 1610 | &&(depositCurrency == CryptoCurrency.xmr) |
| 1611 | &&(receiveCurrency == CryptoCurrency.btc)) { |
| 1612 | isReceiveAmountEditable = true; |
| 1613 | } else { |
| 1614 | isReceiveAmountEditable = false; |
| 1615 | }*/ |
| 1616 | //isReceiveAmountEditable = false; |
| 1617 | // isReceiveAmountEditable = selectedProviders.any((provider) => provider is ChangeNowExchangeProvider); |
| 1618 | // isReceiveAmountEditable = provider is ChangeNowExchangeProvider || provider is SimpleSwapExchangeProvider; |
| 1619 | isReceiveAmountEditable = true; |
| 1620 | } |
| 1621 | |
| 1622 | @action |
| 1623 | void addExchangeProvider(ExchangeProvider provider) { |
| 1624 | if (provider.description.isCentralized && forceDecentralizedExchanges) return; |
| 1625 | if (!selectedProviders.contains(provider)) selectedProviders.add(provider); |
| 1626 | if (providerList.contains(provider)) _tradeAvailableProviders.add(provider); |
| 1627 | } |
| 1628 | |
| 1629 | @action |
| 1630 | void removeExchangeProvider(ExchangeProvider provider) { |
| 1631 | selectedProviders.remove(provider); |
| 1632 | _tradeAvailableProviders.remove(provider); |
| 1633 | if (forcedProvider == provider) { |
| 1634 | setForcedProvider(null); |
| 1635 | } |
| 1636 | } |
| 1637 | |
| 1638 | @action |
| 1639 | void saveSelectedProviders() { |
| 1640 | _depositAmount = null; |
| 1641 | _receiveAmount = null; |
| 1642 | isFixedRateMode = false; |
| 1643 | _defineIsReceiveAmountEditable(); |
| 1644 | bestRateProvider = null; |
| 1645 | bestRate = 0.0; |
| 1646 | loadLimits(); |
| 1647 | |
| 1648 | final Map<String, dynamic> exchangeProvidersSelection = |
| 1649 | json.decode(sharedPreferences.getString(PreferencesKey.exchangeProvidersSelection) ?? "{}") |
| 1650 | as Map<String, dynamic>; |
| 1651 | |
| 1652 | for (var provider in providerList) { |
| 1653 | exchangeProvidersSelection[provider.title] = selectedProviders.contains(provider); |
| 1654 | } |
| 1655 | |
| 1656 | sharedPreferences.setString( |
| 1657 | PreferencesKey.exchangeProvidersSelection, |
| 1658 | json.encode(exchangeProvidersSelection), |
| 1659 | ); |
| 1660 | } |
| 1661 | |
| 1662 | @action |
| 1663 | Future<void> updateAllTrocadorProviderStates(TrocadorExchangeProvider trocadorProvider) async { |
| 1664 | try { |
| 1665 | var providers = await trocadorProvider.fetchProviders(); |
| 1666 | var providerNames = providers.map((e) => e.name).toList(); |
| 1667 | await _settingsStore.updateAllTrocadorProviderStates(providerNames); |
| 1668 | } catch (e) { |
| 1669 | printV('Error updating trocador provider states: $e'); |
| 1670 | } |
| 1671 | } |
| 1672 | |
| 1673 | bool get isAvailableInSelected { |
| 1674 | return selectedProviders |
| 1675 | .any((element) => element.isAvailable && providerList.contains(element)); |
| 1676 | } |
| 1677 | |
| 1678 | @computed |
| 1679 | bool get forceDecentralizedExchanges => _settingsStore.forceDecentralizedExchanges; |
| 1680 | |
| 1681 | @action |
| 1682 | void toggleForceDecentralizedExchanges() { |
| 1683 | _settingsStore.forceDecentralizedExchanges = !_settingsStore.forceDecentralizedExchanges; |
| 1684 | if (forceDecentralizedExchanges) { |
| 1685 | final providers = selectedProviders.toList(); |
| 1686 | for (final provider in providers) { |
| 1687 | if (forceDecentralizedExchanges && provider.description.isCentralized) { |
| 1688 | removeExchangeProvider(provider); |
| 1689 | } |
| 1690 | } |
| 1691 | } else { |
| 1692 | for (final provider in providerList) { |
| 1693 | if (!selectedProviders.contains(provider) && provider.description.isCentralized) { |
| 1694 | addExchangeProvider(provider); |
| 1695 | } |
| 1696 | } |
| 1697 | } |
| 1698 | } |
| 1699 | |
| 1700 | void _setAvailableProviders() { |
| 1701 | _tradeAvailableProviders.clear(); |
| 1702 | |
| 1703 | _tradeAvailableProviders |
| 1704 | .addAll(selectedProviders.where((provider) => providerList.contains(provider))); |
| 1705 | } |
| 1706 | |
| 1707 | void _setProviders() { |
| 1708 | if (_settingsStore.exchangeStatus == ExchangeApiMode.torOnly) |
| 1709 | providerList = _allProviders.where((provider) => provider.supportsOnionAddress).toList(); |
| 1710 | else |
| 1711 | providerList = _allProviders; |
| 1712 | } |
| 1713 | |
| 1714 | int get depositMaxDigits => depositCurrency.decimals; |
| 1715 | |
| 1716 | int get receiveMaxDigits => receiveCurrency.decimals; |
| 1717 | |
| 1718 | Future<CreateTradeResult> isCanCreateTrade(Trade trade) async { |
| 1719 | if (trade.provider == ExchangeProviderDescription.swapsXyz) { |
| 1720 | final tradeFrom = trade.from; |
| 1721 | |
| 1722 | if (tradeFrom == null) { |
| 1723 | return CreateTradeResult( |
| 1724 | result: false, |
| 1725 | errorMessage: 'From currency is null', |
| 1726 | ); |
| 1727 | } |
| 1728 | |
| 1729 | final isNativeSupportedToken = |
| 1730 | walletTypes.contains(cryptoCurrencyOrTokenToWalletType(tradeFrom)); |
| 1731 | |
| 1732 | if (!isNativeSupportedToken) { |
| 1733 | bool _isEthToken() => |
| 1734 | wallet.currency == CryptoCurrency.eth && tradeFrom.tag == CryptoCurrency.eth.title; |
| 1735 | |
| 1736 | bool _isPolygonToken() => |
| 1737 | wallet.currency == CryptoCurrency.maticpoly && |
| 1738 | tradeFrom.tag == CryptoCurrency.maticpoly.tag; |
| 1739 | |
| 1740 | bool _isBaseToken() => |
| 1741 | wallet.currency == CryptoCurrency.baseEth && |
| 1742 | tradeFrom.tag == CryptoCurrency.baseEth.tag; |
| 1743 | |
| 1744 | bool _isTronToken() => |
| 1745 | wallet.currency == CryptoCurrency.trx && tradeFrom.tag == CryptoCurrency.trx.title; |
| 1746 | |
| 1747 | bool _isSplToken() => |
| 1748 | wallet.currency == CryptoCurrency.sol && tradeFrom.tag == CryptoCurrency.sol.title; |
| 1749 | |
| 1750 | bool isArbitrumToken() => |
| 1751 | wallet.currency == CryptoCurrency.arbEth && tradeFrom.tag == CryptoCurrency.arbEth.tag; |
| 1752 | |
| 1753 | bool isBscToken() => |
| 1754 | wallet.currency == CryptoCurrency.bnb && tradeFrom.tag == CryptoCurrency.bnb.tag; |
| 1755 | |
| 1756 | if (!(_isEthToken() || |
| 1757 | _isPolygonToken() || |
| 1758 | _isBaseToken() || |
| 1759 | _isTronToken() || |
| 1760 | _isSplToken() || |
| 1761 | isArbitrumToken() || |
| 1762 | isBscToken())) { |
| 1763 | return CreateTradeResult( |
| 1764 | result: false, |
| 1765 | errorMessage: |
| 1766 | 'This token isn’t supported on the current wallet/network for Swaps.xyz. Switch to a supported wallet or asset', |
| 1767 | ); |
| 1768 | } |
| 1769 | } |
| 1770 | } |
| 1771 | |
| 1772 | if (trade.provider == ExchangeProviderDescription.thorChain) { |
| 1773 | final payoutAddress = trade.payoutAddress ?? ''; |
| 1774 | final fromWalletAddress = trade.fromWalletAddress ?? ''; |
| 1775 | final tapRootPattern = RegExp(P2trAddress.regex.pattern); |
| 1776 | |
| 1777 | if (tapRootPattern.hasMatch(payoutAddress) || tapRootPattern.hasMatch(fromWalletAddress)) { |
| 1778 | return CreateTradeResult( |
| 1779 | result: false, |
| 1780 | errorMessage: S.current.thorchain_taproot_address_not_supported, |
| 1781 | ); |
| 1782 | } |
| 1783 | |
| 1784 | if ((trade.memo == null || trade.memo!.isEmpty)) { |
| 1785 | return CreateTradeResult( |
| 1786 | result: false, |
| 1787 | errorMessage: 'Memo is required for Thorchain trade', |
| 1788 | ); |
| 1789 | } |
| 1790 | |
| 1791 | final currenciesToCheckPattern = RegExp('0x[0-9a-zA-Z]'); |
| 1792 | |
| 1793 | // Perform checks for payOutAddress |
| 1794 | final isPayOutAddressAccordingToPattern = currenciesToCheckPattern.hasMatch(payoutAddress); |
| 1795 | |
| 1796 | if (isPayOutAddressAccordingToPattern) { |
| 1797 | final isPayOutAddressEOA = await _isExternallyOwnedAccountAddress(payoutAddress); |
| 1798 | |
| 1799 | return CreateTradeResult( |
| 1800 | result: isPayOutAddressEOA, |
| 1801 | errorMessage: |
| 1802 | !isPayOutAddressEOA ? S.current.thorchain_contract_address_not_supported : null, |
| 1803 | ); |
| 1804 | } |
| 1805 | |
| 1806 | // Perform checks for fromWalletAddress |
| 1807 | final isFromWalletAddressAddressAccordingToPattern = |
| 1808 | currenciesToCheckPattern.hasMatch(fromWalletAddress); |
| 1809 | |
| 1810 | if (isFromWalletAddressAddressAccordingToPattern) { |
| 1811 | final isFromWalletAddressEOA = await _isExternallyOwnedAccountAddress(fromWalletAddress); |
| 1812 | |
| 1813 | return CreateTradeResult( |
| 1814 | result: isFromWalletAddressEOA, |
| 1815 | errorMessage: |
| 1816 | !isFromWalletAddressEOA ? S.current.thorchain_contract_address_not_supported : null, |
| 1817 | ); |
| 1818 | } |
| 1819 | } |
| 1820 | return CreateTradeResult(result: true); |
| 1821 | } |
| 1822 | |
| 1823 | String _normalizeReceiveCurrency(CryptoCurrency receiveCurrency) { |
| 1824 | switch (receiveCurrency) { |
| 1825 | case CryptoCurrency.eth: |
| 1826 | return 'eth'; |
| 1827 | case CryptoCurrency.maticpoly: |
| 1828 | return 'polygon'; |
| 1829 | default: |
| 1830 | return receiveCurrency.tag ?? ''; |
| 1831 | } |
| 1832 | } |
| 1833 | |
| 1834 | Future<bool> _isExternallyOwnedAccountAddress(String receivingAddress) async { |
| 1835 | final normalizedReceiveCurrency = _normalizeReceiveCurrency(receiveCurrency); |
| 1836 | |
| 1837 | final isEOAAddress = !(await _isContractAddress(normalizedReceiveCurrency, receivingAddress)); |
| 1838 | return isEOAAddress; |
| 1839 | } |
| 1840 | |
| 1841 | Future<bool> _isContractAddress(String chainName, String contractAddress) async { |
| 1842 | final uri = Uri.https( |
| 1843 | 'deep-index.moralis.io', |
| 1844 | '/api/v2.2/erc20/metadata', |
| 1845 | { |
| 1846 | "chain": chainName, |
| 1847 | "addresses": contractAddress, |
| 1848 | }, |
| 1849 | ); |
| 1850 | |
| 1851 | try { |
| 1852 | final response = await ProxyWrapper().get( |
| 1853 | clearnetUri: uri, |
| 1854 | headers: { |
| 1855 | "Accept": "application/json", |
| 1856 | "X-API-Key": secrets.moralisApiKey, |
| 1857 | }, |
| 1858 | ); |
| 1859 | |
| 1860 | final decodedResponse = jsonDecode(response.body)[0] as Map<String, dynamic>; |
| 1861 | |
| 1862 | final name = decodedResponse['name'] as String?; |
| 1863 | |
| 1864 | bool isContractAddress = name!.isNotEmpty; |
| 1865 | |
| 1866 | return isContractAddress; |
| 1867 | } catch (e) { |
| 1868 | printV(e); |
| 1869 | return false; |
| 1870 | } |
| 1871 | } |
| 1872 | |
| 1873 | // Adding user's Erc20 tokens to the list of currencies |
| 1874 | |
| 1875 | @action |
| 1876 | Future<void> _injectUserEthTokensIntoCurrencyLists() async { |
| 1877 | final tokens = await TokenUtilities.loadEvmTokensForSwap(); |
| 1878 | final toAddReceive = <CryptoCurrency>[]; |
| 1879 | final toAddDeposit = <CryptoCurrency>[]; |
| 1880 | |
| 1881 | for (final token in tokens) { |
| 1882 | if (!_listContainsToken(receiveCurrencies, token)) toAddReceive.add(token); |
| 1883 | if (!_listContainsToken(depositCurrencies, token)) toAddDeposit.add(token); |
| 1884 | } |
| 1885 | |
| 1886 | if (toAddReceive.isNotEmpty) receiveCurrencies.addAll(toAddReceive); |
| 1887 | if (toAddDeposit.isNotEmpty) depositCurrencies.addAll(toAddDeposit); |
| 1888 | } |
| 1889 | |
| 1890 | bool _listContainsToken(List<CryptoCurrency> list, Erc20Token token) { |
| 1891 | return list.any((item) { |
| 1892 | if (item is Erc20Token) { |
| 1893 | return item.contractAddress.toLowerCase() == token.contractAddress.toLowerCase(); |
| 1894 | } |
| 1895 | return item.title.toUpperCase() == token.symbol.toUpperCase() && |
| 1896 | (item.tag?.toUpperCase() == token.tag?.toUpperCase() || item.tag == null); |
| 1897 | }); |
| 1898 | } |
| 1899 | |
| 1900 | // Adding user's Solana tokens to the list of currencies |
| 1901 | |
| 1902 | bool _listContainsSplToken(List<CryptoCurrency> list, SPLToken token) { |
| 1903 | return list.any((item) { |
| 1904 | if (item is SPLToken) { |
| 1905 | return item.mintAddress.toLowerCase() == token.mintAddress.toLowerCase(); |
| 1906 | } |
| 1907 | return item.title.toUpperCase() == token.symbol.toUpperCase() && |
| 1908 | (item.tag?.toUpperCase() == token.tag?.toUpperCase() || item.tag == null); |
| 1909 | }); |
| 1910 | } |
| 1911 | |
| 1912 | @action |
| 1913 | Future<void> _injectUserSplTokensIntoCurrencyLists() async { |
| 1914 | final tokens = await TokenUtilities.loadSolTokensForSwap(); |
| 1915 | final toAddReceive = <CryptoCurrency>[]; |
| 1916 | final toAddDeposit = <CryptoCurrency>[]; |
| 1917 | |
| 1918 | for (final token in tokens) { |
| 1919 | if (!_listContainsSplToken(receiveCurrencies, token)) toAddReceive.add(token); |
| 1920 | if (!_listContainsSplToken(depositCurrencies, token)) toAddDeposit.add(token); |
| 1921 | } |
| 1922 | |
| 1923 | if (toAddReceive.isNotEmpty) receiveCurrencies.addAll(toAddReceive); |
| 1924 | if (toAddDeposit.isNotEmpty) depositCurrencies.addAll(toAddDeposit); |
| 1925 | } |
| 1926 | |
| 1927 | // Adding user's Tron tokens to the list of currencies |
| 1928 | |
| 1929 | bool _listContainsTronToken(List<CryptoCurrency> list, TronToken token) { |
| 1930 | return list.any((item) { |
| 1931 | if (item is TronToken) { |
| 1932 | return item.contractAddress.toLowerCase() == token.contractAddress.toLowerCase(); |
| 1933 | } |
| 1934 | return item.title.toUpperCase() == token.symbol.toUpperCase() && |
| 1935 | (item.tag?.toUpperCase() == token.tag?.toUpperCase() || item.tag == null); |
| 1936 | }); |
| 1937 | } |
| 1938 | |
| 1939 | @action |
| 1940 | Future<void> _injectUserTronTokensIntoCurrencyLists() async { |
| 1941 | final tokens = await TokenUtilities.loadTronTokensForSwap(); |
| 1942 | final toAddReceive = <CryptoCurrency>[]; |
| 1943 | final toAddDeposit = <CryptoCurrency>[]; |
| 1944 | |
| 1945 | for (final token in tokens) { |
| 1946 | if (!_listContainsTronToken(receiveCurrencies, token)) toAddReceive.add(token); |
| 1947 | if (!_listContainsTronToken(depositCurrencies, token)) toAddDeposit.add(token); |
| 1948 | } |
| 1949 | |
| 1950 | if (toAddReceive.isNotEmpty) receiveCurrencies.addAll(toAddReceive); |
| 1951 | if (toAddDeposit.isNotEmpty) depositCurrencies.addAll(toAddDeposit); |
| 1952 | } |
| 1953 | |
| 1954 | double initialAmountByAssets(CryptoCurrency ticker) { |
| 1955 | final amount = switch (ticker) { |
| 1956 | CryptoCurrency.trx => 1000, |
| 1957 | CryptoCurrency.nano => 10, |
| 1958 | CryptoCurrency.zano => 10, |
| 1959 | CryptoCurrency.wow => 1000, |
| 1960 | CryptoCurrency.ada => 1000, |
| 1961 | CryptoCurrency.dash => 10, |
| 1962 | CryptoCurrency.rune => 10, |
| 1963 | _ => 1 |
| 1964 | }; |
| 1965 | return amount.toDouble(); |
| 1966 | } |
| 1967 | } |