| 1 | import 'dart:convert'; |
| 2 | import 'dart:developer'; |
| 3 | |
| 4 | import 'package:cake_wallet/.secrets.g.dart' as secrets; |
| 5 | import 'package:cake_wallet/buy/buy_exception.dart'; |
| 6 | import 'package:cake_wallet/buy/buy_provider.dart'; |
| 7 | import 'package:cake_wallet/buy/buy_provider_description.dart'; |
| 8 | import 'package:cake_wallet/buy/buy_quote.dart'; |
| 9 | import 'package:cake_wallet/order/order.dart'; |
| 10 | import 'package:cake_wallet/order/order_source_description.dart'; |
| 11 | import 'package:cake_wallet/buy/pairs_utils.dart'; |
| 12 | import 'package:cake_wallet/buy/payment_method.dart'; |
| 13 | import 'package:cake_wallet/entities/fiat_currency.dart'; |
| 14 | import 'package:cake_wallet/exchange/trade_state.dart'; |
| 15 | import 'package:cake_wallet/generated/i18n.dart'; |
| 16 | import 'package:cake_wallet/palette.dart'; |
| 17 | import 'package:cake_wallet/src/widgets/alert_with_one_action.dart'; |
| 18 | import 'package:cake_wallet/store/app_store.dart'; |
| 19 | import 'package:cake_wallet/themes/core/material_base_theme.dart'; |
| 20 | import 'package:cw_core/currency_for_wallet_type.dart'; |
| 21 | import 'package:cw_core/utils/proxy_wrapper.dart'; |
| 22 | import 'package:cw_core/crypto_currency.dart'; |
| 23 | import 'package:cw_core/wallet_base.dart'; |
| 24 | import 'package:cw_core/utils/print_verbose.dart'; |
| 25 | import 'package:flutter/material.dart'; |
| 26 | import 'package:url_launcher/url_launcher.dart'; |
| 27 | |
| 28 | class MoonPayProvider extends BuyProvider { |
| 29 | MoonPayProvider({ |
| 30 | required AppStore appStore, |
| 31 | required WalletBase wallet, |
| 32 | bool isTestEnvironment = false, |
| 33 | }) : baseSellUrl = isTestEnvironment ? _baseSellTestUrl : _baseSellProductUrl, |
| 34 | baseBuyUrl = isTestEnvironment ? _baseBuyTestUrl : _baseBuyProductUrl, |
| 35 | this._appStore = appStore, |
| 36 | super( |
| 37 | wallet: wallet, |
| 38 | isTestEnvironment: isTestEnvironment, |
| 39 | hardwareWalletVM: null, |
| 40 | supportedCryptoList: supportedCryptoToFiatPairs( |
| 41 | notSupportedCrypto: _notSupportedCrypto, notSupportedFiat: _notSupportedFiat), |
| 42 | supportedFiatList: supportedFiatToCryptoPairs( |
| 43 | notSupportedFiat: _notSupportedFiat, notSupportedCrypto: _notSupportedCrypto)); |
| 44 | |
| 45 | final AppStore _appStore; |
| 46 | |
| 47 | static const _baseSellTestUrl = 'sell-sandbox.moonpay.com'; |
| 48 | static const _baseSellProductUrl = 'sell.moonpay.com'; |
| 49 | static const _baseBuyTestUrl = 'buy-staging.moonpay.com'; |
| 50 | static const _baseBuyProductUrl = 'buy.moonpay.com'; |
| 51 | static const _cIdBaseUrl = 'exchange-helper.cakewallet.com'; |
| 52 | static const _apiUrl = 'https://api.moonpay.com'; |
| 53 | static const _baseUrl = 'api.moonpay.com'; |
| 54 | static const _currenciesPath = '/v3/currencies'; |
| 55 | static const _buyQuote = '/buy_quote'; |
| 56 | static const _sellQuote = '/sell_quote'; |
| 57 | |
| 58 | static const _transactionsSuffix = '/v1/transactions'; |
| 59 | |
| 60 | static const List<CryptoCurrency> _notSupportedCrypto = []; |
| 61 | static const List<FiatCurrency> _notSupportedFiat = []; |
| 62 | |
| 63 | final String baseBuyUrl; |
| 64 | final String baseSellUrl; |
| 65 | |
| 66 | @override |
| 67 | String get providerDescription => |
| 68 | 'MoonPay offers a fast and simple way to buy and sell cryptocurrencies'; |
| 69 | |
| 70 | @override |
| 71 | String get title => 'MoonPay'; |
| 72 | |
| 73 | @override |
| 74 | String get lightIcon => 'assets/images/moonpay_light.png'; |
| 75 | |
| 76 | @override |
| 77 | String get darkIcon => 'assets/images/moonpay_dark.png'; |
| 78 | |
| 79 | @override |
| 80 | bool get isAggregator => false; |
| 81 | |
| 82 | String get _apiKey => isTestEnvironment ? secrets.moonPaySandboxApiKey : secrets.moonPayApiKey; |
| 83 | |
| 84 | String get currencyCode => |
| 85 | walletTypeToCryptoCurrency(wallet.type, chainId: wallet.chainId).title.toLowerCase(); |
| 86 | |
| 87 | String get trackUrl => baseBuyUrl + '/transaction_receipt?transactionId='; |
| 88 | |
| 89 | static String get _exchangeHelperApiKey => secrets.exchangeHelperApiKey; |
| 90 | |
| 91 | static String themeToMoonPayTheme(MaterialThemeBase theme) { |
| 92 | switch (theme.type) { |
| 93 | case ThemeType.light: |
| 94 | return 'light'; |
| 95 | case ThemeType.dark: |
| 96 | return 'dark'; |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | Future<String> getMoonpaySignedQuery(String query) async { |
| 101 | final uri = |
| 102 | Uri.https(_cIdBaseUrl, "/api/moonpay", isTestEnvironment ? {"useSandbox": "true"} : null); |
| 103 | |
| 104 | final response = await ProxyWrapper().post( |
| 105 | clearnetUri: uri, |
| 106 | headers: {'Content-Type': 'application/json', 'x-api-key': _exchangeHelperApiKey}, |
| 107 | body: json.encode({'query': query}), |
| 108 | ); |
| 109 | |
| 110 | if (response.statusCode == 200) { |
| 111 | printV((jsonDecode(response.body) as Map<String, dynamic>)); |
| 112 | return (jsonDecode(response.body) as Map<String, dynamic>)['query'] as String; |
| 113 | } else { |
| 114 | throw Exception( |
| 115 | 'Provider currently unavailable. Status: ${response.statusCode} ${response.body}'); |
| 116 | } |
| 117 | } |
| 118 | |
| 119 | Future<Map<String, dynamic>> fetchFiatCredentials( |
| 120 | String fiatCurrency, String cryptocurrency, String? paymentMethod) async { |
| 121 | final params = {'baseCurrencyCode': fiatCurrency.toLowerCase(), 'apiKey': _apiKey}; |
| 122 | |
| 123 | if (paymentMethod != null) params['paymentMethod'] = paymentMethod; |
| 124 | |
| 125 | final path = '$_currenciesPath/${cryptocurrency.toLowerCase()}/limits'; |
| 126 | final url = Uri.https(_baseUrl, path, params); |
| 127 | |
| 128 | try { |
| 129 | final response = await ProxyWrapper().get( |
| 130 | clearnetUri: url, |
| 131 | headers: {'accept': 'application/json'}, |
| 132 | ); |
| 133 | |
| 134 | if (response.statusCode == 200) { |
| 135 | return jsonDecode(response.body) as Map<String, dynamic>; |
| 136 | } else { |
| 137 | printV('MoonPay does not support fiat: $fiatCurrency'); |
| 138 | return {}; |
| 139 | } |
| 140 | } catch (e) { |
| 141 | printV('MoonPay Error fetching fiat currencies: $e'); |
| 142 | return {}; |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | Future<List<PaymentMethod>> getAvailablePaymentTypes( |
| 147 | String fiatCurrency, CryptoCurrency cryptoCurrency, bool isBuyAction) async { |
| 148 | final List<PaymentMethod> paymentMethods = []; |
| 149 | |
| 150 | if (isBuyAction) { |
| 151 | final fiatBuyCredentials = |
| 152 | await fetchFiatCredentials(fiatCurrency, cryptoCurrency.title, null); |
| 153 | if (fiatBuyCredentials.isNotEmpty) { |
| 154 | final paymentMethod = fiatBuyCredentials['paymentMethod'] as String?; |
| 155 | paymentMethods.add(PaymentMethod.fromMoonPayJson( |
| 156 | fiatBuyCredentials, _getPaymentTypeByString(paymentMethod))); |
| 157 | return paymentMethods; |
| 158 | } |
| 159 | } |
| 160 | |
| 161 | return paymentMethods; |
| 162 | } |
| 163 | |
| 164 | @override |
| 165 | Future<List<Quote>?> fetchQuote( |
| 166 | {required CryptoCurrency cryptoCurrency, |
| 167 | required FiatCurrency fiatCurrency, |
| 168 | required double amount, |
| 169 | required bool isBuyAction, |
| 170 | required String walletAddress, |
| 171 | PaymentType? paymentType, |
| 172 | String? customPaymentMethodType, |
| 173 | String? countryCode}) async { |
| 174 | String? paymentMethod; |
| 175 | |
| 176 | if (paymentType != null && paymentType != PaymentType.all) { |
| 177 | paymentMethod = normalizePaymentMethod(paymentType); |
| 178 | if (paymentMethod == null) paymentMethod = paymentType.name; |
| 179 | } else { |
| 180 | paymentMethod = 'credit_debit_card'; |
| 181 | } |
| 182 | |
| 183 | final action = isBuyAction ? 'buy' : 'sell'; |
| 184 | |
| 185 | final formattedCryptoCurrency = _normalizeCurrency(cryptoCurrency); |
| 186 | final baseCurrencyCode = |
| 187 | isBuyAction ? fiatCurrency.name.toLowerCase() : cryptoCurrency.title.toLowerCase(); |
| 188 | |
| 189 | final params = { |
| 190 | 'baseCurrencyCode': baseCurrencyCode, |
| 191 | 'baseCurrencyAmount': amount.toStringAsFixed(2), |
| 192 | 'paymentMethod': paymentMethod, |
| 193 | 'areFeesIncluded': 'false', |
| 194 | 'apiKey': _apiKey |
| 195 | }; |
| 196 | |
| 197 | log('MoonPay: Fetching $action quote: ${isBuyAction ? formattedCryptoCurrency : fiatCurrency.name.toLowerCase()} -> ${isBuyAction ? baseCurrencyCode : formattedCryptoCurrency}, amount: $amount, paymentMethod: $paymentMethod'); |
| 198 | |
| 199 | final quotePath = isBuyAction ? _buyQuote : _sellQuote; |
| 200 | |
| 201 | final path = '$_currenciesPath/$formattedCryptoCurrency$quotePath'; |
| 202 | final url = Uri.https(_baseUrl, path, params); |
| 203 | try { |
| 204 | final response = await ProxyWrapper().get(clearnetUri: url); |
| 205 | |
| 206 | if (response.statusCode == 200) { |
| 207 | final data = jsonDecode(response.body) as Map<String, dynamic>; |
| 208 | |
| 209 | // Check if the response is for the correct fiat currency |
| 210 | if (isBuyAction) { |
| 211 | final fiatCurrencyCode = data['baseCurrencyCode'] as String?; |
| 212 | if (fiatCurrencyCode == null || fiatCurrencyCode != fiatCurrency.name.toLowerCase()) |
| 213 | return null; |
| 214 | } else { |
| 215 | final quoteCurrency = data['quoteCurrency'] as Map<String, dynamic>?; |
| 216 | if (quoteCurrency == null || quoteCurrency['code'] != fiatCurrency.name.toLowerCase()) |
| 217 | return null; |
| 218 | } |
| 219 | |
| 220 | final paymentMethods = data['paymentMethod'] as String?; |
| 221 | final quote = |
| 222 | Quote.fromMoonPayJson(data, isBuyAction, _getPaymentTypeByString(paymentMethods)); |
| 223 | |
| 224 | quote.setFiatCurrency = fiatCurrency; |
| 225 | quote.setCryptoCurrency = cryptoCurrency; |
| 226 | |
| 227 | return [quote]; |
| 228 | } else { |
| 229 | printV('Moon Pay: Error fetching buy quote: '); |
| 230 | return null; |
| 231 | } |
| 232 | } catch (e) { |
| 233 | printV('Moon Pay: Error fetching buy quote: $e'); |
| 234 | return null; |
| 235 | } |
| 236 | } |
| 237 | |
| 238 | @override |
| 239 | Future<void>? launchProvider( |
| 240 | {required BuildContext context, |
| 241 | required Quote quote, |
| 242 | required double amount, |
| 243 | required bool isBuyAction, |
| 244 | required String cryptoCurrencyAddress, |
| 245 | String? countryCode}) async { |
| 246 | final Map<String, String> params = { |
| 247 | 'theme': themeToMoonPayTheme(_appStore.themeStore.currentTheme), |
| 248 | 'language': _appStore.settingsStore.languageCode, |
| 249 | 'colorCode': _appStore.themeStore.currentTheme.isDark |
| 250 | ? '#${Palette.blueCraiola.value.toRadixString(16).substring(2, 8)}' |
| 251 | : '#${Palette.moderateSlateBlue.value.toRadixString(16).substring(2, 8)}', |
| 252 | 'baseCurrencyCode': isBuyAction ? quote.fiatCurrency.name : quote.cryptoCurrency.name, |
| 253 | 'baseCurrencyAmount': amount.toStringAsFixed(2), |
| 254 | 'walletAddress': cryptoCurrencyAddress, |
| 255 | 'lockAmount': 'false', |
| 256 | 'showAllCurrencies': 'false', |
| 257 | 'showWalletAddressForm': 'false', |
| 258 | if (isBuyAction) |
| 259 | 'enabledPaymentMethods': normalizePaymentMethod(quote.paymentType) ?? |
| 260 | 'credit_debit_card,apple_pay,google_pay,samsung_pay,sepa_bank_transfer,gbp_bank_transfer,gbp_open_banking_payment', |
| 261 | if (!isBuyAction) 'refundWalletAddress': cryptoCurrencyAddress |
| 262 | }; |
| 263 | |
| 264 | if (isBuyAction) params['currencyCode'] = quote.cryptoCurrency.name; |
| 265 | if (!isBuyAction) params['quoteCurrencyCode'] = quote.cryptoCurrency.name; |
| 266 | |
| 267 | try { |
| 268 | final uri = await requestMoonPayUrl( |
| 269 | walletAddress: cryptoCurrencyAddress, |
| 270 | isBuyAction: isBuyAction, |
| 271 | amount: amount.toString(), |
| 272 | params: params); |
| 273 | |
| 274 | if (await canLaunchUrl(uri)) { |
| 275 | await launchUrl(uri, mode: LaunchMode.externalApplication); |
| 276 | } else { |
| 277 | throw Exception('Could not launch URL'); |
| 278 | } |
| 279 | } catch (e) { |
| 280 | if (context.mounted) { |
| 281 | await showDialog<void>( |
| 282 | context: context, |
| 283 | builder: (BuildContext context) { |
| 284 | return AlertWithOneAction( |
| 285 | alertTitle: 'MoonPay', |
| 286 | alertContent: 'The MoonPay service is currently unavailable: $e', |
| 287 | buttonText: S.of(context).ok, |
| 288 | buttonAction: () => Navigator.of(context).pop(), |
| 289 | ); |
| 290 | }, |
| 291 | ); |
| 292 | } |
| 293 | } |
| 294 | } |
| 295 | |
| 296 | Future<Uri> requestMoonPayUrl({ |
| 297 | required String walletAddress, |
| 298 | required bool isBuyAction, |
| 299 | required Map<String, String> params, |
| 300 | String? amount, |
| 301 | }) async { |
| 302 | if (_apiKey.isNotEmpty) params["apiKey"] = _apiKey; |
| 303 | |
| 304 | final baseUrl = isBuyAction ? baseBuyUrl : baseSellUrl; |
| 305 | final originalUri = Uri.https(baseUrl, "", params); |
| 306 | |
| 307 | final query = await getMoonpaySignedQuery("?${originalUri.query}"); |
| 308 | return Uri.parse(query); |
| 309 | } |
| 310 | |
| 311 | Future<Order> findOrderById(String id) async { |
| 312 | final url = _apiUrl + _transactionsSuffix + '/$id' + '?apiKey=' + _apiKey; |
| 313 | final uri = Uri.parse(url); |
| 314 | final response = await ProxyWrapper().get(clearnetUri: uri); |
| 315 | |
| 316 | if (response.statusCode != 200) { |
| 317 | throw BuyException(title: providerDescription, content: 'Transaction $id is not found!'); |
| 318 | } |
| 319 | |
| 320 | final responseJSON = json.decode(response.body) as Map<String, dynamic>; |
| 321 | final status = responseJSON['status'] as String; |
| 322 | final state = TradeState.deserialize(raw: status); |
| 323 | final createdAtRaw = responseJSON['createdAt'] as String; |
| 324 | final createdAt = DateTime.parse(createdAtRaw).toLocal(); |
| 325 | final amount = responseJSON['quoteCurrencyAmount'] as double; |
| 326 | |
| 327 | return Order( |
| 328 | id: id, |
| 329 | source: OrderSourceDescription.buy, |
| 330 | buyProvider: BuyProviderDescription.moonPay, |
| 331 | transferId: id, |
| 332 | state: state, |
| 333 | createdAt: createdAt, |
| 334 | amount: amount.toString(), |
| 335 | receiveAddress: wallet.walletAddresses.address, |
| 336 | walletId: wallet.id); |
| 337 | } |
| 338 | |
| 339 | String _normalizeCurrency(CryptoCurrency currency) { |
| 340 | if (currency.tag == 'POLY') { |
| 341 | return '${currency.title.toLowerCase()}_polygon'; |
| 342 | } |
| 343 | |
| 344 | if (currency.tag == 'TRX') { |
| 345 | return '${currency.title.toLowerCase()}_trx'; |
| 346 | } |
| 347 | |
| 348 | return currency.toString().toLowerCase(); |
| 349 | } |
| 350 | |
| 351 | String? normalizePaymentMethod(PaymentType paymentMethod) { |
| 352 | switch (paymentMethod) { |
| 353 | case PaymentType.creditCard: |
| 354 | return 'credit_debit_card'; |
| 355 | case PaymentType.debitCard: |
| 356 | return 'credit_debit_card'; |
| 357 | case PaymentType.ach: |
| 358 | return 'ach_bank_transfer'; |
| 359 | case PaymentType.applePay: |
| 360 | return 'apple_pay'; |
| 361 | case PaymentType.googlePay: |
| 362 | return 'google_pay'; |
| 363 | case PaymentType.sepa: |
| 364 | return 'sepa_bank_transfer'; |
| 365 | case PaymentType.paypal: |
| 366 | return 'paypal'; |
| 367 | case PaymentType.sepaOpenBankingPayment: |
| 368 | return 'sepa_open_banking_payment'; |
| 369 | case PaymentType.gbpOpenBankingPayment: |
| 370 | return 'gbp_open_banking_payment'; |
| 371 | case PaymentType.lowCostAch: |
| 372 | return 'low_cost_ach'; |
| 373 | case PaymentType.mobileWallet: |
| 374 | return 'mobile_wallet'; |
| 375 | case PaymentType.pixInstantPayment: |
| 376 | return 'pix_instant_payment'; |
| 377 | case PaymentType.yellowCardBankTransfer: |
| 378 | return 'yellow_card_bank_transfer'; |
| 379 | case PaymentType.fiatBalance: |
| 380 | return 'fiat_balance'; |
| 381 | case PaymentType.revolutPay: |
| 382 | return 'revolut_pay'; |
| 383 | default: |
| 384 | return null; |
| 385 | } |
| 386 | } |
| 387 | |
| 388 | PaymentType _getPaymentTypeByString(String? paymentMethod) { |
| 389 | switch (paymentMethod) { |
| 390 | case 'ach_bank_transfer': |
| 391 | return PaymentType.ach; |
| 392 | case 'apple_pay': |
| 393 | return PaymentType.applePay; |
| 394 | case 'credit_debit_card': |
| 395 | return PaymentType.creditCard; |
| 396 | case 'fiat_balance': |
| 397 | return PaymentType.fiatBalance; |
| 398 | case 'gbp_open_banking_payment': |
| 399 | return PaymentType.gbpOpenBankingPayment; |
| 400 | case 'google_pay': |
| 401 | return PaymentType.googlePay; |
| 402 | case 'low_cost_ach': |
| 403 | return PaymentType.lowCostAch; |
| 404 | case 'mobile_wallet': |
| 405 | return PaymentType.mobileWallet; |
| 406 | case 'paypal': |
| 407 | return PaymentType.paypal; |
| 408 | case 'pix_instant_payment': |
| 409 | return PaymentType.pixInstantPayment; |
| 410 | case 'sepa_bank_transfer': |
| 411 | return PaymentType.sepa; |
| 412 | case 'sepa_open_banking_payment': |
| 413 | return PaymentType.sepaOpenBankingPayment; |
| 414 | case 'yellow_card_bank_transfer': |
| 415 | return PaymentType.yellowCardBankTransfer; |
| 416 | case 'revolut_pay': |
| 417 | return PaymentType.revolutPay; |
| 418 | default: |
| 419 | return PaymentType.unknown; |
| 420 | } |
| 421 | } |
| 422 | } |