| 1 | import 'package:cake_wallet/core/address_resolver/unstoppable/unstoppable_address_provider.dart'; |
| 2 | import 'package:cake_wallet/core/address_validator.dart'; |
| 3 | import 'package:cw_core/crypto_currency.dart'; |
| 4 | import 'package:cw_core/utils/print_verbose.dart'; |
| 5 | |
| 6 | class AddressResolverUtils { |
| 7 | static Future<Map<CryptoCurrency, String>> resolveUnstoppableDomainFromText({ |
| 8 | required String raw, |
| 9 | required List<CryptoCurrency> currencies, |
| 10 | }) async { |
| 11 | final domain = extractUnstoppableDomain(raw); |
| 12 | if (domain.isEmpty) return {}; |
| 13 | |
| 14 | final result = <CryptoCurrency, String>{}; |
| 15 | |
| 16 | for (final currency in currencies) { |
| 17 | final address = |
| 18 | await UnstoppableAddressProvider.fetchUnstoppableDomainAddress(domain, currency.title); |
| 19 | if (address.isNotEmpty) { |
| 20 | result[currency] = address; |
| 21 | } |
| 22 | } |
| 23 | |
| 24 | return result; |
| 25 | } |
| 26 | |
| 27 | static String extractUnstoppableDomain(String raw) { |
| 28 | // sort by length to avoid matching shorter tld instead of longer |
| 29 | final domains = List<String>.from(UnstoppableAddressProvider.unstoppableDomains) |
| 30 | ..sort((a, b) => b.length.compareTo(a.length)); |
| 31 | for (final tld in domains) { |
| 32 | final pattern = RegExp(r'([A-Za-z0-9-]+)\.' + RegExp.escape(tld), caseSensitive: false); |
| 33 | final match = pattern.firstMatch(raw); |
| 34 | if (match != null) return match.group(0)!; |
| 35 | } |
| 36 | return ''; |
| 37 | } |
| 38 | |
| 39 | static Map<CryptoCurrency, String> extractAddressesFromText({ |
| 40 | required String raw, |
| 41 | required List<CryptoCurrency> currencies, |
| 42 | bool requireSurroundingWhitespaces = true, |
| 43 | }) { |
| 44 | final result = <CryptoCurrency, String>{}; |
| 45 | var text = raw; |
| 46 | |
| 47 | for (final currency in currencies) { |
| 48 | final address = extractAddressByType( |
| 49 | raw: text, |
| 50 | type: currency, |
| 51 | requireSurroundingWhitespaces: requireSurroundingWhitespaces, |
| 52 | ); |
| 53 | |
| 54 | if (address != null && address.isNotEmpty) { |
| 55 | result[currency] = address; |
| 56 | text = text.replaceFirst(address, ''); |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | return result; |
| 61 | } |
| 62 | |
| 63 | static String? extractAddressByType({ |
| 64 | required String raw, |
| 65 | required CryptoCurrency type, |
| 66 | bool requireSurroundingWhitespaces = true, |
| 67 | }) { |
| 68 | var addressPattern = AddressValidator.getAddressFromStringPattern(type); |
| 69 | if (addressPattern == null) { |
| 70 | printV('Unknown pattern for $type'); |
| 71 | return null; |
| 72 | } |
| 73 | if (requireSurroundingWhitespaces) addressPattern = "$BEFORE_REGEX$addressPattern$AFTER_REGEX"; |
| 74 | final text = stripHtmlTags(raw); |
| 75 | final match = RegExp(addressPattern, multiLine: true, caseSensitive: false).firstMatch(text); |
| 76 | if (match == null) return null; |
| 77 | return match.group(0)?.replaceAllMapped(RegExp('[^0-9a-zA-Z]|bitcoincash:|nano_|ban_'), |
| 78 | (Match match) { |
| 79 | String group = match.group(0)!; |
| 80 | if (group.startsWith('bitcoincash:') || |
| 81 | group.startsWith('nano_') || |
| 82 | group.startsWith('ban_')) { |
| 83 | return group; |
| 84 | } |
| 85 | return ''; |
| 86 | }); |
| 87 | } |
| 88 | |
| 89 | static bool isEmailFormat(String address) { |
| 90 | final RegExp emailRegex = RegExp( |
| 91 | r'^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$', |
| 92 | caseSensitive: false, |
| 93 | ); |
| 94 | return emailRegex.hasMatch(address); |
| 95 | } |
| 96 | |
| 97 | static String stripHtmlTags(String value) { |
| 98 | return value |
| 99 | .replaceAll(RegExp(r'[\u2028\u2029]'), '\n') |
| 100 | .replaceAll(RegExp(r'<br\s*/?>', caseSensitive: false), '\n') |
| 101 | .replaceAll(RegExp(r'</p\s*>', caseSensitive: false), '\n') |
| 102 | .replaceAll(RegExp(r'<[^>]*>'), ' ') |
| 103 | .trim(); |
| 104 | } |
| 105 | } |