Merge pull request #235 from cake-tech/CW-4-update-open-alias-resolver

update logic for Crypto address resolving

lib/entities/openalias_record.dart

@@ -1,11 +1,17 @@
 import 'package:basic_utils/basic_utils.dart';
+import 'package:cw_core/wallet_type.dart';
+import 'package:flutter/material.dart';
 
 class OpenaliasRecord {
-
-  OpenaliasRecord({this.address, this.name});
+  OpenaliasRecord({
+    this.address,
+    this.name,
+    this.description,
+  });
 
   final String name;
   final String address;
+  final String description;
 
   static String formatDomainName(String name) {
     String formattedName = name;
@@ -17,35 +23,60 @@ class OpenaliasRecord {
     return formattedName;
   }
 
-  static Future<OpenaliasRecord> fetchAddressAndName(String formattedName) async {
+  static Future<OpenaliasRecord> fetchAddressAndName({
+    @required String formattedName,
+    @required String ticker,
+  }) async {
     String address = formattedName;
     String name = formattedName;
+    String note = '';
 
     if (formattedName.contains(".")) {
       try {
-        final txtRecord = await DnsUtils.lookupRecord(formattedName, RRecordType.TXT, dnssec: true);
+        final txtRecord = await DnsUtils.lookupRecord(
+            formattedName, RRecordType.TXT,
+            dnssec: true);
 
         if (txtRecord != null) {
-
           for (RRecord element in txtRecord) {
             String record = element.data;
 
-            if (record.contains("oa1:xmr") && record.contains("recipient_address")) {
+            if (record.contains("oa1:$ticker") &&
+                record.contains("recipient_address")) {
               record = record.replaceAll('\"', "");
 
               final dataList = record.split(";");
 
-              address = dataList.where((item) => (item.contains("recipient_address")))
-                  .toString().replaceAll("oa1:xmr recipient_address=", "")
-                  .replaceAll("(", "").replaceAll(")", "").trim();
+              address = dataList
+                  .where((item) => (item.contains("recipient_address")))
+                  .toString()
+                  .replaceAll("oa1:$ticker recipient_address=", "")
+                  .replaceAll("(", "")
+                  .replaceAll(")", "")
+                  .trim();
 
-              final recipientName = dataList.where((item) => (item.contains("recipient_name"))).toString()
-                  .replaceAll("(", "").replaceAll(")", "").trim();
+              final recipientName = dataList
+                  .where((item) => (item.contains("recipient_name")))
+                  .toString()
+                  .replaceAll("(", "")
+                  .replaceAll(")", "")
+                  .trim();
 
               if (recipientName.isNotEmpty) {
                 name = recipientName.replaceAll("recipient_name=", "");
               }
 
+              final description = dataList
+                  .where((item) => (item.contains("tx_description")))
+                  .toString()
+                  .replaceAll("(", "")
+                  .replaceAll(")", "")
+                  .trim();
+
+              if (description.isNotEmpty) {
+                note = description.replaceAll("tx_description=", "");
+              }
+
               break;
             }
           }
@@ -55,8 +86,6 @@ class OpenaliasRecord {
       }
     }
 
-    return OpenaliasRecord(address: address, name: name);
+    return OpenaliasRecord(address: address, name: name, description: note);
   }
-
 }
-

lib/entities/parse_address_from_domain.dart

@@ -2,18 +2,20 @@ import 'package:cake_wallet/entities/openalias_record.dart';
 import 'package:cake_wallet/entities/parsed_address.dart';
 import 'package:cake_wallet/entities/unstoppable_domain_address.dart';
 import 'package:cake_wallet/store/yat/yat_store.dart';
+import 'package:cw_core/wallet_type.dart';
 
 const unstoppableDomains = [
-   'crypto',
-   'zil',
-   'x',
-   'coin',
-   'wallet',
-   'bitcoin',
-   '888',
-   'nft',
-   'dao',
-   'blockchain'];
+  'crypto',
+  'zil',
+  'x',
+  'coin',
+  'wallet',
+  'bitcoin',
+  '888',
+  'nft',
+  'dao',
+  'blockchain'
+];
 
 Future<ParsedAddress> parseAddressFromDomain(
     String domain, String ticker) async {
@@ -28,22 +30,18 @@ Future<ParsedAddress> parseAddressFromDomain(
 
         if (addresses?.isEmpty ?? true) {
           return ParsedAddress(
-              addresses: [domain],
-              parseFrom: ParseFrom.yatRecord);
+              addresses: [domain], parseFrom: ParseFrom.yatRecord);
         }
 
         return ParsedAddress(
-            addresses: addresses,
-            name: domain,
-            parseFrom: ParseFrom.yatRecord);
+            addresses: addresses, name: domain, parseFrom: ParseFrom.yatRecord);
       } catch (e) {
         return ParsedAddress(addresses: [domain]);
       }
     }
 
     if (unstoppableDomains.any((domain) => name.contains(domain))) {
-      final address =
-        await fetchUnstoppableDomainAddress(domain, ticker);
+      final address = await fetchUnstoppableDomainAddress(domain, ticker);
 
       if (address?.isEmpty ?? true) {
         return ParsedAddress(addresses: [domain]);
@@ -55,7 +53,8 @@ Future<ParsedAddress> parseAddressFromDomain(
           parseFrom: ParseFrom.unstoppableDomains);
     }
 
-    final record = await OpenaliasRecord.fetchAddressAndName(formattedName);
+    final record = await OpenaliasRecord.fetchAddressAndName(
+        formattedName: formattedName, ticker: ticker);
 
     if (record == null || record.address.contains(formattedName)) {
       return ParsedAddress(addresses: [domain]);
@@ -64,6 +63,7 @@ Future<ParsedAddress> parseAddressFromDomain(
     return ParsedAddress(
         addresses: [record.address],
         name: record.name,
+        description: record.description,
         parseFrom: ParseFrom.openAlias);
   } catch (e) {
     print(e.toString());

lib/entities/parsed_address.dart

@@ -1,12 +1,15 @@
-enum ParseFrom {unstoppableDomains, openAlias, yatRecord, notParsed}
+enum ParseFrom { unstoppableDomains, openAlias, yatRecord, notParsed }
 
 class ParsedAddress {
   ParsedAddress({
     this.addresses,
     this.name = '',
-    this.parseFrom = ParseFrom.notParsed});
+    this.description = '',
+    this.parseFrom = ParseFrom.notParsed,
+  });
 
   final List<String> addresses;
   final String name;
+  final String description;
   final ParseFrom parseFrom;
 }

lib/view_model/send/output.dart

@@ -22,7 +22,7 @@ class Output = OutputBase with _$Output;
 
 abstract class OutputBase with Store {
   OutputBase(this._wallet, this._settingsStore, this._fiatConversationStore)
-      :_cryptoNumberFormat = NumberFormat(cryptoNumberPattern) {
+      : _cryptoNumberFormat = NumberFormat(cryptoNumberPattern) {
     reset();
     _setCryptoNumMaximumFractionDigits();
     key = UniqueKey();
@@ -52,8 +52,9 @@ abstract class OutputBase with Store {
   String extractedAddress;
 
   @computed
-  bool get isParsedAddress => parsedAddress.parseFrom != ParseFrom.notParsed
-      && parsedAddress.name.isNotEmpty;
+  bool get isParsedAddress =>
+      parsedAddress.parseFrom != ParseFrom.notParsed &&
+      parsedAddress.name.isNotEmpty;
 
   @computed
   int get formattedCryptoAmount {
@@ -68,10 +69,12 @@ abstract class OutputBase with Store {
             _amount = monero.formatterMoneroParseAmount(amount: _cryptoAmount);
             break;
           case WalletType.bitcoin:
-            _amount = bitcoin.formatterStringDoubleToBitcoinAmount(_cryptoAmount);
+            _amount =
+                bitcoin.formatterStringDoubleToBitcoinAmount(_cryptoAmount);
             break;
           case WalletType.litecoin:
-            _amount = bitcoin.formatterStringDoubleToBitcoinAmount(_cryptoAmount);
+            _amount =
+                bitcoin.formatterStringDoubleToBitcoinAmount(_cryptoAmount);
             break;
           default:
             break;
@@ -81,7 +84,7 @@ abstract class OutputBase with Store {
           amount = _amount;
         }
       }
-    } catch(e) {
+    } catch (e) {
       amount = 0;
     }
 
@@ -94,8 +97,8 @@ abstract class OutputBase with Store {
       final fee = _wallet.calculateEstimatedFee(
           _settingsStore.priority[_wallet.type], formattedCryptoAmount);
 
-      if (_wallet.type == WalletType.bitcoin
-          || _wallet.type == WalletType.litecoin) {
+      if (_wallet.type == WalletType.bitcoin ||
+          _wallet.type == WalletType.litecoin) {
         return bitcoin.formatterBitcoinAmountToDouble(amount: fee);
       }
 
@@ -215,5 +218,6 @@ abstract class OutputBase with Store {
     final ticker = _wallet.currency.title.toLowerCase();
     parsedAddress = await parseAddressFromDomain(domain, ticker);
     extractedAddress = await extractAddressFromParsed(context, parsedAddress);
+    note = parsedAddress.description;
   }
 }