add synchronous address validate call

Author: julian-CStack

lib/wallets/crypto_currency/coins/epiccash.dart

@@ -65,12 +65,7 @@ class Epiccash extends Bip39Currency {
       }
     }
 
-    if (address.contains("@")) {
-      return true; // Epicbox address format
-    }
-
-    // Very very basic (bad) check
-    return address.isNotEmpty && address.length > 10;
+    return libEpic.validateSendAddressSync(address: address);
   }
 
   @override
@@ -143,7 +138,8 @@ class Epiccash extends Bip39Currency {
       // Check for common slate fields.
       return parsed is Map &&
           (parsed.containsKey('id') || parsed.containsKey('slate_id')) &&
-          (parsed.containsKey('amount') || parsed.containsKey('participant_data'));
+          (parsed.containsKey('amount') ||
+              parsed.containsKey('participant_data'));
     } catch (e) {
       return false;
     }
@@ -163,7 +159,8 @@ class Epiccash extends Bip39Currency {
   EpicTransactionMethod getTransactionMethod(String addressOrData) {
     if (isSlateJson(addressOrData)) {
       return EpicTransactionMethod.slatepack;
-    } else if (isEpicboxAddress(addressOrData) || isHttpAddress(addressOrData)) {
+    } else if (isEpicboxAddress(addressOrData) ||
+        isHttpAddress(addressOrData)) {
       return EpicTransactionMethod.epicbox;
     } else {
       throw Exception("Unknown EpicTransactionMethod found!");

lib/wl_gen/interfaces/libepiccash_interface.dart

@@ -81,6 +81,8 @@ abstract class LibEpicCashInterface {
 
   Future<bool> validateSendAddress({required String address});
 
+  bool validateSendAddressSync({required String address});
+
   Future<({int fee, bool strategyUseAll, int total})> getTransactionFees({
     required DynamicObject wallet,
     required int amount,

tool/wl_templates/EPIC_libepiccash_interface_impl.template.dart

@@ -1,4 +1,5 @@
 //ON
+import 'package:flutter_libepiccash/epic_cash.dart' as epc;
 import 'package:flutter_libepiccash/git_versions.dart' as epic_versions;
 import 'package:flutter_libepiccash/lib.dart';
 import 'package:flutter_libepiccash/models/transaction.dart';
@@ -300,6 +301,11 @@ final class _LibEpicCashInterfaceImpl extends LibEpicCashInterface {
     return EpicWallet.validateSendAddress(address: address);
   }
 
+  @override
+  bool validateSendAddressSync({required String address}) {
+    return epc.validateSendAddress(address) == "1"; //lol
+  }
+
   @override
   Future<void> close({required DynamicObject wallet}) {
     return wallet.get<EpicWallet>().close();