From dcd978eb38f370fce975d23517d73aa4728df0f3 Mon Sep 17 00:00:00 2001
From: Serhii <borodenko.sv@gmail.com>
Date: Tue, 4 Mar 2025 03:58:56 +0200
Subject: [PATCH] 
 CW-924-Don't-prompt-to-save-to-address-book-on-standard-Bitcoin-Litecoin-Bitcoin-Cash-addresses
 (#2043)

* don't prompt regular btc ltc bch address

* minor fix
---
 lib/core/address_validator.dart     |  3 +++
 lib/src/screens/send/send_page.dart | 36 +++++++++++++++++++++++++++++
 2 files changed, 39 insertions(+)

diff --git a/lib/core/address_validator.dart b/lib/core/address_validator.dart
index 65c9faff9..888be1768 100644
--- a/lib/core/address_validator.dart
+++ b/lib/core/address_validator.dart
@@ -281,6 +281,9 @@ class AddressValidator extends TextValidator {
     }
   }
 
+  static String get silentPaymentAddressPattern => SilentPaymentAddress.regex.pattern;
+  static String get mWebAddressPattern => MwebAddress.regex.pattern;
+
   static String? getAddressFromStringPattern(CryptoCurrency type) {
     String? pattern = null;
 
diff --git a/lib/src/screens/send/send_page.dart b/lib/src/screens/send/send_page.dart
index 6e9178cda..d3c741c0c 100644
--- a/lib/src/screens/send/send_page.dart
+++ b/lib/src/screens/send/send_page.dart
@@ -1,4 +1,5 @@
 import 'package:cake_wallet/bitcoin/bitcoin.dart';
+import 'package:cake_wallet/core/address_validator.dart';
 import 'package:cake_wallet/core/auth_service.dart';
 import 'package:cake_wallet/entities/contact_record.dart';
 import 'package:cake_wallet/core/execution_state.dart';
@@ -544,6 +545,10 @@ class SendPage extends BasePage {
           );
 
           newContactAddress = newContactAddress ?? sendViewModel.newContactAddress();
+          if (newContactAddress?.address != null && isRegularElectrumAddress(newContactAddress!.address)) {
+            newContactAddress = null;
+          }
+
           if (sendViewModel.coinTypeToSpendFrom != UnspentCoinType.any) newContactAddress = null;
 
           if (newContactAddress != null && sendViewModel.showAddressBookPopup) {
@@ -664,4 +669,35 @@ class SendPage extends BasePage {
             ),
         context: context);
   }
+
+  bool isRegularElectrumAddress(String address) {
+    final supportedTypes = [CryptoCurrency.btc, CryptoCurrency.ltc, CryptoCurrency.bch];
+    final excludedPatterns = [
+      RegExp(AddressValidator.silentPaymentAddressPattern),
+      RegExp(AddressValidator.mWebAddressPattern)
+    ];
+
+    final trimmed = address.trim();
+
+    bool isValid = false;
+    for (var type in supportedTypes) {
+      final addressPattern = AddressValidator.getAddressFromStringPattern(type);
+      if (addressPattern != null) {
+        final regex = RegExp('^$addressPattern\$');
+        if (regex.hasMatch(trimmed)) {
+          isValid = true;
+          break;
+        }
+      }
+    }
+
+    for (var pattern in excludedPatterns) {
+      if (pattern.hasMatch(trimmed)) {
+        return false;
+      }
+    }
+
+    return isValid;
+  }
+
 }