fix sending with mweb amounts

cw_bitcoin/lib/electrum_balance.dart

@@ -7,8 +7,8 @@ class ElectrumBalance extends Balance {
     required this.confirmed,
     required this.unconfirmed,
     required this.frozen,
-    this.secondConfirmed,
+    this.secondConfirmed = 0,
-    this.secondUnconfirmed,
+    this.secondUnconfirmed = 0,
   }) : super(
           confirmed,
           unconfirmed,
@@ -32,8 +32,8 @@ class ElectrumBalance extends Balance {
   int confirmed;
   int unconfirmed;
   final int frozen;
-  int? secondConfirmed;
+  int secondConfirmed = 0;
-  int? secondUnconfirmed;
+  int secondUnconfirmed = 0;
 
   @override
   String get formattedAvailableBalance => bitcoinAmountToString(amount: confirmed - frozen);
@@ -51,7 +51,12 @@ class ElectrumBalance extends Balance {
   String get formattedSecondAvailableBalance => bitcoinAmountToString(amount: secondConfirmed ?? 0);
 
   @override
-  String get formattedSecondAdditionalBalance => bitcoinAmountToString(amount: secondUnconfirmed ?? 0);
+  String get formattedSecondAdditionalBalance =>
+      bitcoinAmountToString(amount: secondUnconfirmed ?? 0);
+
+  @override
+  String get formattedFullAvailableBalance =>
+      bitcoinAmountToString(amount: confirmed + (secondConfirmed ?? 0) - frozen);
 
   String toJSON() => json.encode({
         'confirmed': confirmed,

cw_bitcoin/lib/electrum_wallet.dart

@@ -869,7 +869,7 @@ abstract class ElectrumWalletBase
 
     final totalAmount = amount + fee;
 
-    if (totalAmount > balance[currency]!.confirmed) {
+    if (totalAmount > (balance[currency]!.confirmed + balance[currency]!.secondConfirmed)) {
       throw BitcoinTransactionWrongBalanceException();
     }
 

cw_bitcoin/lib/litecoin_wallet.dart

@@ -676,8 +676,10 @@ abstract class LitecoinWalletBase extends ElectrumWallet with Store {
     try {
       mwebUtxosBox.values.forEach((utxo) {
         if (utxo.height > 0) {
+          // confirmed += utxo.value.toInt();
           confirmedMweb += utxo.value.toInt();
         } else {
+          // unconfirmed += utxo.value.toInt();
           unconfirmedMweb += utxo.value.toInt();
         }
       });

cw_bitcoin/lib/litecoin_wallet_addresses.dart

@@ -122,6 +122,10 @@ abstract class LitecoinWalletAddressesBase extends ElectrumWalletAddresses with
   Future<String> getChangeAddress({List<BitcoinOutput>? outputs, UtxoDetails? utxoDetails}) async {
     // use regular change address on peg in, otherwise use mweb for change address:
 
+    if (!mwebEnabled) {
+      return super.getChangeAddress();
+    }
+
     if (outputs != null && utxoDetails != null) {
       // check if this is a PEGIN:
       bool outputsToMweb = false;
@@ -134,6 +138,7 @@ abstract class LitecoinWalletAddressesBase extends ElectrumWalletAddresses with
           outputsToMweb = true;
         }
       }
+      // TODO: this doesn't respect coin control because it doesn't know which available inputs are selected
       utxoDetails.availableInputs.forEach((element) {
         if (element.address.contains("mweb")) {
           comesFromMweb = true;
@@ -144,6 +149,11 @@ abstract class LitecoinWalletAddressesBase extends ElectrumWalletAddresses with
       if (isPegIn && mwebEnabled) {
         return super.getChangeAddress();
       }
+
+      // use regular change address if it's not an mweb tx:
+      if (!comesFromMweb && !outputsToMweb) {
+        return super.getChangeAddress();
+      }
     }
 
     if (mwebEnabled) {

cw_core/lib/balance.dart

@@ -13,4 +13,6 @@ abstract class Balance {
   String get formattedUnAvailableBalance => '';
   String get formattedSecondAvailableBalance => '';
   String get formattedSecondAdditionalBalance => '';
+  String get formattedFullAvailableBalance => '';
+  String get formattedFullUnAvailableBalance => '';
 }

lib/src/screens/receive/widgets/address_list.dart

@@ -1,3 +1,6 @@
+
+import 'dart:math';
+
 import 'package:cake_wallet/di.dart';
 import 'package:cake_wallet/generated/i18n.dart';
 import 'package:cake_wallet/routes.dart';
@@ -35,7 +38,7 @@ class AddressList extends StatelessWidget {
         separatorBuilder: (context, _) => const HorizontalSectionDivider(),
         shrinkWrap: true,
         physics: NeverScrollableScrollPhysics(),
-        itemCount: addressListViewModel.items.length,
+        itemCount: min(addressListViewModel.items.length, 100),// TODO: don't show all 1000 mweb addresses
         itemBuilder: (context, index) {
           final item = addressListViewModel.items[index];
           Widget cell = Container();

lib/view_model/dashboard/balance_view_model.dart

@@ -369,21 +369,17 @@ abstract class BalanceViewModelBase with Store {
   }
 
   bool _hasSecondAdditionalBalanceForWalletType(WalletType type) {
-    // return _walletBalance.secondAdditional != null && _walletBalance.secondAdditional! != 0;
+    if (wallet.type == WalletType.litecoin /*&& settingsStore.mwebEnabled*/) {
-    // if (wallet.type == WalletType.litecoin && settingsStore.mwebEnabled) {
+      return true;
-    //   return true;
+    }
-    // }
+    return false;
-    // return false;
-    return true;
   }
 
   bool _hasSecondAvailableBalanceForWalletType(WalletType type) {
-    // return _walletBalance.secondAdditional != null && _walletBalance.secondAdditional! != 0;
+    if (wallet.type == WalletType.litecoin /*&& settingsStore.mwebEnabled*/) {
-    // if (wallet.type == WalletType.litecoin && settingsStore.mwebEnabled) {
+      return true;
-    //   return true;
+    }
-    // }
+    return false;
-    // return false;
-    return true;
   }
 
   @computed

lib/view_model/send/send_view_model.dart

@@ -217,7 +217,7 @@ abstract class SendViewModelBase extends WalletChangeListenerViewModel with Stor
   PendingTransaction? pendingTransaction;
 
   @computed
-  String get balance => wallet.balance[selectedCryptoCurrency]!.formattedAvailableBalance;
+  String get balance => wallet.balance[selectedCryptoCurrency]!.formattedFullAvailableBalance;
 
   @computed
   bool get isFiatDisabled => balanceViewModel.isFiatDisabled;