derivation fixes

cw_bitcoin/lib/bitcoin_derivations.dart

@@ -1,12 +1,20 @@
 import 'package:cw_core/wallet_info.dart';
 
 Map<DerivationType, List<DerivationInfo>> bitcoin_derivations = {
-  DerivationType.bip39: [
+  DerivationType.electrum2: [
     DerivationInfo(
       derivationType: DerivationType.bip39,
       derivationPath: "m/0'/1",
-      description: "cake default?",
-      script_type: "p2wpkh",// TODO: not really sure what cake uses by default
+      description: "Electrum 2",
+      script_type: "p2wpkh",
+    ),
+  ],
+  DerivationType.bip39: [
+    DerivationInfo(
+      derivationType: DerivationType.bip39,
+      derivationPath: "m/44'/0'/0'/0/0",
+      description: "Standard BIP44",
+      script_type: "p2pkh",
     ),
     DerivationInfo(
       derivationType: DerivationType.bip39,
@@ -20,6 +28,12 @@ Map<DerivationType, List<DerivationInfo>> bitcoin_derivations = {
       description: "Standard BIP49 compatibility segwit",
       script_type: "p2wpkh-p2sh",
     ),
+    DerivationInfo(
+      derivationType: DerivationType.bip39,
+      derivationPath: "m/84'/0'/0'/0/0",
+      description: "Standard BIP84",
+      script_type: "p2wpkh",
+    ),
     DerivationInfo(
       derivationType: DerivationType.bip39,
       derivationPath: "m/84'/0'/0'",
@@ -87,5 +101,4 @@ Map<DerivationType, List<DerivationInfo>> bitcoin_derivations = {
       script_type: "p2wpkh",
     ),
   ],
-
 };

cw_bitcoin/lib/bitcoin_wallet_service.dart

@@ -1,4 +1,5 @@
 import 'dart:io';
+import 'dart:typed_data';
 import 'package:cw_bitcoin/address_to_output_script.dart';
 import 'package:cw_bitcoin/bitcoin_mnemonic.dart';
 import 'package:cw_bitcoin/bitcoin_mnemonic_is_incorrect_exception.dart';
@@ -20,6 +21,8 @@ import 'package:collection/collection.dart';
 import 'package:mobx/mobx.dart';
 import 'package:bitcoin_flutter/bitcoin_flutter.dart' as bitcoin;
 import 'package:cw_bitcoin/bitcoin_derivations.dart';
+import 'package:bip32/bip32.dart' as bip32;
+import 'package:bip39/bip39.dart' as bip39;
 
 class BitcoinWalletService extends WalletService<BitcoinNewWalletCredentials,
     BitcoinRestoreWalletFromSeedCredentials, BitcoinRestoreWalletFromWIFCredentials> {
@@ -96,7 +99,6 @@ class BitcoinWalletService extends WalletService<BitcoinNewWalletCredentials,
 
   @override
   Future<BitcoinWallet> restoreFromSeed(BitcoinRestoreWalletFromSeedCredentials credentials) async {
-
     final wallet = await BitcoinWalletBase.create(
         password: credentials.password!,
         mnemonic: credentials.mnemonic,
@@ -110,7 +112,6 @@ class BitcoinWalletService extends WalletService<BitcoinNewWalletCredentials,
 
   static Future<List<DerivationType>> compareDerivationMethods(
       {required String mnemonic, required Node node}) async {
-
     if (await checkIfMnemonicIsElectrum2(mnemonic)) {
       return [DerivationType.electrum2];
     }
@@ -126,54 +127,60 @@ class BitcoinWalletService extends WalletService<BitcoinNewWalletCredentials,
     await electrumClient.connectToUri(node.uri);
 
     for (DerivationType dType in bitcoin_derivations.keys) {
-      if (dType == DerivationType.bip39) {
-        for (DerivationInfo dInfo in bitcoin_derivations[dType]!) {
-          try {
-            var wallet = bitcoin.HDWallet.fromSeed(await mnemonicToSeedBytes(mnemonic),
-                    network: bitcoin.bitcoin)
-                .derivePath(dInfo.derivationPath!);
+      late Uint8List seedBytes;
+      if (dType == DerivationType.electrum2) {
+        seedBytes = await mnemonicToSeedBytes(mnemonic);
+      } else if (dType == DerivationType.bip39) {
+        seedBytes = bip39.mnemonicToSeed(mnemonic);
+      }
 
-            String? address;
-            switch (dInfo.script_type) {
-              case "p2wpkh":
-                address = bitcoin
-                    .P2WPKH(
-                        data: generatePaymentData(hd: wallet, index: 0), network: bitcoin.bitcoin)
-                    .data
-                    .address;
-                break;
-              case "p2pkh":
-                address = bitcoin
-                    .P2PKH(
-                        data: generatePaymentData(hd: wallet, index: 0), network: bitcoin.bitcoin)
-                    .data
-                    .address;
-                break;
-              case "p2wpkh-p2sh":
-              default:
-                address = wallet.address;
-                break;
-            }
+      for (DerivationInfo dInfo in bitcoin_derivations[dType]!) {
+        try {
+          var node = bip32.BIP32.fromSeed(seedBytes);
+          node = node.derivePath(dInfo.derivationPath!);
 
-            // print(
-            //     "${dInfo.derivationType.toString()} : ${dInfo.derivationPath} : ${dInfo.script_type} : ${address}");
-
-            final sh = scriptHash(address!, networkType: bitcoin.bitcoin);
-            final history = await electrumClient.getHistory(sh);
-
-            final balance = await electrumClient.getBalance(sh);
-            dInfo.balance = balance.entries.first.value.toString();
-            dInfo.address = address;
-            dInfo.height = history.length;
-
-            list.add(dInfo);
-          } catch (e) {
-            print(e);
+          String? address;
+          switch (dInfo.script_type) {
+            case "p2wpkh":
+              address = bitcoin
+                  .P2WPKH(
+                    data: new bitcoin.PaymentData(pubkey: node.publicKey),
+                    network: bitcoin.bitcoin,
+                  )
+                  .data
+                  .address;
+              break;
+            case "p2pkh":
+            // case "p2wpkh-p2sh":// TODO
+            default:
+              address = bitcoin
+                  .P2PKH(
+                    data: new bitcoin.PaymentData(pubkey: node.publicKey),
+                    network: bitcoin.bitcoin,
+                  )
+                  .data
+                  .address;
+              break;
           }
+
+          final sh = scriptHash(address!, networkType: bitcoin.bitcoin);
+          final history = await electrumClient.getHistory(sh);
+
+          final balance = await electrumClient.getBalance(sh);
+          dInfo.balance = balance.entries.first.value.toString();
+          dInfo.address = address;
+          dInfo.height = history.length;
+
+          list.add(dInfo);
+        } catch (e) {
+          print(e);
         }
       }
     }
 
+    // sort the list such that derivations with the most transactions are first:
+    list.sort((a, b) => b.height.compareTo(a.height));
+
     return list;
   }
 

lib/src/screens/restore/wallet_restore_choose_derivation.dart

@@ -62,7 +62,7 @@ class WalletRestoreChooseDerivationPage extends BasePage {
                       contentPadding: EdgeInsets.all(16),
                       title: Center(
                         child: Text(
-                          "${derivation.derivationType.toString().split('.').last}",
+                          "${derivation.description ?? derivation.derivationType.toString().split('.').last}",
                           style: Theme.of(context).primaryTextTheme.labelMedium!.copyWith(
                                 fontSize: 18,
                                 fontWeight: FontWeight.w800,

lib/view_model/wallet_restore_choose_derivation_view_model.dart

@@ -26,6 +26,4 @@ abstract class WalletRestoreChooseDerivationViewModelBase with Store {
 
   @observable
   WalletRestoreMode mode;
-
-
 }