Rebase node-sqlite-migration onto dev

Squashed migration of node Hive→SQLite, default-node handling,
isPow/proxy support, arbitrum node updates, and related fixes.
Replays node-sqlite-migration on top of current dev without the
amount-refactor merge that the original branch carried.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

lib/view_model/node_list/node_create_or_edit_view_model.dart

@@ -5,10 +5,11 @@ import 'package:cake_wallet/store/settings_store.dart';
 import 'package:cake_wallet/utils/permission_handler.dart';
 import 'package:collection/collection.dart';
 import 'package:cw_core/node.dart';
+import 'package:cake_wallet/view_model/node_list/node_list_view_model.dart';
+import 'package:cake_wallet/view_model/node_list/pow_node_list_view_model.dart';
 import 'package:cw_core/utils/proxy_wrapper.dart';
 import 'package:cw_core/wallet_type.dart';
 import 'package:flutter/cupertino.dart';
-import 'package:hive/hive.dart';
 import 'package:mobx/mobx.dart';
 import 'package:permission_handler/permission_handler.dart';
 
@@ -19,7 +20,7 @@ class NodeCreateOrEditViewModel = NodeCreateOrEditViewModelBase
 
 abstract class NodeCreateOrEditViewModelBase with Store {
   NodeCreateOrEditViewModelBase(
-      this._nodeSource, this.walletType, this.editingNode, this._settingsStore)
+      this.isPow, this.nodeListViewModel,this.powNodeListViewModel, this.walletType, this._settingsStore, {this.editingNode})
       : state = InitialExecutionState(),
         connectionState = InitialExecutionState(),
         label = editingNode?.label ?? '',
@@ -36,8 +37,7 @@ abstract class NodeCreateOrEditViewModelBase with Store {
             editingNode?.isEnabledForAutoSwitching ?? false,
         useSocksProxy = editingNode?.socksProxyAddress != null &&
             editingNode!.socksProxyAddress!.isNotEmpty,
-        useSSL = editingNode?.useSSL ?? false {
-  }
+        useSSL = editingNode?.useSSL ?? false {}
 
   final nodeLabelUIKey = 'node_label_row_key';
   final nodeAddressUIKey = 'node_address_row_key';
@@ -110,6 +110,15 @@ abstract class NodeCreateOrEditViewModelBase with Store {
   @observable
   String socksProxyAddress;
 
+  @observable
+  Node? editingNode;
+
+  @observable
+  bool isPow;
+
+  final NodeListViewModel? nodeListViewModel;
+  final PowNodeListViewModel? powNodeListViewModel;
+
   @computed
   bool get isReady =>
       (address.isNotEmpty) ||
@@ -158,8 +167,6 @@ abstract class NodeCreateOrEditViewModelBase with Store {
   }
 
   final WalletType walletType;
-  final Node? editingNode;
-  final Box<Node> _nodeSource;
   final SettingsStore _settingsStore;
 
   void updateViewModelFromText(String key, String value) {
@@ -248,33 +255,45 @@ abstract class NodeCreateOrEditViewModelBase with Store {
   void setSocksProxyAddress(String val) => socksProxyAddress = val;
 
   @action
-  Future<void> save({Node? editingNode, bool saveAsCurrent = false}) async {
-    final node = Node(
-        label: label,
-        uri: uri,
-        path: path,
-        type: walletType,
-        login: login,
-        password: password,
-        useSSL: useSSL,
-        trusted: trusted,
-        isEnabledForAutoSwitching: isEnabledForAutoSwitching,
-        socksProxyAddress: socksProxyAddress);
+  Future<void> delete({required Node editingNode}) async {
+    await editingNode.delete();
+    if(nodeListViewModel != null) {
+      nodeListViewModel!.bindNodes();
+    }
+    if(powNodeListViewModel != null) {
+      powNodeListViewModel!.bindNodes();
+    }
+  }
+
+  @action
+  Future<void> save({bool saveAsCurrent = false}) async {
+    editingNode ??= Node();
+    editingNode!.type = walletType;
+    editingNode!.label = label;
+    editingNode!.uriRaw = uri;
+    editingNode!.path = path;
+    editingNode!.login = login;
+    editingNode!.password = password;
+    editingNode!.isPow = isPow;
+    editingNode!.useSSL = useSSL;
+    editingNode!.trusted = trusted;
+    editingNode!.socksProxyAddress = socksProxyAddress;
+
     try {
       state = IsExecutingState();
-      if (editingNode != null) {
-        await _nodeSource.put(editingNode.key, node);
-      } else if (_existingNode(node) != null) {
-        setAsCurrent(_existingNode(node)!);
-      } else {
-        await _nodeSource.add(node);
-        setAsCurrent(_nodeSource.values.last);
-      }
+      await editingNode!.save();
       if (saveAsCurrent) {
-        setAsCurrent(node);
+        setAsCurrent(editingNode!);
       }
 
       state = ExecutedSuccessfullyState();
+      if(nodeListViewModel != null) {
+        nodeListViewModel!.bindNodes();
+      }
+      if(powNodeListViewModel != null) {
+        powNodeListViewModel!.bindNodes();
+      }
+
     } catch (e) {
       state = FailureState(e.toString());
     }
@@ -301,15 +320,6 @@ abstract class NodeCreateOrEditViewModelBase with Store {
     }
   }
 
-  Node? _existingNode(Node node) {
-    final nodes = _nodeSource.values.toList();
-    nodes.forEach((item) {
-      item.login ??= '';
-      item.password ??= '';
-      item.useSSL ??= false;
-    });
-    return nodes.firstWhereOrNull((item) => item == node);
-  }
 
   @action
   void setAsCurrent(Node node) => _settingsStore.nodes[walletType] = node;

lib/view_model/node_list/node_list_view_model.dart

@@ -1,8 +1,7 @@
 import 'package:cake_wallet/generated/i18n.dart';
 import 'package:cake_wallet/store/app_store.dart';
-import 'package:cake_wallet/utils/mobx.dart';
+import 'package:cw_core/node_list.dart';
 import 'package:cw_core/utils/proxy_wrapper.dart';
-import 'package:hive/hive.dart';
 import 'package:mobx/mobx.dart';
 import 'package:cw_core/wallet_base.dart';
 import 'package:cake_wallet/store/settings_store.dart';
@@ -18,13 +17,13 @@ part 'node_list_view_model.g.dart';
 class NodeListViewModel = NodeListViewModelBase with _$NodeListViewModel;
 
 abstract class NodeListViewModelBase with Store {
-  NodeListViewModelBase(this._nodeSource, this._appStore)
+  NodeListViewModelBase(this._appStore)
       : nodes = ObservableList<Node>(),
         settingsStore = _appStore.settingsStore {
-    _bindNodes();
+    bindNodes();
 
     reaction((_) => _appStore.wallet, (WalletBase? _wallet) {
-      _bindNodes();
+      bindNodes();
     });
 
     reaction((_) {
@@ -35,7 +34,7 @@ abstract class NodeListViewModelBase with Store {
       }
       return null;
     }, (_) {
-      _bindNodes();
+      bindNodes();
     });
   }
 
@@ -73,24 +72,24 @@ abstract class NodeListViewModelBase with Store {
 
   final ObservableList<Node> nodes;
   final SettingsStore settingsStore;
-  final Box<Node> _nodeSource;
   final AppStore _appStore;
 
   Future<void> reset() async {
-    await resetToDefault(_nodeSource);
+    await resetToDefault();
 
     final wallet = _appStore.wallet!;
     final walletType = wallet.type;
 
     Node node;
     if (walletType == WalletType.bitcoin && wallet.isTestnet) {
-      node = getBitcoinTestnetDefaultElectrumServer(nodes: _nodeSource)!;
+      node = (await getBitcoinTestnetDefaultElectrumServer())!;
+
     } else if (isEVMCompatibleChain(walletType)) {
       final chainId = evm!.getSelectedChainId(wallet);
       if (chainId != null) {
         final nodeWalletType = evm!.getWalletTypeByChainId(chainId);
         if (nodeWalletType != null) {
-          node = getDefaultNode(nodes: _nodeSource, type: nodeWalletType)!;
+          node = (await Node.getDefaultForWalletType(nodeWalletType))!;
         } else {
           throw Exception(
               'Cannot reset node for EVM wallet: wallet type not found for chainId: $chainId');
@@ -99,7 +98,7 @@ abstract class NodeListViewModelBase with Store {
         throw Exception('Cannot reset node for EVM wallet: chainId is null');
       }
     } else {
-      node = getDefaultNode(nodes: _nodeSource, type: walletType)!;
+      node = (await Node.getDefaultForWalletType(_appStore.wallet!.type))!;
     }
 
     await setAsCurrent(node);
@@ -130,7 +129,7 @@ abstract class NodeListViewModelBase with Store {
   }
 
   @action
-  void _bindNodes() {
+  Future<void> bindNodes() async {
     nodes.clear();
     final wallet = _appStore.wallet!;
     final walletType = wallet.type;
@@ -141,11 +140,8 @@ abstract class NodeListViewModelBase with Store {
       if (chainId != null) {
         final nodeWalletType = evm!.getWalletTypeByChainId(chainId);
         if (nodeWalletType != null) {
-          _nodeSource.bindToList(
-            nodes,
-            filter: (val) => val.type == nodeWalletType,
-            initialFire: true,
-          );
+          nodes.addAll(await Node.getAllForWalletType(nodeWalletType));
+
           return;
         }
       }
@@ -154,10 +150,7 @@ abstract class NodeListViewModelBase with Store {
     }
 
     // For non-EVM wallets, use the wallet type directly
-    _nodeSource.bindToList(
-      nodes,
-      filter: (val) => val.type == walletType,
-      initialFire: true,
-    );
+    nodes.addAll(await Node.getAllForWalletType(walletType));
+
   }
 }

lib/view_model/node_list/pow_node_list_view_model.dart

@@ -1,6 +1,7 @@
 import 'package:cake_wallet/generated/i18n.dart';
 import 'package:cake_wallet/store/app_store.dart';
 import 'package:cake_wallet/utils/mobx.dart';
+import 'package:cw_core/node_list.dart';
 import 'package:cw_core/utils/proxy_wrapper.dart';
 import 'package:hive/hive.dart';
 import 'package:mobx/mobx.dart';
@@ -16,13 +17,13 @@ part 'pow_node_list_view_model.g.dart';
 class PowNodeListViewModel = PowNodeListViewModelBase with _$PowNodeListViewModel;
 
 abstract class PowNodeListViewModelBase with Store {
-  PowNodeListViewModelBase(this._nodeSource, this._appStore)
+  PowNodeListViewModelBase(this._appStore)
       : nodes = ObservableList<Node>(),
         settingsStore = _appStore.settingsStore {
-    _bindNodes();
+    bindNodes();
 
     reaction((_) => _appStore.wallet, (WalletBase? _wallet) {
-      _bindNodes();
+      bindNodes();
     });
   }
 
@@ -50,17 +51,16 @@ abstract class PowNodeListViewModelBase with Store {
 
   final ObservableList<Node> nodes;
   final SettingsStore settingsStore;
-  final Box<Node> _nodeSource;
   final AppStore _appStore;
 
   Future<void> reset() async {
-    await resetPowToDefault(_nodeSource);
+    await resetPowToDefault();
 
     Node node;
 
     switch (_appStore.wallet!.type) {
       case WalletType.nano:
-        node = getNanoDefaultPowNode(nodes: _nodeSource)!;
+        node = (await getNanoDefaultPowNode())!;
         break;
       default:
         throw Exception('Unexpected wallet type: ${_appStore.wallet!.type} for pow node list');
@@ -76,12 +76,8 @@ abstract class PowNodeListViewModelBase with Store {
       settingsStore.powNodes[_appStore.wallet!.type] = node;
 
   @action
-  void _bindNodes() {
+  Future<void> bindNodes() async  {
     nodes.clear();
-    _nodeSource.bindToList(
-      nodes,
-      filter: (val) => val.type == _appStore.wallet!.type,
-      initialFire: true,
-    );
+    nodes.addAll(await Node.getAllPow());
   }
 }