fix: Login/Password of Node dialog can't be made empty after setting a value

lib/models/node_model.dart

@@ -65,12 +65,12 @@ class NodeModel {
     int? port,
     String? name,
     bool? useSSL,
-    String? loginName,
+    required String? loginName,
     bool? enabled,
     String? coinName,
     bool? isFailover,
     bool? isDown,
-    bool? trusted,
+    required bool? trusted,
     bool? torEnabled,
     bool? clearnetEnabled,
   }) {
@@ -80,12 +80,12 @@ class NodeModel {
       name: name ?? this.name,
       id: id,
       useSSL: useSSL ?? this.useSSL,
-      loginName: loginName ?? this.loginName,
+      loginName: loginName,
       enabled: enabled ?? this.enabled,
       coinName: coinName ?? this.coinName,
       isFailover: isFailover ?? this.isFailover,
       isDown: isDown ?? this.isDown,
-      trusted: trusted ?? this.trusted,
+      trusted: trusted,
       torEnabled: torEnabled ?? this.torEnabled,
       clearnetEnabled: clearnetEnabled ?? this.clearnetEnabled,
     );

lib/pages/settings_views/global_settings_view/manage_nodes_views/add_edit_node_view.dart

@@ -860,13 +860,10 @@ class _NodeFormState extends ConsumerState<NodeForm> {
     onChanged?.call(canSave, canTestConnection);
     ref.read(nodeFormDataProvider).name = _nameController.text;
     ref.read(nodeFormDataProvider).host = _hostController.text;
-
     ref.read(nodeFormDataProvider).login =
         _usernameController.text.isEmpty ? null : _usernameController.text;
-
     ref.read(nodeFormDataProvider).password =
         _passwordController.text.isEmpty ? null : _passwordController.text;
-
     ref.read(nodeFormDataProvider).port = port;
     ref.read(nodeFormDataProvider).useSSL = _useSSL;
     ref.read(nodeFormDataProvider).isFailover = _isFailover;
@@ -1331,7 +1328,11 @@ class _NodeFormState extends ConsumerState<NodeForm> {
                   });
                   if (widget.readOnly) {
                     ref.read(nodeServiceChangeNotifierProvider).edit(
-                          widget.node!.copyWith(isFailover: _isFailover),
+                          widget.node!.copyWith(
+                            isFailover: _isFailover,
+                            loginName: widget.node!.loginName,
+                            trusted: widget.node!.trusted,
+                          ),
                           null,
                           true,
                         );
@@ -1356,8 +1357,11 @@ class _NodeFormState extends ConsumerState<NodeForm> {
                             });
                             if (widget.readOnly) {
                               ref.read(nodeServiceChangeNotifierProvider).edit(
-                                    widget.node!
-                                        .copyWith(isFailover: _isFailover),
+                                    widget.node!.copyWith(
+                                      isFailover: _isFailover,
+                                      loginName: widget.node!.loginName,
+                                      trusted: widget.node!.trusted,
+                                    ),
                                     null,
                                     true,
                                   );

lib/pages/settings_views/global_settings_view/stack_backup_views/helpers/restore_create_backup.dart

@@ -1071,6 +1071,7 @@ abstract class SWB {
               loginName: nodeData['loginName'] as String?,
               isFailover: nodeData['isFailover'] as bool,
               isDown: nodeData['isDown'] as bool,
+              trusted: nodeData['trusted'] as bool?,
             ),
             nodeData['password'] as String?,
             true,

lib/services/node_service.dart

@@ -104,6 +104,7 @@ class NodeService extends ChangeNotifier {
             trusted: savedNode.trusted,
             torEnabled: savedNode.torEnabled,
             clearnetEnabled: savedNode.clearnetEnabled,
+            loginName: savedNode.loginName,
           ),
         );
       }
@@ -122,6 +123,7 @@ class NodeService extends ChangeNotifier {
             trusted: primaryNode.trusted,
             torEnabled: primaryNode.torEnabled,
             clearnetEnabled: primaryNode.clearnetEnabled,
+            loginName: primaryNode.loginName,
           ),
         );
       }
@@ -213,6 +215,8 @@ class NodeService extends ChangeNotifier {
         key: "${node.id}_nodePW",
         value: password,
       );
+    } else {
+      await secureStorageInterface.delete(key: "${node.id}_nodePW");
     }
     if (shouldNotifyListeners) {
       notifyListeners();
@@ -240,7 +244,11 @@ class NodeService extends ChangeNotifier {
     await DB.instance.put<NodeModel>(
       boxName: DB.boxNameNodeModels,
       key: model.id,
-      value: model.copyWith(enabled: enabled),
+      value: model.copyWith(
+        enabled: enabled,
+        loginName: model.loginName,
+        trusted: model.trusted,
+      ),
     );
     if (shouldNotifyListeners) {
       notifyListeners();
@@ -314,6 +322,8 @@ class NodeService extends ChangeNotifier {
               useSSL: node.useSSL,
               coinName: node.coinName,
               isDown: node.isDown,
+              loginName: node.loginName,
+              trusted: node.trusted,
             );
           }
           await add(node, null, false);