Add WAL file for database and log instance deployment failures

OTSSignsOrchestrator.Desktop/ViewModels/HostsViewModel.cs

@@ -4,6 +4,7 @@ using CommunityToolkit.Mvvm.Input;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.DependencyInjection;
 using OTSSignsOrchestrator.Core.Data;
+using OTSSignsOrchestrator.Core.Models.DTOs;
 using OTSSignsOrchestrator.Core.Models.Entities;
 using OTSSignsOrchestrator.Desktop.Services;
 
@@ -22,6 +23,8 @@ public partial class HostsViewModel : ObservableObject
     [ObservableProperty] private bool _isEditing;
     [ObservableProperty] private string _statusMessage = string.Empty;
     [ObservableProperty] private bool _isBusy;
+    [ObservableProperty] private ObservableCollection<NodeInfo> _remoteNodes = new();
+    [ObservableProperty] private string _nodesStatusMessage = string.Empty;
 
     // Edit form fields
     [ObservableProperty] private string _editLabel = string.Empty;
@@ -202,6 +205,36 @@ public partial class HostsViewModel : ObservableObject
         }
     }
 
+    [RelayCommand]
+    private async Task ListNodesAsync()
+    {
+        if (SelectedHost == null)
+        {
+            NodesStatusMessage = "Select a host first.";
+            return;
+        }
+
+        IsBusy = true;
+        NodesStatusMessage = $"Listing nodes on {SelectedHost.Label}...";
+        try
+        {
+            var dockerCli = _services.GetRequiredService<SshDockerCliService>();
+            dockerCli.SetHost(SelectedHost);
+            var nodes = await dockerCli.ListNodesAsync();
+            RemoteNodes = new ObservableCollection<NodeInfo>(nodes);
+            NodesStatusMessage = $"Found {nodes.Count} node(s) on {SelectedHost.Label}.";
+        }
+        catch (Exception ex)
+        {
+            RemoteNodes.Clear();
+            NodesStatusMessage = $"Error: {ex.Message}";
+        }
+        finally
+        {
+            IsBusy = false;
+        }
+    }
+
     [RelayCommand]
     private async Task TestConnectionAsync()
     {