CommandError for Copy

src/Core/FileTime.Core.Abstraction/Command/CommandError.cs

@@ -0,0 +1,3 @@
+namespace FileTime.Core.Command;
+
+public record CommandError(string Message, Exception? Exception);

src/Core/FileTime.Core.Abstraction/Command/ICommand.cs

@@ -1,3 +1,4 @@
+using System.Collections.ObjectModel;
 using DeclarativeProperty;
 using FileTime.Core.Timeline;
 
@@ -9,6 +10,7 @@ public interface ICommand
     IDeclarativeProperty<string> DisplayDetailLabel { get; }
     IDeclarativeProperty<int> TotalProgress { get; }
     IDeclarativeProperty<int> CurrentProgress { get; }
+    IDeclarativeProperty<ObservableCollection<CommandError>> Errors { get; }
 
     Task<CanCommandRun> CanRun(PointInTime currentTime);
     Task<PointInTime> SimulateCommand(PointInTime currentTime);

src/Core/FileTime.Core.Command/CommandBase.cs

@@ -1,3 +1,4 @@
+using System.Collections.ObjectModel;
 using DeclarativeProperty;
 using FileTime.Core.Timeline;
 
@@ -9,11 +10,14 @@ public abstract class CommandBase : ICommand
     private readonly DeclarativeProperty<string> _displayDetailLabel;
     private readonly DeclarativeProperty<int> _totalProgress;
     private readonly DeclarativeProperty<int> _currentProgress;
+    private readonly DeclarativeProperty<ObservableCollection<CommandError>> _errorsProperty;
+    private readonly ObservableCollection<CommandError> _errors = [];
 
     public IDeclarativeProperty<string> DisplayLabel { get; }
     public IDeclarativeProperty<string> DisplayDetailLabel { get; }
     public IDeclarativeProperty<int> TotalProgress { get; }
     public IDeclarativeProperty<int> CurrentProgress { get; }
+    public IDeclarativeProperty<ObservableCollection<CommandError>> Errors { get; }
 
     protected CommandBase(string displayLabel = "", string displayDetailLabel = "", int totalProgress = 0, int currentProgress = 0)
     {
@@ -21,11 +25,13 @@ public abstract class CommandBase : ICommand
         _displayDetailLabel = new(displayDetailLabel);
         _totalProgress = new(totalProgress);
         _currentProgress = new(currentProgress);
+        _errorsProperty = new(_errors);
 
         DisplayLabel = _displayLabel;
         DisplayDetailLabel = _displayDetailLabel;
         TotalProgress = _totalProgress;
         CurrentProgress = _currentProgress;
+        Errors = _errorsProperty;
     }
 
     public abstract Task<CanCommandRun> CanRun(PointInTime currentTime);
@@ -50,4 +56,6 @@ public abstract class CommandBase : ICommand
                 return Task.FromResult((int)(dataList.Sum(d => d.Progress) * 100 / total));
             })
             .Subscribe(async (p, _) => await SetTotalProgress(p));
+
+    protected void AddError(CommandError error) => _errors.Add(error);
 }

src/Core/FileTime.Core.Command/Copy/CopyCommand.cs

@@ -52,7 +52,7 @@ public class CopyCommand : CommandBase, ITransportationCommand
                 return p?.Progress.Map(currentProgress =>
                     p.TotalCount == 0
                         ? 0
-                        : (int) (currentProgress * 100 / p.TotalCount)
+                        : (int)(currentProgress * 100 / p.TotalCount)
                 );
             })
             .Switch()
@@ -174,7 +174,7 @@ public class CopyCommand : CommandBase, ITransportationCommand
         {
             if (_cancellationTokenSource.IsCancellationRequested) return;
 
-            var resolvedTarget = (IContainer) await target.ResolveAsync() ?? throw new Exception();
+            var resolvedTarget = (IContainer)await target.ResolveAsync() ?? throw new Exception();
             var item = await _timelessContentProvider.GetItemByFullNameAsync(source, currentTime);
 
             if (item is IContainer container)
@@ -183,7 +183,7 @@ public class CopyCommand : CommandBase, ITransportationCommand
                 {
                     await container.WaitForLoaded(_cancellationTokenSource.Token);
                 }
-                catch(OperationCanceledException)
+                catch (OperationCanceledException)
                 {
                     return;
                 }
@@ -208,8 +208,16 @@ public class CopyCommand : CommandBase, ITransportationCommand
                 var currentProgress = _operationProgresses.Find(o => o.Key == element.FullName!.Path);
                 await _currentOperationProgress.SetValue(currentProgress);
 
+                try
+                {
                     await copyOperation.CopyAsync(new AbsolutePath(_timelessContentProvider, element), newElementPath, new CopyCommandContext(UpdateProgress, currentProgress, _cancellationTokenSource.Token));
                 }
+                catch (Exception e)
+                {
+                    _logger.LogError("Error while copying file: {Path}, {Message}", element.FullName!.Path, e.Message);
+                    AddError(new CommandError("Error while copying file: " + element.FullName!.Path, e));
+                }
+            }
         }
     }