Soft deleting whiteboards

dotnet/AipsCore/Application/Models/Whiteboard/Command/DeleteWhiteboard/DeleteWhiteboardCommand.cs

@@ -0,0 +1,5 @@
+using AipsCore.Application.Abstract.Command;
+
+namespace AipsCore.Application.Models.Whiteboard.Command.DeleteWhiteboard;
+
+public record DeleteWhiteboardCommand(string WhiteboardId) : ICommand;

dotnet/AipsCore/Application/Models/Whiteboard/Command/DeleteWhiteboard/DeleteWhiteboardCommandHandler.cs

@@ -0,0 +1,48 @@
+using AipsCore.Application.Abstract.Command;
+using AipsCore.Application.Abstract.UserContext;
+using AipsCore.Domain.Abstract;
+using AipsCore.Domain.Abstract.Validation;
+using AipsCore.Domain.Common.Validation;
+using AipsCore.Domain.Models.Whiteboard.External;
+using AipsCore.Domain.Models.Whiteboard.Validation;
+using AipsCore.Domain.Models.Whiteboard.ValueObjects;
+
+namespace AipsCore.Application.Models.Whiteboard.Command.DeleteWhiteboard;
+
+public class DeleteWhiteboardCommandHandler : ICommandHandler<DeleteWhiteboardCommand>
+{
+    private readonly IUserContext _userContext;
+    private readonly IWhiteboardRepository _whiteboardRepository;
+    private readonly IUnitOfWork _unitOfWork;
+
+    public DeleteWhiteboardCommandHandler(
+        IUserContext userContext, 
+        IWhiteboardRepository whiteboardRepository, 
+        IUnitOfWork unitOfWork)
+    {
+        _userContext = userContext;
+        _whiteboardRepository = whiteboardRepository;
+        _unitOfWork = unitOfWork;
+    }
+
+    public async Task Handle(DeleteWhiteboardCommand command, CancellationToken cancellationToken = default)
+    {
+        var whiteboardId = new WhiteboardId(command.WhiteboardId);
+        var userId = _userContext.GetCurrentUserId();
+
+        var whiteboard = await _whiteboardRepository.GetByIdAsync(whiteboardId, cancellationToken);
+
+        if (whiteboard is null)
+        {
+            throw new ValidationException(WhiteboardErrors.NotFound(whiteboardId));
+        }
+
+        if (!whiteboard.IsOwnedBy(userId))
+        {
+            throw new ValidationException(WhiteboardErrors.OnlyOwnerCanDeleteWhiteboard(userId));
+        }
+        
+        await _whiteboardRepository.SoftDeleteAsync(whiteboardId, cancellationToken);
+        await _unitOfWork.SaveChangesAsync(cancellationToken);
+    }
+}