Add sender dependency to UpdateUserCartsCommandHandler and handle empty cart case

src/CMSMicroservice.Application/UserCartsCQ/Commands/UpdateUserCarts/UpdateUserCartsCommandHandler.cs

@@ -1,16 +1,23 @@
+using CMSMicroservice.Application.UserCartsCQ.Commands.DeleteUserCarts;
 using CMSMicroservice.Domain.Events;
 namespace CMSMicroservice.Application.UserCartsCQ.Commands.UpdateUserCarts;
 public class UpdateUserCartsCommandHandler : IRequestHandler<UpdateUserCartsCommand, Unit>
 {
     private readonly IApplicationDbContext _context;
+    private readonly ISender _sender;
 
-    public UpdateUserCartsCommandHandler(IApplicationDbContext context)
+    public UpdateUserCartsCommandHandler(IApplicationDbContext context, ISender sender)
     {
         _context = context;
+        _sender = sender;
     }
 
     public async Task<Unit> Handle(UpdateUserCartsCommand request, CancellationToken cancellationToken)
     {
+        if (request.Count<=0)
+        {
+            await _sender.Send(request.Adapt<DeleteUserCartsCommand>(), cancellationToken);
+        }
         var entity = await _context.UserCartss
             .FirstOrDefaultAsync(x => x.Id == request.Id, cancellationToken) ?? throw new NotFoundException(nameof(UserCarts), request.Id);
         request.Adapt(entity);