Fixed item creation when there is no image attached

Wallet.Data/ItemEntry.cs

@@ -15,6 +15,8 @@ public record ItemEntry
 
     public int State { get; set; } = 0;
 
+    public Guid? ImageId { get; set; }
+
     public BlobEntry? Image { get; set; }
 
     public required string Category { get; set; }

Wallet.Data/LockerContext.cs

@@ -31,11 +31,12 @@ public class WalletContext(DbContextOptions<WalletContext> options) :
             .WithOne()
             .OnDelete(DeleteBehavior.Cascade);
 
-        modelBuilder.Entity<ItemEntry>()
-            .HasOne(x => x.Image)
+        modelBuilder.Entity<ItemEntry>().
+        HasOne(i => i.Image)
             .WithOne()
-            .HasForeignKey<ItemEntry>()
-            .IsRequired(false);
+            .HasForeignKey<ItemEntry>(i => i.ImageId)
+            .IsRequired(false)
+            .OnDelete(DeleteBehavior.Restrict);
 
         modelBuilder.Entity<BlobEntry>()
             .HasKey(x => x.Id);

Wallet/ConfirmCreateItemHandler.cs

@@ -24,7 +24,7 @@ public class ConfirmCreateItemHandler(IMediator mediator,
 
                 await mediator.Handle<CreateEventArgs<(Guid, string, string, IImageDescriptor?,
                     ItemConfiguration)>, bool>(new CreateEventArgs<(Guid, string, string, IImageDescriptor?, 
-                    ItemConfiguration)>((id, name, category, imageDescriptor, itemConfiguration)));
+                    ItemConfiguration)>((id, name, category, imageDescriptor ?? default, itemConfiguration)));
 
                 publisher.Publish(Changed.As<Item>());
             }

Wallet/CreateItemHandler.cs

@@ -14,8 +14,7 @@ public class CreateItemHandler(IImageWriter imageWriter,
     public async Task<bool> Handle(CreateEventArgs<(Guid, string, string, IImageDescriptor?, ItemConfiguration)> args,
         CancellationToken cancellationToken)
     {
-        if (args.Sender is (Guid id, string name, string category, IImageDescriptor imageDescriptor, ItemConfiguration configuration))
-        {
+        (Guid id, string name, string category, IImageDescriptor? imageDescriptor, ItemConfiguration configuration) = args.Sender;
         try
         {
             string content = JsonSerializer.Serialize(configuration);
@@ -23,7 +22,7 @@ public class CreateItemHandler(IImageWriter imageWriter,
 
             if (imageDescriptor is not null)
             {
-                    using MemoryStream memoryStream = new MemoryStream();
+                using MemoryStream memoryStream = new();
                 imageWriter.Write(imageDescriptor, memoryStream);
                 thumbData = memoryStream.ToArray();
             }
@@ -65,7 +64,6 @@ public class CreateItemHandler(IImageWriter imageWriter,
         catch
         {
         }
-        }
 
         return false;
     }