OnBeforeDelete-event.md

The OnBeforeDelete event is fired just before a file is deleted.

Calling FailRequest on the BeforeDeleteContext passed to the callback will reject the request with a 400 Bad Request status code. Calling FailRequest multiple times will concatenate the error messages.

ℹ️ Note that this event only fires for client requests and not when manually calling the store's methods.

app.UseTus(context => new DefaultTusConfiguration
{
    UrlPath = "/files",
    Store = new TusDiskStore(@"C:\tusfiles\"),
    Events = new Events
    {
        OnBeforeDeleteAsync = ctx =>
        {
            if(!SomeBusinessLogic())
            {
                ctx.FailRequest($"Cannot delete {ctx.FileId} due to business logic");
            }
            
            return Task.CompletedTask;
        }
    }
});