How to create a command handler in DSharpPlus?

Question

I'm coming from Nextcord where we have cogs, but here I'm confused. What if I want one command per class? Do I have to register them all manually?

Here's what I'm doing now: I have a Bot class that has:

var slash = discord.UseSlashCommands(); slash.RegisterCommands<DiscordCommand>();

Then in my DiscordCommand class I have a few Tasks with \[SlashCommand\] attributes.

Ideally I would want to make a new class for every command, and have that class inherit from a BaseCommand class that auto registers itself somehow. Is there a way to do that?

Thanks in advance.

Answer 1

There is a relatively easy way of doing this so that you don't need 100 lines of slash.RegisterCommand<t>() in your code. In this example we will assume you have the word "Command" in all class names that contain a command, and that all of your commands are in the namespace Project.Commands.

Instead of doing this:

var slash = discord.UseSlashCommands();
slash.RegisterCommands<FirstCommand>();
slash.RegisterCommands<SecondCommand>();
slash.RegisterCommands<ThirdCommand>();

We are going to loop through all the classes of the namespace Project.Commands and register these through the loop.

var slash = discord.UseSlashCommands();

var types = Assembly
    .GetExecutingAssembly()
    .GetTypes()
    .Where(t => t.Namespace.StartsWith("Project.Commands")) //Limit our namespace to Project.Commands
    .Where(s => s.Name.Contains("Command")); //Limit the types to those named with the word Command

foreach (var t in types)
{
    slash.RegisterCommands(t);
}