Responding to Commands

Hello World! Coming through loud and clear!

Now that you've registered a command, lets respond to it! For the /hello command, we want our bot to respond with a random fun message:

• Hello, World!

• Helloooo! I can hear you!

• Who's there?

• Beep, boop, I'm a bot.

• I'm alive!

Let's start by putting all those messages in an array in our Bot struct:

@main
public struct Bot {
    private static let HELLO_MESSAGES = [
        "Hello, World!",
        "Helloooo! I can hear you!",
        "Who's there?",
        "Beep, boop, I'm a bot.",
        "I'm alive!"
    ]
    ...

We can use the built-in .randomElement() method on our array to get a random hello message. As we're sure our array isn't empty, we can safely force-unwrap the result with !. Putting all that together in our interaction's handler function gives us:

NewAppCommand("hello", description: "Get a nice hello message") { interaction in
    print("Received hello interaction!")
    // Reply with a random hello message
    try? await interaction.reply(HELLO_MESSAGES.randomElement()!)
}

Run your bot and invoke the /hello command. Your bot should respond with a random message each time, as shown below! Congrats on your first functional slash command!

Hello World!

You'll have to respond to an interaction within 3 seconds, if not the Discord client will display an error stating that "The interaction did not respond".

If you need more than 3s to respond to an interaction (e.g. a 🐌 database), you'll need to send a deferred response first (guide coming soon) to extend the deadline to 15 minutes. This will show the user a loading state which will be replaced by a response once you send one.

GitHub - SwiftcordApp/DiscordKitGettingStarted at responding-to-commandsGitHub

Something not working as expected? Check out this branch!