How to handle autocompletion?

[zodiia]

When creating a slash command, there is an option to enable auto completion on a parameter (the autocomplete field in @Param). However, there is no mention in the docs about how to actually implement this auto completion.

Is there any way to implement it using this library, or do I have to manually handle interactionCreate events?

Thank you!

[fjodor-rybakov]

Yes, you can https://github.com/fjodor-rybakov/discord-nestjs/blob/master/packages/core/src/decorators/option/param/string-param-options.ts

[zodiia]

This doesn't help at all...

How am I supposed to create the handler that will receive these auto completion requests? The documentation doesn't say a word about this.

[fjodor-rybakov]

This doesn't help at all...

How am I supposed to create the handler that will receive these auto completion requests? The documentation doesn't say a word about this.

Read discord.js documentation, please

[zodiia]

You don't understand. Please don't be like that, I read discord.js documentation many times, that's very much not the first time I create a discord bot.

However, the thing I was wondering was, since this project let us handle many things with custom handlers, decorators, ..., I was hoping there was something to handle autocompletion, since there is the @Handler for the actual interaction.

If there isn't, I would have to handle it using a listener and check for the right command. That would be a very nice feature to have a @Autocomplete or something like that, that you use in the same command class.

[fjodor-rybakov]

You don't understand. Please don't be like that, I read discord.js documentation many times, that's very much not the first time I create a discord bot.

However, the thing I was wondering was, since this project let us handle many things with custom handlers, decorators, ..., I was hoping there was something to handle autocompletion, since there is the @Handler for the actual interaction.

If there isn't, I would have to handle it using a listener and check for the right command. That would be a very nice feature to have a @Autocomplete or something like that, that you use in the same command class.

I'm sorry, but i don't undersand what is @Autocomplete decorator. There are many ways to handle autocomplete. If your logic is repeated, then you can put it in an interceptor

[zodiia]

Here is an example:

A basic command with an argument can be implemented as such:

class TestCommandInteractionDto {
  @Param({ description: 'Some argument', required: true, autocomplete: true })
  arg: string
}

@Command({
  name: 'test',
  description: 'Do things',
})
export class TestCommand {
  @Handler()
  async onCommand(interaction: CommandInteraction, @IA(SlashCommandPipe) dto: TestCommandInteractionDto) {
    return `Argument was ${dto.arg}`
  }
}

What I was wondering was if something like that existed:

class TestCommandInteractionDto {
  @Param({ description: 'Some argument', required: true, autocomplete: true })
  arg: string
}

@Command({
  name: 'test',
  description: 'Do things',
})
export class TestCommand {
  @Autocompletion()
  async onAutocompletion(interaction: AutocompleteInteraction) { // argument type imported from discord.js
    // Return a list of strings for autocompletion
  }

  @Handler()
  async onCommand(interaction: CommandInteraction, @IA(SlashCommandPipe) dto: TestCommandInteractionDto) {
    return `Argument was ${dto.arg}`
  }
}

This way, managing autocompletion would be much easier than manually handling it using an event handler, manually checking which command is being autocompleted, and return the list accordingly.