wynn/ts/src/activities/discord.ts

import { Bot } from "#/bot";
import {c} from "#/di"
import { InteractionResponseTypes, InteractionCallbackOptions, InteractionCallbackData, InteractionTypes, MessageFlags } from "discordeno";


export interface InteractionRef {
  id: string
  token: string
  type: InteractionTypes
  acknowledged?: boolean
}

// from https://github.com/discordeno/discordeno/blob/21.0.0/packages/bot/src/transformers/interaction.ts#L33
export const reply_to_interaction = async (props: {
  ref: InteractionRef
  response: InteractionCallbackData | string
  options?: InteractionCallbackOptions & {isPrivate?: boolean}
}) => {
  const bot = await c.getAsync(Bot);

  const {
    ref,
    response,
    options,
  } = props;
  let data: InteractionCallbackData
  let type: InteractionResponseTypes = InteractionResponseTypes.ChannelMessageWithSource

  if (typeof response ===  'string') {
    data = {content: response}
  } else {
    data = response
    if(data.title) {
      type = InteractionResponseTypes.Modal
    }
  }
  if(ref.type === InteractionTypes.ApplicationCommandAutocomplete) {
    type = InteractionResponseTypes.ApplicationCommandAutocompleteResult
  }
  if (type === InteractionResponseTypes.ChannelMessageWithSource && options?.isPrivate) {
    data.flags = MessageFlags.Ephemeral
  }
  if(ref.acknowledged) {
    return await bot.helpers.sendFollowupMessage(ref.token,data)
  }

  if(ref.type === InteractionTypes.ModalSubmit && type === InteractionResponseTypes.Modal) {
    throw new Error('Cannot send a modal response to a modal')
  }

  return await bot.helpers.sendInteractionResponse(ref.id, ref.token,
    { type, data }, { withResponse: options?.withResponse })
}