discordeno/plugins/helpers/src/channels.ts

import { Bot, Channel, CreateGuildChannel, separateOverwrites } from "../deps.ts";

/** Create a copy of a channel */
export async function cloneChannel(
  bot: Bot,
  channel: Channel,
  reason?: string,
) {
  if (!channel.guildId) {
    throw new Error(`Cannot clone a channel outside a guild`);
  }

  const createChannelOptions: CreateGuildChannel = {
    type: channel.type,
    bitrate: channel.bitrate,
    userLimit: channel.userLimit,
    rateLimitPerUser: channel.rateLimitPerUser,
    position: channel.position,
    parentId: channel.parentId,
    nsfw: channel.nsfw,
    name: channel.name!,
    topic: channel.topic || undefined,
    permissionOverwrites: channel.permissionOverwrites.map((overwrite) => {
      const [type, id, allow, deny] = separateOverwrites(overwrite);

      return {
        id,
        type,
        allow: bot.utils.calculatePermissions(BigInt(allow)),
        deny: bot.utils.calculatePermissions(BigInt(deny)),
      };
    }),
  };

  //Create the channel (also handles permissions)
  return await bot.helpers.createChannel(
    channel.guildId!,
    createChannelOptions,
    reason,
  );
}