discordeno/plugins/helpers/src/fetchAndRetrieveMembers.ts

import { BotWithCache } from "../../cache/src/addCacheCollections.ts";
import { BigString } from "../deps.ts";

/** Fetch members for an entire guild then return the entire guilds cached members. */
export async function fetchAndRetrieveMembers(bot: BotWithCache, guildId: BigString) {
  if (!bot.enabledPlugins?.has("CACHE")) {
    throw new Error("The fetchAndRetrieveMembers function requires the CACHE plugin first.");
  }

  const guild = bot.guilds.get(bot.transformers.snowflake(guildId));
  if (!guild) {
    throw new Error("The guild was not found in cache. Unable to fetch members for uncached guild.");
  }

  await bot.helpers.fetchMembers(guildId, { limit: 0 });
  return bot.members.filter((member) => member.guildId === guildId);
}