import { debounce } from "../../utils"; import { PronounCode, PronounsResponse } from "./types"; // A map of cached pronouns so the same request isn't sent twice const cache: Record = {}; // A map of ids and callbacks that should be triggered on fetch const requestQueue: Record void)[]> = {}; // Executes all queued requests and calls their callbacks const bulkFetch = debounce(async () => { const ids = Object.keys(requestQueue); const pronouns = await bulkFetchPronouns(ids); for (const id of ids) { // Call all callbacks for the id requestQueue[id].forEach(c => c(pronouns[id])); delete requestQueue[id]; } }); // Fetches the pronouns for one id, returning a promise that resolves if it was cached, or once the request is completed export function fetchPronouns(id: string): Promise { return new Promise(res => { // If cached, return the cached pronouns if (id in cache) res(cache[id]); // If there is already a request added, then just add this callback to it else if (id in requestQueue) requestQueue[id].push(res); // If not already added, then add it and call the debounced function to make sure the request gets executed else { requestQueue[id] = [res]; bulkFetch(); } }); } async function bulkFetchPronouns(ids: string[]): Promise { const params = new URLSearchParams(); params.append("platform", "discord"); params.append("ids", ids.join(",")); try { const req = await fetch("https://pronoundb.org/api/v1/lookup-bulk?" + params, { method: "GET", headers: { "Accept": "application/json" } }); return await req.json() .then((res: PronounsResponse) => { Object.assign(cache, res); return res; }); } catch (e) { // If the request errors, treat it as if no pronouns were found for all ids, and log it console.error("PronounDB fetching failed: ", e); const dummyPronouns = Object.fromEntries(ids.map(id => [id, "unspecified"] as const)); Object.assign(cache, dummyPronouns); return dummyPronouns; } }