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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<string, PronounCode> = {};
// A map of ids and callbacks that should be triggered on fetch
const requestQueue: Record<string, ((pronouns: PronounCode) => 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<PronounCode> {
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<PronounsResponse> {
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.toString(), {
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;
}
}
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