rudeshark.net/packages/client/src/scripts/lookup-user.ts

import * as Acct from "calckey-js/built/acct";
import { i18n } from "@/i18n";
import * as os from "@/os";

export async function lookupUser() {
	const { canceled, result } = await os.inputText({
		title: i18n.ts.usernameOrUserId,
	});
	if (canceled) return;

	const show = (user) => {
		os.pageWindow(`/user-info/${user.id}`);
	};

	const usernamePromise = os.api("users/show", Acct.parse(result));
	const idPromise = os.api("users/show", { userId: result });
	let _notFound = false;
	const notFound = () => {
		if (_notFound) {
			os.alert({
				type: "error",
				text: i18n.ts.noSuchUser,
			});
		} else {
			_notFound = true;
		}
	};
	usernamePromise.then(show).catch((err) => {
		if (err.code === "NO_SUCH_USER") {
			notFound();
		}
	});
	idPromise.then(show).catch((err) => {
		notFound();
	});
}