import { BG, type BgConfig } from "bgutils-js";
import { JSDOM } from "jsdom";

export async function generateWebPoToken(visitorData: string) {
	const requestKey = "O43z0dpjhgX20SCx4KAo";

	if (!visitorData) throw new Error("Could not get visitor data");

	const dom = new JSDOM();

	Object.assign(globalThis, {
		window: dom.window,
		document: dom.window.document,
	});

	const bgConfig: BgConfig = {
		fetch: fetch as any,
		globalObj: globalThis,
		identifier: visitorData,
		requestKey,
	};

	const bgChallenge = await BG.Challenge.create(bgConfig);

	if (!bgChallenge) throw new Error("Could not get challenge");

	const interpreterJavascript = bgChallenge.interpreterJavascript.privateDoNotAccessOrElseSafeScriptWrappedValue;

	if (interpreterJavascript) {
		new Function(interpreterJavascript)();
	} else throw new Error("Could not load VM");

	const poTokenResult = await BG.PoToken.generate({
		program: bgChallenge.program,
		globalName: bgChallenge.globalName,
		bgConfig,
	});

	const placeholderPoToken = BG.PoToken.generateColdStartToken(visitorData);

	return {
		visitorData,
		placeholderPoToken,
		poToken: poTokenResult.poToken,
	};
}