import { redirect } from "@sveltejs/kit";
import { generateCodeVerifier, generateState } from "arctic";
import { discord } from "$lib/auth/discord";
import type { RequestHandler } from "./$types";
import type { CookieData } from "$lib/auth";

export const GET: RequestHandler = async ({ cookies, url }) => {
	const cookie: CookieData = {
		state: generateState(),
		codeVerifier: generateCodeVerifier(),
		next: url.searchParams.get("next") ?? "/",
	};

	const scopes = ["identify"];
	const authUrl = discord.createAuthorizationURL(cookie.state, cookie.codeVerifier, scopes);

	cookies.set("discord_oauth_state", JSON.stringify(cookie), {
		path: "/",
		httpOnly: true,
		maxAge: 60 * 10,
		sameSite: "lax",
	});

	redirect(302, authUrl);
};