import { sha256 } from '@oslojs/crypto/sha2';
import { encodeBase64url, encodeHexLowerCase } from '@oslojs/encoding';

const DAY_IN_MS = 1000 * 60 * 60 * 24;

export const sessionCookieName = 'auth-session';

export function generateSessionToken() {
	const bytes = crypto.getRandomValues(new Uint8Array(18));
	const token = encodeBase64url(bytes);
	return token;
}

/**
 * @param {import("@sveltejs/kit").RequestEvent} event
 * @param {string} token
 * @param {Date} expiresAt
 */
export function setSessionTokenCookie(event, token, expiresAt) {
	event.cookies.set(sessionCookieName, token, {
		expires: expiresAt,
		path: '/'
	});
}

/** @param {import("@sveltejs/kit").RequestEvent} event */
export function deleteSessionTokenCookie(event) {
	event.cookies.delete(sessionCookieName, {
		path: '/'
	});
}