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/*
This file is part of GNU Taler
(C) 2022-2024 Taler Systems S.A.
GNU Taler is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
import {
Loading,
urlPattern,
useCurrentLocation,
useNavigationContext,
} from "@gnu-taler/web-util/browser";
import { Fragment, VNode, h } from "preact";
import { AccessToken, assertUnreachable } from "@gnu-taler/taler-util";
import { useEffect, useErrorBoundary } from "preact/hooks";
import { CallengeCompleted } from "./pages/CallengeCompleted.js";
import { Frame } from "./pages/Frame.js";
import { Start } from "./pages/Start.js";
import { useSessionState } from "./hooks/session.js";
export function Routing(): VNode {
// check session and defined if this is
// public routing or private
return (
<Frame>
<PublicRounting />
</Frame>
);
}
const publicPages = {
completed: urlPattern(/\/completed/, () => `#/completed`),
start: urlPattern(/\/start/, () => `#/start`),
};
function safeGetParam(
ps: Record<string, string[]>,
n: string,
): string | undefined {
if (!ps[n] || ps[n].length == 0) return undefined;
return ps[n][0];
}
export function safeToURL(s: string | undefined): URL | undefined {
if (s === undefined) return undefined;
try {
return new URL(s);
} catch (e) {
return undefined;
}
}
const ACCESS_TOKEN_REGEX = new RegExp("[A-Z0-9]{52}")
/**
* by how the exchange serves the SPA
* /kyc-spa/KXAFXEWM7E3EJSYD9GJ30FYK1C17AKZWV119ZJA3XGPBBMZFJ2C0#/start
*
* by how dev.mjs serves the SPA
* /app/?token=KXAFXEWM7E3EJSYD9GJ30FYK1C17AKZWV119ZJA3XGPBBMZFJ2C0#/start
* @returns
*/
function getAccessTokenFromURL(): AccessToken | undefined {
if (typeof window === "undefined") return undefined;
const paths = window.location.pathname.split("/");
if (paths.length < 3) return undefined;
const path = paths[2]
if (path && ACCESS_TOKEN_REGEX.test(path)) {
return path as AccessToken;
}
const param = new URLSearchParams(window.location.search).get("token")
if (param && ACCESS_TOKEN_REGEX.test(param)) {
return param as AccessToken;
}
return undefined;
}
function PublicRounting(): VNode {
const location = useCurrentLocation(publicPages);
const { state, start } = useSessionState();
const { navigateTo } = useNavigationContext();
useErrorBoundary((e) => {
console.log("error", e);
});
const sessionToken = state?.accessToken
const urlToken = getAccessTokenFromURL();
useEffect(() => {
if (!urlToken) {
//special case, loading without URL the it should use the session
return;
}
// loading a new session
if (urlToken !== sessionToken) {
start(urlToken)
}
},[sessionToken, urlToken])
if (!sessionToken) {
return <div>No access token</div>;
}
switch (location.name) {
case undefined: {
navigateTo(publicPages.start.url({}));
return <Loading />;
}
case "start": {
return (
<Start
token={sessionToken}
onLoggedOut={() => {
navigateTo(publicPages.completed.url({}));
}}
/>
);
}
case "completed": {
return <CallengeCompleted />;
}
default:
assertUnreachable(location);
}
}
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