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import { useState } from "react";
import { Link, useLoaderData, useNavigate } from "react-router";
import { startAuthentication, startRegistration } from "@simplewebauthn/browser";
import type { Route } from "./+types/login";
import { ensureSetupToken, isLoggedIn } from "~/lib/auth.server";
export async function loader({ request }: Route.LoaderArgs) {
ensureSetupToken();
const url = new URL(request.url);
const next = url.searchParams.get("next");
return {
loggedIn: isLoggedIn(request),
token: url.searchParams.get("token"),
// Only allow same-site relative redirects
next: next && /^\/(?![/\\])/.test(next) ? next : "/favorites",
};
}
async function postJson(path: string, body: unknown) {
const res = await fetch(path, {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify(body),
});
const data = await res.json();
if (!res.ok || data.ok === false) throw new Error(data.error ?? `HTTP ${res.status}`);
return data;
}
export default function Login() {
const { loggedIn, token, next } = useLoaderData<typeof loader>();
const navigate = useNavigate();
const [busy, setBusy] = useState(false);
const [error, setError] = useState<string | null>(null);
const [label, setLabel] = useState("");
const canRegister = loggedIn || !!token;
async function run(fn: () => Promise<void>) {
setBusy(true);
setError(null);
try {
await fn();
navigate(next);
} catch (e) {
const err = e as Error;
setError(err.name === "NotAllowedError" ? "キャンセルされました" : err.message);
} finally {
setBusy(false);
}
}
const login = () =>
run(async () => {
const optionsJSON = await postJson("/api/auth/login-options", {});
const response = await startAuthentication({ optionsJSON });
await postJson("/api/auth/login-verify", { response });
});
const register = () =>
run(async () => {
const optionsJSON = await postJson("/api/auth/register-options", { token });
const response = await startRegistration({ optionsJSON });
await postJson("/api/auth/register-verify", { token, response, label: label || null });
});
return (
<div className="min-h-screen bg-gray-950 text-gray-100 flex items-center justify-center px-4">
<div className="w-full max-w-sm rounded-xl border border-gray-800 bg-gray-900 p-6 flex flex-col gap-5">
<Link to="/events" className="text-lg font-bold tracking-tight text-white">
🎸 ライブに行くしかない
</Link>
{!loggedIn && (
<button
onClick={login}
disabled={busy}
className="rounded-md bg-indigo-600 px-4 py-2.5 text-sm font-medium hover:bg-indigo-500 disabled:opacity-50 transition-colors"
>
🔑 パスキーでログイン
</button>
)}
{loggedIn && !token && (
<p className="text-sm text-gray-300">
ログイン済みです。{" "}
<Link to="/favorites" className="text-indigo-400 hover:text-indigo-300 underline">
お気に入りへ
</Link>
</p>
)}
{canRegister && (
<div className="flex flex-col gap-2 border-t border-gray-800 pt-5">
<p className="text-xs text-gray-400">
{loggedIn ? "このデバイスのパスキーを追加登録" : "パスキーを新規登録"}
</p>
<input
value={label}
onChange={(e) => setLabel(e.target.value)}
placeholder="デバイス名（例: iPhone）"
className="rounded-md bg-gray-800 border border-gray-700 px-3 py-1.5 text-sm focus:outline-none focus:ring-1 focus:ring-indigo-500"
/>
<button
onClick={register}
disabled={busy}
className="rounded-md bg-gray-700 px-4 py-2 text-sm font-medium hover:bg-gray-600 disabled:opacity-50 transition-colors"
>
パスキーを登録
</button>
</div>
)}
{error && <p className="text-sm text-red-400">{error}</p>}
</div>
</div>
);
}
|
