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Handle disabled signups in login UI #153

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Merged
arjunkomath merged 2 commits into from
Jul 29, 2026
Merged

Handle disabled signups in login UI #153

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e12d61f
Handle disabled signups in login UI
arjunkomath Jul 29, 2026
365ecae
Merge pull request #152 from techulus/disable-signup-ui
arjunkomath Jul 29, 2026
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12 changes: 7 additions & 5 deletions apps/web/pages/api/auth/callback.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -7,9 +7,11 @@ const callback: NextApiHandler = async (req, res) => {
const redirectedFrom = req.query.redirectedFrom;

if (typeof code !== "string") {
return res.redirect(
`/login?error=${encodeURIComponent("Missing or invalid code")}`
);
const error =
typeof req.query.error_description === "string"
? req.query.error_description
: "Missing or invalid code";
return res.redirect(`/login?error=${encodeURIComponent(error)}`);
}

const supabase = createServerClientForAPI({ req, res });
Expand All @@ -25,13 +27,13 @@ const callback: NextApiHandler = async (req, res) => {
if (!data.session) {
console.error("Auth callback: No session created");
return res.redirect(
`/login?error=${encodeURIComponent("No session created")}`
`/login?error=${encodeURIComponent("No session created")}`,
);
}
} catch (err) {
console.error("Auth callback exception:", err);
return res.redirect(
`/login?error=${encodeURIComponent("Authentication failed")}`
`/login?error=${encodeURIComponent("Authentication failed")}`,
);
}

Expand Down
23 changes: 19 additions & 4 deletions apps/web/pages/login.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -20,7 +20,7 @@ import { useUserData } from "../utils/useUser";

export default function Login() {
const router = useRouter();
const { redirectedFrom } = router.query;
const { error, redirectedFrom } = router.query;

const { supabase } = useUserData();
const prefersColorScheme = usePrefersColorScheme();
Expand All @@ -47,7 +47,7 @@ export default function Login() {
const msg = error.message.toLowerCase();
if (msg.includes("signups not allowed") || msg.includes("not found")) {
notifyError(
"No account found for this email. Sign up with Google or GitHub."
"No account found for this email. New registrations are closed.",
);
} else {
notifyError(error.message);
Expand Down Expand Up @@ -108,9 +108,13 @@ export default function Login() {
</Link>

<h2 className="mt-6 text-center text-3xl font-extrabold text-gray-900 dark:text-gray-100">
Get Started
Sign in
</h2>

<p className="mt-2 text-center text-sm text-gray-600 dark:text-gray-400">
Sign-ins are limited to existing accounts.
</p>

<p className="mt-6 text-center text-sm font-medium text-gray-600 dark:text-gray-400">
By using changes.page you agree to our{" "}
<Link href={"/terms"} className="underline">
Expand All @@ -124,6 +128,14 @@ export default function Login() {
</p>
</div>

{typeof error === "string" && (
<p className="rounded-md border border-red-300 bg-red-50 px-3 py-2 text-sm text-red-700 dark:border-red-800 dark:bg-red-950 dark:text-red-300">
{error.toLowerCase().includes("signup")
? "New registrations are closed. Existing users can still sign in."
: error}
</p>
)}

<Auth
supabaseClient={supabase}
appearance={{
Expand Down Expand Up @@ -158,7 +170,10 @@ export default function Login() {
/>

<div className="relative my-4">
<div className="absolute inset-0 flex items-center" aria-hidden="true">
<div
className="absolute inset-0 flex items-center"
aria-hidden="true"
>
<div className="w-full border-t border-gray-300 dark:border-gray-700" />
</div>
<div className="relative flex justify-center text-sm">
Expand Down