fix signup button showing when it shouldnt

frontend/src/components/Navbar.tsx

@@ -10,12 +10,19 @@ import classNames from "classnames"
 import { Link, NavLink } from "react-router-dom"
 
 import { useIsAuthenticated, useUser } from "../hooks/useAuth"
+import { useServerConfig } from "../hooks/useServerConfig"
 
 import NavButton from "./NavButton"
 
 export default function Navbar() {
   const isAuthenticated = useIsAuthenticated()
   const user = useUser()
+  const { disableRegistration, disableCredentialLogin } = useServerConfig()
+
+  const showRegisterButton = useMemo(
+    () => !disableRegistration && !disableCredentialLogin,
+    [disableRegistration, disableCredentialLogin]
+  )
 
   const navigation = useMemo(() => {
     const authed = [
@@ -24,8 +31,10 @@ export default function Navbar() {
       { name: "Sessions", href: "ses" },
     ]
     const unauthed = [{ name: "Register", href: "sgn" }]
-    return isAuthenticated ? authed : unauthed
-  }, [isAuthenticated])
+    if (isAuthenticated) return authed
+    if (showRegisterButton) return unauthed
+    return []
+  }, [isAuthenticated, showRegisterButton])
 
   return (
     <Disclosure as="nav">

frontend/src/components/UserForm.tsx

@@ -104,7 +104,17 @@ const UserForm: FunctionComponent<{
 }> = ({ action }) => {
   const [params] = useSearchParams()
   const from = params.get("from") || "/"
-  const serverConfig = useServerConfig()
+  const {
+    disableRegistration,
+    disableCredentialLogin,
+    oidcIssuerUrl,
+    oidcIssuerName,
+  } = useServerConfig()
+
+  const showRegisterButton = useMemo(
+    () => !disableRegistration && !disableCredentialLogin,
+    [disableRegistration, disableCredentialLogin]
+  )
 
   const opts = actionOptions[action]
 
@@ -118,6 +128,11 @@ const UserForm: FunctionComponent<{
   // to the page they were on before they logged in.
   const altLink = from ? `${opts.altLink}?from=${from}` : opts.altLink
 
+  // Redirect user from signup if `showRegisterButton` is false
+  if (!showRegisterButton && action === "register") {
+    window.location.href = altLink
+  }
+
   const [password, setPassword] = useState("")
   const onPasswordChange: ChangeEventHandler<HTMLInputElement> = (event) => {
     const password = event.target.value
@@ -133,7 +148,7 @@ const UserForm: FunctionComponent<{
   return (
     <div className="flex flex-col mx-auto rounded-lg shadow-md p-8 max-w-md gap-y-6">
       <span className="text-3xl font-bold text-center mb-4">{opts.title}</span>
-      {serverConfig.disableCredentialLogin ? null : (
+      {disableCredentialLogin ? null : (
         <Form method="post" replace className="flex flex-col gap-y-2">
           {actionData && actionData.error ? (
             <p className="text-red-500 text-center font-medium">
@@ -206,14 +221,14 @@ const UserForm: FunctionComponent<{
           </Button>
         </Form>
       )}
-      {!!serverConfig?.oidcIssuerUrl.length && (
+      {!!oidcIssuerUrl.length && (
         <a href={`${import.meta.env.VITE_OIDC_URL}/redirect`}>
           <Button color="green" className="px-8 py-3 max-w-fit mx-auto">
-            {`${opts.buttonText} with ${serverConfig.oidcIssuerName}`}
+            {`${opts.buttonText} with ${oidcIssuerName}`}
           </Button>
         </a>
       )}
-      {serverConfig.disableRegistration && action === "login" ? null : (
+      {!showRegisterButton && action === "login" ? null : (
         <span className="text-slate-500 font-light text-center text-sm">
           {opts.altLabel + " "}
           <Link