Add dedicated local admin domain routing

middleware.ts

@@ -4,8 +4,12 @@ import type { NextRequest } from "next/server";
 
 import { routing } from "./i18n/routing";
 import {
+  fromDevelopmentAdminPath,
+  getAdminBaseUrl,
   getRequestHostname,
+  isDevelopmentAdminPath,
   isAdminHost,
+  hasDedicatedAdminHost,
   isInternalAdminPath,
   isLegacyAdminPath,
   toInternalAdminPath,
@@ -53,15 +57,35 @@ function isAdminBasicAuthValid(request: NextRequest): boolean {
 
 export default async function middleware(request: NextRequest) {
   const { pathname } = request.nextUrl;
+  const isDevelopmentAdminRequest =
+    process.env.NODE_ENV !== "production" && isDevelopmentAdminPath(pathname);
   const hostname = getRequestHostname(
-    request.headers.get("x-forwarded-host") ?? request.headers.get("host") ?? request.nextUrl.hostname,
+    request.headers.get("host") ?? request.headers.get("x-forwarded-host") ?? request.nextUrl.hostname,
   );
-  const isAdminRequest = isAdminHost(hostname);
+  const isAdminRequest = isDevelopmentAdminRequest || isAdminHost(hostname);
+  const hasDedicatedAdminHostname = hasDedicatedAdminHost();
   const adminRobotsHeaders = {
     "X-Robots-Tag": "noindex, nofollow, noarchive, nosnippet, noimageindex",
   };
 
-  if (isInternalAdminPath(pathname) || isLegacyAdminPath(pathname)) {
+  if (
+    isDevelopmentAdminRequest &&
+    hasDedicatedAdminHostname &&
+    !isAdminHost(hostname)
+  ) {
+    const redirectUrl = new URL(getAdminBaseUrl());
+    redirectUrl.pathname = fromDevelopmentAdminPath(pathname);
+    redirectUrl.search = request.nextUrl.search;
+    return NextResponse.redirect(redirectUrl, 308);
+  }
+
+  if (isLegacyAdminPath(pathname) && process.env.NODE_ENV === "production") {
+    return new NextResponse("Not Found", {
+      status: 404,
+    });
+  }
+
+  if (isInternalAdminPath(pathname) && process.env.NODE_ENV === "production" && !isAdminRequest) {
     return new NextResponse("Not Found", {
       status: 404,
     });
@@ -79,8 +103,9 @@ export default async function middleware(request: NextRequest) {
     }
 
     const rewriteUrl = request.nextUrl.clone();
-    rewriteUrl.pathname = toInternalAdminPath(pathname);
-
+    rewriteUrl.pathname = toInternalAdminPath(
+      isDevelopmentAdminRequest ? fromDevelopmentAdminPath(pathname) : pathname,
+    );
     const response = NextResponse.rewrite(rewriteUrl);
     response.headers.set("X-Robots-Tag", adminRobotsHeaders["X-Robots-Tag"]);
     return response;