[F] Facebook SSO redirects to exit page

middleware.ts

@@ -1,15 +1,42 @@
-import createMiddleware from "next-intl/middleware";
+import { NextResponse } from "next/server";
+import type { NextRequest } from "next/server";
+import createIntlMiddleware from "next-intl/middleware";
 import { fallbackLng, languages } from "./lib/i18n/settings";
 
-export default createMiddleware({
-  // A list of all locales that are supported
-  locales: languages,
+// This function can be marked `async` if using `await` inside
+export function middleware(request: NextRequest) {
+  const {
+    nextUrl: { search, pathname },
+  } = request;
 
-  // If this locale is matched, pathnames work without a prefix (e.g. `/about`)
-  defaultLocale: fallbackLng,
-});
+  if (pathname === "/sso-redirect") {
+    const urlSearchParams = new URLSearchParams(search);
+    const params = Object.fromEntries(urlSearchParams.entries());
+    const { state: redirectPath, facebook, code } = params;
+    if (redirectPath && facebook && code) {
+      const redirectUrl = request.nextUrl.clone();
+      redirectUrl.pathname = redirectPath;
+
+      return NextResponse.redirect(redirectUrl);
+    }
+  } else {
+    const handleI18nRouting = createIntlMiddleware({
+      // A list of all locales that are supported
+      locales: languages,
+
+      // If this locale is matched, pathnames work without a prefix (e.g. `/about`)
+      defaultLocale: fallbackLng,
+    });
+    const response = handleI18nRouting(request);
+
+    return response;
+  }
+}
 
 export const config = {
   // do not localize next.js paths
-  matcher: ["/((?!api|_next/static|_next/image|assets|favicon.ico|sw.js).*)"],
+  matcher: [
+    "/sso-redirect/",
+    "/((?!api|_next/static|_next/image|assets|favicon.ico|sw.js).*)",
+  ],
 };