billing: Return login URL for AJAX request session timeout for servers.

corporate/lib/decorator.py

@@ -2,9 +2,8 @@ from functools import wraps
 from typing import Callable, Optional
 from urllib.parse import urlencode, urljoin
 
-import orjson
 from django.conf import settings
-from django.http import HttpRequest, HttpResponse, HttpResponseRedirect
+from django.http import HttpRequest, HttpResponse, HttpResponseRedirect, JsonResponse
 from django.shortcuts import render
 from django.urls import reverse
 from typing_extensions import Concatenate, ParamSpec
@@ -23,6 +22,16 @@ from zilencer.models import RemoteRealm
 ParamT = ParamSpec("ParamT")
 
 
+def session_expired_ajax_response(login_url: str) -> JsonResponse:  # nocoverage
+    return JsonResponse(
+        {
+            "error_message": "Remote billing authentication expired",
+            "login_url": login_url,
+        },
+        status=401,
+    )
+
+
 def is_self_hosting_management_subdomain(request: HttpRequest) -> bool:
     subdomain = get_subdomain(request)
     return subdomain == settings.SELF_HOSTING_MANAGEMENT_SUBDOMAIN
@@ -107,15 +116,7 @@ def authenticated_remote_realm_management_endpoint(
 
             # Return error for AJAX requests with url.
             if request.headers.get("x-requested-with") == "XMLHttpRequest":  # nocoverage
-                return HttpResponse(
-                    orjson.dumps(
-                        {
-                            "error_message": "Remote billing authentication expired",
-                            "login_url": url,
-                        }
-                    ),
-                    status=401,
-                )
+                return session_expired_ajax_response(url)
 
             return HttpResponseRedirect(url)
 
@@ -187,6 +188,10 @@ def authenticated_remote_server_management_endpoint(
                 query = urlencode({"next_page": page_type})
                 url = append_url_query_string(url, query)
 
+            # Return error for AJAX requests with url.
+            if request.headers.get("x-requested-with") == "XMLHttpRequest":  # nocoverage
+                return session_expired_ajax_response(url)
+
             return HttpResponseRedirect(url)
 
         assert remote_billing_user is not None